{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 47,
   "id": "dcea883b",
   "metadata": {},
   "outputs": [],
   "source": [
    "from serpapi import GoogleSearch\n",
    "import os\n",
    "from firecrawl import FirecrawlApp"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 49,
   "id": "0e995c1e",
   "metadata": {},
   "outputs": [],
   "source": [
    "app = FirecrawlApp(api_key=os.getenv(\"FIRECRAWL_API_KEY\"))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "d72321e5",
   "metadata": {},
   "outputs": [],
   "source": [
    "q = input(\"Enter the query: \")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "545e7b35",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Parameter defines unique ID for an article to trigger Cited By searches. Usage of cites will bring up a list of citing documents in Google Scholar. Example value: cites=1275980731835430123. Usage of cites and q parameters triggers search within citing articles.'"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "\n",
    "'''Parameter defines unique ID for an article to trigger Cited By searches. Usage of cites will bring up a list of citing documents in Google Scholar. Example value: cites=1275980731835430123. Usage of cites and q parameters triggers search within citing articles.'''\n",
    "# cites = input(\"Enter the cites: \")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "a2a1bec0",
   "metadata": {},
   "outputs": [],
   "source": [
    "'''\n",
    "Parameter defines the language to use for the Google Scholar search. It's a two-letter language code. (e.g., en for English, es for Spanish, or fr for French). Head to the Google languages page for a full list of supported Google languages.\n",
    "'''\n",
    "lang = input(\"Enter the language: \")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "cfa9af91",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'\\nParameter defines the year from which you want the results to be included. (e.g. if you set as_ylo parameter to the year 2018, the results before that year will be omitted.). This parameter can be combined with the as_yhi parameter.\\n'"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines the year from which you want the results to be included. (e.g. if you set as_ylo parameter to the year 2018, the results before that year will be omitted.). This parameter can be combined with the as_yhi parameter.\n",
    "'''\n",
    "# as_ylo = int(input(\"Enter the Start year of publication: \"))\n",
    "\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "a642e027",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'\\nParameter defines the year until which you want the results to be included. (e.g. if you set as_yhi parameter to the year 2018, the results after that year will be omitted.). This parameter can be combined with the as_ylo parameter.\\n'"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines the year until which you want the results to be included. (e.g. if you set as_yhi parameter to the year 2018, the results after that year will be omitted.). This parameter can be combined with the as_ylo parameter.\n",
    "'''\n",
    "# as_yhi = int(input(\"Enter the End year of publication: \"))\n",
    "\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "20a39942",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'\\nParameter defines articles added in the last year, sorted by date. It can be set to 1 to include only abstracts, or 2 to include everything. The default value is 0 which means that the articles are sorted by relevance.\\n'"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines articles added in the last year, sorted by date. It can be set to 1 to include only abstracts, or 2 to include everything. The default value is 0 which means that the articles are sorted by relevance.\n",
    "'''\n",
    "\n",
    "# scisbd = input(\"Sort by Date (1.Abstracts , 2.Everything): \")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "f7124f47",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'\\nParameter defines unique ID for an article to trigger All Versions searches. Example value: cluster=1275980731835430123. Usage of cluster together with q and cites parameters is prohibited. Use cluster parameter only.\\n'"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines unique ID for an article to trigger All Versions searches. Example value: cluster=1275980731835430123. Usage of cluster together with q and cites parameters is prohibited. Use cluster parameter only.\n",
    "'''\n",
    "\n",
    "# cluster = int(input(\"Versions of: \"))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "id": "26ab649c",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'\\nParameter defines one or multiple languages to limit the search to. It uses lang_{two-letter language code} to specify languages and | as a delimiter. (e.g., lang_fr|lang_de will only search French and German pages). Head to the Google lr languages for a full list of supported languages.\\n'"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines one or multiple languages to limit the search to. It uses lang_{two-letter language code} to specify languages and | as a delimiter. (e.g., lang_fr|lang_de will only search French and German pages). Head to the Google lr languages for a full list of supported languages.\n",
    "'''\n",
    "\n",
    "# lr = input(\"Enter the multiple languages: \")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "9a9112f0",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "\"\\nParameter defines the result offset. It skips the given number of results. It's used for pagination. (e.g., 0 (default) is the first page of results, 10 is the 2nd page of results, 20 is the 3rd page of results, etc.).\\n\""
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines the result offset. It skips the given number of results. It's used for pagination. (e.g., 0 (default) is the first page of results, 10 is the 2nd page of results, 20 is the 3rd page of results, etc.).\n",
    "'''\n",
    "\n",
    "# start = int(input(\"Enter the result offset: \"))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "0584004d",
   "metadata": {},
   "outputs": [
    {
     "ename": "ValueError",
     "evalue": "invalid literal for int() with base 10: ''",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mValueError\u001b[0m                                Traceback (most recent call last)",
      "Cell \u001b[1;32mIn[13], line 5\u001b[0m\n\u001b[0;32m      1\u001b[0m \u001b[38;5;124;03m'''\u001b[39;00m\n\u001b[0;32m      2\u001b[0m \u001b[38;5;124;03mParameter defines the maximum number of results to return, ranging from 1 to 20, with a default of 10.\u001b[39;00m\n\u001b[0;32m      3\u001b[0m \u001b[38;5;124;03m'''\u001b[39;00m\n\u001b[1;32m----> 5\u001b[0m num \u001b[38;5;241m=\u001b[39m \u001b[38;5;28;43mint\u001b[39;49m\u001b[43m(\u001b[49m\u001b[38;5;28;43minput\u001b[39;49m\u001b[43m(\u001b[49m\u001b[38;5;124;43m\"\u001b[39;49m\u001b[38;5;124;43mEnter the number of results: \u001b[39;49m\u001b[38;5;124;43m\"\u001b[39;49m\u001b[43m)\u001b[49m\u001b[43m)\u001b[49m\n",
      "\u001b[1;31mValueError\u001b[0m: invalid literal for int() with base 10: ''"
     ]
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines the maximum number of results to return, ranging from 1 to 20, with a default of 10.\n",
    "'''\n",
    "\n",
    "num = int(input(\"Enter the number of results: \"))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "id": "3ea71777",
   "metadata": {},
   "outputs": [],
   "source": [
    "'''\n",
    "Parameter can be used either as a search type or a filter.\n",
    "\n",
    "As a Filter (only works when searching articles):\n",
    "0 - exclude patents (default).\n",
    "7 - include patents.\n",
    "\n",
    "As a Search Type:\n",
    "4 - Select case law (US courts only). This will select all the State and Federal courts.\n",
    "e.g. as_sdt=4 - Selects case law (all courts)\n",
    "\n",
    "To select specific courts, see the full list of supported Google Scholar courts.\n",
    "e.g. as_sdt=4,33,192 - 4 is the required value and should always be in the first position, 33 selects all New York courts and 192 selects Tax Court.\n",
    "Values have to be separated by comma (,)\n",
    "'''\n",
    "\n",
    "as_sdt = input(\"Search Type / Filter: \")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "49a1fa31",
   "metadata": {},
   "outputs": [],
   "source": [
    "'''\n",
    "Parameter defines the level of filtering for adult content. It can be set to active or off, by default Google will blur explicit content.\n",
    "'''\n",
    "\n",
    "safe = input(\"Adult Content Filtering (off , active) : \")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "95a262c1",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "\"\\nParameter defines if the filters for 'Similar Results' and 'Omitted Results' are on or off. It can be set to 1 (default) to enable these filters, or 0 to disable these filters.\\n\""
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines if the filters for 'Similar Results' and 'Omitted Results' are on or off. It can be set to 1 (default) to enable these filters, or 0 to disable these filters.\n",
    "'''\n",
    "# filter_ = input(\"Enter the filter: \")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "b368d923",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'\\nParameter defines whether you would like to include citations or not. It can be set to 1 to exclude these results, or 0 (default) to include them.\\n'"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines whether you would like to include citations or not. It can be set to 1 to exclude these results, or 0 (default) to include them.\n",
    "'''\n",
    "\n",
    "# as_vis = input(\"Enter the as_vis: \")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "5efdb867",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'\\nParameter defines whether you would like to show only review articles or not (these articles consist of topic reviews, or discuss the works or authors you have searched for). It can be set to 1 to enable this filter, or 0 (default) to show all results.\\n'"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "'''\n",
    "Parameter defines whether you would like to show only review articles or not (these articles consist of topic reviews, or discuss the works or authors you have searched for). It can be set to 1 to enable this filter, or 0 (default) to show all results.\n",
    "'''\n",
    "\n",
    "# as_rr = input(\"Enter the as_rr: \")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "8bd8c15f",
   "metadata": {},
   "outputs": [],
   "source": [
    "params = {\n",
    "  \"api_key\": os.getenv(\"SERPAPI_API_KEY\"),\n",
    "  \"engine\": \"google_scholar\",\n",
    "  \"q\": q,\n",
    "  \"hl\": 'en',\n",
    "  # \"as_ylo\": as_ylo,\n",
    "  # \"as_yhi\": as_yhi,\n",
    "  # \"scisbd\": scisbd,\n",
    "  # \"cluster\": cluster,\n",
    "  # \"lr\": lr,\n",
    "  # \"start\": start,\n",
    "  # \"num\": int(num),\n",
    "  # \"as_sdt\": int(as_sdt),\n",
    "  # \"safe\": safe\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "id": "e8863e1a",
   "metadata": {},
   "outputs": [],
   "source": [
    "search = GoogleSearch(params)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "id": "1fa71601",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<serpapi.google_search.GoogleSearch at 0x1cc1dab4f10>"
      ]
     },
     "execution_count": 21,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "search"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "ded4553e",
   "metadata": {},
   "outputs": [],
   "source": [
    "results = search.get_dict()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "5688a4af",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'search_metadata': {'id': '6888f0a8aa0a88fab076608b',\n",
       "  'status': 'Success',\n",
       "  'json_endpoint': 'https://serpapi.com/searches/a607dc9d63db3f82/6888f0a8aa0a88fab076608b.json',\n",
       "  'created_at': '2025-07-29 16:02:48 UTC',\n",
       "  'processed_at': '2025-07-29 16:02:48 UTC',\n",
       "  'google_scholar_url': 'https://scholar.google.com/scholar?q=Nature&hl=en',\n",
       "  'raw_html_file': 'https://serpapi.com/searches/a607dc9d63db3f82/6888f0a8aa0a88fab076608b.html',\n",
       "  'total_time_taken': 2.03},\n",
       " 'search_parameters': {'engine': 'google_scholar', 'q': 'Nature', 'hl': 'en'},\n",
       " 'search_information': {'organic_results_state': 'Results for exact spelling',\n",
       "  'total_results': 6550000,\n",
       "  'time_taken_displayed': 0.05,\n",
       "  'query_displayed': 'Nature'},\n",
       " 'organic_results': [{'position': 1,\n",
       "   'title': 'Nature and health',\n",
       "   'result_id': 'YTe6tRNLUg0J',\n",
       "   'link': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443',\n",
       "   'snippet': '… of contact with nature. Reviewing that research here, we focus on nature as represented by … We discuss difficulties in defining “nature” and reasons for the current expansion of the …',\n",
       "   'publication_info': {'summary': 'T Hartig, R Mitchell, S De Vries… - Annual review of public …, 2014 - annualreviews.org',\n",
       "    'authors': [{'name': 'T Hartig',\n",
       "      'link': 'https://scholar.google.com/citations?user=tMREn-EAAAAJ&hl=en&oi=sra',\n",
       "      'serpapi_scholar_link': 'https://serpapi.com/search.json?author_id=tMREn-EAAAAJ&engine=google_scholar_author&hl=en',\n",
       "      'author_id': 'tMREn-EAAAAJ'},\n",
       "     {'name': 'R Mitchell',\n",
       "      'link': 'https://scholar.google.com/citations?user=pkkRIssAAAAJ&hl=en&oi=sra',\n",
       "      'serpapi_scholar_link': 'https://serpapi.com/search.json?author_id=pkkRIssAAAAJ&engine=google_scholar_author&hl=en',\n",
       "      'author_id': 'pkkRIssAAAAJ'},\n",
       "     {'name': 'S De Vries',\n",
       "      'link': 'https://scholar.google.com/citations?user=0m69ZsUAAAAJ&hl=en&oi=sra',\n",
       "      'serpapi_scholar_link': 'https://serpapi.com/search.json?author_id=0m69ZsUAAAAJ&engine=google_scholar_author&hl=en',\n",
       "      'author_id': '0m69ZsUAAAAJ'}]},\n",
       "   'resources': [{'title': 'annualreviews.org',\n",
       "     'file_format': 'PDF',\n",
       "     'link': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443?crawler=true&mimetype=application/pdf'}],\n",
       "   'inline_links': {'serpapi_cite_link': 'https://serpapi.com/search.json?engine=google_scholar_cite&hl=en&q=YTe6tRNLUg0J',\n",
       "    'cited_by': {'total': 4501,\n",
       "     'link': 'https://scholar.google.com/scholar?cites=959912218608678753&as_sdt=5,29&sciodt=0,29&hl=en',\n",
       "     'cites_id': '959912218608678753',\n",
       "     'serpapi_scholar_link': 'https://serpapi.com/search.json?as_sdt=5%2C29&cites=959912218608678753&engine=google_scholar&hl=en'},\n",
       "    'related_pages_link': 'https://scholar.google.com/scholar?q=related:YTe6tRNLUg0J:scholar.google.com/&scioq=Nature&hl=en&as_sdt=0,29',\n",
       "    'serpapi_related_pages_link': 'https://serpapi.com/search.json?as_sdt=0%2C29&engine=google_scholar&hl=en&q=related%3AYTe6tRNLUg0J%3Ascholar.google.com%2F',\n",
       "    'versions': {'total': 13,\n",
       "     'link': 'https://scholar.google.com/scholar?cluster=959912218608678753&hl=en&as_sdt=0,29',\n",
       "     'cluster_id': '959912218608678753',\n",
       "     'serpapi_scholar_link': 'https://serpapi.com/search.json?as_sdt=0%2C29&cluster=959912218608678753&engine=google_scholar&hl=en'}}},\n",
       "  {'position': 2,\n",
       "   'title': 'from Nature',\n",
       "   'result_id': 'jJQ0yy5Yd4AJ',\n",
       "   'link': 'https://www.degruyterbrill.com/document/doi/10.4159/harvard.9780674335486.c10/html',\n",
       "   'snippet': '\" Nature,\" the elder Oliver Wendell Holmes once wrote,\" is the Book of Revelation of our Saint Radulphus.\" This shrewd remark suggests much that readers need to know when first …',\n",
       "   'publication_info': {'summary': 'RW Emerson - Writing New England: An Anthology from the …, 2001 - degruyterbrill.com'},\n",
       "   'resources': [{'title': 'uclawsf.edu',\n",
       "     'file_format': 'PDF',\n",
       "     'link': 'https://repository.uclawsf.edu/cgi/viewcontent.cgi?article=1063&context=hastings_environmental_law_journal'}],\n",
       "   'inline_links': {'serpapi_cite_link': 'https://serpapi.com/search.json?engine=google_scholar_cite&hl=en&q=jJQ0yy5Yd4AJ',\n",
       "    'cited_by': {'total': 2085,\n",
       "     'link': 'https://scholar.google.com/scholar?cites=9256964517084304524&as_sdt=5,29&sciodt=0,29&hl=en',\n",
       "     'cites_id': '9256964517084304524',\n",
       "     'serpapi_scholar_link': 'https://serpapi.com/search.json?as_sdt=5%2C29&cites=9256964517084304524&engine=google_scholar&hl=en'},\n",
       "    'related_pages_link': 'https://scholar.google.com/scholar?q=related:jJQ0yy5Yd4AJ:scholar.google.com/&scioq=Nature&hl=en&as_sdt=0,29',\n",
       "    'serpapi_related_pages_link': 'https://serpapi.com/search.json?as_sdt=0%2C29&engine=google_scholar&hl=en&q=related%3AjJQ0yy5Yd4AJ%3Ascholar.google.com%2F',\n",
       "    'versions': {'total': 17,\n",
       "     'link': 'https://scholar.google.com/scholar?cluster=9256964517084304524&hl=en&as_sdt=0,29',\n",
       "     'cluster_id': '9256964517084304524',\n",
       "     'serpapi_scholar_link': 'https://serpapi.com/search.json?as_sdt=0%2C29&cluster=9256964517084304524&engine=google_scholar&hl=en'}}},\n",
       "  {'position': 3,\n",
       "   'title': 'Man and nature',\n",
       "   'result_id': 'x-R_1OIcG8UJ',\n",
       "   'type': 'Book',\n",
       "   'link': 'https://books.google.com/books?hl=en&lr=&id=1whJ8eXAq_gC&oi=fnd&pg=PR9&dq=Nature&ots=jR7dy94Nfq&sig=OydkQQmZSrFKTGAPmkwK7MTbPv4',\n",
       "   'snippet': 'InMan and Nature, first published in 1864, polymath scholar and diplomat George Perkins Marsh challenged the general belief that human impact on nature was generally benign or …',\n",
       "   'publication_info': {'summary': 'GP Marsh - 2003 - books.google.com'},\n",
       "   'inline_links': {'serpapi_cite_link': 'https://serpapi.com/search.json?engine=google_scholar_cite&hl=en&q=x-R_1OIcG8UJ',\n",
       "    'cited_by': {'total': 2682,\n",
       "     'link': 'https://scholar.google.com/scholar?cites=14202977610396329159&as_sdt=5,29&sciodt=0,29&hl=en',\n",
       "     'cites_id': '14202977610396329159',\n",
       "     'serpapi_scholar_link': 'https://serpapi.com/search.json?as_sdt=5%2C29&cites=14202977610396329159&engine=google_scholar&hl=en'},\n",
       "    'related_pages_link': 'https://scholar.google.com/scholar?q=related:x-R_1OIcG8UJ:scholar.google.com/&scioq=Nature&hl=en&as_sdt=0,29',\n",
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  {
   "cell_type": "code",
   "execution_count": 24,
   "id": "2ea74d02",
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   "outputs": [
    {
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       " 'processed_at': '2025-07-29 16:02:48 UTC',\n",
       " 'google_scholar_url': 'https://scholar.google.com/scholar?q=Nature&hl=en',\n",
       " 'raw_html_file': 'https://serpapi.com/searches/a607dc9d63db3f82/6888f0a8aa0a88fab076608b.html',\n",
       " 'total_time_taken': 2.03}"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results['search_metadata']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "id": "b0bfa8f6",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'engine': 'google_scholar', 'q': 'Nature', 'hl': 'en'}"
      ]
     },
     "execution_count": 25,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results['search_parameters']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "id": "11ac90aa",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'organic_results_state': 'Results for exact spelling',\n",
       " 'total_results': 6550000,\n",
       " 'time_taken_displayed': 0.05,\n",
       " 'query_displayed': 'Nature'}"
      ]
     },
     "execution_count": 26,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results['search_information']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "id": "2230e88a",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "dict_keys(['search_metadata', 'search_parameters', 'search_information', 'organic_results', 'related_searches', 'pagination', 'serpapi_pagination'])"
      ]
     },
     "execution_count": 27,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results.keys()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "id": "c5ee15d6",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'serpapi_cite_link': 'https://serpapi.com/search.json?engine=google_scholar_cite&hl=en&q=YTe6tRNLUg0J',\n",
       " 'cited_by': {'total': 4501,\n",
       "  'link': 'https://scholar.google.com/scholar?cites=959912218608678753&as_sdt=5,29&sciodt=0,29&hl=en',\n",
       "  'cites_id': '959912218608678753',\n",
       "  'serpapi_scholar_link': 'https://serpapi.com/search.json?as_sdt=5%2C29&cites=959912218608678753&engine=google_scholar&hl=en'},\n",
       " 'related_pages_link': 'https://scholar.google.com/scholar?q=related:YTe6tRNLUg0J:scholar.google.com/&scioq=Nature&hl=en&as_sdt=0,29',\n",
       " 'serpapi_related_pages_link': 'https://serpapi.com/search.json?as_sdt=0%2C29&engine=google_scholar&hl=en&q=related%3AYTe6tRNLUg0J%3Ascholar.google.com%2F',\n",
       " 'versions': {'total': 13,\n",
       "  'link': 'https://scholar.google.com/scholar?cluster=959912218608678753&hl=en&as_sdt=0,29',\n",
       "  'cluster_id': '959912218608678753',\n",
       "  'serpapi_scholar_link': 'https://serpapi.com/search.json?as_sdt=0%2C29&cluster=959912218608678753&engine=google_scholar&hl=en'}}"
      ]
     },
     "execution_count": 30,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "results[\"organic_results\"][0][\"inline_links\"]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 58,
   "id": "dc930f05",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Fabrication techniques of superhydrophobic coatings: A comprehensive review\n",
      "Titanium oxide nanoparticles as additives in engine oil\n",
      "Transparent and flexible zinc oxide-based thin-film diodes and thin-film transistors: A review\n",
      "Removal of toxic contaminants from drinking water using biosensors: A systematic review\n",
      "Aluminium doped ZnO nanostructures for efficient photodegradation of indigo carmine and azo carmine G in solar irradiation\n",
      "Unveiling the vision: A comprehensive review of computer vision in AI and ML\n",
      "A consumer-based smart home with indoor air quality monitoring system\n",
      "Synthesis and characterization of powder silica: a judicious recycling of the natural ceramic rice husk ash\n",
      "Poly-4-methyl-1-pentene a dielectric material: Patent landscape\n",
      "Effects of ring indentation, punching, and shot peening treatments on fatigue crack retardation considering modified J-integrals: A comparative study\n"
     ]
    }
   ],
   "source": [
    "for i in results[\"organic_results\"]:\n",
    "    print(i['title'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 59,
   "id": "a07c93ee",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "10"
      ]
     },
     "execution_count": 59,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "len(results[\"organic_results\"])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 69,
   "id": "b2748cfb",
   "metadata": {},
   "outputs": [],
   "source": [
    "url = \"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 70,
   "id": "c0bb0a7f",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "url=None markdown='We use [cookies](https://www.annualreviews.org/cookie-info) to track usage and preferences. [I Understand](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443)\\n\\n1932\\n\\n### [Annual Review of Public Health](https://www.annualreviews.org/content/journals/publhealth)\\n\\n[**Volume 35, 2014**](https://www.annualreviews.org/content/journals/publhealth/35/1 \"\")\\n\\n#### Review Article\\n\\n#### Free\\n\\n# Nature and Health\\n\\n- [Terry Hartig](https://www.annualreviews.org/search?value1=Terry+Hartig&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 1, [Richard Mitchell](https://www.annualreviews.org/search?value1=Richard+Mitchell&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 2, [Sjerp de Vries](https://www.annualreviews.org/search?value1=Sjerp+de+Vries&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 3\\xa0and [Howard Frumkin](https://www.annualreviews.org/search?value1=Howard+Frumkin&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 4\\n- [View Affiliations\\\\\\\\\\n\\\\\\\\\\nHide Affiliations](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#)\\n\\n\\n\\n1Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: [terry.hartig@ibf.uu.se](mailto:terry.hartig@ibf.uu.se)2Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: [Richard.Mitchell@glasgow.ac.uk](mailto:Richard.Mitchell@glasgow.ac.uk)3Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: [sjerp.devries@wur.nl](mailto:sjerp.devries@wur.nl)4School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: [frumkin@uw.edu](mailto:frumkin@uw.edu)\\n\\n- Vol. 35:207-228\\n(Volume publication date March 2014)\\n[https://doi.org/10.1146/annurev-publhealth-032013-182443](https://doi.org/10.1146/annurev-publhealth-032013-182443)\\n- First published as a Review in Advance on\\nJanuary 02, 2014\\n\\n- © Annual Reviews\\n\\n\\n### Abstract\\n\\nUrbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[ [Erratum](http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001)\\\\]\\n\\n**Keyword(s):**[community gardens](https://www.annualreviews.org/search?value1=%22community+gardens%22&option1=pub_keyword \"community gardens\"),\\xa0[green infrastructure](https://www.annualreviews.org/search?value1=%22green+infrastructure%22&option1=pub_keyword \"green infrastructure\"),\\xa0[green space](https://www.annualreviews.org/search?value1=%22green+space%22&option1=pub_keyword \"green space\"),\\xa0[greenspace](https://www.annualreviews.org/search?value1=%22greenspace%22&option1=pub_keyword \"greenspace\"),\\xa0[landscape](https://www.annualreviews.org/search?value1=%22landscape%22&option1=pub_keyword \"landscape\"),\\xa0[parks](https://www.annualreviews.org/search?value1=%22parks%22&option1=pub_keyword \"parks\"),\\xa0[urban forests](https://www.annualreviews.org/search?value1=%22urban+forests%22&option1=pub_keyword \"urban forests\")\\n\\n### Associated Article\\n\\nThere are media items related to this article:\\n\\n[Nature and Health](https://www.annualreviews.org/content/multimedia/10.1146/do.multimedia.2014.05.13.269)\\n\\n### Erratum\\n\\nAn erratum has been published for this article:\\n\\n[Nature and Health](https://www.annualreviews.org/content/journals/10.1146/annurev-pu-35-102115-200001)\\n\\n![Loading](https://www.annualreviews.org/images/jp/spinner.gif)\\n\\nArticle metrics loading...\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n2014-03-18\\n\\n2025-07-29\\n\\n[Download as PowerPoint](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#)\\n\\n- ISSN: 0163-7525, Online ISSN: 1545-2093\\n- DOI: http://dx.doi.org/10.1146/annurev-publhealth-032013-182443\\n- Volume 35, Issue 1, pages 207-228\\n- Copyright © 2014 by Annual Reviews. All rights reserved\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\n# Nature and Health\\n\\nTerry Hartig\\n1\\n; Richard Mitchell\\n2\\n; Sjerp de Vries\\n3\\n; Howard Frumkin\\n4\\n\\n\\n1Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: [terry.hartig@ibf.uu.se](mailto:terry.hartig@ibf.uu.se) 2Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: [Richard.Mitchell@glasgow.ac.uk](mailto:Richard.Mitchell@glasgow.ac.uk) 3Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: [sjerp.devries@wur.nl](mailto:sjerp.devries@wur.nl) 4School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: [frumkin@uw.edu](mailto:frumkin@uw.edu)\\n\\nABSTRACT\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nUrbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[ [Erratum](http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001)\\\\]\\n\\nKeywords\\n\\n- [greenspace](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22greenspace%22),\\n- [green space](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22green%20space%22),\\n- [green infrastructure](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22green%20infrastructure%22),\\n- [landscape](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22landscape%22),\\n- [parks](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22parks%22),\\n- [urban forests](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22urban%20forests%22),\\n- [community gardens](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22community%20gardens%22)\\n\\nINTRODUCTION\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nThe public health field views the natural environment with ambivalence. Infectious agents, extreme weather, and geological events regularly sicken, injure, and kill people, often en masse. Yet, people cannot remain healthy without clean air, clean water, food, and other resources provided as “ecosystem services.” Enormous amounts of research inform these contrasting perspectives, describing how the natural environment harms humans, how health depends on the natural environment, and how human impacts on the natural environment rebound on health.\\n\\nA theme that has become increasingly distinct over recent years concerns the natural environment, or “nature,” perceived, valued, and engaged with as such, particularly in urbanized societies. This research focuses primarily on benefits of contact with nature. Key segments of this literature are young, but central ideas, such as the link between vegetation and air quality, have ancient provenance in the public health field ([82](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B82 \"\")). Interventions prompted by those ideas, such as urban parks, have long remained in place, presumably because the public has enjoyed them and believed in their salutary value. The recent research tests such beliefs, and it encourages more nuanced theoretical and practical consideration of nature-health relations.\\n\\nIn this article, we review work done in recent decades to better characterize the health benefits of contact with nature. We do not cover this body of work comprehensively, but instead we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations. We touch on clinically oriented work on contact with nature in therapeutic contexts, but we do not discuss benefits of companion animals, which may be taken as representations of nature ([42](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42 \"\"); however, see [6](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B6 \"\")). Although the core ideas we discuss have a durable legacy in public health practice, the topic has not previously been the focus of an Annual Review of Public Health article (however, see [44](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B44 \"\"), [80](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B80 \"\")).\\n\\nBelow, we examine the concept of nature, consider reasons for the current expansion of research, and provide a “review of reviews.” We then review research on pathways involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research.\\n\\nDEFINING “NATURE”\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nIn an objective sense, “nature” as used here refers to physical features and processes of nonhuman origin that people ordinarily can perceive, including the “living nature” of flora and fauna, together with still and running water, qualities of air and weather, and the landscapes that comprise these and show the influence of geological processes. As such, “nature” overlaps substantially with “natural environment,” an environment with little or no apparent evidence of human presence or intervention, and the two terms have been used interchangeably.\\n\\nIn practice, however, much research does not accept exclusion of the artificial as a basis for defining nature or natural environment. The nature of interest is often situated in built environments, as with indoor plants and street trees. Similarly, allotment (or community) gardens and urban parks comprise natural features, appear natural, and provide opportunities to engage with and follow natural processes, but they are typically designed, constructed, regulated, and maintained. Research has also acknowledged that a person may experience nature as such when viewing natural elements or landscapes from a building or vehicle, in photographs and films, or in virtual reality setups.\\n\\nThe term “urban nature” is instructive. It admits the presence of nature even in those human environments that some consider the antithesis of the natural. Yet, just as it puts the urban and natural together, it also sets them apart. It exemplifies how contacts with nature in an urbanized society occur within a frame of reference shaped in an everyday life oriented in various ways to the society\\'s urban circumstances.\\n\\nThe term “nature experience” is used in some segments of this research to emphasize the subjective perception and evaluation of relevant environmental features ([67](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67 \"\")). It is, however, not a purely individual subjectivity, nor is it fixed. An individual\\'s experience of nature occurs within and carries further the long-running exchange between the society and its environment ([48](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B48 \"\")).\\n\\nIn sum, although nature has a wide variety of objective referents, it is also experienced subjectively and is effective as a social construction (for further discussion, see [106](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B106 \"\")). Accordingly, researchers represent nature with diverse physical and spatial variables, encountered in diverse activity contexts. Some also apply measurement, analysis, and design strategies to tap into the subjective experience of the environment. Because opportunities for contact with nature, ways of encountering nature, and experiences of nature vary across sociocultural contexts, researchers have examined variation in outcomes not only among individuals within given populations, but also across populations ([108](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108 \"\")).\\n\\nSOME REASONS FOR THE CURRENT RESEARCH EXPANSION\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nGrowth in this field of research is shown clearly by the increase in publications. For example, a search in the Web of Knowledge on just one term, “greenspace and health,” yielded 2 hits for 1990–1999, 34 for 2000–2009, and 45 from 2010 to June 2013.\\n\\nWhy is this expansion occurring? Motives for involvement in the field vary. Some work reflects concerns that urbanization, environmental degradation, and lifestyle changes are quantitatively and qualitatively diminishing possibilities for human contact with nature. For example, dense urban settings, if poorly designed (without accessible green space), may reduce opportunities for stress-reducing nature contact as well as increase exposure to environmental stressors ([53](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B53 \"\")). Other work considers nature as just one aspect of the physical environment that is potentially beneficial for health. For example, epidemic obesity in some countries has focused attention on sedentary lifestyles and environmental supports for physical activity, including but not limited to nearby parks ([24](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B24 \"\")). In general, the research aims to inform practical measures that directly or indirectly involve access to nature, including provisions for housing, transportation, and recreation.\\n\\nChange in thinking about health has also enabled expansion of the research field. With the epidemiologic transition to chronic, lifestyle-related diseases as the major causes of mortality, biopsychosocial explanation ([33](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B33 \"\")) came to compete with the biomedical model, and constructs such as “psychological stress” and “social support” came into widespread use. This development has suited a field populated mainly by people trained in disciplines (e.g., human geography, environmental psychology, social epidemiology) and professions (e.g., outdoor recreation management, landscape architecture, urban forestry) that take interest in how people perceive, interpret, evaluate, and act on the environment. The conception of health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity” ([138](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B138 \"\"), p. 100) has also been influential for its heuristic value and as a basis for action. By acknowledging the positive, multidimensional character and subjective aspects of health, this concept supports the involvement of a wide variety of actors in efforts to understand and support health, including but not limited to those trained to treat symptoms of ill-health ([132](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B132 \"\")). Research in the field accordingly represents health in many ways, not only with regard to forms of morbidity ([86](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86 \"\")), causes of mortality ([94](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94 \"\")), and longevity ([119](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B119 \"\")) but also with regard to self-reported health ([26](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26 \"\")) and diverse intermediate outcomes involving different pathways, such as beneficial change in emotional and physiological markers of stress measured during visits to natural areas ([3](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B3 \"\"), [49](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49 \"\")).\\n\\nMethodological and conceptual advances are also feeding the expansion of the field; old and new topics are being studied with a range of new tools. For example, beliefs about stress-reducing effects of park visits are widespread and long-standing ([101](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B101 \"\")), but experimental testing of such effects is a relatively recent activity ([52](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B52 \"\"), [125](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B125 \"\")). These small-scale experimental demonstrations of pathway plausibility informed the first large-scale epidemiologic studies to assess associations between contact with nature and health ([26](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26 \"\"), [87](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87 \"\"), [93](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B93 \"\")). Those studies used resources and techniques that only recently became available. For example, they used land-use data extracted from satellite images with digital technologies to describe the spatial extent of different kinds of nature accessible to the given individuals and groups in their residential contexts.\\n\\nHaving considered some of the developments in societies, sciences, and professions that have motivated and enabled the recent expansion of this field, we turn now to examine the research in more detail, starting with previous efforts to review the literature.\\n\\nREVIEW OF REVIEWS\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nMany review articles on nature and human health have been published in recent years. Assessing them is one means of summarizing the state of the field in terms of what is known and the quality of the research. In April 2013, we undertook a systematic search for reviews. We used Medline and all Web of Knowledge databases to identify peer-reviewed papers, sought nonindexed, non-peer-reviewed (gray) literature, and online reviews via Internet searches, and examined citation lists of already identified reviews. We included review articles or reports relevant to relationships between nature and human health and well-being. Inevitably, because the topic boundaries of nature and health are fuzzy, relevance was sometimes difficult to establish. For example, reviews on environmental correlates of physical activity often include access to urban parks or trails among many other environmental characteristics, but they may not focus on natural environments. We identified 59 relevant reviews at the time of the search (see [Supplemental Material](http://www.annualreviews.org/doi/suppl/10.1146/annurev-publhealth-032013-182443)). Of the peer-reviewed articles, most appeared in journals concerned with public health or environmental planning.\\n\\nThe reviews varied considerably in methodology and guiding aims. We observed three broad search-and-synthesis approaches: (a) narrative reviews, not clearly based on a systematic literature search (n = 24); (b) narrative reviews based on a systematic literature search or comprehensive case identification (n = 13); and (c) full systematic reviews based on an exhaustive literature search (n = 22). The reviews tended to have one of four general aims. First, systematic reviews sought to collate and synthesize all evidence for the effects of specified contacts with nature on specified markers of health (e.g., [2](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2 \"\"), [123](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123 \"\")). Second, summary reviews often aimed to introduce the field, explain its concepts and the mechanisms by which natural environments might affect health, and then set out some evidence for effects (e.g., [54](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54 \"\"), [89](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B89 \"\")). Some were published as gray literature and had been commissioned by governmental or nongovernmental agencies. A third group included what might be labeled “flag-waving” reviews (e.g., [42](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42 \"\"), [95](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B95 \"\")). These were aimed at introducing the topic to a new audience and were often relatively brief. Fourth, and fewer in number, were conceptual reviews, methodological reviews, or those proposing new theoretical perspectives (e.g., [8](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B8 \"\"), [79](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B79 \"\")).\\n\\nReviews also varied by the environments and/or pathways to health discussed. Physical activity had the most dedicated coverage as the focus of 18 reviews (e.g., [65](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B65 \"\"), [90](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90 \"\")). Mitigation of poor air quality/urban heat problems and physiologically/psychologically restorative effects also had dedicated reviews (e.g., [12](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B12 \"\"), [15](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B15 \"\"), [19](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19 \"\")). Twenty-six of the reviews addressed multiple mechanisms. The reviews covered a wide range of natural features and environmental categories, including indoor plants ([16](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B16 \"\")), urban parks ([90](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90 \"\")), and forests ([22](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B22 \"\")), but coverage was uneven. Urban parks were the most commonly considered setting. Two categories of environments were conspicuously underrepresented or absent; rural areas had just one review ([41](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B41 \"\")), and there were no review articles about gardens or allotments or community gardens other than those used for therapeutic purposes. Also, very few reviews focused on population subgroups. Children were the most commonly considered subgroup (e.g., [91](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B91 \"\"), [96](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B96 \"\")). We found no reviews dedicated to differences in relationships between nature and health by gender, ethnicity, or socioeconomic position.\\n\\nGiven this variety in method, aims, and focus, we find it interesting that there was strong agreement about the methodological state of the art. Reviews commonly concluded that the field remains dominated by observational study designs. Reviews agreed that too few primary studies have been carried out in a consistent and rigorous way to establish the causality of relationships between contact with nature and health. They agreed, too, that few primary studies have explored how effects may vary by population subgroup, by type of natural environment, or by type of contact with nature. Many reviews commented that consistent and objective measurement of both exposure to nature and health-related outcomes remains elusive.\\n\\nWe identified three weaknesses in the reviews with specific relevance to this field. First, search strategies did not always address the variety of environments or settings that count as “natural.” It is necessary to enter multiple terms into the literature search to avoid missing important work. For example, urban parks may be described by one or more of park, green space, greenspace, green areas, open space, recreational space, natural space, natural environment, etc. Building a review of relevant literature on a search for “green space” or “park” alone, for example, is inadequate.\\n\\nSecond, reviews from individual-based disciplines such as psychology tended to ignore evidence from population-based disciplines such as epidemiology, and vice versa. A great strength of this field is that evidence exists to describe benefits of contact with nature at multiple levels, from laboratory experiments tracking individuals\\' physiological reactions to viewing natural scenes through to studies of differences in population mortality rates between more and less green cities. Each level and scale of study provides important components in understanding what contact with nature can and cannot do for human health.\\n\\nThird, the variety of health outcomes used in primary studies was not well addressed. When reviews try to synthesize results from outcome measures that are sensitive to contact with nature in different ways, and for different durations, messages become clouded. The pooling of results from heterogeneous outcome measures may be motivated by a lack of multiple studies using consistent measures and study designs. However, failure to appreciate differences among outcome measures leads to mischaracterization of the evidence base. Heterogeneity in outcome measures used in primary studies perhaps explains the relatively small number of reviews that attempted a pooled analysis. The body of reviews consequently tells us little about effect size.\\n\\nOverall, the reviews generally agreed that beneficial effects from contact with nature do occur and that these effects are plausibly connected to the mechanisms proposed in guiding theory. However, most of the evidence covered by the reviews related to intermediate health-related outcomes such as amount of physical activity, amount of social contacts, changes in physiological activity (e.g., cardiovascular, neuroendocrine, and musculoskeletal changes characteristic of stress reduction), changes in emotional states (e.g., increased happiness, decreased anger), and changes in cognitive capability (e.g., performance on standardized tests of executive attention) rather than to disease states or measures of mortality. The reviews found less evidence that traced full pathways from contact with nature, to measures reflecting the operation of the given mechanism(s), and on to longer-term outcomes. Thus, it is unsurprising that the reviews generally suggest that the evidence is not yet good enough to say when, where, and for whom given effects will occur or how large or long-lasting they will be.\\n\\nPATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nContact with nature may affect health via multiple pathways. Pathways that have received relatively large amounts of research attention involve air quality, physical activity, social cohesion, and stress reduction. We describe each of these pathways and indicate some of the complexities involved in drawing conclusions about its role, including variation in association across people, activities, and characteristics of the nature under study. The pathways emphasize different aspects of nature, as physical environment, as setting for (individual and social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously and affect one another, a point to which we return at the end of this section. The different pathways and possibilities for effect modification by individual or contextual variables are illustrated in [Figure 1](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1 \"\").\\n\\nFigure 1Some pathways through which the natural environment can affect the health of broad segments of populations. Four of the pathways go through contact with nature, whereas two others go directly from the natural environment to air quality and stress, respectively, implying that the natural environment may affect health without an individual or group consciously engaging with nature as such. Associations between variables at the different steps in a given pathway are subject to modification by characteristics of the people or the context. The two-headed arrow between the natural environment and contact with nature acknowledges that these are joined in a reciprocal relationship. The two-headed arrows between the variables designating pathways (air quality, physical activity, social contacts, and stress) also speak to their reciprocal relatedness; however, each may be related with all the others and not only with the one adjacent. Abbreviations: CHD, coronary heart disease; CVD, cardiovascular disease.\\n\\n[![                   Figure 1\\u2002                ](https://www.annualreviews.org/docserver/ahah/fulltext/publhealth/35/1/pu350207.f1_thmb.gif)\\\\\\\\\\n\\\\\\\\\\nFigure 1\\u2002\\\\\\\\\\n\\\\\\\\\\n\\\\\\\\\\nClick to view](https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.gif) [Download as PowerPoint](https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.ppt?mimeType=application/vnd.ms-powerpoint)\\n\\nAir Quality\\n\\nTrees, shrubs, and other vegetation may affect ambient air quality and, through it, human health and well-being. There are both positive and negative impacts. Trees and other vegetation may reduce levels of some pollutants, including gases and particulate matter (PM), but they may also contribute to air pollution by releasing hydrocarbons. Some trees and plants release pollen, aggravating allergies. Finally, trees improve air quality indirectly when they cool urban environments and reduce building energy demand.\\n\\nTrees and other vegetation can reduce levels of gaseous air pollutants \\\\[e.g., ozone, oxides of nitrogen (NOx), oxides of sulfur\\\\] and PM ([37](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B37 \"\")). For gases, the primary mechanisms of action are uptake by leaf stomata, absorption, and adsorption to plant surfaces. PM removal occurs through deposition on leaves and other plant surfaces ([7](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B7 \"\")). However, most PM is resuspended to the atmosphere, washed off by rain, or dropped to the ground ([100](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100 \"\")). Empirical studies (e.g., [34](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B34 \"\"), [113](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B113 \"\")) and modeling studies (e.g., [103](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B103 \"\"), [120](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B120 \"\")) suggest that urban tree canopy generally reduces air pollution levels by no more than a few percentage points, and often far less, although some results suggest more efficient removal of PM ([59](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B59 \"\"), [63](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B63 \"\")) and certain volatile organic compounds (VOCs) ([70](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B70 \"\")). Because trees may reduce air movement, especially in restricted spaces such as urban “canyons,” they may impede the localized dispersion of pollutants. Local factors such as the density, species composition, and age of the tree canopy, the concentration of air pollutants, and the length of the in-leaf season influence the extent of pollutant removal.\\n\\nPlants may also affect indoor air quality—an important observation because people in developed nations may spend as much as 90% of their time indoors. VOCs such as benzene and formaldehyde may derive from furniture, carpets, cleaning agents, paint, and other sources. Indoor plants, especially such species as English ivy and spider plant, have been shown to reduce levels of many VOCs ([81](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B81 \"\"), [140](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B140 \"\")). Bacteria in the soil may account for some VOC scavenging attributed to the plants ([102](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B102 \"\")).\\n\\nIn contrast to pollutant removal, trees can also be a source of hydrocarbons, including isoprene and terpenes, with considerable variation by species ([9](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B9 \"\")). These biogenic hydrocarbons may function as precursors of ozone and secondary organic aerosols ([20](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B20 \"\"), [74](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B74 \"\")). Modeling studies have assessed the relative contribution of biogenic emissions to pollution levels (e.g., [112](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B112 \"\")). Results vary depending on the species of trees in a canopy, local atmospheric chemistry (especially levels of other precursors, such as NOx), local weather, and other factors.\\n\\nTrees, grasses, and other plants release pollens, which can aggravate allergies and asthma in susceptible people ([18](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B18 \"\"), [27](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B27 \"\")). The culprits vary with geography but include ragweed, grasses (e.g., Timothy, Bermuda, bluegrass), and trees such as catalpa and walnut. In cities that have favored trees that are heavy pollen producers, the health impact may be especially significant ([19](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19 \"\")). A study of African American and Dominican children in New York City found a small but significant association between tree canopy extent and asthma and allergic sensitization ([83](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B83 \"\")). Hence, in some circumstances, the allergenic role of trees may eclipse their ability to improve health by reducing air contaminants.\\n\\nVegetation, especially trees, may also indirectly benefit air quality. During warm weather, trees reduce summer air conditioning demand by shading and hence cooling buildings and through the cooling effects of evapotranspiration. This effect, in turn, reduces energy demand, which, in areas served by coal-fired power plants, reduces air pollution derived from coal combustion, though not necessarily at the same location ([1](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B1 \"\")). During cold weather, the reverse can happen. In a simulation study in Sacramento, trees reduced the need for cooling energy in summer about three times more than they increased the need for warming energy in winter ([114](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B114 \"\")). The monetary benefits of energy savings related to trees may exceed those of the pollutant removal ([13](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B13 \"\")).\\n\\nThe overall impact of vegetation on air quality is therefore a function of several processes, operating in opposing directions: hydrocarbon emissions, pollen production, pollutant uptake, and effects on energy demand. Careful selection of species, design of planting configurations with regard to wind, shade, and other impacts, and maintenance of urban vegetation can optimize the beneficial effects on air quality ([30](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B30 \"\"), [100](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100 \"\")).\\n\\nPhysical Activity\\n\\nPhysical activity promotes physical and mental health across the life span ([10](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B10 \"\"), [61](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B61 \"\")). Recent evidence suggests that the health benefits of increased physical activity are largest among those who were initially doing the least ([104](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B104 \"\")). The outdoor environment may influence how physically active an individual is by offering suitable spaces for certain types of activities. It may also attract people outdoors because of the experiences it offers. Such outings ordinarily entail some form of physical activity, usually walking.\\n\\nAn important precondition for the use of natural environments for physical activity is individuals\\' (perceived) safety ([62](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B62 \"\")). Although there are possible negative effects associated with physical activity (e.g., sports injuries) as well as with being in a natural environment (e.g., Lyme disease from tick bites), most of these effects are not specific to physical activity in a natural environment.\\n\\nGreen space is only one part or aspect of the physical environment relevant for physical activity. Which environmental characteristics promote or hamper physical activity may depend strongly on the type of activity at hand ([5](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B5 \"\")). Three broad activity domains may be identified: work (including study), active transport (walking, cycling), and leisure (recreation, sport). Within the work domain, the greenness of the setting is thought to be of little importance for the amount of physical activity. The same is not true for active transport. Natural features may lead people to favor walking or cycling over other transport modes by making routes to destinations more attractive; however, distance to destination, availability of suitable infrastructure (e.g., sidewalks, bicycle paths), and safety are more important factors ([55](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55 \"\")). The evidence for association between green space and active transport (walking and/or cycling) is mixed, and this heterogeneity has been well summarized by recent systematic reviews ([40](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B40 \"\"), [78](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B78 \"\")). Reasons for (noncausal) negative associations may be that large amounts of green space tend to go together with (a) greater distances to destinations, (b) higher levels of car ownership, and (c) better availability and lower cost of car parking spaces near one\\'s home ([28](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B28 \"\"), [55](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55 \"\")).\\n\\nThe importance of natural environments for fostering physical activity may vary by population subgroup. Children are perhaps the most commonly studied subgroup in this context, but again results are mixed. In one review ([29](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B29 \"\")), ∼40% of the studies in which environmental characteristics were objectively measured showed park access or vegetation to be positively associated with children\\'s physical activity levels; in the other 60% of the studies, no association was observed. A further systematic review ([35](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B35 \"\")) concluded that for (young) children the safety of the environment as perceived by their parents was an important moderating factor. Results from studies of older people are also mixed; two recent systematic reviews arrived at different conclusions. One ([128](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B128 \"\")) reviewed studies on the physical environment in general and concluded that there was no clear relationship between green space (and most other physical environmental characteristics) and physical activity of older people. The other specifically focused on green space, however, and it observed that seven out of eight studies showed a positive relationship between the greenness of the living environment and physical activity levels of older people ([17](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B17 \"\")). It also concluded that the perception of safety is an important moderating factor.\\n\\nRelatively little attention has been paid to the relevance of specific environmental characteristics, such as the type of greenery or the quality of the open space. Results are again mixed. One study ([46](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B46 \"\")) concluded that very good access to large, very attractive public open space was associated with higher levels of walking. Another ([56](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B56 \"\")) by contrast observed no relationship between access to large, high-quality urban green spaces and recreational physical activity. A third study ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\")) observed a relationship of quality (but not quantity) of streetscape greenery with “green” activity, though not with total physical activity. Finally, recent results suggest that community gardening is associated with a lower body mass index ([141](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B141 \"\")).\\n\\nGiven that physical activity is assumed to be an important pathway joining nature with health, we find it surprising that few studies have formally investigated the extent to which any association between nature and health might be mediated by physical activity levels. Of four studies done ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\"), [88](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B88 \"\"), [109](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B109 \"\"), [118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")), only one ([118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")) concluded that physical activity (more specifically recreational walking) was indeed an important mediator.\\n\\nFinally, we note that most of the studies referred to in this overview have been cross-sectional in nature. Hence, the direction of observed relationships remains open to alternative explanations. For example, some people may choose a highly car-dependent (and presumably more green) living environment because they are not inclined to be physically active anyway ([32](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B32 \"\")).\\n\\nSocial Cohesion\\n\\nMuch as for physical activity, abundant research has documented positive associations between social relationships and health and well-being ([57](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B57 \"\"), [97](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B97 \"\")). Such salutary associations have also been observed for positive relationships specifically within the neighborhood ([110](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110 \"\")). A variety of terms have been introduced to reflect the potential value of social relationships in this context, including social capital, social support, social cohesion, and sense of community. Although these terms are often used interchangeably ([4](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4 \"\"), [110](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110 \"\")), we draw a distinction here between social capital and social cohesion. Social capital comprises primarily those resources available to an individual through his or her social connections, which may be activated in times of need. In contrast, social cohesion refers to shared norms and values, the existence of positive and friendly relationships, and feelings of being accepted and belonging (cf. 36). We prefer to use the term social cohesion here because it is more a characteristic of neighborhoods than of individuals ([4](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4 \"\")) and so more likely to be influenced by physical characteristics of the neighborhood, such as the availability and quality of green space and natural elements.\\n\\nUnlike physical activity, the environmental correlates of social cohesion have received little research attention thus far. Generally, the few studies available suggest a positive relationship between social cohesion and natural environments ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\"), [38](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B38 \"\"), [85](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85 \"\"), [118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")). Sugiyama et al. ([118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")), for example, found perceived social coherence and local social interaction to be associated with the perceived greenness of the neighborhood. De Vries et al. ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\")) found an association between streetscape greenery and perceived social cohesion at the neighborhood scale, both for the quantity and, even more strongly, for the quality of greenery.\\n\\nSocial cohesion within a neighborhood does not lend itself to experimental research, which makes it difficult to determine whether relations with environmental features are causal. A few studies have, however, taken advantage of circumstances that likened a natural experiment. Researchers in Chicago ([77](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77 \"\")) took advantage of quasi-random assignment of public housing residents to dwelling units in architecturally similar high-rise buildings with varying amounts of vegetation outside. They found a positive association between the presence of trees and grass on the use of common spaces and informal social contact with neighbors. Moreover, the relationship between greenery and social contacts appeared to be mediated by the use of the common spaces.\\n\\nThe research in Chicago ([77](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77 \"\")) also showed that social contact was positively related to one\\'s sense of safety. Subsequent studies showed that residents with more trees and grass around their buildings displayed less aggressive behavior, and their buildings were associated with fewer crimes ([75](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75 \"\"), [76](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76 \"\")). More recent research suggests similar positive effects of greening vacant lots, especially a reduction in gun assaults and disorderly conduct ([14](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14 \"\")).\\n\\nOther attributes of the environment may moderate any association between natural features and social cohesion. Arguably, local parks must be well maintained and provide attractive recreational facilities to realize their full potential in developing social ties ([71](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B71 \"\")). Although green space generally is positively associated with feelings of safety, in dense urban areas enclosed green spaces may reduce such feelings ([84](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B84 \"\")). Similarly, trees in the public realm have been associated with reduced crime rates, but small trees on private lots have been associated with increased crime rates, presumably because these trees make it more difficult to observe criminal activity ([31](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B31 \"\")). Some natural settings, such as community gardens, incorporate social ties almost by definition. In one study, older allotment gardeners reported having more contacts with friends and felt less lonely than did nongardening neighbors in the same age category ([131](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B131 \"\")).\\n\\nThe question remains whether social cohesion, sense of safety, aggressive behavior, and crime rates mediate an eventual relationship between contact with nature and health. Results from a few cross-sectional studies bear on this point. One found that social cohesion partially mediated the relationship between perceived neighborhood greenness and mental health ([118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")). Another concluded that feelings of loneliness and perceived shortage of social support partially mediated the relationship between the amount of green space within one kilometer and overall health ([85](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85 \"\")). A third found that social cohesion mediated relationships between quantity and quality of streetscape greenery and both overall health and mental health ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\")). In contrast, Francis et al. ([39](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B39 \"\")) found neither sense of community nor social support to be an important mediator of the relationship between the quality of public open space and mental health. No studies were identified on mediation by aggressive behavior, fear of crime, and/or crime rates.\\n\\nStress Reduction\\n\\nBy helping people maintain adaptive resources needed to meet the demands of life, nature can reduce risk of illnesses involving chronic stress, as well as promote a range of intermediate outcomes such as increased subjective well-being. It can do so in two general ways. First, natural areas and features can reduce exposure to challenging environmental conditions by increasing distance to stressors and/or decreasing their perceptual salience. For example, green spaces between residences and heavily trafficked roads can reduce occupant noise annoyance ([99](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B99 \"\")), vegetation can conceal displeasing structures ([115](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B115 \"\")), and landscaping around housing can help residents maintain privacy and avoid feelings of crowding ([23](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B23 \"\")).\\n\\nSecond, nature can help people restore their adaptive resources. Escape from physical and social stressors has long been described as an important motive for recreation in natural areas ([58](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B58 \"\"), [72](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72 \"\")). Nature\\'s restorative quality does not, however, depend only on an absence of stressors; its restorative quality is also defined in positive terms. Another persistent motive for outdoor recreation has been appreciation of nature—for beautiful scenery, symbolic qualities, and other valued attributes ([72](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72 \"\")). Push and pull motives also work in tandem in contexts other than outdoor recreation, notably the residential context. For example, residential location decisions commonly reflect efforts to both minimize stressful exposures and enhance access to restorative amenities, including green (or blue, i.e., water) areas ([51](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B51 \"\")).\\n\\nThis motive combination appears in two theories about how nature can promote more rapid and complete restoration than other environments can. They offer contrasting views on how restoration can proceed once a person has gained psychological distance from threats and other demands. Psychoevolutionary theory holds that, for a person experiencing acute stress, nature contact can very rapidly evoke positive affect, which in turn blocks negative thoughts and feelings and fosters reduction of physiological activation ([126](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B126 \"\"), [127](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B127 \"\")). Evolution purportedly conserved this functional aesthetic response because more rapid recovery from acute stress would have helped proto-humans better prepare for the next survival task. In contrast, attention restoration theory holds that effortless attention engaged by intrinsically interesting aspects of nature enables rest for a fatigued neurocognitive inhibitory mechanism engaged when willfully directing attention ([67](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67 \"\"), [68](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68 \"\")). People must inhibit task-irrelevant stimuli as they direct their attention at work and in many other circumstances. Fatigue of this directed attention capability occurs commonly, undermines effective action, and can increase susceptibility to stress ([68](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68 \"\")).\\n\\nInformed by one or both of these theories, true and quasi-experiments done in laboratory and field settings have assessed diverse affective, cognitive, and physiological effects of more and less natural comparison conditions, realized over varying but generally brief time spans after a naturalistic or experimental induction of a need for restoration. Published studies generally report some restorative advantage of nature, and by 2004, reviewers had judged the evidence for restorative effects of nature to be strong ([54](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54 \"\")). More recently, methodological heterogeneity led other reviewers ([11](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B11 \"\")) to include only 3–6 studies in quantitative syntheses for each of several outcomes. They concluded, nonetheless, that the available studies provided reliable evidence of reductions in self-reported anger, fatigue, anxiety, and sadness and an increase in feelings of energy. They also found tentative evidence of enhanced attention. Conclusions regarding physiological effects were limited by a lack of studies that had the desired design features. Studies done since that 2010 review have further expanded the body of experimental evidence in several directions: additional comparison conditions \\\\[e.g., more or less open vegetation ([45](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B45 \"\")); encountered in different ways, e.g., work site desktop relaxation packages ([60](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B60 \"\"))\\\\], alone or in company ([64](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B64 \"\")), and in additional subpopulations \\\\[e.g., children with attention deficit disorder (ADD) ([121](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121 \"\")), with effects registered using additional measurement techniques (e.g., cortisol; [129](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B129 \"\"))\\\\].\\n\\nOther research assumes cumulative health effects of more effective restoration on many occasions over time. That work is bolstered by studies that situate repeated contact with nature into an ongoing process of self-regulation. Such studies recognize that some people learn that natural settings are more likely than other settings to be restorative. Over time, they apply this knowledge to better manage adaptive resources such as attentional capacity ([69](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B69 \"\"), [73](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B73 \"\"), [116](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B116 \"\")). When and how that learning begins remain understudied, but childhood experience appears influential for environmental attitudes measured in later life ([133](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B133 \"\"), [136](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B136 \"\")). Some research does suggest that restorative childhood contact with nature can cumulatively provide benefits with far-reaching developmental significance. Contact with nature may for example improve attentional function in children with ADD ([121](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121 \"\")) and enhance self-discipline in children without a diagnosis ([122](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B122 \"\")).\\n\\nObservational studies commonly cite nature\\'s cumulative stress-reducing or restorative effects as one plausible pathway by which residential green space might affect perceived health ([26](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26 \"\"), [87](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87 \"\")), diverse forms of morbidity ([86](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86 \"\")), and death from circulatory disease and other causes ([94](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94 \"\")). To date, however, most studies with individual data have not directly addressed a stress-reduction pathway owing to a lack of measures suitable for assessing mediation. One early quasi-experiment did however assess mediation with reference to attention restoration ([76](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76 \"\")), and some recent surveys have begun to address this issue with self-report measures ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\"), [117](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B117 \"\")). Another study has considered variation in the level of cortisol as a biomarker of chronic stress in members of a community sample living in more or less green circumstances ([134](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B134 \"\")); such a measure could serve tests of mediation of the effect of nature on stress-related illnesses.\\n\\nSome studies have framed nature as a stress buffer, which has entailed estimating the interactive effect of stressful demands and access to nature on some health outcome. Several studies focused on nature in the residential context are illustrative. In a study done in rural New York state, conflicts at school experienced during the preceding three months were less strongly associated with psychological distress in children who had more nature in and around the home ([135](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B135 \"\")). In a Dutch study, the relationships between stressful life events in the previous three months and both health complaints and perceived general health were weaker among those with more green space within 3 km of the home ([130](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B130 \"\")). In an ecological study covering the population of England, high income deprivation had a weaker association with all-cause and circulatory disease mortality among people living in areas with relatively large amounts of green space ([94](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94 \"\")).\\n\\nIn sum, substantial evidence speaks to the potential benefits of contact with nature for avoiding health problems traceable to chronic stress and attentional fatigue; however, the greater part of this evidence concerns the short-term restorative benefits of single encounters with or experiences in nature.\\n\\nThe Pathways Intertwine\\n\\nDiscussions of air quality, physical activity, social cohesion, and stress-reduction pathways emphasize different aspects of nature: as physical environment, as setting for (individual or social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously, as illustrated in [Figure 1](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1 \"\").\\n\\nMost individual studies have focused on one particular pathway from nature to health, but some research has addressed combinations involving two or more of them. Much of this work has recognized links between physical activity and stress reduction. People commonly engage in physical activity not only or even primarily because it will serve their health in the long run, but also because it helps them to feel good in the short run, sometimes by reducing tension and stress. Conversely, people who want to enter a natural environment for restoration ordinarily must engage in some form of physical activity to do so. Accordingly, experiments have found “green exercise” more psychologically beneficial than the same exercise in settings with relatively little nature ([92](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B92 \"\"), [105](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B105 \"\")). Thus, being active in natural settings may yield health benefits over and above the benefits of physical activity in other environments (for a meta-analysis, see [123](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123 \"\")). Conversely, a person walking or running along city streets may have to endure aversive conditions that reduce the benefits of the activity itself ([49](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49 \"\")).\\n\\nMultiple pathways may be purposefully combined in cultural practices that regularly bring people in contact with nature. For example, community gardening may promote social contacts during moderate physical activity that also supports restoration from stress associated with work or other demands. The Japanese practice of Shinrin-yoku, or forest-bathing, involves beliefs about the salutary values of certain substances in the air, and it entails behaviors that ordinarily promote stress reduction (e.g., distancing oneself from everyday demands, adopting a meditative stance) ([124](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B124 \"\")).\\n\\nSome cultural practices that engage multiple pathways may however not be salutary for all population subgroups. For example, in some countries, many households maintain a simple, inexpensive leisure home in the countryside, to which family members ordinarily travel together during vacation periods; however, as a domestic setting, the leisure home may also impose unwanted demands and on some household members more than others. Swedish research found that, after several years of follow-up, employed men who owned a leisure home had lower odds of retiring early for health reasons ([50](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B50 \"\")); however, this prospective association did not hold for women. Indeed, among highly educated and highly paid women, the likelihood of early retirement for health reasons was greater if they also owned a leisure home. Other studies have also indicated a potential gender difference in the nature-health relationship (e.g., [107](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B107 \"\")).\\n\\nMETHODOLOGICAL CHALLENGES\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nIn addition to the usual methodological concerns in experimental and epidemiologic research, we must tackle a litany of specific methodological challenges if we are to develop our understanding of the degree to which, how, and under which circumstances contact with nature affects human health and well-being.\\n\\nMeasuring Exposure to Nature\\n\\nContact with nature challenges definition and control in field and laboratory experiments, and it is even more difficult to assess in free-living populations. Studies at population level typically assess exposure in one of three ways: assessments of exposure by how much nature there is in, or close to, the participants\\' area of residence; survey questions about how much time, and/or how often, people visit natural environments; and objective measures of contact via GPS (global positioning systems) technology. Each method has problems; that people live near natural spaces, report visiting them, or position themselves spatially within them does not mean that individuals actually have had contact with nature in a way that affects their health. None of these measures includes visual contact with nature from, for example, windows at home or in the workplace, which may also have beneficial effects ([66](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B66 \"\")). Furthermore, these measures typically miss fine details of exposure that may be important, such as the timing of exposure (e.g., for many environmental exposures, specific windows of vulnerability exist across the life span), the seasonality of exposure (e.g., the role of deciduous trees being in leaf), the quality of the nature (e.g., area in mature trees versus immature trees versus shrubs versus lawn), and the duration of exposure.\\n\\nMeasuring Outcomes\\n\\nThe other end of the equation between natural environment and health is the assessment of health itself. Plausible health impacts are varied and multiple, positive and negative, psychological and physiological, short term and/or long term. This plurality means many different health measures can be used, which, in turn, makes it difficult to achieve a coherent body of research. There is a particular challenge in bridging what we know about effects of contact with nature from small-scale, shorter-term experimental studies and what we might expect to observe as effects in the real world at the population level. For example, it is difficult to determine what the fall in blood pressure on viewing nature, established in experimental studies, might mean for rates of heart disease among regular visitors to national parks. There is no simple solution to this challenge and no one clearly superior set of instruments or measurements that are suited to use in all settings and studies.\\n\\nUnderstanding Mechanisms\\n\\nUnderstanding how any relationship between nature and health happens can aid interventions that promote possible benefits. It is also vital for specifying who might benefit most and least from the relationship. The challenge is that, as we have noted, the mechanisms by which nature might affect health are multiple and synergistic. They likely vary in significance within a single contact with nature, between contacts, across the life course, between population subgroups, between environment types and across cultures. Understandings of mechanisms being developed in the relatively controlled conditions of experiments should eventually help epidemiologists to form better hypotheses about the variation in associations they could expect at a population level.\\n\\nDemonstrating Causality at a Population Level\\n\\nPositive, short-term effects of contact with nature on affect, cognition, and physiology have been reasonably well established in laboratory and field experiments. However, cross-sectional designs still dominate studies of long-term health outcomes measured in populations. The vulnerability of these designs to confounding and reverse causality is a particular problem. The likelihood of contact with nature is strongly patterned by socioeconomic, ethnic, age, and cultural characteristics, which are, themselves, linked to health. Richardson et al. ([108](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108 \"\")) provide a fine example of the potential for confounding factors to obscure relationships between green space and health at a population level.\\n\\nBoth experimental and longitudinal observational designs are potential routes to better evidence for a causal relationship among free-living populations. For studies of nature and health, however, both types of study impose specific challenges. Experimental studies at a population level are hard to perform. Manipulating environments or people is difficult and expensive. Scientists often must rely on public agencies or authorities to fund and deliver environmental changes, such as the creation of a new park or trail. It can also be difficult to establish and maintain control sites or populations, and opportunities to randomize the receipt of environmental interventions to different communities are rare. Useful results have emerged from quasi-experimental and before-after studies that capture some of the attributes of true experiments ([14](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14 \"\"), [75](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75 \"\")). The timescale for effects is also often a constraint. Funding to follow-up intervention studies is rarely longer than 3–5 years, but effects at a population level (perhaps even intergenerational effects) may take longer to establish.\\n\\nResearch on nature and health has been undertaken within different scientific paradigms. Attitudes toward the level of proof for an association, indeed attitudes toward the very idea of “proof,” vary between paradigms and are contested within them. Biomedical research, for example, often places great emphasis on low p-value thresholds for acceptance of an association. Frumkin ([43](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B43 \"\")) recently suggested, however, that the application of stringent p-value thresholds needs careful and explicit reconsideration in studies of nature and health. Moving from partial evidence to evidence-based recommendations regarding nature contact is a thorny problem.\\n\\nFor their part, existing panel or cohort studies that have good measures of health and well-being rarely also carry detailed information on contact with natural environments because this topic is relatively new to public health and epidemiology. Moreover, data sets that can also capture the change in or development of natural environments over time are rare.\\n\\nEffect Size\\n\\nEvidence suggests that contact with nature has a small effect on health and well-being in comparison to structural characteristics such as income, employment, or education, and behavioral characteristics such as smoking. The signal-to-noise ratio in population-level studies is often small, and these studies need to be well designed and of sufficient power to identify any benefits. This does not mean that such studies are not worth doing, however; a small beneficial effect on a large number of people is a large contribution to population health ([111](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B111 \"\")).\\n\\nPRIORITIES FOR FURTHER RESEARCH\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nThroughout this review we have identified issues that warrant further research, and in the previous section we have identified methodological challenges that must be met. Here, we try to highlight some specific priorities for the field.\\n\\nFirst, we see a need to seek, create, and take opportunities for population-level experimental studies when they arise, within an understanding of their limits. Doing so will assist in demonstrating the degree to which nature-health relations have meaning for population health. We should also work to incorporate questions about contact with nature in ongoing longitudinal studies and ensure that high-quality data on change in type, quality, and availability of nature are maintained into the future and created retrospectively for the past. These additions would permit studies consistent with both cohort and life-course perspectives on relationships between nature and health.\\n\\nSecond, research on which types of nature are relatively effective for particular outcomes, and which qualities of those types are highly relevant, may be more fruitful when guided by theoretical ideas about why a particular type or quality of that type is likely to contribute to a particular pathway to health. Natural elements that are effective in improving air quality are not necessarily the same as those best suited to improving social cohesion in a neighborhood or to promoting psychological restoration.\\n\\nThird, with specific regard to the stress pathway, much work remains to be done to rigorously assess theoretical claims regarding the components of experience that sustain attention restoration and stress recovery. To what extent, for example, are beneficial effects dependent on gaining psychological distance from stressful demands versus engaging with positive aspects of the nature encountered? This work will be aided by, among other things, further development of measures of perceived restorative quality in environments, and experimentation that more directly addresses the interplay of stress recovery, attention restoration, and other possible processes through which adaptive resources become renewed (cf. [49](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49 \"\")).\\n\\nFourth, if we acknowledge the competing priorities for funding and investment in health and health care, some research on nature and health might gain from a health economics perspective. If contact with nature is cost-effective as a means to protect and improve population health, it should be resourced and prioritized in preference to other approaches. Arguably, doing so requires knowledge not only about the economic significance of the health benefits generated, but also about the “doses” of nature needed to generate those benefits at the lowest possible cost. Discussions of dose, however, can entail a variety of problems, such as trivialization of contact with nature through neglect of long-term consequences of particularly powerful forms of contact (e.g., life-changing wilderness experiences). The dose metaphor therefore must be handled with care ([137](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B137 \"\")). As with other health-related issues, economic analyses must extend beyond health impacts to account for other benefits. For instance, an urban park may offer not only health benefits, but also benefits such as stormwater management and enhanced property values.\\n\\nFinally, variety between population subgroups in access to, use of, and responses to nature remains persistently underexplored. Spatial, social, economic, racial, cultural, and demographic differences in relationships between nature and health seem highly probable. It may be that relationships between nature and health are implicated in exacerbating or mitigating health inequalities between subgroups, for example. This potential should be thoroughly explored.\\n\\nCONCLUDING COMMENTS\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nWe have provided for a general public health audience an overview of research on how contact with nature relates to health in urbanized societies. We have not covered this body of work comprehensively, but instead have focused on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations, such as the availability of urban parks, the amount of green space in and near residential areas, and the preservation of peri-urban natural areas. Given our public health orientation, we have focused on the conditions of everyday life for the greatest part of the populations of interest. We consequently have hardly touched on the extensive literatures on wilderness experience (for reviews, see 72, [139](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B139 \"\")) and contact with nature in the treatment and management of disability and illnesses such as depression ([47](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B47 \"\")) and breast cancer ([21](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B21 \"\"); see [2](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2 \"\") for a review).\\n\\nDespite such significant omissions, we trust readers will take away an appreciation not only of the diversity and complexity in forms of nature contact and potential benefits thereof, but also of the many challenges faced in characterizing those contacts and benefits. Taken together, the research reviewed does indicate that contact with nature can promote health. The evidence for some benefits, such as short-term restorative effects, is already quite strong. That said, nature contact should not be assumed always and automatically to be good for health; we have more to learn about for whom, when, how, and in which contexts it offers benefits.\\n\\nMuch also remains to be done to help those responsible for environmental policy, design, and management to make realistic assessments of what nature can and cannot do in their domain of activity. Part of this task involves explaining how health benefits might coincide (versus conflict with) other benefits, such as better stormwater management, species preservation, and carbon sequestration. If a particular form of nature contact shows small health benefits, interventions to promote it may still justify public investment if the health benefits combine with other benefits.\\n\\nIn closing, we recognize that many people speak of human-nature relations in moral/ethical and spiritual/religious terms with a view toward preservation of the natural environment. We respect such views. Our observations here regarding human health values should not be understood as the only or even the main bases for arguments regarding protection of habitats, species, and ecosystem integrity.\\n\\ndisclosure statement\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nH. Frumkin is a board member of the US Green Building Council and of the Children and Nature Network. R. Mitchell supervises a doctoral student funded by the UK Forestry Commission and has received research funding from the Forestry Commission in the recent past. The other authors are not aware of any affiliations, memberships, funding, or financial holdings that might be perceived as affecting the objectivity of this review.\\n\\nACKNOWLEDGMENTS\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nacknowledgments\\n\\nR. Mitchell was funded under a European Research Council grant (ERC-2010-StG Grant 263501).\\n\\nliterature cited\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\n001. AkbariH, KurnDM, BretzSE, HanfordJW. 1.\\u20021997.  Peak power and cooling energy savings of shade trees. Energy Build.25:139–48[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&author=H+Akbari&author=DM+Kurn&author=SE+Bretz&author=JW+Hanford&journal=Energy+Build.&volume=25&pages=139-48&publication_year=1997&)\\n002. AnnerstedtM, WährborgP. 2.\\u20022011.  Nature-assisted therapy: systematic review of controlled and observational studies. Scand. J. Public Health39:371–88[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&author=M+Annerstedt&author=P+W%C3%A4hrborg&journal=Scand.+J.+Public+Health&volume=39&pages=371-88&publication_year=2011&)\\n003. BartonJ, PrettyJ. 3.\\u20022010.  What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. Environ. Sci. Technol.44:3947–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&author=J+Barton&author=J+Pretty&journal=Environ.+Sci.+Technol.&volume=44&pages=3947-55&publication_year=2010&)\\n004. BaumFE, ZierschAM, ZhangG, OsborneK. 4.\\u20022009.  Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. Health Place15:925–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&author=FE+Baum&author=AM+Ziersch&author=G+Zhang&author=K+Osborne&journal=Health+Place&volume=15&pages=925-34&publication_year=2009&)\\n005. BaumanAE, ReisRS, SallisJF, WellsJC, LoosRJ, MartinBW. 5.\\u20022012.  Correlates of physical activity: Why are some people physically active and others not?. Lancet380:258–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&author=AE+Bauman&author=RS+Reis&author=JF+Sallis&author=JC+Wells&author=RJ+Loos&author=BW+Martin&journal=Lancet&volume=380&pages=258-71&publication_year=2012&)\\n006. BeckAM, MeyersNM. 6.\\u20021996.  Health enhancement and companion animal ownership. Annu. Rev. Public Health17:247–57[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&author=AM+Beck&author=NM+Meyers&journal=Annu.+Rev.+Public+Health&volume=17&pages=247-57&publication_year=1996&)\\n007. BeckettKP, Freer-SmithPH, TaylorG. 7.\\u20022000.  The capture of particulate pollution by trees at five contrasting urban sites. Arboric. J.24:209–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&author=KP+Beckett&author=PH+Freer-Smith&author=G+Taylor&journal=Arboric.+J.&volume=24&pages=209-30&publication_year=2000&)\\n008. Bedimo-RungAL, MowenAJ, CohenDA. 8.\\u20022005.  The significance of parks to physical activity and public health: a conceptual model. Am. J. Prev. Med.28:159–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&author=AL+Bedimo-Rung&author=AJ+Mowen&author=DA+Cohen&journal=Am.+J.+Prev.+Med.&volume=28&pages=159-68&publication_year=2005&)\\n009. BenjaminMT, WinerAM. 9.\\u20021998.  Estimating the ozone-forming potential of urban trees and shrubs. Atmos. Environ.32:53–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&author=MT+Benjamin&author=AM+Winer&journal=Atmos.+Environ.&volume=32&pages=53-68&publication_year=1998&)\\n010. BizeR, JohnsonJA, PlotnikoffRC. 10.\\u20022007.  Physical activity level and health-related quality of life in the general adult population: a systematic review. Prev. Med.45:401–15[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&author=R+Bize&author=JA+Johnson&author=RC+Plotnikoff&journal=Prev.+Med.&volume=45&pages=401-15&publication_year=2007&)\\n011. BowlerDE, Buyung-AliLM, KnightTM, PullinAS. 11.\\u20022010.  A systematic review of evidence for the added benefits to health of exposure to natural environments. BMC Public Health10:456[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&author=DE+Bowler&author=LM+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=BMC+Public+Health&volume=10&pages=456&publication_year=2010&)\\n012. BowlerDE, Buyung-AliL, KnightTM, PullinAS. 12.\\u20022010.  Urban greening to cool towns and cities: a systematic review of the empirical evidence. Landsc. Urban Plann.97:147–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&author=DE+Bowler&author=L+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=Landsc.+Urban+Plann.&volume=97&pages=147-55&publication_year=2010&)\\n013. BrackCL. 13.\\u20022002.  Pollution mitigation and carbon sequestration by an urban forest. Environ. Pollut.116:S195–200[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&author=CL+Brack&journal=Environ.+Pollut.&volume=116&pages=S195-200&publication_year=2002&)\\n014. BranasCC, CheneyRA, MacDonaldJM, TamVW, JacksonTD, Ten HaveTR. 14.\\u20022011.  A difference-in-differences analysis of health, safety, and greening vacant urban space. Am. J. Epidemiol.174:1296–306[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&author=CC+Branas&author=RA+Cheney&author=JM+MacDonald&author=VW+Tam&author=TD+Jackson&author=TR+Ten+Have&journal=Am.+J.+Epidemiol.&volume=174&pages=1296-306&publication_year=2011&)\\n015. BratmanGN, HamiltonJP, DailyGC. 15.\\u20022012.  The impacts of nature experience on human cognitive function and mental health. Ann. N.Y. Acad. Sci.1249:118–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&author=GN+Bratman&author=JP+Hamilton&author=GC+Daily&journal=Ann.+N.Y.+Acad.+Sci.&volume=1249&pages=118-36&publication_year=2012&)\\n016. BringslimarkT, HartigT, PatilGG. 16.\\u20022009.  The psychological benefits of indoor plants: a critical review of the experimental literature. J. Environ. Psychol.29:422–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&author=T+Bringslimark&author=T+Hartig&author=GG+Patil&journal=J.+Environ.+Psychol.&volume=29&pages=422-33&publication_year=2009&)\\n017. BroekhuizenK, de VriesSI, PierikFH. 17.\\u20022013. Healthy Aging in a Green Living Environment: A Systematic Review of the Literature. TNO rep. R10154 Leiden: TNO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&author=K+Broekhuizen&author=SI+de+Vries&author=FH+Pierik&publication_year=2013&)\\n018. BrooksGD, BushRK. 18.\\u20022009.  Allergens and other factors important in atopic disease. Patterson\\'s Allergic Diseases LC Grammer, PA Greenberger 73–103 Philadelphia: Lippincott, Williams & Wilkins, 7th ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&author=GD+Brooks&author=RK+Bush&journal=Patterson%27s+Allergic+Diseases&pages=73-103&publication_year=2009&)\\n019. CariñanosP, Casares-PorcelM. 19.\\u20022011.  Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. Landsc. Urban Plann.101:205–14[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&author=P+Cari%C3%B1anos&author=M+Casares-Porcel&journal=Landsc.+Urban+Plann.&volume=101&pages=205-14&publication_year=2011&)\\n020. ChameidesWL, LindsayRW, RichardsonJ, KiangCS. 20.\\u20021989.  The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. Science241:1473–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&author=WL+Chameides&author=RW+Lindsay&author=J+Richardson&author=CS+Kiang&journal=Science&volume=241&pages=1473-75&publication_year=1989&)\\n021. CimprichB. 21.\\u20021993.  Development of an intervention to restore attention in cancer patients. Cancer Nurs.16:83–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&author=B+Cimprich&journal=Cancer+Nurs.&volume=16&pages=83-92&publication_year=1993&)\\n022. ColferCJP, SheilD, KishiM. 22.\\u20022006. Forests and Human Health: Assessing the Evidence Bogor, Indones.: Cent. Int. For. Res [http://www.cifor.org/publications/pdf\\\\_files/OccPapers/OP-45.pdf](http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&author=CJP+Colfer&author=D+Sheil&author=M+Kishi&publication_year=2006&)\\n023. DayLL. 23.\\u20022000.  Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. J. Plan Educ. Res.19:265–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&author=LL+Day&journal=J.+Plan+Educ.+Res.&volume=19&pages=265-75&publication_year=2000&)\\n024. de VriesS, ClaßenT, Eigenheer-HugS-M, KorpelaK, MaasJ. 24.\\u2002 et al.2011.  Contributions of natural environments to physical activity.  See Ref. 98 205–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&author=S+de+Vries&author=T+Cla%C3%9Fen&author=S-M+Eigenheer-Hug&author=K+Korpela&author=J+Maas&pages=205-43&publication_year=2011&)\\n025. de VriesS, van DillenSME, GroenewegenPP, SpreeuwenbergP. 25.\\u20022013.  Streetscape greenery and health: stress, social cohesion and physical activity as mediators. Soc. Sci. Med.94:26–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&author=S+de+Vries&author=SME+van+Dillen&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Soc.+Sci.+Med.&volume=94&pages=26-33&publication_year=2013&)\\n026. de VriesS, VerheijRA, GroenewegenPP, SpreeuwenbergP. 26.\\u20022003.  Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. Environ. Plann. A35:1717–31[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&author=S+de+Vries&author=RA+Verheij&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Environ.+Plann.+A&volume=35&pages=1717-31&publication_year=2003&)\\n027. DellaValleCT, TricheEW, LeadererBP, BellML. 27.\\u20022012.  Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. Epidemiology23:55–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&author=CT+DellaValle&author=EW+Triche&author=BP+Leaderer&author=ML+Bell&journal=Epidemiology&volume=23&pages=55-63&publication_year=2012&)\\n028. Den HertogF, BronkhorstM, MoermanM, Van WilgenburgR. 28.\\u20022006. De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit \\\\[The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity\\\\]. Amsterdam: EMGO Inst.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&author=F+Den+Hertog&author=M+Bronkhorst&author=M+Moerman&author=R+Van+Wilgenburg&publication_year=2006&)\\n029. DingD, SallisJF, KerrJ, LeeS, RosenbergDE. 29.\\u20022011.  Neighborhood environment and physical activity among youth: a review. Am. J. Prev. Med.41:442–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&author=D+Ding&author=JF+Sallis&author=J+Kerr&author=S+Lee&author=DE+Rosenberg&journal=Am.+J.+Prev.+Med.&volume=41&pages=442-55&publication_year=2011&)\\n030. DommJ, DrewR, GreeneA, RipleyE, SmardonR, TordesillasJ. 30.\\u20022008.  Recommended urban forest mixtures to optimize selected environmental benefits. EnviroNews: Int. Soc. Environ. Bot.14:7–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&author=J+Domm&author=R+Drew&author=A+Greene&author=E+Ripley&author=R+Smardon&author=J+Tordesillas&journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&volume=14&pages=7-10&publication_year=2008&)\\n031. DonovanGH, PrestemonJP. 31.\\u20022012.  The effect of trees on crime in Portland, Oregon. Environ. Behav.44:3–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&author=GH+Donovan&author=JP+Prestemon&journal=Environ.+Behav.&volume=44&pages=3-30&publication_year=2012&)\\n032. EidJ, OvermanHG, PugaD, TurnerMA. 32.\\u20022008.  Fat city: questioning the relationship between urban sprawl and obesity. J. Urban Econ.63:385–404[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&author=J+Eid&author=HG+Overman&author=D+Puga&author=MA+Turner&journal=J.+Urban+Econ.&volume=63&pages=385-404&publication_year=2008&)\\n033. EngelGL. 33.\\u20021977.  The need for a new medical model: a challenge for biomedicine. Science196:129–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&author=GL+Engel&journal=Science&volume=196&pages=129-36&publication_year=1977&)\\n034. EscobedoFJ, NowakDJ. 34.\\u20022009.  Spatial heterogeneity and air pollution removal by an urban forest. Landsc. Urban Plann.90:102–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&author=FJ+Escobedo&author=DJ+Nowak&journal=Landsc.+Urban+Plann.&volume=90&pages=102-10&publication_year=2009&)\\n035. FerdinandAO, SenB, RahurkarS, EnglerS, MenachemiN. 35.\\u20022012.  The relationship between built environments and physical activity: a systematic review. Am. J. Public Health102:e7–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&author=AO+Ferdinand&author=B+Sen&author=S+Rahurkar&author=S+Engler&author=N+Menachemi&journal=Am.+J.+Public+Health&volume=102&pages=e7-13&publication_year=2012&)\\n036. ForrestR, KearnsA. 36.\\u20022001.  Social cohesion, social capital and the neighbourhood. Urban Stud.38:2125–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&author=R+Forrest&author=A+Kearns&journal=Urban+Stud.&volume=38&pages=2125-43&publication_year=2001&)\\n037. FowlerD. 37.\\u20022002.  Pollutant deposition and uptake by vegetation. Air Pollution and Plant Life JNB Bell, M Treshow 43–67 New York: Wiley, 2nd ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&author=D+Fowler&journal=Air+Pollution+and+Plant+Life&pages=43-67&publication_year=2002&)\\n038. FrancisJ, Giles-CortiB, WoodL, KnuimanM. 38.\\u20022012.  Creating sense of community: the role of public space. J. Environ. Psychol.32:401–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&author=J+Francis&author=B+Giles-Corti&author=L+Wood&author=M+Knuiman&journal=J.+Environ.+Psychol.&volume=32&pages=401-9&publication_year=2012&)\\n039. FrancisJ, WoodLJ, KnuimanM, Giles-CortiB. 39.\\u20022012.  Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. Soc. Sci. Med.74:1570–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&author=J+Francis&author=LJ+Wood&author=M+Knuiman&author=B+Giles-Corti&journal=Soc.+Sci.+Med.&volume=74&pages=1570-77&publication_year=2012&)\\n040. FraserSDS, LockK. 40.\\u20022011.  Cycling for transport and public health: a systematic review of the effect of the environment on cycling. Eur. J. Public Health21:738–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&author=SDS+Fraser&author=K+Lock&journal=Eur.+J.+Public+Health&volume=21&pages=738-43&publication_year=2011&)\\n041. FrostSS, GoinsRT, HunterRH, HookerSP, BryantLL. 41.\\u2002 et al.2010.  Effects of the built environment on physical activity of adults living in rural settings. Am. J. Health Promot.24:267–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&author=SS+Frost&author=RT+Goins&author=RH+Hunter&author=SP+Hooker&author=LL+Bryant&journal=Am.+J.+Health+Promot.&volume=24&pages=267-83&publication_year=2010&)\\n042. FrumkinH. 42.\\u20022001.  Beyond toxicity: human health and the natural environment. Am. J. Prev. Med.20:234–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=20&pages=234-40&publication_year=2001&)\\n043. FrumkinH. 43.\\u20022013.  The evidence of nature and the nature of evidence. Am. J. Prev. Med.44:196–97[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=44&pages=196-97&publication_year=2013&)\\n044. GaleaS, VlahovD. 44.\\u20022005.  Urban health: evidence, challenges, and directions. Annu. Rev. Public Health26:341–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&author=S+Galea&author=D+Vlahov&journal=Annu.+Rev.+Public+Health&volume=26&pages=341-65&publication_year=2005&)\\n045. GaterslebenB, AndrewsM. 45.\\u20022013.  When walking in nature is not restorative—the role of prospect and refuge. Health Place20:91–101[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&author=B+Gatersleben&author=M+Andrews&journal=Health+Place&volume=20&pages=91-101&publication_year=2013&)\\n046. Giles-CortiB, BroomhallMH, KnuimanM, CollinsC, DouglasK. 46.\\u2002 et al.2005.  Increasing walking: How important is distance to, attractiveness, and size of public open space?. Am. J. Prev. Med.28:169–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&author=B+Giles-Corti&author=MH+Broomhall&author=M+Knuiman&author=C+Collins&author=K+Douglas&journal=Am.+J.+Prev.+Med.&volume=28&pages=169-76&publication_year=2005&)\\n047. GonzalezMT, HartigT, PatilGG, MartinsenEW, KirkevoldM. 47.\\u20022010.  Therapeutic horticulture in clinical depression: a prospective study of active components. J. Adv. Nurs.66:2002–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&author=MT+Gonzalez&author=T+Hartig&author=GG+Patil&author=EW+Martinsen&author=M+Kirkevold&journal=J.+Adv.+Nurs.&volume=66&pages=2002-13&publication_year=2010&)\\n048. HartigT. 48.\\u20021993.  Nature experience in transactional perspective. Landsc. Urban Plann.25:17–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&author=T+Hartig&journal=Landsc.+Urban+Plann.&volume=25&pages=17-36&publication_year=1993&)\\n049. HartigT, EvansGW, JamnerLD, DavisDS, GärlingT. 49.\\u20022003.  Tracking restoration in natural and urban field settings. J. Environ. Psychol.23:109–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&author=T+Hartig&author=GW+Evans&author=LD+Jamner&author=DS+Davis&author=T+G%C3%A4rling&journal=J.+Environ.+Psychol.&volume=23&pages=109-23&publication_year=2003&)\\n050. HartigT, FranssonU. 50.\\u20022009.  Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. Environ. Plann. A41:82–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&author=T+Hartig&author=U+Fransson&journal=Environ.+Plann.+A&volume=41&pages=82-96&publication_year=2009&)\\n051. HartigT, JohanssonG, KylinC. 51.\\u20022003.  Residence in the social ecology of stress and restoration. J. Soc. Iss.59:611–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&author=T+Hartig&author=G+Johansson&author=C+Kylin&journal=J.+Soc.+Iss.&volume=59&pages=611-36&publication_year=2003&)\\n052. HartigT, MangM, EvansGW. 52.\\u20021991.  Restorative effects of natural environment experiences. Environ. Behav.23:3–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&author=T+Hartig&author=M+Mang&author=GW+Evans&journal=Environ.+Behav.&volume=23&pages=3-26&publication_year=1991&)\\n053. HartigT, van den BergAE, HagerhallCM, TomalakM, BauerN. 53.\\u2002 et al.2011.  Health benefits of nature experience: psychological, social and cultural processes.  See Ref. 98 127–68\\n054. 54.\\u2002Health Counc. Neth2004. Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being. The Hague: Health Counc. Neth., RMNO [http://www.gezondheidsraad.nl/sites/default/files/Nature\\\\_and\\\\_health.pdf](http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&publication_year=2004&)\\n055. HeinenE, van WeeB, MaatK. 55.\\u20022010.  Commuting by bicycle: an overview of the literature. Transp. Rev.30:59–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&author=E+Heinen&author=B+van+Wee&author=K+Maat&journal=Transp.+Rev.&volume=30&pages=59-96&publication_year=2010&)\\n056. HillsdonM, PanterJ, FosterC, JonesA. 56.\\u20022006.  The relationship between access and quality of urban green space with population physical activity. Public Health120:1127–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&author=M+Hillsdon&author=J+Panter&author=C+Foster&author=A+Jones&journal=Public+Health&volume=120&pages=1127-32&publication_year=2006&)\\n057. Holt-LunstadJ, SmithTB, LaytonJB. 57.\\u20022010.  Social relationships and mortality risk: a meta-analytic review. PLoS Med.7:e1000316[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&author=J+Holt-Lunstad&author=TB+Smith&author=JB+Layton&journal=PLoS+Med.&volume=7&pages=e1000316&publication_year=2010&)\\n058. HomeR, HunzikerM, BauerN. 58.\\u20022012.  Psychosocial outcomes as motivations for visiting nearby urban green spaces. Leis. Sci.34:350–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&author=R+Home&author=M+Hunziker&author=N+Bauer&journal=Leis.+Sci.&volume=34&pages=350-65&publication_year=2012&)\\n059. IslamMN, RahmanK-S, BaharMM, HabibMA, AndoK, HattoriN. 59.\\u20022012.  Pollution attenuation by roadside greenbelt in and around urban areas. Urban For. Urban Green.11:460–64[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&author=MN+Islam&author=K-S+Rahman&author=MM+Bahar&author=MA+Habib&author=K+Ando&author=N+Hattori&journal=Urban+For.+Urban+Green.&volume=11&pages=460-64&publication_year=2012&)\\n060. JahnckeH, HyggeS, HalinN, GreenAM, DimbergK. 60.\\u20022011.  Open-plan office noise: cognitive performance and restoration. J. Environ. Psychol.31:373–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&author=H+Jahncke&author=S+Hygge&author=N+Halin&author=AM+Green&author=K+Dimberg&journal=J.+Environ.+Psychol.&volume=31&pages=373-82&publication_year=2011&)\\n061. JanssenI, LeBlancAG. 61.\\u20022010.  Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. Int. J. Behav. Nutr. Phys. Act.7:40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&author=I+Janssen&author=AG+LeBlanc&journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&volume=7&pages=40&publication_year=2010&)\\n062. JanssonM, ForsH, LindgrenT, WiströmB. 62.\\u20022013.  Perceived personal safety in relation to urban woodland vegetation—a review. Urban For. Urban Green.12:127–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&author=M+Jansson&author=H+Fors&author=T+Lindgren&author=B+Wistr%C3%B6m&journal=Urban+For.+Urban+Green.&volume=12&pages=127-33&publication_year=2013&)\\n063. JimCY, ChenWY. 63.\\u20022008.  Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). J. Environ. Manag.88:665–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&author=CY+Jim&author=WY+Chen&journal=J.+Environ.+Manag.&volume=88&pages=665-76&publication_year=2008&)\\n064. JohanssonM, HartigT, StaatsH. 64.\\u20022011.  Psychological benefits of walking: moderation by company and outdoor environment. Appl. Psychol. Health Well-Being3:261–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&author=M+Johansson&author=T+Hartig&author=H+Staats&journal=Appl.+Psychol.+Health+Well-Being&volume=3&pages=261-80&publication_year=2011&)\\n065. KaczynskiAT, HendersonKA. 65.\\u20022007.  Environmental correlates of physical activity: a review of evidence about parks and recreation. Leis. Sci.29:315–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&author=AT+Kaczynski&author=KA+Henderson&journal=Leis.+Sci.&volume=29&pages=315-54&publication_year=2007&)\\n066. KaplanR. 66.\\u20021993.  The role of nature in the context of the workplace. Landsc. Urban Plann.26:193–201[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&author=R+Kaplan&journal=Landsc.+Urban+Plann.&volume=26&pages=193-201&publication_year=1993&)\\n067. KaplanR, KaplanS. 67.\\u20021989. The Experience of Nature: A Psychological Perspective New York: Cambridge Univ. Press\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&author=R+Kaplan&author=S+Kaplan&publication_year=1989&)\\n068. KaplanS. 68.\\u20021995.  The restorative benefits of nature: toward an integrative framework. J. Environ. Psychol.15:169–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&author=S+Kaplan&journal=J.+Environ.+Psychol.&volume=15&pages=169-82&publication_year=1995&)\\n069. KaplanS. 69.\\u20022001.  Meditation, restoration, and the management of mental fatigue. Environ. Behav.33:480–506[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&author=S+Kaplan&journal=Environ.+Behav.&volume=33&pages=480-506&publication_year=2001&)\\n070. KarlT, HarleyP, EmmonsL, ThorntonB, GuentherA. 70.\\u2002 et al.2010.  Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. Science330:816–19[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&author=T+Karl&author=P+Harley&author=L+Emmons&author=B+Thornton&author=A+Guenther&journal=Science&volume=330&pages=816-19&publication_year=2010&)\\n071. KaźmierczakA. 71.\\u20022013.  The contribution of local parks to neighbourhood social ties. Landsc. Urban Plann.109:31–44[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&author=A+Ka%C5%BAmierczak&journal=Landsc.+Urban+Plann.&volume=109&pages=31-44&publication_year=2013&)\\n072. KnopfRC. 72.\\u20021987.  Human behavior, cognition, and affect in the natural environment. Handbook of Environmental Psychology D Stokols, I Altman 783–825 New York: Wiley\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&author=RC+Knopf&journal=Handbook+of+Environmental+Psychology&pages=783-825&publication_year=1987&)\\n073. KorpelaK, HartigT. 73.\\u20021996.  Restorative qualities of favorite places. J. Environ. Psychol.16:221–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&author=K+Korpela&author=T+Hartig&journal=J.+Environ.+Psychol.&volume=16&pages=221-33&publication_year=1996&)\\n074. KrollJH, SeinfeldJH. 74.\\u20022008.  Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. Atmos. Environ.42:3593–624[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&author=JH+Kroll&author=JH+Seinfeld&journal=Atmos.+Environ.&volume=42&pages=3593-624&publication_year=2008&)\\n075. KuoFE, SullivanWC. 75.\\u20022001.  Aggression and violence in the inner city: effects of environment via mental fatigue. Environ. Behav.33:543–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=543-71&publication_year=2001&)\\n076. KuoFE, SullivanWC. 76.\\u20022001.  Environment and crime in the inner city: Does vegetation reduce crime?. Environ. Behav.33:343–67[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=343-67&publication_year=2001&)\\n077. KuoFE, SullivanWC, ColeyRL, BrunsonL. 77.\\u20021998.  Fertile ground for community: inner-city neighborhood common spaces. Am. J. Community Psychol.26:823–51[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&author=FE+Kuo&author=WC+Sullivan&author=RL+Coley&author=L+Brunson&journal=Am.+J.+Community+Psychol.&volume=26&pages=823-51&publication_year=1998&)\\n078. LachowyczK, JonesAP. 78.\\u20022011.  Greenspace and obesity: a systematic review of the evidence. Obes. Rev.12:e183–89[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&author=K+Lachowycz&author=AP+Jones&journal=Obes.+Rev.&volume=12&pages=e183-89&publication_year=2011&)\\n079. LachowyczK, JonesAP. 79.\\u20022013.  Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. Landsc. Urban Plann.118:62–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&author=K+Lachowycz&author=AP+Jones&journal=Landsc.+Urban+Plann.&volume=118&pages=62-69&publication_year=2013&)\\n080. LindheimR, SymeSL. 80.\\u20021983.  Environments, people, and health. Annu. Rev. Public Health4:335–59[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&author=R+Lindheim&author=SL+Syme&journal=Annu.+Rev.+Public+Health&volume=4&pages=335-59&publication_year=1983&)\\n081. LiuY-J, MuY-J, ZhuY-G, DingH, ArensNC. 81.\\u20022007.  Which ornamental plant species effectively remove benzene from indoor air?. Atmos. Environ.41:650–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&author=Y-J+Liu&author=Y-J+Mu&author=Y-G+Zhu&author=H+Ding&author=NC+Arens&journal=Atmos.+Environ.&volume=41&pages=650-54&publication_year=2007&)\\n082. LloydGER, ChadwickJ, MannWN. 82.\\u20021978. Hippocratic Writings Harmondsworth: Penguin\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&author=GER+Lloyd&author=J+Chadwick&author=WN+Mann&publication_year=1978&)\\n083. LovasiGS, O\\'Neil-DunneJP, LuJW, SheehanD, PerzanowskiMS. 83.\\u2002 et al.2013.  Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. Environ. Health Perspect.121:494–500 00e1–6\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&author=GS+Lovasi&author=JP+O%27Neil-Dunne&author=JW+Lu&author=D+Sheehan&author=MS+Perzanowski&journal=Environ.+Health+Perspect.&volume=121&pages=494-500&publication_year=2013&)\\n084. MaasJ, SpreeuwenbergP, van Winsum-WestraM, VerheijRA, de VriesS, GroenewegenPP. 84.\\u20022009.  Is green space in the living environment associated with people\\'s feelings of social safety?. Environ. Plann. A41:1763–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&author=J+Maas&author=P+Spreeuwenberg&author=M+van+Winsum-Westra&author=RA+Verheij&author=S+de+Vries&author=PP+Groenewegen&journal=Environ.+Plann.+A&volume=41&pages=1763-77&publication_year=2009&)\\n085. MaasJ, van DillenSM, VerheijRA, GroenewegenPP. 85.\\u20022009.  Social contacts as a possible mechanism behind the relation between green space and health. Health Place15:586–95[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&author=J+Maas&author=SM+van+Dillen&author=RA+Verheij&author=PP+Groenewegen&journal=Health+Place&volume=15&pages=586-95&publication_year=2009&)\\n086. MaasJ, VerheijRA, de VriesS, SpreeuwenbergP, SchellevisFG, GroenewegenPP. 86.\\u20022009.  Morbidity is related to a green living environment. J. Epidemiol. Community Health63:967–73[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&author=J+Maas&author=RA+Verheij&author=S+de+Vries&author=P+Spreeuwenberg&author=FG+Schellevis&author=PP+Groenewegen&journal=J.+Epidemiol.+Community+Health&volume=63&pages=967-73&publication_year=2009&)\\n087. MaasJ, VerheijRA, GroenewegenPP, de VriesS, SpreeuwenbergP. 87.\\u20022006.  Green space, urbanity, and health: How strong is the relation?. J. Epidemiol. Community Health60:587–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&author=S+de+Vries&author=P+Spreeuwenberg&journal=J.+Epidemiol.+Community+Health&volume=60&pages=587-92&publication_year=2006&)\\n088. MaasJ, VerheijRA, SpreeuwenbergP, GroenewegenPP. 88.\\u20022008.  Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. BMC Public Health8:206[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&author=J+Maas&author=RA+Verheij&author=P+Spreeuwenberg&author=PP+Groenewegen&journal=BMC+Public+Health&volume=8&pages=206&publication_year=2008&)\\n089. MallerC, TownsendM, St LegerL, Henderson-WilsonC, PryorA. 89.\\u2002 et al.2008. Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context Melbourne, Aust.: Deakin Univ.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&author=C+Maller&author=M+Townsend&author=L+St+Leger&author=C+Henderson-Wilson&author=A+Pryor&publication_year=2008&)\\n090. McCormackGR, RockM, TooheyAM, HignellD. 90.\\u20022010.  Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. Health Place16:712–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&author=GR+McCormack&author=M+Rock&author=AM+Toohey&author=D+Hignell&journal=Health+Place&volume=16&pages=712-26&publication_year=2010&)\\n091. McCurdyLE, WinterbottomKE, MehtaSS, RobertsJR. 91.\\u20022010.  Using nature and outdoor activity to improve children\\'s health. Curr. Probl. Pediatr. Adolesc. Health Care40:102–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&author=LE+McCurdy&author=KE+Winterbottom&author=SS+Mehta&author=JR+Roberts&journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&volume=40&pages=102-17&publication_year=2010&)\\n092. MitchellR. 92.\\u20022013.  Is physical activity in natural environments better for mental health than physical activity in other environments?. Soc. Sci. Med.91:130–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=91&pages=130-34&publication_year=2013&)\\n093. MitchellR, PophamF. 93.\\u20022007.  Greenspace, urbanity and health: relationships in England. J. Epidemiol. Community Health61:681–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&author=R+Mitchell&author=F+Popham&journal=J.+Epidemiol.+Community+Health&volume=61&pages=681-83&publication_year=2007&)\\n094. MitchellR, PophamF. 94.\\u20022008.  Effect of exposure to natural environment on health inequalities: an observational population study. Lancet372:1655–60[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&author=R+Mitchell&author=F+Popham&journal=Lancet&volume=372&pages=1655-60&publication_year=2008&)\\n095. MitrioneS. 95.\\u20022008.  Therapeutic responses to natural environments: using gardens to improve health care. Minn. Med.91:31–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&author=S+Mitrione&journal=Minn.+Med.&volume=91&pages=31-34&publication_year=2008&)\\n096. MuñozS-A. 96.\\u20022009. Children in the Outdoors: A Literature Review Forres, Scotl.: Sustain. Dev. Res. Cent.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&author=S-A+Mu%C3%B1oz&publication_year=2009&)\\n097. NieminenT, MartelinT, KoskinenS, AroH, AlanenE, HyyppäMT. 97.\\u20022010.  Social capital as a determinant of self-rated health and psychological well-being. Int. J. Public Health55:531–42[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&author=T+Nieminen&author=T+Martelin&author=S+Koskinen&author=H+Aro&author=E+Alanen&author=MT+Hyypp%C3%A4&journal=Int.+J.+Public+Health&volume=55&pages=531-42&publication_year=2010&)\\n098. NilssonK, SangsterM, GallisC, HartigT, de VriesS. 98.\\u2002 et al.2011. Forests, Trees and Human Health Dordrecht: Springer\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&author=K+Nilsson&author=M+Sangster&author=C+Gallis&author=T+Hartig&author=S+de+Vries&publication_year=2011&)\\n099. NilssonME, BerglundB. 99.\\u20022006.  Soundscape quality in suburban green areas and city parks. Acta Acustica United Acustica92:903–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&author=ME+Nilsson&author=B+Berglund&journal=Acta+Acustica+United+Acustica&volume=92&pages=903-11&publication_year=2006&)\\n100. NowakDJ, CraneDE, StevensJC. 100.\\u20022006.  Air pollution removal by urban trees and shrubs in the United States. Urban For. Urban Green.4:115–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&author=DJ+Nowak&author=DE+Crane&author=JC+Stevens&journal=Urban+For.+Urban+Green.&volume=4&pages=115-23&publication_year=2006&)\\n101. OlmstedFL. 101.\\u20021970 (1870). Public Parks and the Enlargement of Towns New York: Arno (Cambridge, MA: Riverside)\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&author=FL+Olmsted&)\\n102. OrwellRL, WoodRA, BurchettMD, TarranJ, TorpyF. 102.\\u20022006.  The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. Water Air Soil Poll.177:59–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&author=RL+Orwell&author=RA+Wood&author=MD+Burchett&author=J+Tarran&author=F+Torpy&journal=Water+Air+Soil+Poll.&volume=177&pages=59-80&publication_year=2006&)\\n103. PaolettiE, BardelliT, GiovanniniG, PecchioliL. 103.\\u20022011.  Air quality impact of an urban park over time. Procedia Environ. Sci.4:10–16[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&author=E+Paoletti&author=T+Bardelli&author=G+Giovannini&author=L+Pecchioli&journal=Procedia+Environ.+Sci.&volume=4&pages=10-16&publication_year=2011&)\\n104. PowellKE, PaluchAE, BlairSN. 104.\\u20022011.  Physical activity for health: What Kind? How much? How Intense? On Top of What?. Annu. Rev. Public Health32:349–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&author=KE+Powell&author=AE+Paluch&author=SN+Blair&journal=Annu.+Rev.+Public+Health&volume=32&pages=349-65&publication_year=2011&)\\n105. PrettyJ, PeacockJ, SellensM, GriffinM. 105.\\u20022005.  The mental and physical health outcomes of green exercise. Int. J. Environ. Health Res.15:319–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&author=J+Pretty&author=J+Peacock&author=M+Sellens&author=M+Griffin&journal=Int.+J.+Environ.+Health+Res.&volume=15&pages=319-37&publication_year=2005&)\\n106. ProctorJD. 106.\\u20021998.  The social construction of nature: relativist accusations, pragmatist and critical realist responses. Ann. Assoc. Am. Geogr.88:352–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&author=JD+Proctor&journal=Ann.+Assoc.+Am.+Geogr.&volume=88&pages=352-76&publication_year=1998&)\\n107. RichardsonEA, MitchellR. 107.\\u20022010.  Gender differences in relationships between urban green space and health in the United Kingdom. Soc. Sci. Med.71:568–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&author=EA+Richardson&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=71&pages=568-75&publication_year=2010&)\\n108. RichardsonEA, MitchellR, HartigT, de VriesS, Astell-BurtT, FrumkinH. 108.\\u20022012.  Green cities and health: a question of scale?. J. Epidemiol. Community Health66:160–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&author=EA+Richardson&author=R+Mitchell&author=T+Hartig&author=S+de+Vries&author=T+Astell-Burt&author=H+Frumkin&journal=J.+Epidemiol.+Community+Health&volume=66&pages=160-65&publication_year=2012&)\\n109. RichardsonEA, PearceJ, MitchellR, KinghamS. 109.\\u20022013.  Role of physical activity in the relationship between urban green space and health. Public Health127:318–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&author=EA+Richardson&author=J+Pearce&author=R+Mitchell&author=S+Kingham&journal=Public+Health&volume=127&pages=318-24&publication_year=2013&)\\n110. RiosR, AikenLS, ZautraAJ. 110.\\u20022012.  Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. Ann. Behav. Med.43:50–61[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&author=R+Rios&author=LS+Aiken&author=AJ+Zautra&journal=Ann.+Behav.+Med.&volume=43&pages=50-61&publication_year=2012&)\\n111. RoseG. 111.\\u20022001.  Sick individuals and sick populations. Int. J. Epidemiol.30:427–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&author=G+Rose&journal=Int.+J.+Epidemiol.&volume=30&pages=427-32&publication_year=2001&)\\n112. SarteletKN, CouvidatF, SeigneurC, RoustanY. 112.\\u20022012.  Impact of biogenic emissions on air quality over Europe and North America. Atmos. Environ.53:131–41[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&author=KN+Sartelet&author=F+Couvidat&author=C+Seigneur&author=Y+Roustan&journal=Atmos.+Environ.&volume=53&pages=131-41&publication_year=2012&)\\n113. SetäläH, ViippolaV, RantalainenAL, PennanenA, Yli-PelkonenV. 113.\\u20022012.  Does urban vegetation mitigate air pollution in northern conditions?. Environ. Pollut.183:104–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&author=H+Set%C3%A4l%C3%A4&author=V+Viippola&author=AL+Rantalainen&author=A+Pennanen&author=V+Yli-Pelkonen&journal=Environ.+Pollut.&volume=183&pages=104-12&publication_year=2012&)\\n114. SimpsonJR, McPhersonEG. 114.\\u20021998.  Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. Atmos. Environ.32:69–74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&author=JR+Simpson&author=EG+McPherson&journal=Atmos.+Environ.&volume=32&pages=69-74&publication_year=1998&)\\n115. SmardonRC. 115.\\u20021988.  Perception and aesthetics of the urban environment: review of the role of vegetation. Landsc. Urban Plann.15:85–106[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&author=RC+Smardon&journal=Landsc.+Urban+Plann.&volume=15&pages=85-106&publication_year=1988&)\\n116. StaatsH, Van GemerdenE, HartigT. 116.\\u20022010.  Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. Leis. Sci.32:401–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&author=H+Staats&author=E+Van+Gemerden&author=T+Hartig&journal=Leis.+Sci.&volume=32&pages=401-17&publication_year=2010&)\\n117. StigsdotterUK, EkholmO, SchipperijnJ, ToftagerM, Kamper-JørgensenF, RandrupTB. 117.\\u20022010.  Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. Scand. J. Public Health38:411–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&author=UK+Stigsdotter&author=O+Ekholm&author=J+Schipperijn&author=M+Toftager&author=F+Kamper-J%C3%B8rgensen&author=TB+Randrup&journal=Scand.+J.+Public+Health&volume=38&pages=411-17&publication_year=2010&)\\n118. SugiyamaT, LeslieE, Giles-CortiB, OwenN. 118.\\u20022008.  Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. J. Epidemiol. Community Health62:e9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&author=T+Sugiyama&author=E+Leslie&author=B+Giles-Corti&author=N+Owen&journal=J.+Epidemiol.+Community+Health&volume=62&pages=e9&publication_year=2008&)\\n119. TakanoT, NakamuraK, WatanabeM. 119.\\u20022002.  Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. J. Epidemiol. Community Health56:913–18[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&author=T+Takano&author=K+Nakamura&author=M+Watanabe&journal=J.+Epidemiol.+Community+Health&volume=56&pages=913-18&publication_year=2002&)\\n120. TallisM, TaylorG, SinnettD, Freer-SmithP. 120.\\u20022011.  Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. Landsc. Urban Plann.103:129–38[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&author=M+Tallis&author=G+Taylor&author=D+Sinnett&author=P+Freer-Smith&journal=Landsc.+Urban+Plann.&volume=103&pages=129-38&publication_year=2011&)\\n121. TaylorAF, KuoFE. 121.\\u20022009.  Children with attention deficits concentrate better after walk in the park. J. Atten. Disord.12:402–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&author=AF+Taylor&author=FE+Kuo&journal=J.+Atten.+Disord.&volume=12&pages=402-9&publication_year=2009&)\\n122. TaylorAF, KuoFE, SullivanWC. 122.\\u20022002.  Views of nature and self-discipline: evidence from inner city children. J. Environ. Psychol.22:49–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&author=AF+Taylor&author=FE+Kuo&author=WC+Sullivan&journal=J.+Environ.+Psychol.&volume=22&pages=49-63&publication_year=2002&)\\n123. Thompson CoonJ, BoddyK, SteinK, WhearR, BartonJ, DepledgeMH. 123.\\u20022011.  Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. Environ. Sci. Technol.45:1761–72[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&author=J+Thompson+Coon&author=K+Boddy&author=K+Stein&author=R+Whear&author=J+Barton&author=MH+Depledge&journal=Environ.+Sci.+Technol.&volume=45&pages=1761-72&publication_year=2011&)\\n124. TsunetsuguY, ParkB, MiyazakiY. 124.\\u20022010.  Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. Environ. Health Prevent. Med.15:27–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&author=Y+Tsunetsugu&author=B+Park&author=Y+Miyazaki&journal=Environ.+Health+Prevent.+Med.&volume=15&pages=27-37&publication_year=2010&)\\n125. UlrichRS. 125.\\u20021979.  Visual landscapes and psychological well-being. Landsc. Res.4:17–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&author=RS+Ulrich&journal=Landsc.+Res.&volume=4&pages=17-23&publication_year=1979&)\\n126. UlrichRS. 126.\\u20021983.  Aesthetic and affective response to natural environment. Human Behaviour and Environment: Advances in Theory and Research. Volume\\n     6Behaviour and the Natural Environment, ed. I\\n     Altman, JF Wohlwill 85–125 New York: Plenum\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&author=RS+Ulrich&journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&pages=85-125&publication_year=1983&)\\n127. UlrichRS, SimonsRF, LositoBD, FioritoE, MilesMA, ZelsonM. 127.\\u20021991.  Stress recovery during exposure to natural and urban environments. J. Environ. Psychol.11:201–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&author=RS+Ulrich&author=RF+Simons&author=BD+Losito&author=E+Fiorito&author=MA+Miles&author=M+Zelson&journal=J.+Environ.+Psychol.&volume=11&pages=201-30&publication_year=1991&)\\n128. Van CauwenbergJ, De BourdeaudhuijI, De MeesterF, Van DyckD, SalmonJ. 128.\\u2002 et al.2011.  Relationship between the physical environment and physical activity in older adults: a systematic review. Health Place17:458–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&author=J+Van+Cauwenberg&author=I+De+Bourdeaudhuij&author=F+De+Meester&author=D+Van+Dyck&author=J+Salmon&journal=Health+Place&volume=17&pages=458-69&publication_year=2011&)\\n129. Van den BergAE, CustersMHG. 129.\\u20022011.  Gardening promotes neuroendocrine and affective restoration from stress. J. Health Psychol.16:3–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&author=AE+Van+den+Berg&author=MHG+Custers&journal=J.+Health+Psychol.&volume=16&pages=3-11&publication_year=2011&)\\n130. Van den BergAE, MaasJ, VerheijRA, GroenewegenPP. 130.\\u20022010.  Green space as a buffer between stressful life events and health. Soc. Sci. Med.70:1203–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&author=AE+Van+den+Berg&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&journal=Soc.+Sci.+Med.&volume=70&pages=1203-10&publication_year=2010&)\\n131. Van den BergAE, van Winsum-WestraM, de VriesS, van DillenSME. 131.\\u20022010.  Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. Environ. Health9:74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&author=AE+Van+den+Berg&author=M+van+Winsum-Westra&author=S+de+Vries&author=SME+van+Dillen&journal=Environ.+Health&volume=9&pages=74&publication_year=2010&)\\n132. Van HerzeleA, BellS, HartigT, PodestaMTC, van ZonR. 132.\\u20022011.  Health benefits of nature experience: the challenge of linking practice and research.  See Ref. 98 169–82\\n133. Ward ThompsonC, AspinallP, MontarzinoA. 133.\\u20022008.  The childhood factor: adult visits to green places and the significance of childhood experience. Environ. Behav.40:111–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&author=C+Ward+Thompson&author=P+Aspinall&author=A+Montarzino&journal=Environ.+Behav.&volume=40&pages=111-43&publication_year=2008&)\\n134. Ward ThompsonC, RoeJ, AspinallP, MitchellR, ClowA, MillerD. 134.\\u20022012.  More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. Landsc. Urban Plann.105:221–29[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&author=C+Ward+Thompson&author=J+Roe&author=P+Aspinall&author=R+Mitchell&author=A+Clow&author=D+Miller&journal=Landsc.+Urban+Plann.&volume=105&pages=221-29&publication_year=2012&)\\n135. WellsNM, EvansGW. 135.\\u20022003.  Nearby nature—a buffer of life stress among rural children. Environ. Behav.35:311–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&author=NM+Wells&author=GW+Evans&journal=Environ.+Behav.&volume=35&pages=311-30&publication_year=2003&)\\n136. WellsNM, LekiesKS. 136.\\u20022006.  Nature and the life course: pathways from childhood nature experiences to adult environmentalism. Child. Youth Environ.16:1–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&author=NM+Wells&author=KS+Lekies&journal=Child.+Youth+Environ.&volume=16&pages=1-24&publication_year=2006&)\\n137. WhitelawS. 137.\\u20022012.  The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. Crit. Public Health22:427–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&author=S+Whitelaw&journal=Crit.+Public+Health&volume=22&pages=427-40&publication_year=2012&)\\n138. 138.\\u2002WHO (World Health Organ.)1946. Preamble to the Constitution of the World Health Organization as adopted by the International Health Conference.  New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&publication_year=1946&)\\n139. WilsonSJ, LipseyMW. 139.\\u20022000.  Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. Eval. Program Plann.23:1–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&author=SJ+Wilson&author=MW+Lipsey&journal=Eval.+Program+Plann.&volume=23&pages=1-12&publication_year=2000&)\\n140. YooMH, KwonYJ, SonKC, KaysSJ. 140.\\u20022006.  Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. J. Am. Soc. Hort. Sci.131:452–58[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&author=MH+Yoo&author=YJ+Kwon&author=KC+Son&author=SJ+Kays&journal=J.+Am.+Soc.+Hort.+Sci.&volume=131&pages=452-58&publication_year=2006&)\\n141. ZickCD, SmithKR, Kowaleski-JonesL, UnoC, MerrillBJ. 141.\\u20022013.  Harvesting more than vegetables: the potential weight control benefits of community gardening. Am. J. Public Health103:e1–6[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&author=CD+Zick&author=KR+Smith&author=L+Kowaleski-Jones&author=C+Uno&author=BJ+Merrill&journal=Am.+J.+Public+Health&volume=103&pages=e1-6&publication_year=2013&)\\n\\nLiterature Cited\\n\\n001. AkbariH, KurnDM, BretzSE, HanfordJW. 1.\\u20021997.  Peak power and cooling energy savings of shade trees. Energy Build.25:139–48[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&author=H+Akbari&author=DM+Kurn&author=SE+Bretz&author=JW+Hanford&journal=Energy+Build.&volume=25&pages=139-48&publication_year=1997&)\\n002. AnnerstedtM, WährborgP. 2.\\u20022011.  Nature-assisted therapy: systematic review of controlled and observational studies. Scand. J. Public Health39:371–88[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&author=M+Annerstedt&author=P+W%C3%A4hrborg&journal=Scand.+J.+Public+Health&volume=39&pages=371-88&publication_year=2011&)\\n003. BartonJ, PrettyJ. 3.\\u20022010.  What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. Environ. Sci. Technol.44:3947–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&author=J+Barton&author=J+Pretty&journal=Environ.+Sci.+Technol.&volume=44&pages=3947-55&publication_year=2010&)\\n004. BaumFE, ZierschAM, ZhangG, OsborneK. 4.\\u20022009.  Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. Health Place15:925–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&author=FE+Baum&author=AM+Ziersch&author=G+Zhang&author=K+Osborne&journal=Health+Place&volume=15&pages=925-34&publication_year=2009&)\\n005. BaumanAE, ReisRS, SallisJF, WellsJC, LoosRJ, MartinBW. 5.\\u20022012.  Correlates of physical activity: Why are some people physically active and others not?. Lancet380:258–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&author=AE+Bauman&author=RS+Reis&author=JF+Sallis&author=JC+Wells&author=RJ+Loos&author=BW+Martin&journal=Lancet&volume=380&pages=258-71&publication_year=2012&)\\n006. BeckAM, MeyersNM. 6.\\u20021996.  Health enhancement and companion animal ownership. Annu. Rev. Public Health17:247–57[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&author=AM+Beck&author=NM+Meyers&journal=Annu.+Rev.+Public+Health&volume=17&pages=247-57&publication_year=1996&)\\n007. BeckettKP, Freer-SmithPH, TaylorG. 7.\\u20022000.  The capture of particulate pollution by trees at five contrasting urban sites. Arboric. J.24:209–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&author=KP+Beckett&author=PH+Freer-Smith&author=G+Taylor&journal=Arboric.+J.&volume=24&pages=209-30&publication_year=2000&)\\n008. Bedimo-RungAL, MowenAJ, CohenDA. 8.\\u20022005.  The significance of parks to physical activity and public health: a conceptual model. Am. J. Prev. Med.28:159–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&author=AL+Bedimo-Rung&author=AJ+Mowen&author=DA+Cohen&journal=Am.+J.+Prev.+Med.&volume=28&pages=159-68&publication_year=2005&)\\n009. BenjaminMT, WinerAM. 9.\\u20021998.  Estimating the ozone-forming potential of urban trees and shrubs. Atmos. Environ.32:53–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&author=MT+Benjamin&author=AM+Winer&journal=Atmos.+Environ.&volume=32&pages=53-68&publication_year=1998&)\\n010. BizeR, JohnsonJA, PlotnikoffRC. 10.\\u20022007.  Physical activity level and health-related quality of life in the general adult population: a systematic review. Prev. Med.45:401–15[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&author=R+Bize&author=JA+Johnson&author=RC+Plotnikoff&journal=Prev.+Med.&volume=45&pages=401-15&publication_year=2007&)\\n011. BowlerDE, Buyung-AliLM, KnightTM, PullinAS. 11.\\u20022010.  A systematic review of evidence for the added benefits to health of exposure to natural environments. BMC Public Health10:456[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&author=DE+Bowler&author=LM+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=BMC+Public+Health&volume=10&pages=456&publication_year=2010&)\\n012. BowlerDE, Buyung-AliL, KnightTM, PullinAS. 12.\\u20022010.  Urban greening to cool towns and cities: a systematic review of the empirical evidence. Landsc. Urban Plann.97:147–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&author=DE+Bowler&author=L+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=Landsc.+Urban+Plann.&volume=97&pages=147-55&publication_year=2010&)\\n013. BrackCL. 13.\\u20022002.  Pollution mitigation and carbon sequestration by an urban forest. Environ. Pollut.116:S195–200[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&author=CL+Brack&journal=Environ.+Pollut.&volume=116&pages=S195-200&publication_year=2002&)\\n014. BranasCC, CheneyRA, MacDonaldJM, TamVW, JacksonTD, Ten HaveTR. 14.\\u20022011.  A difference-in-differences analysis of health, safety, and greening vacant urban space. Am. J. Epidemiol.174:1296–306[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&author=CC+Branas&author=RA+Cheney&author=JM+MacDonald&author=VW+Tam&author=TD+Jackson&author=TR+Ten+Have&journal=Am.+J.+Epidemiol.&volume=174&pages=1296-306&publication_year=2011&)\\n015. BratmanGN, HamiltonJP, DailyGC. 15.\\u20022012.  The impacts of nature experience on human cognitive function and mental health. Ann. N.Y. Acad. Sci.1249:118–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&author=GN+Bratman&author=JP+Hamilton&author=GC+Daily&journal=Ann.+N.Y.+Acad.+Sci.&volume=1249&pages=118-36&publication_year=2012&)\\n016. BringslimarkT, HartigT, PatilGG. 16.\\u20022009.  The psychological benefits of indoor plants: a critical review of the experimental literature. J. Environ. Psychol.29:422–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&author=T+Bringslimark&author=T+Hartig&author=GG+Patil&journal=J.+Environ.+Psychol.&volume=29&pages=422-33&publication_year=2009&)\\n017. BroekhuizenK, de VriesSI, PierikFH. 17.\\u20022013. Healthy Aging in a Green Living Environment: A Systematic Review of the Literature. TNO rep. R10154 Leiden: TNO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&author=K+Broekhuizen&author=SI+de+Vries&author=FH+Pierik&publication_year=2013&)\\n018. BrooksGD, BushRK. 18.\\u20022009.  Allergens and other factors important in atopic disease. Patterson\\'s Allergic Diseases LC Grammer, PA Greenberger 73–103 Philadelphia: Lippincott, Williams & Wilkins, 7th ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&author=GD+Brooks&author=RK+Bush&journal=Patterson%27s+Allergic+Diseases&pages=73-103&publication_year=2009&)\\n019. CariñanosP, Casares-PorcelM. 19.\\u20022011.  Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. Landsc. Urban Plann.101:205–14[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&author=P+Cari%C3%B1anos&author=M+Casares-Porcel&journal=Landsc.+Urban+Plann.&volume=101&pages=205-14&publication_year=2011&)\\n020. ChameidesWL, LindsayRW, RichardsonJ, KiangCS. 20.\\u20021989.  The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. Science241:1473–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&author=WL+Chameides&author=RW+Lindsay&author=J+Richardson&author=CS+Kiang&journal=Science&volume=241&pages=1473-75&publication_year=1989&)\\n021. CimprichB. 21.\\u20021993.  Development of an intervention to restore attention in cancer patients. Cancer Nurs.16:83–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&author=B+Cimprich&journal=Cancer+Nurs.&volume=16&pages=83-92&publication_year=1993&)\\n022. ColferCJP, SheilD, KishiM. 22.\\u20022006. Forests and Human Health: Assessing the Evidence Bogor, Indones.: Cent. Int. For. Res [http://www.cifor.org/publications/pdf\\\\_files/OccPapers/OP-45.pdf](http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&author=CJP+Colfer&author=D+Sheil&author=M+Kishi&publication_year=2006&)\\n023. DayLL. 23.\\u20022000.  Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. J. Plan Educ. Res.19:265–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&author=LL+Day&journal=J.+Plan+Educ.+Res.&volume=19&pages=265-75&publication_year=2000&)\\n024. de VriesS, ClaßenT, Eigenheer-HugS-M, KorpelaK, MaasJ. 24.\\u2002 et al.2011.  Contributions of natural environments to physical activity.  See Ref. 98 205–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&author=S+de+Vries&author=T+Cla%C3%9Fen&author=S-M+Eigenheer-Hug&author=K+Korpela&author=J+Maas&pages=205-43&publication_year=2011&)\\n025. de VriesS, van DillenSME, GroenewegenPP, SpreeuwenbergP. 25.\\u20022013.  Streetscape greenery and health: stress, social cohesion and physical activity as mediators. Soc. Sci. Med.94:26–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&author=S+de+Vries&author=SME+van+Dillen&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Soc.+Sci.+Med.&volume=94&pages=26-33&publication_year=2013&)\\n026. de VriesS, VerheijRA, GroenewegenPP, SpreeuwenbergP. 26.\\u20022003.  Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. Environ. Plann. A35:1717–31[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&author=S+de+Vries&author=RA+Verheij&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Environ.+Plann.+A&volume=35&pages=1717-31&publication_year=2003&)\\n027. DellaValleCT, TricheEW, LeadererBP, BellML. 27.\\u20022012.  Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. Epidemiology23:55–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&author=CT+DellaValle&author=EW+Triche&author=BP+Leaderer&author=ML+Bell&journal=Epidemiology&volume=23&pages=55-63&publication_year=2012&)\\n028. Den HertogF, BronkhorstM, MoermanM, Van WilgenburgR. 28.\\u20022006. De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit \\\\[The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity\\\\]. Amsterdam: EMGO Inst.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&author=F+Den+Hertog&author=M+Bronkhorst&author=M+Moerman&author=R+Van+Wilgenburg&publication_year=2006&)\\n029. DingD, SallisJF, KerrJ, LeeS, RosenbergDE. 29.\\u20022011.  Neighborhood environment and physical activity among youth: a review. Am. J. Prev. Med.41:442–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&author=D+Ding&author=JF+Sallis&author=J+Kerr&author=S+Lee&author=DE+Rosenberg&journal=Am.+J.+Prev.+Med.&volume=41&pages=442-55&publication_year=2011&)\\n030. DommJ, DrewR, GreeneA, RipleyE, SmardonR, TordesillasJ. 30.\\u20022008.  Recommended urban forest mixtures to optimize selected environmental benefits. EnviroNews: Int. Soc. Environ. Bot.14:7–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&author=J+Domm&author=R+Drew&author=A+Greene&author=E+Ripley&author=R+Smardon&author=J+Tordesillas&journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&volume=14&pages=7-10&publication_year=2008&)\\n031. DonovanGH, PrestemonJP. 31.\\u20022012.  The effect of trees on crime in Portland, Oregon. Environ. Behav.44:3–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&author=GH+Donovan&author=JP+Prestemon&journal=Environ.+Behav.&volume=44&pages=3-30&publication_year=2012&)\\n032. EidJ, OvermanHG, PugaD, TurnerMA. 32.\\u20022008.  Fat city: questioning the relationship between urban sprawl and obesity. J. Urban Econ.63:385–404[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&author=J+Eid&author=HG+Overman&author=D+Puga&author=MA+Turner&journal=J.+Urban+Econ.&volume=63&pages=385-404&publication_year=2008&)\\n033. EngelGL. 33.\\u20021977.  The need for a new medical model: a challenge for biomedicine. Science196:129–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&author=GL+Engel&journal=Science&volume=196&pages=129-36&publication_year=1977&)\\n034. EscobedoFJ, NowakDJ. 34.\\u20022009.  Spatial heterogeneity and air pollution removal by an urban forest. Landsc. Urban Plann.90:102–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&author=FJ+Escobedo&author=DJ+Nowak&journal=Landsc.+Urban+Plann.&volume=90&pages=102-10&publication_year=2009&)\\n035. FerdinandAO, SenB, RahurkarS, EnglerS, MenachemiN. 35.\\u20022012.  The relationship between built environments and physical activity: a systematic review. Am. J. Public Health102:e7–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&author=AO+Ferdinand&author=B+Sen&author=S+Rahurkar&author=S+Engler&author=N+Menachemi&journal=Am.+J.+Public+Health&volume=102&pages=e7-13&publication_year=2012&)\\n036. ForrestR, KearnsA. 36.\\u20022001.  Social cohesion, social capital and the neighbourhood. Urban Stud.38:2125–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&author=R+Forrest&author=A+Kearns&journal=Urban+Stud.&volume=38&pages=2125-43&publication_year=2001&)\\n037. FowlerD. 37.\\u20022002.  Pollutant deposition and uptake by vegetation. Air Pollution and Plant Life JNB Bell, M Treshow 43–67 New York: Wiley, 2nd ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&author=D+Fowler&journal=Air+Pollution+and+Plant+Life&pages=43-67&publication_year=2002&)\\n038. FrancisJ, Giles-CortiB, WoodL, KnuimanM. 38.\\u20022012.  Creating sense of community: the role of public space. J. Environ. Psychol.32:401–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&author=J+Francis&author=B+Giles-Corti&author=L+Wood&author=M+Knuiman&journal=J.+Environ.+Psychol.&volume=32&pages=401-9&publication_year=2012&)\\n039. FrancisJ, WoodLJ, KnuimanM, Giles-CortiB. 39.\\u20022012.  Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. Soc. Sci. Med.74:1570–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&author=J+Francis&author=LJ+Wood&author=M+Knuiman&author=B+Giles-Corti&journal=Soc.+Sci.+Med.&volume=74&pages=1570-77&publication_year=2012&)\\n040. FraserSDS, LockK. 40.\\u20022011.  Cycling for transport and public health: a systematic review of the effect of the environment on cycling. Eur. J. Public Health21:738–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&author=SDS+Fraser&author=K+Lock&journal=Eur.+J.+Public+Health&volume=21&pages=738-43&publication_year=2011&)\\n041. FrostSS, GoinsRT, HunterRH, HookerSP, BryantLL. 41.\\u2002 et al.2010.  Effects of the built environment on physical activity of adults living in rural settings. Am. J. Health Promot.24:267–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&author=SS+Frost&author=RT+Goins&author=RH+Hunter&author=SP+Hooker&author=LL+Bryant&journal=Am.+J.+Health+Promot.&volume=24&pages=267-83&publication_year=2010&)\\n042. FrumkinH. 42.\\u20022001.  Beyond toxicity: human health and the natural environment. Am. J. Prev. Med.20:234–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=20&pages=234-40&publication_year=2001&)\\n043. FrumkinH. 43.\\u20022013.  The evidence of nature and the nature of evidence. Am. J. Prev. Med.44:196–97[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=44&pages=196-97&publication_year=2013&)\\n044. GaleaS, VlahovD. 44.\\u20022005.  Urban health: evidence, challenges, and directions. Annu. Rev. Public Health26:341–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&author=S+Galea&author=D+Vlahov&journal=Annu.+Rev.+Public+Health&volume=26&pages=341-65&publication_year=2005&)\\n045. GaterslebenB, AndrewsM. 45.\\u20022013.  When walking in nature is not restorative—the role of prospect and refuge. Health Place20:91–101[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&author=B+Gatersleben&author=M+Andrews&journal=Health+Place&volume=20&pages=91-101&publication_year=2013&)\\n046. Giles-CortiB, BroomhallMH, KnuimanM, CollinsC, DouglasK. 46.\\u2002 et al.2005.  Increasing walking: How important is distance to, attractiveness, and size of public open space?. Am. J. Prev. Med.28:169–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&author=B+Giles-Corti&author=MH+Broomhall&author=M+Knuiman&author=C+Collins&author=K+Douglas&journal=Am.+J.+Prev.+Med.&volume=28&pages=169-76&publication_year=2005&)\\n047. GonzalezMT, HartigT, PatilGG, MartinsenEW, KirkevoldM. 47.\\u20022010.  Therapeutic horticulture in clinical depression: a prospective study of active components. J. Adv. Nurs.66:2002–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&author=MT+Gonzalez&author=T+Hartig&author=GG+Patil&author=EW+Martinsen&author=M+Kirkevold&journal=J.+Adv.+Nurs.&volume=66&pages=2002-13&publication_year=2010&)\\n048. HartigT. 48.\\u20021993.  Nature experience in transactional perspective. Landsc. Urban Plann.25:17–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&author=T+Hartig&journal=Landsc.+Urban+Plann.&volume=25&pages=17-36&publication_year=1993&)\\n049. HartigT, EvansGW, JamnerLD, DavisDS, GärlingT. 49.\\u20022003.  Tracking restoration in natural and urban field settings. J. Environ. Psychol.23:109–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&author=T+Hartig&author=GW+Evans&author=LD+Jamner&author=DS+Davis&author=T+G%C3%A4rling&journal=J.+Environ.+Psychol.&volume=23&pages=109-23&publication_year=2003&)\\n050. HartigT, FranssonU. 50.\\u20022009.  Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. Environ. Plann. A41:82–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&author=T+Hartig&author=U+Fransson&journal=Environ.+Plann.+A&volume=41&pages=82-96&publication_year=2009&)\\n051. HartigT, JohanssonG, KylinC. 51.\\u20022003.  Residence in the social ecology of stress and restoration. J. Soc. Iss.59:611–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&author=T+Hartig&author=G+Johansson&author=C+Kylin&journal=J.+Soc.+Iss.&volume=59&pages=611-36&publication_year=2003&)\\n052. HartigT, MangM, EvansGW. 52.\\u20021991.  Restorative effects of natural environment experiences. Environ. Behav.23:3–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&author=T+Hartig&author=M+Mang&author=GW+Evans&journal=Environ.+Behav.&volume=23&pages=3-26&publication_year=1991&)\\n053. HartigT, van den BergAE, HagerhallCM, TomalakM, BauerN. 53.\\u2002 et al.2011.  Health benefits of nature experience: psychological, social and cultural processes.  See Ref. 98 127–68\\n054. 54.\\u2002Health Counc. Neth2004. Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being. The Hague: Health Counc. Neth., RMNO [http://www.gezondheidsraad.nl/sites/default/files/Nature\\\\_and\\\\_health.pdf](http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&publication_year=2004&)\\n055. HeinenE, van WeeB, MaatK. 55.\\u20022010.  Commuting by bicycle: an overview of the literature. Transp. Rev.30:59–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&author=E+Heinen&author=B+van+Wee&author=K+Maat&journal=Transp.+Rev.&volume=30&pages=59-96&publication_year=2010&)\\n056. HillsdonM, PanterJ, FosterC, JonesA. 56.\\u20022006.  The relationship between access and quality of urban green space with population physical activity. Public Health120:1127–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&author=M+Hillsdon&author=J+Panter&author=C+Foster&author=A+Jones&journal=Public+Health&volume=120&pages=1127-32&publication_year=2006&)\\n057. Holt-LunstadJ, SmithTB, LaytonJB. 57.\\u20022010.  Social relationships and mortality risk: a meta-analytic review. PLoS Med.7:e1000316[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&author=J+Holt-Lunstad&author=TB+Smith&author=JB+Layton&journal=PLoS+Med.&volume=7&pages=e1000316&publication_year=2010&)\\n058. HomeR, HunzikerM, BauerN. 58.\\u20022012.  Psychosocial outcomes as motivations for visiting nearby urban green spaces. Leis. Sci.34:350–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&author=R+Home&author=M+Hunziker&author=N+Bauer&journal=Leis.+Sci.&volume=34&pages=350-65&publication_year=2012&)\\n059. IslamMN, RahmanK-S, BaharMM, HabibMA, AndoK, HattoriN. 59.\\u20022012.  Pollution attenuation by roadside greenbelt in and around urban areas. Urban For. Urban Green.11:460–64[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&author=MN+Islam&author=K-S+Rahman&author=MM+Bahar&author=MA+Habib&author=K+Ando&author=N+Hattori&journal=Urban+For.+Urban+Green.&volume=11&pages=460-64&publication_year=2012&)\\n060. JahnckeH, HyggeS, HalinN, GreenAM, DimbergK. 60.\\u20022011.  Open-plan office noise: cognitive performance and restoration. J. Environ. Psychol.31:373–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&author=H+Jahncke&author=S+Hygge&author=N+Halin&author=AM+Green&author=K+Dimberg&journal=J.+Environ.+Psychol.&volume=31&pages=373-82&publication_year=2011&)\\n061. JanssenI, LeBlancAG. 61.\\u20022010.  Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. Int. J. Behav. Nutr. Phys. Act.7:40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&author=I+Janssen&author=AG+LeBlanc&journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&volume=7&pages=40&publication_year=2010&)\\n062. JanssonM, ForsH, LindgrenT, WiströmB. 62.\\u20022013.  Perceived personal safety in relation to urban woodland vegetation—a review. Urban For. Urban Green.12:127–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&author=M+Jansson&author=H+Fors&author=T+Lindgren&author=B+Wistr%C3%B6m&journal=Urban+For.+Urban+Green.&volume=12&pages=127-33&publication_year=2013&)\\n063. JimCY, ChenWY. 63.\\u20022008.  Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). J. Environ. Manag.88:665–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&author=CY+Jim&author=WY+Chen&journal=J.+Environ.+Manag.&volume=88&pages=665-76&publication_year=2008&)\\n064. JohanssonM, HartigT, StaatsH. 64.\\u20022011.  Psychological benefits of walking: moderation by company and outdoor environment. Appl. Psychol. Health Well-Being3:261–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&author=M+Johansson&author=T+Hartig&author=H+Staats&journal=Appl.+Psychol.+Health+Well-Being&volume=3&pages=261-80&publication_year=2011&)\\n065. KaczynskiAT, HendersonKA. 65.\\u20022007.  Environmental correlates of physical activity: a review of evidence about parks and recreation. Leis. Sci.29:315–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&author=AT+Kaczynski&author=KA+Henderson&journal=Leis.+Sci.&volume=29&pages=315-54&publication_year=2007&)\\n066. KaplanR. 66.\\u20021993.  The role of nature in the context of the workplace. Landsc. Urban Plann.26:193–201[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&author=R+Kaplan&journal=Landsc.+Urban+Plann.&volume=26&pages=193-201&publication_year=1993&)\\n067. KaplanR, KaplanS. 67.\\u20021989. The Experience of Nature: A Psychological Perspective New York: Cambridge Univ. Press\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&author=R+Kaplan&author=S+Kaplan&publication_year=1989&)\\n068. KaplanS. 68.\\u20021995.  The restorative benefits of nature: toward an integrative framework. J. Environ. Psychol.15:169–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&author=S+Kaplan&journal=J.+Environ.+Psychol.&volume=15&pages=169-82&publication_year=1995&)\\n069. KaplanS. 69.\\u20022001.  Meditation, restoration, and the management of mental fatigue. Environ. Behav.33:480–506[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&author=S+Kaplan&journal=Environ.+Behav.&volume=33&pages=480-506&publication_year=2001&)\\n070. KarlT, HarleyP, EmmonsL, ThorntonB, GuentherA. 70.\\u2002 et al.2010.  Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. Science330:816–19[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&author=T+Karl&author=P+Harley&author=L+Emmons&author=B+Thornton&author=A+Guenther&journal=Science&volume=330&pages=816-19&publication_year=2010&)\\n071. KaźmierczakA. 71.\\u20022013.  The contribution of local parks to neighbourhood social ties. Landsc. Urban Plann.109:31–44[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&author=A+Ka%C5%BAmierczak&journal=Landsc.+Urban+Plann.&volume=109&pages=31-44&publication_year=2013&)\\n072. KnopfRC. 72.\\u20021987.  Human behavior, cognition, and affect in the natural environment. Handbook of Environmental Psychology D Stokols, I Altman 783–825 New York: Wiley\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&author=RC+Knopf&journal=Handbook+of+Environmental+Psychology&pages=783-825&publication_year=1987&)\\n073. KorpelaK, HartigT. 73.\\u20021996.  Restorative qualities of favorite places. J. Environ. Psychol.16:221–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&author=K+Korpela&author=T+Hartig&journal=J.+Environ.+Psychol.&volume=16&pages=221-33&publication_year=1996&)\\n074. KrollJH, SeinfeldJH. 74.\\u20022008.  Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. Atmos. Environ.42:3593–624[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&author=JH+Kroll&author=JH+Seinfeld&journal=Atmos.+Environ.&volume=42&pages=3593-624&publication_year=2008&)\\n075. KuoFE, SullivanWC. 75.\\u20022001.  Aggression and violence in the inner city: effects of environment via mental fatigue. Environ. Behav.33:543–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=543-71&publication_year=2001&)\\n076. KuoFE, SullivanWC. 76.\\u20022001.  Environment and crime in the inner city: Does vegetation reduce crime?. Environ. Behav.33:343–67[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=343-67&publication_year=2001&)\\n077. KuoFE, SullivanWC, ColeyRL, BrunsonL. 77.\\u20021998.  Fertile ground for community: inner-city neighborhood common spaces. Am. J. Community Psychol.26:823–51[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&author=FE+Kuo&author=WC+Sullivan&author=RL+Coley&author=L+Brunson&journal=Am.+J.+Community+Psychol.&volume=26&pages=823-51&publication_year=1998&)\\n078. LachowyczK, JonesAP. 78.\\u20022011.  Greenspace and obesity: a systematic review of the evidence. Obes. Rev.12:e183–89[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&author=K+Lachowycz&author=AP+Jones&journal=Obes.+Rev.&volume=12&pages=e183-89&publication_year=2011&)\\n079. LachowyczK, JonesAP. 79.\\u20022013.  Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. Landsc. Urban Plann.118:62–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&author=K+Lachowycz&author=AP+Jones&journal=Landsc.+Urban+Plann.&volume=118&pages=62-69&publication_year=2013&)\\n080. LindheimR, SymeSL. 80.\\u20021983.  Environments, people, and health. Annu. Rev. Public Health4:335–59[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&author=R+Lindheim&author=SL+Syme&journal=Annu.+Rev.+Public+Health&volume=4&pages=335-59&publication_year=1983&)\\n081. LiuY-J, MuY-J, ZhuY-G, DingH, ArensNC. 81.\\u20022007.  Which ornamental plant species effectively remove benzene from indoor air?. Atmos. Environ.41:650–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&author=Y-J+Liu&author=Y-J+Mu&author=Y-G+Zhu&author=H+Ding&author=NC+Arens&journal=Atmos.+Environ.&volume=41&pages=650-54&publication_year=2007&)\\n082. LloydGER, ChadwickJ, MannWN. 82.\\u20021978. Hippocratic Writings Harmondsworth: Penguin\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&author=GER+Lloyd&author=J+Chadwick&author=WN+Mann&publication_year=1978&)\\n083. LovasiGS, O\\'Neil-DunneJP, LuJW, SheehanD, PerzanowskiMS. 83.\\u2002 et al.2013.  Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. Environ. Health Perspect.121:494–500 00e1–6\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&author=GS+Lovasi&author=JP+O%27Neil-Dunne&author=JW+Lu&author=D+Sheehan&author=MS+Perzanowski&journal=Environ.+Health+Perspect.&volume=121&pages=494-500&publication_year=2013&)\\n084. MaasJ, SpreeuwenbergP, van Winsum-WestraM, VerheijRA, de VriesS, GroenewegenPP. 84.\\u20022009.  Is green space in the living environment associated with people\\'s feelings of social safety?. Environ. Plann. A41:1763–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&author=J+Maas&author=P+Spreeuwenberg&author=M+van+Winsum-Westra&author=RA+Verheij&author=S+de+Vries&author=PP+Groenewegen&journal=Environ.+Plann.+A&volume=41&pages=1763-77&publication_year=2009&)\\n085. MaasJ, van DillenSM, VerheijRA, GroenewegenPP. 85.\\u20022009.  Social contacts as a possible mechanism behind the relation between green space and health. Health Place15:586–95[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&author=J+Maas&author=SM+van+Dillen&author=RA+Verheij&author=PP+Groenewegen&journal=Health+Place&volume=15&pages=586-95&publication_year=2009&)\\n086. MaasJ, VerheijRA, de VriesS, SpreeuwenbergP, SchellevisFG, GroenewegenPP. 86.\\u20022009.  Morbidity is related to a green living environment. J. Epidemiol. Community Health63:967–73[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&author=J+Maas&author=RA+Verheij&author=S+de+Vries&author=P+Spreeuwenberg&author=FG+Schellevis&author=PP+Groenewegen&journal=J.+Epidemiol.+Community+Health&volume=63&pages=967-73&publication_year=2009&)\\n087. MaasJ, VerheijRA, GroenewegenPP, de VriesS, SpreeuwenbergP. 87.\\u20022006.  Green space, urbanity, and health: How strong is the relation?. J. Epidemiol. Community Health60:587–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&author=S+de+Vries&author=P+Spreeuwenberg&journal=J.+Epidemiol.+Community+Health&volume=60&pages=587-92&publication_year=2006&)\\n088. MaasJ, VerheijRA, SpreeuwenbergP, GroenewegenPP. 88.\\u20022008.  Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. BMC Public Health8:206[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&author=J+Maas&author=RA+Verheij&author=P+Spreeuwenberg&author=PP+Groenewegen&journal=BMC+Public+Health&volume=8&pages=206&publication_year=2008&)\\n089. MallerC, TownsendM, St LegerL, Henderson-WilsonC, PryorA. 89.\\u2002 et al.2008. Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context Melbourne, Aust.: Deakin Univ.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&author=C+Maller&author=M+Townsend&author=L+St+Leger&author=C+Henderson-Wilson&author=A+Pryor&publication_year=2008&)\\n090. McCormackGR, RockM, TooheyAM, HignellD. 90.\\u20022010.  Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. Health Place16:712–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&author=GR+McCormack&author=M+Rock&author=AM+Toohey&author=D+Hignell&journal=Health+Place&volume=16&pages=712-26&publication_year=2010&)\\n091. McCurdyLE, WinterbottomKE, MehtaSS, RobertsJR. 91.\\u20022010.  Using nature and outdoor activity to improve children\\'s health. Curr. Probl. Pediatr. Adolesc. Health Care40:102–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&author=LE+McCurdy&author=KE+Winterbottom&author=SS+Mehta&author=JR+Roberts&journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&volume=40&pages=102-17&publication_year=2010&)\\n092. MitchellR. 92.\\u20022013.  Is physical activity in natural environments better for mental health than physical activity in other environments?. Soc. Sci. Med.91:130–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=91&pages=130-34&publication_year=2013&)\\n093. MitchellR, PophamF. 93.\\u20022007.  Greenspace, urbanity and health: relationships in England. J. Epidemiol. Community Health61:681–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&author=R+Mitchell&author=F+Popham&journal=J.+Epidemiol.+Community+Health&volume=61&pages=681-83&publication_year=2007&)\\n094. MitchellR, PophamF. 94.\\u20022008.  Effect of exposure to natural environment on health inequalities: an observational population study. Lancet372:1655–60[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&author=R+Mitchell&author=F+Popham&journal=Lancet&volume=372&pages=1655-60&publication_year=2008&)\\n095. MitrioneS. 95.\\u20022008.  Therapeutic responses to natural environments: using gardens to improve health care. Minn. Med.91:31–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&author=S+Mitrione&journal=Minn.+Med.&volume=91&pages=31-34&publication_year=2008&)\\n096. MuñozS-A. 96.\\u20022009. Children in the Outdoors: A Literature Review Forres, Scotl.: Sustain. Dev. Res. Cent.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&author=S-A+Mu%C3%B1oz&publication_year=2009&)\\n097. NieminenT, MartelinT, KoskinenS, AroH, AlanenE, HyyppäMT. 97.\\u20022010.  Social capital as a determinant of self-rated health and psychological well-being. Int. J. Public Health55:531–42[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&author=T+Nieminen&author=T+Martelin&author=S+Koskinen&author=H+Aro&author=E+Alanen&author=MT+Hyypp%C3%A4&journal=Int.+J.+Public+Health&volume=55&pages=531-42&publication_year=2010&)\\n098. NilssonK, SangsterM, GallisC, HartigT, de VriesS. 98.\\u2002 et al.2011. Forests, Trees and Human Health Dordrecht: Springer\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&author=K+Nilsson&author=M+Sangster&author=C+Gallis&author=T+Hartig&author=S+de+Vries&publication_year=2011&)\\n099. NilssonME, BerglundB. 99.\\u20022006.  Soundscape quality in suburban green areas and city parks. Acta Acustica United Acustica92:903–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&author=ME+Nilsson&author=B+Berglund&journal=Acta+Acustica+United+Acustica&volume=92&pages=903-11&publication_year=2006&)\\n100. NowakDJ, CraneDE, StevensJC. 100.\\u20022006.  Air pollution removal by urban trees and shrubs in the United States. Urban For. Urban Green.4:115–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&author=DJ+Nowak&author=DE+Crane&author=JC+Stevens&journal=Urban+For.+Urban+Green.&volume=4&pages=115-23&publication_year=2006&)\\n101. OlmstedFL. 101.\\u20021970 (1870). Public Parks and the Enlargement of Towns New York: Arno (Cambridge, MA: Riverside)\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&author=FL+Olmsted&)\\n102. OrwellRL, WoodRA, BurchettMD, TarranJ, TorpyF. 102.\\u20022006.  The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. Water Air Soil Poll.177:59–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&author=RL+Orwell&author=RA+Wood&author=MD+Burchett&author=J+Tarran&author=F+Torpy&journal=Water+Air+Soil+Poll.&volume=177&pages=59-80&publication_year=2006&)\\n103. PaolettiE, BardelliT, GiovanniniG, PecchioliL. 103.\\u20022011.  Air quality impact of an urban park over time. Procedia Environ. Sci.4:10–16[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&author=E+Paoletti&author=T+Bardelli&author=G+Giovannini&author=L+Pecchioli&journal=Procedia+Environ.+Sci.&volume=4&pages=10-16&publication_year=2011&)\\n104. PowellKE, PaluchAE, BlairSN. 104.\\u20022011.  Physical activity for health: What Kind? How much? How Intense? On Top of What?. Annu. Rev. Public Health32:349–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&author=KE+Powell&author=AE+Paluch&author=SN+Blair&journal=Annu.+Rev.+Public+Health&volume=32&pages=349-65&publication_year=2011&)\\n105. PrettyJ, PeacockJ, SellensM, GriffinM. 105.\\u20022005.  The mental and physical health outcomes of green exercise. Int. J. Environ. Health Res.15:319–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&author=J+Pretty&author=J+Peacock&author=M+Sellens&author=M+Griffin&journal=Int.+J.+Environ.+Health+Res.&volume=15&pages=319-37&publication_year=2005&)\\n106. ProctorJD. 106.\\u20021998.  The social construction of nature: relativist accusations, pragmatist and critical realist responses. Ann. Assoc. Am. Geogr.88:352–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&author=JD+Proctor&journal=Ann.+Assoc.+Am.+Geogr.&volume=88&pages=352-76&publication_year=1998&)\\n107. RichardsonEA, MitchellR. 107.\\u20022010.  Gender differences in relationships between urban green space and health in the United Kingdom. Soc. Sci. Med.71:568–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&author=EA+Richardson&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=71&pages=568-75&publication_year=2010&)\\n108. RichardsonEA, MitchellR, HartigT, de VriesS, Astell-BurtT, FrumkinH. 108.\\u20022012.  Green cities and health: a question of scale?. J. Epidemiol. Community Health66:160–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&author=EA+Richardson&author=R+Mitchell&author=T+Hartig&author=S+de+Vries&author=T+Astell-Burt&author=H+Frumkin&journal=J.+Epidemiol.+Community+Health&volume=66&pages=160-65&publication_year=2012&)\\n109. RichardsonEA, PearceJ, MitchellR, KinghamS. 109.\\u20022013.  Role of physical activity in the relationship between urban green space and health. Public Health127:318–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&author=EA+Richardson&author=J+Pearce&author=R+Mitchell&author=S+Kingham&journal=Public+Health&volume=127&pages=318-24&publication_year=2013&)\\n110. RiosR, AikenLS, ZautraAJ. 110.\\u20022012.  Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. Ann. Behav. Med.43:50–61[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&author=R+Rios&author=LS+Aiken&author=AJ+Zautra&journal=Ann.+Behav.+Med.&volume=43&pages=50-61&publication_year=2012&)\\n111. RoseG. 111.\\u20022001.  Sick individuals and sick populations. Int. J. Epidemiol.30:427–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&author=G+Rose&journal=Int.+J.+Epidemiol.&volume=30&pages=427-32&publication_year=2001&)\\n112. SarteletKN, CouvidatF, SeigneurC, RoustanY. 112.\\u20022012.  Impact of biogenic emissions on air quality over Europe and North America. Atmos. Environ.53:131–41[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&author=KN+Sartelet&author=F+Couvidat&author=C+Seigneur&author=Y+Roustan&journal=Atmos.+Environ.&volume=53&pages=131-41&publication_year=2012&)\\n113. SetäläH, ViippolaV, RantalainenAL, PennanenA, Yli-PelkonenV. 113.\\u20022012.  Does urban vegetation mitigate air pollution in northern conditions?. Environ. Pollut.183:104–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&author=H+Set%C3%A4l%C3%A4&author=V+Viippola&author=AL+Rantalainen&author=A+Pennanen&author=V+Yli-Pelkonen&journal=Environ.+Pollut.&volume=183&pages=104-12&publication_year=2012&)\\n114. SimpsonJR, McPhersonEG. 114.\\u20021998.  Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. Atmos. Environ.32:69–74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&author=JR+Simpson&author=EG+McPherson&journal=Atmos.+Environ.&volume=32&pages=69-74&publication_year=1998&)\\n115. SmardonRC. 115.\\u20021988.  Perception and aesthetics of the urban environment: review of the role of vegetation. Landsc. Urban Plann.15:85–106[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&author=RC+Smardon&journal=Landsc.+Urban+Plann.&volume=15&pages=85-106&publication_year=1988&)\\n116. StaatsH, Van GemerdenE, HartigT. 116.\\u20022010.  Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. Leis. Sci.32:401–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&author=H+Staats&author=E+Van+Gemerden&author=T+Hartig&journal=Leis.+Sci.&volume=32&pages=401-17&publication_year=2010&)\\n117. StigsdotterUK, EkholmO, SchipperijnJ, ToftagerM, Kamper-JørgensenF, RandrupTB. 117.\\u20022010.  Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. Scand. J. Public Health38:411–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&author=UK+Stigsdotter&author=O+Ekholm&author=J+Schipperijn&author=M+Toftager&author=F+Kamper-J%C3%B8rgensen&author=TB+Randrup&journal=Scand.+J.+Public+Health&volume=38&pages=411-17&publication_year=2010&)\\n118. SugiyamaT, LeslieE, Giles-CortiB, OwenN. 118.\\u20022008.  Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. J. Epidemiol. Community Health62:e9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&author=T+Sugiyama&author=E+Leslie&author=B+Giles-Corti&author=N+Owen&journal=J.+Epidemiol.+Community+Health&volume=62&pages=e9&publication_year=2008&)\\n119. TakanoT, NakamuraK, WatanabeM. 119.\\u20022002.  Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. J. Epidemiol. Community Health56:913–18[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&author=T+Takano&author=K+Nakamura&author=M+Watanabe&journal=J.+Epidemiol.+Community+Health&volume=56&pages=913-18&publication_year=2002&)\\n120. TallisM, TaylorG, SinnettD, Freer-SmithP. 120.\\u20022011.  Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. Landsc. Urban Plann.103:129–38[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&author=M+Tallis&author=G+Taylor&author=D+Sinnett&author=P+Freer-Smith&journal=Landsc.+Urban+Plann.&volume=103&pages=129-38&publication_year=2011&)\\n121. TaylorAF, KuoFE. 121.\\u20022009.  Children with attention deficits concentrate better after walk in the park. J. Atten. Disord.12:402–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&author=AF+Taylor&author=FE+Kuo&journal=J.+Atten.+Disord.&volume=12&pages=402-9&publication_year=2009&)\\n122. TaylorAF, KuoFE, SullivanWC. 122.\\u20022002.  Views of nature and self-discipline: evidence from inner city children. J. Environ. Psychol.22:49–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&author=AF+Taylor&author=FE+Kuo&author=WC+Sullivan&journal=J.+Environ.+Psychol.&volume=22&pages=49-63&publication_year=2002&)\\n123. Thompson CoonJ, BoddyK, SteinK, WhearR, BartonJ, DepledgeMH. 123.\\u20022011.  Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. Environ. Sci. Technol.45:1761–72[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&author=J+Thompson+Coon&author=K+Boddy&author=K+Stein&author=R+Whear&author=J+Barton&author=MH+Depledge&journal=Environ.+Sci.+Technol.&volume=45&pages=1761-72&publication_year=2011&)\\n124. TsunetsuguY, ParkB, MiyazakiY. 124.\\u20022010.  Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. Environ. Health Prevent. Med.15:27–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&author=Y+Tsunetsugu&author=B+Park&author=Y+Miyazaki&journal=Environ.+Health+Prevent.+Med.&volume=15&pages=27-37&publication_year=2010&)\\n125. UlrichRS. 125.\\u20021979.  Visual landscapes and psychological well-being. Landsc. Res.4:17–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&author=RS+Ulrich&journal=Landsc.+Res.&volume=4&pages=17-23&publication_year=1979&)\\n126. UlrichRS. 126.\\u20021983.  Aesthetic and affective response to natural environment. Human Behaviour and Environment: Advances in Theory and Research. Volume\\n     6Behaviour and the Natural Environment, ed. I\\n     Altman, JF Wohlwill 85–125 New York: Plenum\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&author=RS+Ulrich&journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&pages=85-125&publication_year=1983&)\\n127. UlrichRS, SimonsRF, LositoBD, FioritoE, MilesMA, ZelsonM. 127.\\u20021991.  Stress recovery during exposure to natural and urban environments. J. Environ. Psychol.11:201–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&author=RS+Ulrich&author=RF+Simons&author=BD+Losito&author=E+Fiorito&author=MA+Miles&author=M+Zelson&journal=J.+Environ.+Psychol.&volume=11&pages=201-30&publication_year=1991&)\\n128. Van CauwenbergJ, De BourdeaudhuijI, De MeesterF, Van DyckD, SalmonJ. 128.\\u2002 et al.2011.  Relationship between the physical environment and physical activity in older adults: a systematic review. Health Place17:458–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&author=J+Van+Cauwenberg&author=I+De+Bourdeaudhuij&author=F+De+Meester&author=D+Van+Dyck&author=J+Salmon&journal=Health+Place&volume=17&pages=458-69&publication_year=2011&)\\n129. Van den BergAE, CustersMHG. 129.\\u20022011.  Gardening promotes neuroendocrine and affective restoration from stress. J. Health Psychol.16:3–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&author=AE+Van+den+Berg&author=MHG+Custers&journal=J.+Health+Psychol.&volume=16&pages=3-11&publication_year=2011&)\\n130. Van den BergAE, MaasJ, VerheijRA, GroenewegenPP. 130.\\u20022010.  Green space as a buffer between stressful life events and health. Soc. Sci. Med.70:1203–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&author=AE+Van+den+Berg&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&journal=Soc.+Sci.+Med.&volume=70&pages=1203-10&publication_year=2010&)\\n131. Van den BergAE, van Winsum-WestraM, de VriesS, van DillenSME. 131.\\u20022010.  Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. Environ. Health9:74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&author=AE+Van+den+Berg&author=M+van+Winsum-Westra&author=S+de+Vries&author=SME+van+Dillen&journal=Environ.+Health&volume=9&pages=74&publication_year=2010&)\\n132. Van HerzeleA, BellS, HartigT, PodestaMTC, van ZonR. 132.\\u20022011.  Health benefits of nature experience: the challenge of linking practice and research.  See Ref. 98 169–82\\n133. Ward ThompsonC, AspinallP, MontarzinoA. 133.\\u20022008.  The childhood factor: adult visits to green places and the significance of childhood experience. Environ. Behav.40:111–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&author=C+Ward+Thompson&author=P+Aspinall&author=A+Montarzino&journal=Environ.+Behav.&volume=40&pages=111-43&publication_year=2008&)\\n134. Ward ThompsonC, RoeJ, AspinallP, MitchellR, ClowA, MillerD. 134.\\u20022012.  More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. Landsc. Urban Plann.105:221–29[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&author=C+Ward+Thompson&author=J+Roe&author=P+Aspinall&author=R+Mitchell&author=A+Clow&author=D+Miller&journal=Landsc.+Urban+Plann.&volume=105&pages=221-29&publication_year=2012&)\\n135. WellsNM, EvansGW. 135.\\u20022003.  Nearby nature—a buffer of life stress among rural children. Environ. Behav.35:311–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&author=NM+Wells&author=GW+Evans&journal=Environ.+Behav.&volume=35&pages=311-30&publication_year=2003&)\\n136. WellsNM, LekiesKS. 136.\\u20022006.  Nature and the life course: pathways from childhood nature experiences to adult environmentalism. Child. Youth Environ.16:1–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&author=NM+Wells&author=KS+Lekies&journal=Child.+Youth+Environ.&volume=16&pages=1-24&publication_year=2006&)\\n137. WhitelawS. 137.\\u20022012.  The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. Crit. Public Health22:427–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&author=S+Whitelaw&journal=Crit.+Public+Health&volume=22&pages=427-40&publication_year=2012&)\\n138. 138.\\u2002WHO (World Health Organ.)1946. Preamble to the Constitution of the World Health Organization as adopted by the International Health Conference.  New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&publication_year=1946&)\\n139. WilsonSJ, LipseyMW. 139.\\u20022000.  Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. Eval. Program Plann.23:1–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&author=SJ+Wilson&author=MW+Lipsey&journal=Eval.+Program+Plann.&volume=23&pages=1-12&publication_year=2000&)\\n140. YooMH, KwonYJ, SonKC, KaysSJ. 140.\\u20022006.  Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. J. Am. Soc. Hort. Sci.131:452–58[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&author=MH+Yoo&author=YJ+Kwon&author=KC+Son&author=SJ+Kays&journal=J.+Am.+Soc.+Hort.+Sci.&volume=131&pages=452-58&publication_year=2006&)\\n141. ZickCD, SmithKR, Kowaleski-JonesL, UnoC, MerrillBJ. 141.\\u20022013.  Harvesting more than vegetables: the potential weight control benefits of community gardening. Am. J. Public Health103:e1–6[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&author=CD+Zick&author=KR+Smith&author=L+Kowaleski-Jones&author=C+Uno&author=BJ+Merrill&journal=Am.+J.+Public+Health&volume=103&pages=e1-6&publication_year=2013&)\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n![Loading](https://www.annualreviews.org/images/jp/spinner.gif)\\n\\nNature and Health\\n\\nAnnual Review of Public Health 35, 207 (2014); [https://doi.org/10.1146/annurev-publhealth-032013-182443](https://doi.org/10.1146/annurev-publhealth-032013-182443 \"undefined - opens in new window/tab\")\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n![Loading](https://www.annualreviews.org/images/jp/spinner.gif)\\n\\nData & Media loading...\\n\\n#### Supplementary Data\\n\\n- Download [**Supplemental References**](https://www.annualreviews.org/deliver/fulltext/publhealth/35/1/pu35_hartig_supmat.pdf?itemId=/content/suppdata/10.1146/annurev-publhealth-032013-182443/1) (PDF)\\n\\n**Audio:** Terry Hartig, Richard Mitchell, Sjerp de Vries, and Howard Frumkin discuss the current state of research on the impact that contact with nature has on individual and population health.\\n\\n\\n\\nSoundCloud Widget\\n\\n\\n### Most Read This Month\\n\\nArticle\\n\\n- - ### [Social Connection as a Public Health Issue: The Evidence and a Systemic Framework for Prioritizing the “Social” in Social Determinants of Health](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052020-110732)\\n\\n\\n\\n\\n\\n    Julianne Holt-Lunstad\\n\\n\\n\\n\\n\\n    pp.193–213\\n    (21)\\n\\n\\n- - ### [Understanding and Responding to Health Literacy as a Social Determinant of Health](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102529)\\n\\n\\n\\n\\n\\n    Don Nutbeam\\xa0and\\n    Jane E. 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href=\"https://www.annualreviews.org/content/journals/publhealth\" class=\"item-meta-data__journal-title-link\">\\nAnnual Review of Public Health\\n</a>\\n</h3>\\n<a href=\"https://www.annualreviews.org/content/journals/publhealth/35/1\" title=\"\" class=\"item-meta-data__issue-title-link\">\\n<h4 class=\"item-meta-data__journal-issue\" title=\"Volume 35, Issue 1\">Volume 35, 2014</h4>\\n</a>\\n</div>\\n<div class=\"hidden-xs article-access-icon-and-access item-meta-data__accreditation\">\\n<h4 class=\"article-type item-meta-data__type\">Review Article</h4>\\n<h4 class=\"article-access item-meta-data__oa\"> \\n<span class=\"accesstext\">Free</span>\\n</h4>\\n</div>\\n<h1 class=\"item-meta-data__item-title\">\\nNature and Health\\n</h1>\\n<ul class=\"list-unstyled article-meta-data item-meta-data__article\"> \\n<li class=\"data-author article-meta-data__item item-meta-data__author\">\\n<span class=\"meta-value authors\"><a href=\"https://www.annualreviews.org/search?value1=Terry+Hartig&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Terry Hartig</a><sup>1</sup>, <a href=\"https://www.annualreviews.org/search?value1=Richard+Mitchell&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Richard Mitchell</a><sup>2</sup>, <a href=\"https://www.annualreviews.org/search?value1=Sjerp+de+Vries&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Sjerp de Vries</a><sup>3</sup>&nbsp;and <a href=\"https://www.annualreviews.org/search?value1=Howard+Frumkin&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Howard Frumkin</a><sup>4</sup></span>\\n</li>\\n<li class=\"data-author article-meta-data__item item-meta-data__author-affiliations\">\\n<div class=\"showhide spacing\">\\n<a id=\"showHideAffiliation\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" role=\"button\" class=\"std-display viewHideAffiliation js-showhide\" aria-expanded=\"false\" aria-controls=\"showHideAffiliationContent\">\\n<span class=\"js-plus\">\\n<i class=\"fa fa-plus-circle\"></i>\\n<span class=\"underline\">\\nView Affiliations\\n</span>\\n</span>\\n<span class=\"js-minus minus\">\\n<i class=\"fa fa-minus-circle\"></i>\\n<span class=\"underline\">\\nHide Affiliations\\n</span>\\n</span>\\n</a>\\n<div id=\"showHideAffiliationContent\" class=\"js-description minus\">\\n<div class=\"affiliation-details\">\\n<!-- -->\\n<span class=\"meta-value affiliations\">\\n<sup>1</sup>Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: <a href=\"mailto:terry.hartig@ibf.uu.se\">terry.hartig@ibf.uu.se</a>\\n</span>\\n<!-- , -->\\n<span class=\"meta-value affiliations\">\\n<sup>2</sup>Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: <a href=\"mailto:Richard.Mitchell@glasgow.ac.uk\">Richard.Mitchell@glasgow.ac.uk</a>\\n</span>\\n<!-- , -->\\n<span class=\"meta-value affiliations\">\\n<sup>3</sup>Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: <a href=\"mailto:sjerp.devries@wur.nl\">sjerp.devries@wur.nl</a>\\n</span>\\n<!-- and -->\\n<span class=\"meta-value affiliations\">\\n<sup>4</sup>School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: <a href=\"mailto:frumkin@uw.edu\">frumkin@uw.edu</a>\\n</span>\\n</div>\\n<div class=\"institutionLinks\">\\n<div class=\"instList\">\\n</div>\\n</div>\\n</div>\\n</div>\\n</li>\\n<li class=\"article-meta-data__item item-meta-data__date-and-doi\">\\n<span class=\"meta-container\">\\nVol. 35:207-228\\n(Volume publication date March 2014)\\n</span>\\n<a href=\"https://doi.org/10.1146/annurev-publhealth-032013-182443\" class=\"externallink meta-container meta-container__value item-meta-data__doi meta-container--doi hidden-xs\">https://doi.org/10.1146/annurev-publhealth-032013-182443</a>\\n</li>\\n<li>\\nFirst published as a Review in Advance on \\nJanuary 02, 2014\\n</li> \\n<li>\\n<div class=\"copyright-info\" dir=\"auto\">\\n© Annual Reviews\\n</div>\\n</li>\\n</ul>\\n</div>\\n</div>\\n \\n\\n<section id=\"tabbedpages\" class=\"tabs icon-image-content\">\\n<div id=\"abstract_content\" class=\" tab-pane abstract tabbedsection\">\\n<div class=\"articleabstract\">\\n<h3 dir=\"auto\">Abstract</h3>\\n<div dir=\"auto\">\\n<div class=\"description\"><p>Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [<a href=\"http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001\" target=\"xrefwindow\">Erratum</a>]</p></div>\\n</div>\\n</div>\\n<ul class=\"list-inline border-right-list article-dates\">\\n</ul> \\n<div class=\"bottom-side-nav\">\\n<span>\\n<strong dir=\"auto\">\\nKeyword(s):\\n</strong>\\n</span>\\n<a href=\"https://www.annualreviews.org/search?value1=%22community+gardens%22&amp;option1=pub_keyword\" title=\"community gardens\">community gardens</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22green+infrastructure%22&amp;option1=pub_keyword\" title=\"green infrastructure\">green infrastructure</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22green+space%22&amp;option1=pub_keyword\" title=\"green space\">green space</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22greenspace%22&amp;option1=pub_keyword\" title=\"greenspace\">greenspace</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22landscape%22&amp;option1=pub_keyword\" title=\"landscape\">landscape</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22parks%22&amp;option1=pub_keyword\" title=\"parks\">parks</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22urban+forests%22&amp;option1=pub_keyword\" title=\"urban forests\">urban forests</a>\\n</div>\\n<div class=\"metaDataBlock\">\\n<div class=\"metaDataBlock__Item\">\\n<h3 class=\"metaDataBlock__title h5\">\\nAssociated Article\\n</h3>\\n<div class=\"consanguinityBlurbContainer\">\\nThere are media items related to this article:\\n</div>\\n<a href=\"https://www.annualreviews.org/content/multimedia/10.1146/do.multimedia.2014.05.13.269\">Nature and Health</a>\\n</div>\\n<div class=\"metaDataBlock__Item\">\\n<h3 class=\"metaDataBlock__title h5\">\\nErratum\\n</h3>\\n<div class=\"consanguinityBlurbContainer\">\\nAn erratum has been published for this article:\\n</div>\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-pu-35-102115-200001\">Nature and Health</a>\\n</div>\\n</div>\\n</div>\\n<div id=\"metrics_content\" class=\"tab-pane metrics hidden-js-div tabbedsection\">\\n<div class=\"itemMetricsLoading\">\\n<img src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<p>Article metrics loading...</p>\\n</div>\\n<div class=\"metricsContainer retrieveMetrics\">\\n<div class=\"hiddenjsdiv metricsItemId\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"hiddenjsdiv metricsPubDate\">2014-03-18</div>\\n<div class=\"hiddenjsdiv metricsEndDate\">2025-07-29</div>\\n<div class=\"hiddenjsdiv\" id=\"graph1Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"hiddenjsdiv\" id=\"graph2Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"hiddenjsdiv \" id=\"graph3Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"metricsDetails\">\\n</div>\\n</div>\\n</div>\\n<div id=\"html_fulltext\" class=\"htmlfulltext hidden-js-div tabbedsection tab-pane active\">\\n<form name=\"pptForm\" class=\"hidden pptForm\" id=\"pptDwnld\" action=\"https://www.annualreviews.org/contentexport/powerpoint/powerpoint.action\" method=\"POST\">\\n\\n\\n\\n\\n\\n\\n\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"pptDownload\">Download as PowerPoint</a>\\n</form>\\n\\n<span class=\"showPPT\" data-showppt=\"true\"></span>\\n<div id=\"itemFullTextId\" class=\"itemFullTextHtml\" data-fulltexturl=\"/deliver/fulltext/publhealth/35/1/annurev-publhealth-032013-182443.html?itemId=/content/journals/10.1146/annurev-publhealth-032013-182443&amp;mimeType=html&amp;fmt=ahah\" data-fulltextunavailablemsg=\"<span dir=&quot;auto&quot;>The full text of this item is not currently available.</span>\" data-fulltextexpandlinktext=\"Toggle display:\" data-hideinlinetablesbydefault=\"false\" data-showreferenceoverlaypopup=\"true\"><!--?xml version=\"1.0\" encoding=\"UTF-8\"?--><div xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" id=\"html-body\">\\n\\n<div id=\"article-level-0-front-and-body\" class=\"article-level-0-front-and-body\">\\n<ul xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"flat fm article-header-metadata\"><li></li><li>ISSN: <span class=\"issn\">0163-7525</span>, Online ISSN: <span class=\"oissn\">1545-2093</span></li><li>DOI: <span class=\"doi\">http://dx.doi.org/10.1146/annurev-publhealth-032013-182443</span></li><li>Volume <span class=\"volume\">35</span>, Issue <span class=\"issue\">1</span>, pages <span class=\"first-page\">207</span>-<span class=\"last-page\">228</span></li><li><span class=\"copyright\">Copyright © 2014 by Annual Reviews. All rights reserved</span>&nbsp;</li></ul><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection article-title-and-authors\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"top-1\" id=\"top-1\">\\n                                &nbsp;\\n                            </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><h1><span class=\"article-title\">Nature and Health</span></h1><ul class=\"flat authors\">Terry Hartig<span class=\"au-label\">\\n                  1\\n               </span>; Richard Mitchell<span class=\"au-label\">\\n                  2\\n               </span>; Sjerp de Vries<span class=\"au-label\">\\n                  3\\n               </span>; Howard Frumkin<span class=\"au-label\">\\n                  4\\n               </span></ul><ul class=\"flat affiliations\">\\n               <sup xmlns:f=\"http://www.example.org/functions\">1</sup>Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: <a href=\"mailto:terry.hartig@ibf.uu.se\">terry.hartig@ibf.uu.se</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">2</sup>Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: <a href=\"mailto:Richard.Mitchell@glasgow.ac.uk\">Richard.Mitchell@glasgow.ac.uk</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">3</sup>Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: <a href=\"mailto:sjerp.devries@wur.nl\">sjerp.devries@wur.nl</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">4</sup>School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: <a href=\"mailto:frumkin@uw.edu\">frumkin@uw.edu</a>\\n            </ul><div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection article-abstract\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"abstract-1\" id=\"abstract-1\">ABSTRACT</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><p>Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [<a target=\"xrefwindow\" href=\"http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001\">Erratum</a>]</p>\\n<span class=\"tl-lowest-section\">Keywords</span><ul class=\"flat keywords\"><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22greenspace%22\">greenspace</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22green%20space%22\">green space</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22green%20infrastructure%22\">green infrastructure</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22landscape%22\">landscape</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22parks%22\">parks</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22urban%20forests%22\">urban forests</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22community%20gardens%22\">community gardens</a></li></ul><div class=\"clearer\">&nbsp;</div></div>\\n\\n\\n\\n\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"introduction-1\" id=\"introduction-1\">INTRODUCTION</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>The public health field views the natural environment with ambivalence. Infectious agents, extreme weather, and geological events regularly sicken, injure, and kill people, often en masse. Yet, people cannot remain healthy without clean air, clean water, food, and other resources provided as “ecosystem services.” Enormous amounts of research inform these contrasting perspectives, describing how the natural environment harms humans, how health depends on the natural environment, and how human impacts on the natural environment rebound on health.</p>\\n\\n         <p>A theme that has become increasingly distinct over recent years concerns the natural environment, or “nature,” perceived, valued, and engaged with as such, particularly in urbanized societies. This research focuses primarily on benefits of contact with nature. Key segments of this literature are young, but central ideas, such as the link between vegetation and air quality, have ancient provenance in the public health field (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B82\" data-original-title=\"\" title=\"\">82</a></span>). Interventions prompted by those ideas, such as urban parks, have long remained in place, presumably because the public has enjoyed them and believed in their salutary value. The recent research tests such beliefs, and it encourages more nuanced theoretical and practical consideration of nature-health relations.</p>\\n\\n         <p>In this article, we review work done in recent decades to better characterize the health benefits of contact with nature. We do not cover this body of work comprehensively, but instead we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations. We touch on clinically oriented work on contact with nature in therapeutic contexts, but we do not discuss benefits of companion animals, which may be taken as representations of nature (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42\" data-original-title=\"\" title=\"\">42</a></span>; however, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B6\" data-original-title=\"\" title=\"\">6</a></span>). Although the core ideas we discuss have a durable legacy in public health practice, the topic has not previously been the focus of an <span class=\"jp-italic\">Annual Review of Public Health</span> article (however, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B44\" data-original-title=\"\" title=\"\">44</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B80\" data-original-title=\"\" title=\"\">80</a></span>).</p>\\n\\n         <p>Below, we examine the concept of nature, consider reasons for the current expansion of research, and provide a “review of reviews.” We then review research on pathways involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"definingnature-1\" id=\"definingnature-1\">DEFINING “NATURE”</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>In an objective sense, “nature” as used here refers to physical features and processes of nonhuman origin that people ordinarily can perceive, including the “living nature” of flora and fauna, together with still and running water, qualities of air and weather, and the landscapes that comprise these and show the influence of geological processes. As such, “nature” overlaps substantially with “natural environment,” an environment with little or no apparent evidence of human presence or intervention, and the two terms have been used interchangeably.</p>\\n\\n         <p>In practice, however, much research does not accept exclusion of the artificial as a basis for defining nature or natural environment. The nature of interest is often situated in built environments, as with indoor plants and street trees. Similarly, allotment (or community) gardens and urban parks comprise natural features, appear natural, and provide opportunities to engage with and follow natural processes, but they are typically designed, constructed, regulated, and maintained. Research has also acknowledged that a person may experience nature as such when viewing natural elements or landscapes from a building or vehicle, in photographs and films, or in virtual reality setups.</p>\\n\\n         <p>The term “urban nature” is instructive. It admits the presence of nature even in those human environments that some consider the antithesis of the natural. Yet, just as it puts the urban and natural together, it also sets them apart. It exemplifies how contacts with nature in an urbanized society occur within a frame of reference shaped in an everyday life oriented in various ways to the society\\'s urban circumstances.</p>\\n\\n         <p>The term “<span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">nature experience</a></span>” is used in some segments of this research to emphasize the subjective perception and evaluation of relevant environmental features (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67\" data-original-title=\"\" title=\"\">67</a></span>). It is, however, not a purely individual subjectivity, nor is it fixed. An individual\\'s experience of nature occurs within and carries further the long-running exchange between the society and its environment (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B48\" data-original-title=\"\" title=\"\">48</a></span>).</p>\\n\\n         <p>In sum, although nature has a wide variety of objective referents, it is also experienced subjectively and is effective as a social construction (for further discussion, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B106\" data-original-title=\"\" title=\"\">106</a></span>). Accordingly, researchers represent nature with diverse physical and spatial variables, encountered in diverse activity contexts. Some also apply measurement, analysis, and design strategies to tap into the subjective experience of the environment. Because opportunities for contact with nature, ways of encountering nature, and experiences of nature vary across sociocultural contexts, researchers have examined variation in outcomes not only among individuals within given populations, but also across populations (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108\" data-original-title=\"\" title=\"\">108</a></span>).</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"somereasonsforthecurrentresearchexpansion-1\" id=\"somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Growth in this field of research is shown clearly by the increase in publications. For example, a search in the Web of Knowledge on just one term, “greenspace and health,” yielded 2 hits for 1990–1999, 34 for 2000–2009, and 45 from 2010 to June 2013.</p>\\n\\n         <p>Why is this expansion occurring? Motives for involvement in the field vary. Some work reflects concerns that urbanization, environmental degradation, and lifestyle changes are quantitatively and qualitatively diminishing possibilities for human contact with nature. For example, dense urban settings, if poorly designed (without accessible green space), may reduce opportunities for stress-reducing nature contact as well as increase exposure to environmental stressors (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B53\" data-original-title=\"\" title=\"\">53</a></span>). Other work considers nature as just one aspect of the physical environment that is potentially beneficial for health. For example, epidemic obesity in some countries has focused attention on sedentary lifestyles and environmental supports for physical activity, including but not limited to nearby parks (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B24\" data-original-title=\"\" title=\"\">24</a></span>). In general, the research aims to inform practical measures that directly or indirectly involve access to nature, including provisions for housing, transportation, and recreation.</p>\\n\\n         <p>Change in thinking about health has also enabled expansion of the research field. With the epidemiologic transition to chronic, lifestyle-related diseases as the major causes of mortality, biopsychosocial explanation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B33\" data-original-title=\"\" title=\"\">33</a></span>) came to compete with the biomedical model, and constructs such as “psychological stress” and “social support” came into widespread use. This development has suited a field populated mainly by people trained in disciplines (e.g., human geography, environmental psychology, social epidemiology) and professions (e.g., outdoor recreation management, landscape architecture, urban forestry) that take interest in how people perceive, interpret, evaluate, and act on the environment. The conception of health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity” (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B138\" data-original-title=\"\" title=\"\">138</a></span>, p. 100) has also been influential for its heuristic value and as a basis for action. By acknowledging the positive, multidimensional character and subjective aspects of health, this concept supports the involvement of a wide variety of actors in efforts to understand and support health, including but not limited to those trained to treat symptoms of ill-health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B132\" data-original-title=\"\" title=\"\">132</a></span>). Research in the field accordingly represents health in many ways, not only with regard to forms of morbidity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86\" data-original-title=\"\" title=\"\">86</a></span>), causes of mortality (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>), and longevity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B119\" data-original-title=\"\" title=\"\">119</a></span>) but also with regard to self-reported health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>) and diverse intermediate outcomes involving different pathways, such as beneficial change in emotional and physiological markers of stress measured during visits to natural areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B3\" data-original-title=\"\" title=\"\">3</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n         <p>Methodological and conceptual advances are also feeding the expansion of the field; old and new topics are being studied with a range of new tools. For example, beliefs about stress-reducing effects of park visits are widespread and long-standing (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B101\" data-original-title=\"\" title=\"\">101</a></span>), but experimental testing of such effects is a relatively recent activity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B52\" data-original-title=\"\" title=\"\">52</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B125\" data-original-title=\"\" title=\"\">125</a></span>). These small-scale experimental demonstrations of pathway plausibility informed the first large-scale epidemiologic studies to assess associations between contact with nature and health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87\" data-original-title=\"\" title=\"\">87</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B93\" data-original-title=\"\" title=\"\">93</a></span>). Those studies used resources and techniques that only recently became available. For example, they used land-use data extracted from satellite images with digital technologies to describe the spatial extent of different kinds of nature accessible to the given individuals and groups in their residential contexts.</p>\\n\\n         <p>Having considered some of the developments in societies, sciences, and professions that have motivated and enabled the recent expansion of this field, we turn now to examine the research in more detail, starting with previous efforts to review the literature.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"reviewofreviews-1\" id=\"reviewofreviews-1\">REVIEW OF REVIEWS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Many review articles on nature and human health have been published in recent years. Assessing them is one means of summarizing the state of the field in terms of what is known and the quality of the research. In April 2013, we undertook a systematic search for reviews. We used Medline and all Web of Knowledge databases to identify peer-reviewed papers, sought nonindexed, non-peer-reviewed (gray) literature, and online reviews via Internet searches, and examined citation lists of already identified reviews. We included review articles or reports relevant to relationships between nature and human health and well-being. Inevitably, because the topic boundaries of nature and health are fuzzy, relevance was sometimes difficult to establish. For example, reviews on environmental correlates of physical activity often include access to urban parks or trails among many other environmental characteristics, but they may not focus on natural environments. We identified 59 relevant reviews at the time of the search (see <a target=\"xrefwindow\" href=\"http://www.annualreviews.org/doi/suppl/10.1146/annurev-publhealth-032013-182443\">\\n               <span class=\"jp-bold\">Supplemental Material</span>\\n            </a>). Of the peer-reviewed articles, most appeared in journals concerned with public health or environmental planning.</p>\\n\\n         <p>The reviews varied considerably in methodology and guiding aims. We observed three broad search-and-synthesis approaches: (<span class=\"jp-italic\">a</span>) narrative reviews, not clearly based on a systematic literature search (<span class=\"jp-italic\">n</span> = 24); (<span class=\"jp-italic\">b</span>) narrative reviews based on a systematic literature search or comprehensive case identification (<span class=\"jp-italic\">n</span> = 13); and (<span class=\"jp-italic\">c</span>) full systematic reviews based on an exhaustive literature search (<span class=\"jp-italic\">n</span> = 22). The reviews tended to have one of four general aims. First, systematic reviews sought to collate and synthesize all evidence for the effects of specified contacts with nature on specified markers of health (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2\" data-original-title=\"\" title=\"\">2</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123\" data-original-title=\"\" title=\"\">123</a></span>). Second, summary reviews often aimed to introduce the field, explain its concepts and the mechanisms by which natural environments might affect health, and then set out some evidence for effects (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54\" data-original-title=\"\" title=\"\">54</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B89\" data-original-title=\"\" title=\"\">89</a></span>). Some were published as gray literature and had been commissioned by governmental or nongovernmental agencies. A third group included what might be labeled “flag-waving” reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42\" data-original-title=\"\" title=\"\">42</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B95\" data-original-title=\"\" title=\"\">95</a></span>). These were aimed at introducing the topic to a new audience and were often relatively brief. Fourth, and fewer in number, were conceptual reviews, methodological reviews, or those proposing new theoretical perspectives (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B8\" data-original-title=\"\" title=\"\">8</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B79\" data-original-title=\"\" title=\"\">79</a></span>).</p>\\n\\n         <p>Reviews also varied by the environments and/or pathways to health discussed. Physical activity had the most dedicated coverage as the focus of 18 reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B65\" data-original-title=\"\" title=\"\">65</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90\" data-original-title=\"\" title=\"\">90</a></span>). Mitigation of poor air quality/urban heat problems and physiologically/psychologically restorative effects also had dedicated reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B12\" data-original-title=\"\" title=\"\">12</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B15\" data-original-title=\"\" title=\"\">15</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19\" data-original-title=\"\" title=\"\">19</a></span>). Twenty-six of the reviews addressed multiple mechanisms. The reviews covered a wide range of natural features and environmental categories, including indoor plants (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B16\" data-original-title=\"\" title=\"\">16</a></span>), urban parks (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90\" data-original-title=\"\" title=\"\">90</a></span>), and forests (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B22\" data-original-title=\"\" title=\"\">22</a></span>), but coverage was uneven. Urban parks were the most commonly considered setting. Two categories of environments were conspicuously underrepresented or absent; rural areas had just one review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B41\" data-original-title=\"\" title=\"\">41</a></span>), and there were no review articles about gardens or allotments or community gardens other than those used for therapeutic purposes. Also, very few reviews focused on population subgroups. Children were the most commonly considered subgroup (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B91\" data-original-title=\"\" title=\"\">91</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B96\" data-original-title=\"\" title=\"\">96</a></span>). We found no reviews dedicated to differences in relationships between nature and health by gender, ethnicity, or socioeconomic position.</p>\\n\\n         <p>Given this variety in method, aims, and focus, we find it interesting that there was strong agreement about the methodological state of the art. Reviews commonly concluded that the field remains dominated by observational study designs. Reviews agreed that too few primary studies have been carried out in a consistent and rigorous way to establish the causality of relationships between contact with nature and health. They agreed, too, that few primary studies have explored how effects may vary by population subgroup, by type of natural environment, or by type of contact with nature. Many reviews commented that consistent and objective measurement of both exposure to nature and health-related outcomes remains elusive.</p>\\n\\n         <p>We identified three weaknesses in the reviews with specific relevance to this field. First, search strategies did not always address the variety of environments or settings that count as “natural.” It is necessary to enter multiple terms into the literature search to avoid missing important work. For example, urban parks may be described by one or more of park, green space, greenspace, green areas, open space, recreational space, natural space, natural environment, etc. Building a review of relevant literature on a search for “green space” or “park” alone, for example, is inadequate.</p>\\n\\n         <p>Second, reviews from individual-based disciplines such as psychology tended to ignore evidence from population-based disciplines such as epidemiology, and vice versa. A great strength of this field is that evidence exists to describe benefits of contact with nature at multiple levels, from laboratory experiments tracking individuals\\' physiological reactions to viewing natural scenes through to studies of differences in population mortality rates between more and less green cities. Each level and scale of study provides important components in understanding what contact with nature can and cannot do for human health.</p>\\n\\n         <p>Third, the variety of health outcomes used in primary studies was not well addressed. When reviews try to synthesize results from outcome measures that are sensitive to contact with nature in different ways, and for different durations, messages become clouded. The pooling of results from heterogeneous outcome measures may be motivated by a lack of multiple studies using consistent measures and study designs. However, failure to appreciate differences among outcome measures leads to mischaracterization of the evidence base. Heterogeneity in outcome measures used in primary studies perhaps explains the relatively small number of reviews that attempted a pooled analysis. The body of reviews consequently tells us little about effect size.</p>\\n\\n         <p>Overall, the reviews generally agreed that beneficial effects from contact with nature do occur and that these effects are plausibly connected to the mechanisms proposed in guiding theory. However, most of the evidence covered by the reviews related to intermediate health-related outcomes such as amount of physical activity, amount of social contacts, changes in physiological activity (e.g., cardiovascular, neuroendocrine, and musculoskeletal changes characteristic of stress reduction), changes in emotional states (e.g., increased happiness, decreased anger), and changes in cognitive capability (e.g., performance on standardized tests of executive attention) rather than to disease states or measures of mortality. The reviews found less evidence that traced full pathways from contact with nature, to measures reflecting the operation of the given mechanism(s), and on to longer-term outcomes. Thus, it is unsurprising that the reviews generally suggest that the evidence is not yet good enough to say when, where, and for whom given effects will occur or how large or long-lasting they will be.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"pathwaysthroughwhichcontactwithnaturerelatestohealth-1\" id=\"pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Contact with nature may affect health via multiple pathways. Pathways that have received relatively large amounts of research attention involve air quality, physical activity, social cohesion, and stress reduction. We describe each of these pathways and indicate some of the complexities involved in drawing conclusions about its role, including variation in association across people, activities, and characteristics of the nature under study. The pathways emphasize different aspects of nature, as physical environment, as setting for (individual and social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously and affect one another, a point to which we return at the end of this section. The different pathways and possibilities for effect modification by individual or contextual variables are illustrated in <span xmlns:f=\"http://www.example.org/functions\" class=\"xref\"><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1\" data-original-title=\"\" title=\"\">\\n               <span class=\"jp-bold\">Figure 1</span>\\n            </a></span>.\\n</p><p xmlns:f=\"http://www.example.org/functions\"></p><div class=\"figure html-fulltext-responsive-figure\" id=\"f1\"><div class=\"caption\"><span class=\"captionLabel\"><span class=\"label\">\\n                  <span class=\"jp-bold\">Figure 1</span>\\u2002\\n               </span></span><span class=\"captionText\"><span>Some pathways through which the natural environment can affect the health of broad segments of populations. Four of the pathways go through contact with nature, whereas two others go directly from the natural environment to air quality and stress, respectively, implying that the natural environment may affect health without an individual or group consciously engaging with nature as such. Associations between variables at the different steps in a given pathway are subject to modification by characteristics of the people or the context. The two-headed arrow between the natural environment and contact with nature acknowledges that these are joined in a reciprocal relationship. The two-headed arrows between the variables designating pathways (air quality, physical activity, social contacts, and stress) also speak to their reciprocal relatedness; however, each may be related with all the others and not only with the one adjacent. Abbreviations: CHD, coronary heart disease; CVD, cardiovascular disease.</span>\\n</span></div><div class=\"image\"><a class=\"media-link\" href=\"https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.gif\" id=\"/content/figure/10.1146/annurev-publhealth-032013-182443.f1\" data-fancybox=\"gallery1\"><img src=\"https://www.annualreviews.org/docserver/ahah/fulltext/publhealth/35/1/pu350207.f1_thmb.gif\" border=\"0\" alt=\"\\n                  Figure 1\\u2002\\n               \"><p style=\"margin-bottom:0;\"><span class=\"figure-duplicate-label\">\\n                  Figure 1\\u2002\\n               <br><br></span>Click to view</p></a><a href=\"https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.ppt?mimeType=application/vnd.ms-powerpoint\">\\n                                        Download as PowerPoint\\n                                </a></div><div class=\"clearer\">&nbsp;</div></div><p></p>\\n         <p></p>\\n<!--splitRids is f1--><!--currentRid is f1--><!--current position is 51--><!--check position is 51-->\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Air Quality</span>\\n\\n            <p>Trees, shrubs, and other vegetation may affect ambient air quality and, through it, human health and well-being. There are both positive and negative impacts. Trees and other vegetation may reduce levels of some pollutants, including gases and particulate matter (PM), but they may also contribute to air pollution by releasing hydrocarbons. Some trees and plants release pollen, aggravating allergies. Finally, trees improve air quality indirectly when they cool urban environments and reduce building energy demand.</p>\\n\\n            <p>Trees and other vegetation can reduce levels of gaseous air pollutants [e.g., ozone, oxides of nitrogen (NOx), oxides of sulfur] and PM (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B37\" data-original-title=\"\" title=\"\">37</a></span>). For gases, the primary mechanisms of action are uptake by leaf stomata, absorption, and adsorption to plant surfaces. PM removal occurs through deposition on leaves and other plant surfaces (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B7\" data-original-title=\"\" title=\"\">7</a></span>). However, most <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">PM</a></span> is resuspended to the atmosphere, washed off by rain, or dropped to the ground (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100\" data-original-title=\"\" title=\"\">100</a></span>). Empirical studies (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B34\" data-original-title=\"\" title=\"\">34</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B113\" data-original-title=\"\" title=\"\">113</a></span>) and modeling studies (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B103\" data-original-title=\"\" title=\"\">103</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B120\" data-original-title=\"\" title=\"\">120</a></span>) suggest that urban tree canopy generally reduces air pollution levels by no more than a few percentage points, and often far less, although some results suggest more efficient removal of PM (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B59\" data-original-title=\"\" title=\"\">59</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B63\" data-original-title=\"\" title=\"\">63</a></span>) and certain volatile organic compounds (VOCs) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B70\" data-original-title=\"\" title=\"\">70</a></span>). Because trees may reduce air movement, especially in restricted spaces such as urban “canyons,” they may impede the localized dispersion of pollutants. Local factors such as the density, species composition, and age of the tree canopy, the concentration of air pollutants, and the length of the in-leaf season influence the extent of pollutant removal.</p>\\n\\n            <p>Plants may also affect indoor air quality—an important observation because people in developed nations may spend as much as 90% of their time indoors. <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">VOCs</a></span> such as benzene and formaldehyde may derive from furniture, carpets, cleaning agents, paint, and other sources. Indoor plants, especially such species as English ivy and spider plant, have been shown to reduce levels of many VOCs (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B81\" data-original-title=\"\" title=\"\">81</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B140\" data-original-title=\"\" title=\"\">140</a></span>). Bacteria in the soil may account for some VOC scavenging attributed to the plants (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B102\" data-original-title=\"\" title=\"\">102</a></span>).</p>\\n\\n            <p>In contrast to pollutant removal, trees can also be a source of hydrocarbons, including isoprene and terpenes, with considerable variation by species (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B9\" data-original-title=\"\" title=\"\">9</a></span>). These biogenic hydrocarbons may function as precursors of ozone and secondary organic aerosols (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B20\" data-original-title=\"\" title=\"\">20</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B74\" data-original-title=\"\" title=\"\">74</a></span>). Modeling studies have assessed the relative contribution of biogenic emissions to pollution levels (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B112\" data-original-title=\"\" title=\"\">112</a></span>). Results vary depending on the species of trees in a canopy, local atmospheric chemistry (especially levels of other precursors, such as NOx), local weather, and other factors.</p>\\n\\n            <p>Trees, grasses, and other plants release pollens, which can aggravate allergies and asthma in susceptible people (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B18\" data-original-title=\"\" title=\"\">18</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B27\" data-original-title=\"\" title=\"\">27</a></span>). The culprits vary with geography but include ragweed, grasses (e.g., Timothy, Bermuda, bluegrass), and trees such as catalpa and walnut. In cities that have favored trees that are heavy pollen producers, the health impact may be especially significant (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19\" data-original-title=\"\" title=\"\">19</a></span>). A study of African American and Dominican children in New York City found a small but significant association between tree canopy extent and asthma and allergic sensitization (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B83\" data-original-title=\"\" title=\"\">83</a></span>). Hence, in some circumstances, the allergenic role of trees may eclipse their ability to improve health by reducing air contaminants.</p>\\n\\n            <p>Vegetation, especially trees, may also indirectly benefit air quality. During warm weather, trees reduce summer air conditioning demand by shading and hence cooling buildings and through the cooling effects of evapotranspiration. This effect, in turn, reduces energy demand, which, in areas served by coal-fired power plants, reduces air pollution derived from coal combustion, though not necessarily at the same location (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B1\" data-original-title=\"\" title=\"\">1</a></span>). During cold weather, the reverse can happen. In a simulation study in Sacramento, trees reduced the need for cooling energy in summer about three times more than they increased the need for warming energy in winter (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B114\" data-original-title=\"\" title=\"\">114</a></span>). The monetary benefits of energy savings related to trees may exceed those of the pollutant removal (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B13\" data-original-title=\"\" title=\"\">13</a></span>).</p>\\n\\n            <p>The overall impact of vegetation on air quality is therefore a function of several processes, operating in opposing directions: hydrocarbon emissions, pollen production, pollutant uptake, and effects on energy demand. Careful selection of species, design of planting configurations with regard to wind, shade, and other impacts, and maintenance of urban vegetation can optimize the beneficial effects on air quality (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B30\" data-original-title=\"\" title=\"\">30</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100\" data-original-title=\"\" title=\"\">100</a></span>).</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Physical Activity</span>\\n\\n            <p>Physical activity promotes physical and mental health across the life span (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B10\" data-original-title=\"\" title=\"\">10</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B61\" data-original-title=\"\" title=\"\">61</a></span>). Recent evidence suggests that the health benefits of increased physical activity are largest among those who were initially doing the least (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B104\" data-original-title=\"\" title=\"\">104</a></span>). The outdoor environment may influence how physically active an individual is by offering suitable spaces for certain types of activities. It may also attract people outdoors because of the experiences it offers. Such outings ordinarily entail some form of physical activity, usually walking.</p>\\n\\n            <p>An important precondition for the use of natural environments for physical activity is individuals\\' (perceived) safety (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B62\" data-original-title=\"\" title=\"\">62</a></span>). Although there are possible negative effects associated with physical activity (e.g., sports injuries) as well as with being in a natural environment (e.g., Lyme disease from tick bites), most of these effects are not specific to physical activity in a natural environment.</p>\\n\\n            <p>Green space is only one part or aspect of the physical environment relevant for physical activity. Which environmental characteristics promote or hamper physical activity may depend strongly on the type of activity at hand (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B5\" data-original-title=\"\" title=\"\">5</a></span>). Three broad activity domains may be identified: work (including study), active transport (walking, cycling), and leisure (recreation, sport). Within the work domain, the greenness of the setting is thought to be of little importance for the amount of physical activity. The same is not true for active transport. Natural features may lead people to favor walking or cycling over other transport modes by making routes to destinations more attractive; however, distance to destination, availability of suitable infrastructure (e.g., sidewalks, bicycle paths), and safety are more important factors (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55\" data-original-title=\"\" title=\"\">55</a></span>). The evidence for association between green space and active transport (walking and/or cycling) is mixed, and this heterogeneity has been well summarized by recent systematic reviews (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B40\" data-original-title=\"\" title=\"\">40</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B78\" data-original-title=\"\" title=\"\">78</a></span>). Reasons for (noncausal) negative associations may be that large amounts of green space tend to go together with (<span class=\"jp-italic\">a</span>) greater distances to destinations, (<span class=\"jp-italic\">b</span>) higher levels of car ownership, and (<span class=\"jp-italic\">c</span>) better availability and lower cost of car parking spaces near one\\'s home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B28\" data-original-title=\"\" title=\"\">28</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55\" data-original-title=\"\" title=\"\">55</a></span>).</p>\\n\\n            <p>The importance of natural environments for fostering physical activity may vary by population subgroup. Children are perhaps the most commonly studied subgroup in this context, but again results are mixed. In one review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B29\" data-original-title=\"\" title=\"\">29</a></span>), ∼40% of the studies in which environmental characteristics were objectively measured showed park access or vegetation to be positively associated with children\\'s physical activity levels; in the other 60% of the studies, no association was observed. A further systematic review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B35\" data-original-title=\"\" title=\"\">35</a></span>) concluded that for (young) children the safety of the environment as perceived by their parents was an important moderating factor. Results from studies of older people are also mixed; two recent systematic reviews arrived at different conclusions. One (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B128\" data-original-title=\"\" title=\"\">128</a></span>) reviewed studies on the physical environment in general and concluded that there was no clear relationship between green space (and most other physical environmental characteristics) and physical activity of older people. The other specifically focused on green space, however, and it observed that seven out of eight studies showed a positive relationship between the greenness of the living environment and physical activity levels of older people (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B17\" data-original-title=\"\" title=\"\">17</a></span>). It also concluded that the perception of safety is an important moderating factor.</p>\\n\\n            <p>Relatively little attention has been paid to the relevance of specific environmental characteristics, such as the type of greenery or the quality of the open space. Results are again mixed. One study (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B46\" data-original-title=\"\" title=\"\">46</a></span>) concluded that very good access to large, very attractive public open space was associated with higher levels of walking. Another (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B56\" data-original-title=\"\" title=\"\">56</a></span>) by contrast observed no relationship between access to large, high-quality urban green spaces and recreational physical activity. A third study (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>) observed a relationship of quality (but not quantity) of streetscape greenery with “green” activity, though not with total physical activity. Finally, recent results suggest that community gardening is associated with a lower body mass index (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B141\" data-original-title=\"\" title=\"\">141</a></span>).</p>\\n\\n            <p>Given that physical activity is assumed to be an important pathway joining nature with health, we find it surprising that few studies have formally investigated the extent to which any association between nature and health might be mediated by physical activity levels. Of four studies done (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B88\" data-original-title=\"\" title=\"\">88</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B109\" data-original-title=\"\" title=\"\">109</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>), only one (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>) concluded that physical activity (more specifically recreational walking) was indeed an important mediator.</p>\\n\\n            <p>Finally, we note that most of the studies referred to in this overview have been cross-sectional in nature. Hence, the direction of observed relationships remains open to alternative explanations. For example, some people may choose a highly car-dependent (and presumably more green) living environment because they are not inclined to be physically active anyway (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B32\" data-original-title=\"\" title=\"\">32</a></span>).</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Social Cohesion</span>\\n\\n            <p>Much as for physical activity, abundant research has documented positive associations between social relationships and health and well-being (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B57\" data-original-title=\"\" title=\"\">57</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B97\" data-original-title=\"\" title=\"\">97</a></span>). Such salutary associations have also been observed for positive relationships specifically within the neighborhood (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110\" data-original-title=\"\" title=\"\">110</a></span>). A variety of terms have been introduced to reflect the potential value of social relationships in this context, including social capital, social support, social cohesion, and sense of community. Although these terms are often used interchangeably (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4\" data-original-title=\"\" title=\"\">4</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110\" data-original-title=\"\" title=\"\">110</a></span>), we draw a distinction here between social capital and social cohesion. Social capital comprises primarily those resources available to an individual through his or her social connections, which may be activated in times of need. In contrast, social cohesion refers to shared norms and values, the existence of positive and friendly relationships, and feelings of being accepted and belonging (cf. 36). We prefer to use the term social cohesion here because it is more a characteristic of neighborhoods than of individuals (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4\" data-original-title=\"\" title=\"\">4</a></span>) and so more likely to be influenced by physical characteristics of the neighborhood, such as the availability and quality of green space and natural elements.</p>\\n\\n            <p>Unlike physical activity, the environmental correlates of social cohesion have received little research attention thus far. Generally, the few studies available suggest a positive relationship between social cohesion and natural environments (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B38\" data-original-title=\"\" title=\"\">38</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85\" data-original-title=\"\" title=\"\">85</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>). Sugiyama et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>), for example, found perceived social coherence and local social interaction to be associated with the perceived greenness of the neighborhood. De Vries et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>) found an association between streetscape greenery and perceived social cohesion at the neighborhood scale, both for the quantity and, even more strongly, for the quality of greenery.</p>\\n\\n            <p>Social cohesion within a neighborhood does not lend itself to experimental research, which makes it difficult to determine whether relations with environmental features are causal. A few studies have, however, taken advantage of circumstances that likened a natural experiment. Researchers in Chicago (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77\" data-original-title=\"\" title=\"\">77</a></span>) took advantage of quasi-random assignment of public housing residents to dwelling units in architecturally similar high-rise buildings with varying amounts of vegetation outside. They found a positive association between the presence of trees and grass on the use of common spaces and informal social contact with neighbors. Moreover, the relationship between greenery and social contacts appeared to be mediated by the use of the common spaces.</p>\\n\\n            <p>The research in Chicago (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77\" data-original-title=\"\" title=\"\">77</a></span>) also showed that social contact was positively related to one\\'s sense of safety. Subsequent studies showed that residents with more trees and grass around their buildings displayed less aggressive behavior, and their buildings were associated with fewer crimes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75\" data-original-title=\"\" title=\"\">75</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76\" data-original-title=\"\" title=\"\">76</a></span>). More recent research suggests similar positive effects of greening vacant lots, especially a reduction in gun assaults and disorderly conduct (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14\" data-original-title=\"\" title=\"\">14</a></span>).</p>\\n\\n            <p>Other attributes of the environment may moderate any association between natural features and social cohesion. Arguably, local parks must be well maintained and provide attractive recreational facilities to realize their full potential in developing social ties (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B71\" data-original-title=\"\" title=\"\">71</a></span>). Although green space generally is positively associated with feelings of safety, in dense urban areas enclosed green spaces may reduce such feelings (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B84\" data-original-title=\"\" title=\"\">84</a></span>). Similarly, trees in the public realm have been associated with reduced crime rates, but small trees on private lots have been associated with increased crime rates, presumably because these trees make it more difficult to observe criminal activity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B31\" data-original-title=\"\" title=\"\">31</a></span>). Some natural settings, such as community gardens, incorporate social ties almost by definition. In one study, older allotment gardeners reported having more contacts with friends and felt less lonely than did nongardening neighbors in the same age category (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B131\" data-original-title=\"\" title=\"\">131</a></span>).</p>\\n\\n            <p>The question remains whether social cohesion, sense of safety, aggressive behavior, and crime rates mediate an eventual relationship between contact with nature and health. Results from a few cross-sectional studies bear on this point. One found that social cohesion partially mediated the relationship between perceived neighborhood greenness and mental health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>). Another concluded that feelings of loneliness and perceived shortage of social support partially mediated the relationship between the amount of green space within one kilometer and overall health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85\" data-original-title=\"\" title=\"\">85</a></span>). A third found that social cohesion mediated relationships between quantity and quality of streetscape greenery and both overall health and mental health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>). In contrast, Francis et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B39\" data-original-title=\"\" title=\"\">39</a></span>) found neither sense of community nor social support to be an important mediator of the relationship between the quality of public open space and mental health. No studies were identified on mediation by aggressive behavior, fear of crime, and/or crime rates.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Stress Reduction</span>\\n\\n            <p>By helping people maintain adaptive resources needed to meet the demands of life, nature can reduce risk of illnesses involving chronic stress, as well as promote a range of intermediate outcomes such as increased subjective well-being. It can do so in two general ways. First, natural areas and features can reduce exposure to challenging environmental conditions by increasing distance to stressors and/or decreasing their perceptual salience. For example, green spaces between residences and heavily trafficked roads can reduce occupant noise annoyance (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B99\" data-original-title=\"\" title=\"\">99</a></span>), vegetation can conceal displeasing structures (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B115\" data-original-title=\"\" title=\"\">115</a></span>), and landscaping around housing can help residents maintain privacy and avoid feelings of crowding (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B23\" data-original-title=\"\" title=\"\">23</a></span>).</p>\\n\\n            <p>Second, nature can help people restore their adaptive resources. Escape from physical and social stressors has long been described as an important motive for recreation in natural areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B58\" data-original-title=\"\" title=\"\">58</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72\" data-original-title=\"\" title=\"\">72</a></span>). Nature\\'s restorative quality does not, however, depend only on an absence of stressors; its restorative quality is also defined in positive terms. Another persistent motive for outdoor recreation has been appreciation of nature—for beautiful scenery, symbolic qualities, and other valued attributes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72\" data-original-title=\"\" title=\"\">72</a></span>). Push and pull motives also work in tandem in contexts other than outdoor recreation, notably the residential context. For example, residential location decisions commonly reflect efforts to both minimize stressful exposures and enhance access to restorative amenities, including green (or blue, i.e., water) areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B51\" data-original-title=\"\" title=\"\">51</a></span>).</p>\\n\\n            <p>This motive combination appears in two theories about how nature can promote more rapid and complete restoration than other environments can. They offer contrasting views on how restoration can proceed once a person has gained psychological distance from threats and other demands. Psychoevolutionary theory holds that, for a person experiencing acute stress, nature contact can very rapidly evoke positive affect, which in turn blocks negative thoughts and feelings and fosters reduction of physiological activation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B126\" data-original-title=\"\" title=\"\">126</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B127\" data-original-title=\"\" title=\"\">127</a></span>). Evolution purportedly conserved this functional aesthetic response because more rapid recovery from acute stress would have helped proto-humans better prepare for the next survival task. In contrast, attention restoration theory holds that effortless attention engaged by intrinsically interesting aspects of nature enables rest for a fatigued neurocognitive inhibitory mechanism engaged when willfully directing attention (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67\" data-original-title=\"\" title=\"\">67</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68\" data-original-title=\"\" title=\"\">68</a></span>). People must inhibit task-irrelevant stimuli as they direct their attention at work and in many other circumstances. Fatigue of this directed attention capability occurs commonly, undermines effective action, and can increase susceptibility to stress (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68\" data-original-title=\"\" title=\"\">68</a></span>).</p>\\n\\n            <p>Informed by one or both of these theories, true and quasi-experiments done in laboratory and field settings have assessed diverse affective, cognitive, and physiological effects of more and less natural comparison conditions, realized over varying but generally brief time spans after a naturalistic or experimental induction of a need for restoration. Published studies generally report some restorative advantage of nature, and by 2004, reviewers had judged the evidence for restorative effects of nature to be strong (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54\" data-original-title=\"\" title=\"\">54</a></span>). More recently, methodological heterogeneity led other reviewers (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B11\" data-original-title=\"\" title=\"\">11</a></span>) to include only 3–6 studies in quantitative syntheses for each of several outcomes. They concluded, nonetheless, that the available studies provided reliable evidence of reductions in self-reported anger, fatigue, anxiety, and sadness and an increase in feelings of energy. They also found tentative evidence of enhanced attention. Conclusions regarding physiological effects were limited by a lack of studies that had the desired design features. Studies done since that 2010 review have further expanded the body of experimental evidence in several directions: additional comparison conditions [e.g., more or less open vegetation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B45\" data-original-title=\"\" title=\"\">45</a></span>); encountered in different ways, e.g., work site desktop relaxation packages (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B60\" data-original-title=\"\" title=\"\">60</a></span>)], alone or in company (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B64\" data-original-title=\"\" title=\"\">64</a></span>), and in additional subpopulations [e.g., children with attention deficit disorder (ADD) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121\" data-original-title=\"\" title=\"\">121</a></span>), with effects registered using additional measurement techniques (e.g., cortisol; <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B129\" data-original-title=\"\" title=\"\">129</a></span>)].</p>\\n\\n            <p>Other research assumes cumulative health effects of more effective restoration on many occasions over time. That work is bolstered by studies that situate repeated contact with nature into an ongoing process of self-regulation. Such studies recognize that some people learn that natural settings are more likely than other settings to be restorative. Over time, they apply this knowledge to better manage adaptive resources such as attentional capacity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B69\" data-original-title=\"\" title=\"\">69</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B73\" data-original-title=\"\" title=\"\">73</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B116\" data-original-title=\"\" title=\"\">116</a></span>). When and how that learning begins remain understudied, but childhood experience appears influential for environmental attitudes measured in later life (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B133\" data-original-title=\"\" title=\"\">133</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B136\" data-original-title=\"\" title=\"\">136</a></span>). Some research does suggest that restorative childhood contact with nature can cumulatively provide benefits with far-reaching developmental significance. Contact with nature may for example improve attentional function in children with <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">ADD</a></span> (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121\" data-original-title=\"\" title=\"\">121</a></span>) and enhance self-discipline in children without a diagnosis (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B122\" data-original-title=\"\" title=\"\">122</a></span>).</p>\\n\\n            <p>Observational studies commonly cite nature\\'s cumulative stress-reducing or restorative effects as one plausible pathway by which residential green space might affect perceived health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87\" data-original-title=\"\" title=\"\">87</a></span>), diverse forms of morbidity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86\" data-original-title=\"\" title=\"\">86</a></span>), and death from circulatory disease and other causes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>). To date, however, most studies with individual data have not directly addressed a stress-reduction pathway owing to a lack of measures suitable for assessing mediation. One early quasi-experiment did however assess mediation with reference to attention restoration (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76\" data-original-title=\"\" title=\"\">76</a></span>), and some recent surveys have begun to address this issue with self-report measures (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B117\" data-original-title=\"\" title=\"\">117</a></span>). Another study has considered variation in the level of cortisol as a biomarker of chronic stress in members of a community sample living in more or less green circumstances (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B134\" data-original-title=\"\" title=\"\">134</a></span>); such a measure could serve tests of mediation of the effect of nature on stress-related illnesses.</p>\\n\\n            <p>Some studies have framed nature as a stress buffer, which has entailed estimating the interactive effect of stressful demands and access to nature on some health outcome. Several studies focused on nature in the residential context are illustrative. In a study done in rural New York state, conflicts at school experienced during the preceding three months were less strongly associated with psychological distress in children who had more nature in and around the home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B135\" data-original-title=\"\" title=\"\">135</a></span>). In a Dutch study, the relationships between stressful life events in the previous three months and both health complaints and perceived general health were weaker among those with more green space within 3 km of the home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B130\" data-original-title=\"\" title=\"\">130</a></span>). In an ecological study covering the population of England, high income deprivation had a weaker association with all-cause and circulatory disease mortality among people living in areas with relatively large amounts of green space (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>).</p>\\n\\n            <p>In sum, substantial evidence speaks to the potential benefits of contact with nature for avoiding health problems traceable to chronic stress and attentional fatigue; however, the greater part of this evidence concerns the short-term restorative benefits of single encounters with or experiences in nature.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">The Pathways Intertwine</span>\\n\\n            <p>Discussions of air quality, physical activity, social cohesion, and stress-reduction pathways emphasize different aspects of nature: as physical environment, as setting for (individual or social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously, as illustrated in <span xmlns:f=\"http://www.example.org/functions\" class=\"xref\"><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1\" data-original-title=\"\" title=\"\">\\n                  <span class=\"jp-bold\">Figure 1</span>\\n               </a></span>.</p>\\n<!--splitRids is f1--><!--currentRid is f1--><!--current position is 167--><!--check position is 51-->\\n            <p>Most individual studies have focused on one particular pathway from nature to health, but some research has addressed combinations involving two or more of them. Much of this work has recognized links between physical activity and stress reduction. People commonly engage in physical activity not only or even primarily because it will serve their health in the long run, but also because it helps them to feel good in the short run, sometimes by reducing tension and stress. Conversely, people who want to enter a natural environment for restoration ordinarily must engage in some form of physical activity to do so. Accordingly, experiments have found “green exercise” more psychologically beneficial than the same exercise in settings with relatively little nature (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B92\" data-original-title=\"\" title=\"\">92</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B105\" data-original-title=\"\" title=\"\">105</a></span>). Thus, being active in natural settings may yield health benefits over and above the benefits of physical activity in other environments (for a meta-analysis, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123\" data-original-title=\"\" title=\"\">123</a></span>). Conversely, a person walking or running along city streets may have to endure aversive conditions that reduce the benefits of the activity itself (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n            <p>Multiple pathways may be purposefully combined in cultural practices that regularly bring people in contact with nature. For example, community gardening may promote social contacts during moderate physical activity that also supports restoration from stress associated with work or other demands. The Japanese practice of Shinrin-yoku, or forest-bathing, involves beliefs about the salutary values of certain substances in the air, and it entails behaviors that ordinarily promote stress reduction (e.g., distancing oneself from everyday demands, adopting a meditative stance) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B124\" data-original-title=\"\" title=\"\">124</a></span>).</p>\\n\\n            <p>Some cultural practices that engage multiple pathways may however not be salutary for all population subgroups. For example, in some countries, many households maintain a simple, inexpensive leisure home in the countryside, to which family members ordinarily travel together during vacation periods; however, as a domestic setting, the leisure home may also impose unwanted demands and on some household members more than others. Swedish research found that, after several years of follow-up, employed men who owned a leisure home had lower odds of retiring early for health reasons (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B50\" data-original-title=\"\" title=\"\">50</a></span>); however, this prospective association did not hold for women. Indeed, among highly educated and highly paid women, the likelihood of early retirement for health reasons was greater if they also owned a leisure home. Other studies have also indicated a potential gender difference in the nature-health relationship (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B107\" data-original-title=\"\" title=\"\">107</a></span>).</p>\\n\\n         </div>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"methodologicalchallenges-1\" id=\"methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>In addition to the usual methodological concerns in experimental and epidemiologic research, we must tackle a litany of specific methodological challenges if we are to develop our understanding of the degree to which, how, and under which circumstances contact with nature affects human health and well-being.</p>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Measuring Exposure to Nature</span>\\n\\n            <p>Contact with nature challenges definition and control in field and laboratory experiments, and it is even more difficult to assess in free-living populations. Studies at population level typically assess exposure in one of three ways: assessments of exposure by how much nature there is in, or close to, the participants\\' area of residence; survey questions about how much time, and/or how often, people visit natural environments; and objective measures of contact via GPS (global positioning systems) technology. Each method has problems; that people live near natural spaces, report visiting them, or position themselves spatially within them does not mean that individuals actually have had contact with nature in a way that affects their health. None of these measures includes visual contact with nature from, for example, windows at home or in the workplace, which may also have beneficial effects (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B66\" data-original-title=\"\" title=\"\">66</a></span>). Furthermore, these measures typically miss fine details of exposure that may be important, such as the timing of exposure (e.g., for many environmental exposures, specific windows of vulnerability exist across the life span), the seasonality of exposure (e.g., the role of deciduous trees being in leaf), the quality of the nature (e.g., area in mature trees versus immature trees versus shrubs versus lawn), and the duration of exposure.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Measuring Outcomes</span>\\n\\n            <p>The other end of the equation between natural environment and health is the assessment of health itself. Plausible health impacts are varied and multiple, positive and negative, psychological and physiological, short term and/or long term. This plurality means many different health measures can be used, which, in turn, makes it difficult to achieve a coherent body of research. There is a particular challenge in bridging what we know about effects of contact with nature from small-scale, shorter-term experimental studies and what we might expect to observe as effects in the real world at the population level. For example, it is difficult to determine what the fall in blood pressure on viewing nature, established in experimental studies, might mean for rates of heart disease among regular visitors to national parks. There is no simple solution to this challenge and no one clearly superior set of instruments or measurements that are suited to use in all settings and studies.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Understanding Mechanisms</span>\\n\\n            <p>Understanding how any relationship between nature and health happens can aid interventions that promote possible benefits. It is also vital for specifying who might benefit most and least from the relationship. The challenge is that, as we have noted, the mechanisms by which nature might affect health are multiple and synergistic. They likely vary in significance within a single contact with nature, between contacts, across the life course, between population subgroups, between environment types and across cultures. Understandings of mechanisms being developed in the relatively controlled conditions of experiments should eventually help epidemiologists to form better hypotheses about the variation in associations they could expect at a population level.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Demonstrating Causality at a Population Level</span>\\n\\n            <p>Positive, short-term effects of contact with nature on affect, cognition, and physiology have been reasonably well established in laboratory and field experiments. However, cross-sectional designs still dominate studies of long-term health outcomes measured in populations. The vulnerability of these designs to confounding and reverse causality is a particular problem. The likelihood of contact with nature is strongly patterned by socioeconomic, ethnic, age, and cultural characteristics, which are, themselves, linked to health. Richardson et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108\" data-original-title=\"\" title=\"\">108</a></span>) provide a fine example of the potential for confounding factors to obscure relationships between green space and health at a population level.</p>\\n\\n            <p>Both experimental and longitudinal observational designs are potential routes to better evidence for a causal relationship among free-living populations. For studies of nature and health, however, both types of study impose specific challenges. Experimental studies at a population level are hard to perform. Manipulating environments or people is difficult and expensive. Scientists often must rely on public agencies or authorities to fund and deliver environmental changes, such as the creation of a new park or trail. It can also be difficult to establish and maintain control sites or populations, and opportunities to randomize the receipt of environmental interventions to different communities are rare. Useful results have emerged from quasi-experimental and before-after studies that capture some of the attributes of true experiments (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14\" data-original-title=\"\" title=\"\">14</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75\" data-original-title=\"\" title=\"\">75</a></span>). The timescale for effects is also often a constraint. Funding to follow-up intervention studies is rarely longer than 3–5 years, but effects at a population level (perhaps even intergenerational effects) may take longer to establish.</p>\\n\\n            <p>Research on nature and health has been undertaken within different scientific paradigms. Attitudes toward the level of proof for an association, indeed attitudes toward the very idea of “proof,” vary between paradigms and are contested within them. Biomedical research, for example, often places great emphasis on low <span class=\"jp-italic\">p</span>-value thresholds for acceptance of an association. Frumkin (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B43\" data-original-title=\"\" title=\"\">43</a></span>) recently suggested, however, that the application of stringent <span class=\"jp-italic\">p</span>-value thresholds needs careful and explicit reconsideration in studies of nature and health. Moving from partial evidence to evidence-based recommendations regarding nature contact is a thorny problem.</p>\\n\\n            <p>For their part, existing panel or cohort studies that have good measures of health and well-being rarely also carry detailed information on contact with natural environments because this topic is relatively new to public health and epidemiology. Moreover, data sets that can also capture the change in or development of natural environments over time are rare.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Effect Size</span>\\n\\n            <p>Evidence suggests that contact with nature has a small effect on health and well-being in comparison to structural characteristics such as income, employment, or education, and behavioral characteristics such as smoking. The signal-to-noise ratio in population-level studies is often small, and these studies need to be well designed and of sufficient power to identify any benefits. This does not mean that such studies are not worth doing, however; a small beneficial effect on a large number of people is a large contribution to population health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B111\" data-original-title=\"\" title=\"\">111</a></span>).</p>\\n\\n         </div>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"prioritiesforfurtherresearch-1\" id=\"prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Throughout this review we have identified issues that warrant further research, and in the previous section we have identified methodological challenges that must be met. Here, we try to highlight some specific priorities for the field.</p>\\n\\n         <p>First, we see a need to seek, create, and take opportunities for population-level experimental studies when they arise, within an understanding of their limits. Doing so will assist in demonstrating the degree to which nature-health relations have meaning for population health. We should also work to incorporate questions about contact with nature in ongoing longitudinal studies and ensure that high-quality data on change in type, quality, and availability of nature are maintained into the future and created retrospectively for the past. These additions would permit studies consistent with both cohort and life-course perspectives on relationships between nature and health.</p>\\n\\n         <p>Second, research on which types of nature are relatively effective for particular outcomes, and which qualities of those types are highly relevant, may be more fruitful when guided by theoretical ideas about why a particular type or quality of that type is likely to contribute to a particular pathway to health. Natural elements that are effective in improving air quality are not necessarily the same as those best suited to improving social cohesion in a neighborhood or to promoting psychological restoration.</p>\\n\\n         <p>Third, with specific regard to the stress pathway, much work remains to be done to rigorously assess theoretical claims regarding the components of experience that sustain attention restoration and stress recovery. To what extent, for example, are beneficial effects dependent on gaining psychological distance from stressful demands versus engaging with positive aspects of the nature encountered? This work will be aided by, among other things, further development of measures of perceived restorative quality in environments, and experimentation that more directly addresses the interplay of stress recovery, attention restoration, and other possible processes through which adaptive resources become renewed (cf. <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n         <p>Fourth, if we acknowledge the competing priorities for funding and investment in health and health care, some research on nature and health might gain from a health economics perspective. If contact with nature is cost-effective as a means to protect and improve population health, it should be resourced and prioritized in preference to other approaches. Arguably, doing so requires knowledge not only about the economic significance of the health benefits generated, but also about the “doses” of nature needed to generate those benefits at the lowest possible cost. Discussions of dose, however, can entail a variety of problems, such as trivialization of contact with nature through neglect of long-term consequences of particularly powerful forms of contact (e.g., life-changing wilderness experiences). The dose metaphor therefore must be handled with care (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B137\" data-original-title=\"\" title=\"\">137</a></span>). As with other health-related issues, economic analyses must extend beyond health impacts to account for other benefits. For instance, an urban park may offer not only health benefits, but also benefits such as stormwater management and enhanced property values.</p>\\n\\n         <p>Finally, variety between population subgroups in access to, use of, and responses to nature remains persistently underexplored. Spatial, social, economic, racial, cultural, and demographic differences in relationships between nature and health seem highly probable. It may be that relationships between nature and health are implicated in exacerbating or mitigating health inequalities between subgroups, for example. This potential should be thoroughly explored.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"concludingcomments-1\" id=\"concludingcomments-1\">CONCLUDING COMMENTS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>We have provided for a general public health audience an overview of research on how contact with nature relates to health in urbanized societies. We have not covered this body of work comprehensively, but instead have focused on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations, such as the availability of urban parks, the amount of green space in and near residential areas, and the preservation of peri-urban natural areas. Given our public health orientation, we have focused on the conditions of everyday life for the greatest part of the populations of interest. We consequently have hardly touched on the extensive literatures on wilderness experience (for reviews, see 72, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B139\" data-original-title=\"\" title=\"\">139</a></span>) and contact with nature in the treatment and management of disability and illnesses such as depression (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B47\" data-original-title=\"\" title=\"\">47</a></span>) and breast cancer (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B21\" data-original-title=\"\" title=\"\">21</a></span>; see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2\" data-original-title=\"\" title=\"\">2</a></span> for a review).</p>\\n\\n         <p>Despite such significant omissions, we trust readers will take away an appreciation not only of the diversity and complexity in forms of nature contact and potential benefits thereof, but also of the many challenges faced in characterizing those contacts and benefits. Taken together, the research reviewed does indicate that contact with nature can promote health. The evidence for some benefits, such as short-term restorative effects, is already quite strong. That said, nature contact should not be assumed always and automatically to be good for health; we have more to learn about for whom, when, how, and in which contexts it offers benefits.</p>\\n\\n         <p>Much also remains to be done to help those responsible for environmental policy, design, and management to make realistic assessments of what nature can and cannot do in their domain of activity. Part of this task involves explaining how health benefits might coincide (versus conflict with) other benefits, such as better stormwater management, species preservation, and carbon sequestration. If a particular form of nature contact shows small health benefits, interventions to promote it may still justify public investment if the health benefits combine with other benefits.</p>\\n\\n         <p>In closing, we recognize that many people speak of human-nature relations in moral/ethical and spiritual/religious terms with a view toward preservation of the natural environment. We respect such views. Our observations here regarding human health values should not be understood as the only or even the main bases for arguments regarding protection of habitats, species, and ecosystem integrity.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n   \\n</div>\\n\\n<div id=\"article-level-0-back\">\\n<div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"disclosurestatement-1\" id=\"disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><p>H. Frumkin is a board member of the US Green Building Council and of the Children and Nature Network. R. Mitchell supervises a doctoral student funded by the UK Forestry Commission and has received research funding from the Forestry Commission in the recent past. The other authors are not aware of any affiliations, memberships, funding, or financial holdings that might be perceived as affecting the objectivity of this review.</p>\\n<div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"acknowledgments-1\" id=\"acknowledgments-1\">ACKNOWLEDGMENTS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><div>\\n            \\n<span class=\"tl-lowest-section\">\\n               <span class=\"jp-small\">acknowledgments</span>\\n            </span>\\n\\n            <p>R. Mitchell was funded under a European Research Council grant (ERC-2010-StG Grant 263501).</p>\\n\\n         </div>\\n<div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"literaturecited-1\" id=\"literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><span class=\"references\"><ol id=\"articlereference\" class=\"articlereference-vancouver\">\\n<li class=\"refbody\" id=\"B1\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Akbari</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Kurn</span> <span class=\"reference-given-names\">DM</span>, <span class=\"reference-surname\">Bretz</span> <span class=\"reference-given-names\">SE</span>, <span class=\"reference-surname\">Hanford</span> <span class=\"reference-given-names\">JW</span>. <span class=\"citation-label\">1.\\u2002</span> <span class=\"reference-year\">1997</span>. <span class=\"reference-article-title\"> Peak power and cooling energy savings of shade trees. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Energy Build.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">139–</span><span class=\"reference-lpage\">48</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&amp;author=H+Akbari&amp;author=DM+Kurn&amp;author=SE+Bretz&amp;author=JW+Hanford&amp;journal=Energy+Build.&amp;volume=25&amp;pages=139-48&amp;publication_year=1997&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B2\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Annerstedt</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Währborg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">2.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Nature-assisted therapy: systematic review of controlled and observational studies. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">39</span>:<span class=\"reference-fpage\">371–</span><span class=\"reference-lpage\">88</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&amp;author=M+Annerstedt&amp;author=P+W%C3%A4hrborg&amp;journal=Scand.+J.+Public+Health&amp;volume=39&amp;pages=371-88&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B3\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">3.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3947–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&amp;author=J+Barton&amp;author=J+Pretty&amp;journal=Environ.+Sci.+Technol.&amp;volume=44&amp;pages=3947-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B4\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Baum</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Ziersch</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Zhang</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Osborne</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">4.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">925–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&amp;author=FE+Baum&amp;author=AM+Ziersch&amp;author=G+Zhang&amp;author=K+Osborne&amp;journal=Health+Place&amp;volume=15&amp;pages=925-34&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B5\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bauman</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Reis</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">JC</span>, <span class=\"reference-surname\">Loos</span> <span class=\"reference-given-names\">RJ</span>, <span class=\"reference-surname\">Martin</span> <span class=\"reference-given-names\">BW</span>. <span class=\"citation-label\">5.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Correlates of physical activity: Why are some people physically active and others not?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">380</span>:<span class=\"reference-fpage\">258–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&amp;author=AE+Bauman&amp;author=RS+Reis&amp;author=JF+Sallis&amp;author=JC+Wells&amp;author=RJ+Loos&amp;author=BW+Martin&amp;journal=Lancet&amp;volume=380&amp;pages=258-71&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B6\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beck</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Meyers</span> <span class=\"reference-given-names\">NM</span>. <span class=\"citation-label\">6.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Health enhancement and companion animal ownership. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">247–</span><span class=\"reference-lpage\">57</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&amp;author=AM+Beck&amp;author=NM+Meyers&amp;journal=Annu.+Rev.+Public+Health&amp;volume=17&amp;pages=247-57&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B7\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beckett</span> <span class=\"reference-given-names\">KP</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">PH</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">7.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> The capture of particulate pollution by trees at five contrasting urban sites. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Arboric. J.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">209–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&amp;author=KP+Beckett&amp;author=PH+Freer-Smith&amp;author=G+Taylor&amp;journal=Arboric.+J.&amp;volume=24&amp;pages=209-30&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B8\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bedimo-Rung</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Mowen</span> <span class=\"reference-given-names\">AJ</span>, <span class=\"reference-surname\">Cohen</span> <span class=\"reference-given-names\">DA</span>. <span class=\"citation-label\">8.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The significance of parks to physical activity and public health: a conceptual model. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">159–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&amp;author=AL+Bedimo-Rung&amp;author=AJ+Mowen&amp;author=DA+Cohen&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=159-68&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B9\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Benjamin</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Winer</span> <span class=\"reference-given-names\">AM</span>. <span class=\"citation-label\">9.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Estimating the ozone-forming potential of urban trees and shrubs. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">53–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&amp;author=MT+Benjamin&amp;author=AM+Winer&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=53-68&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B10\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bize</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Johnson</span> <span class=\"reference-given-names\">JA</span>, <span class=\"reference-surname\">Plotnikoff</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">10.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Physical activity level and health-related quality of life in the general adult population: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Prev. Med.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">15</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&amp;author=R+Bize&amp;author=JA+Johnson&amp;author=RC+Plotnikoff&amp;journal=Prev.+Med.&amp;volume=45&amp;pages=401-15&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B11\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">LM</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">11.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> A systematic review of evidence for the added benefits to health of exposure to natural environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">10</span>:<span class=\"reference-fpage\">456</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&amp;author=DE+Bowler&amp;author=LM+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=BMC+Public+Health&amp;volume=10&amp;pages=456&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B12\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">12.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Urban greening to cool towns and cities: a systematic review of the empirical evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">97</span>:<span class=\"reference-fpage\">147–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&amp;author=DE+Bowler&amp;author=L+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=Landsc.+Urban+Plann.&amp;volume=97&amp;pages=147-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B13\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brack</span> <span class=\"reference-given-names\">CL</span>. <span class=\"citation-label\">13.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollution mitigation and carbon sequestration by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">116</span>:<span class=\"reference-fpage\">S195–</span><span class=\"reference-lpage\">200</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&amp;author=CL+Brack&amp;journal=Environ.+Pollut.&amp;volume=116&amp;pages=S195-200&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B14\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Branas</span> <span class=\"reference-given-names\">CC</span>, <span class=\"reference-surname\">Cheney</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">MacDonald</span> <span class=\"reference-given-names\">JM</span>, <span class=\"reference-surname\">Tam</span> <span class=\"reference-given-names\">VW</span>, <span class=\"reference-surname\">Jackson</span> <span class=\"reference-given-names\">TD</span>, <span class=\"reference-surname\">Ten Have</span> <span class=\"reference-given-names\">TR</span>. <span class=\"citation-label\">14.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> A difference-in-differences analysis of health, safety, and greening vacant urban space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Epidemiol.</span></span> <span class=\"reference-volume\">174</span>:<span class=\"reference-fpage\">1296–</span><span class=\"reference-lpage\">306</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&amp;author=CC+Branas&amp;author=RA+Cheney&amp;author=JM+MacDonald&amp;author=VW+Tam&amp;author=TD+Jackson&amp;author=TR+Ten+Have&amp;journal=Am.+J.+Epidemiol.&amp;volume=174&amp;pages=1296-306&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B15\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bratman</span> <span class=\"reference-given-names\">GN</span>, <span class=\"reference-surname\">Hamilton</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Daily</span> <span class=\"reference-given-names\">GC</span>. <span class=\"citation-label\">15.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The impacts of nature experience on human cognitive function and mental health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. N.Y. Acad. Sci.</span></span> <span class=\"reference-volume\">1249</span>:<span class=\"reference-fpage\">118–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&amp;author=GN+Bratman&amp;author=JP+Hamilton&amp;author=GC+Daily&amp;journal=Ann.+N.Y.+Acad.+Sci.&amp;volume=1249&amp;pages=118-36&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B16\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bringslimark</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>. <span class=\"citation-label\">16.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> The psychological benefits of indoor plants: a critical review of the experimental literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">422–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&amp;author=T+Bringslimark&amp;author=T+Hartig&amp;author=GG+Patil&amp;journal=J.+Environ.+Psychol.&amp;volume=29&amp;pages=422-33&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B17\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Broekhuizen</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">SI</span>, <span class=\"reference-surname\">Pierik</span> <span class=\"reference-given-names\">FH</span>. <span class=\"citation-label\">17.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Aging in a Green Living Environment: A Systematic Review of the Literature.</span></span> TNO rep. R10154 Leiden: TNO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&amp;author=K+Broekhuizen&amp;author=SI+de+Vries&amp;author=FH+Pierik&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B18\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brooks</span> <span class=\"reference-given-names\">GD</span>, <span class=\"reference-surname\">Bush</span> <span class=\"reference-given-names\">RK</span>. <span class=\"citation-label\">18.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Allergens and other factors important in atopic disease. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Patterson\\'s Allergic Diseases</span></span> LC Grammer, PA Greenberger <span class=\"reference-fpage\">73–</span><span class=\"reference-lpage\">103</span> Philadelphia: Lippincott, Williams &amp; Wilkins, 7th ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&amp;author=GD+Brooks&amp;author=RK+Bush&amp;journal=Patterson%27s+Allergic+Diseases&amp;pages=73-103&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B19\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cariñanos</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Casares-Porcel</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">19.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">101</span>:<span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">14</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&amp;author=P+Cari%C3%B1anos&amp;author=M+Casares-Porcel&amp;journal=Landsc.+Urban+Plann.&amp;volume=101&amp;pages=205-14&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B20\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Chameides</span> <span class=\"reference-given-names\">WL</span>, <span class=\"reference-surname\">Lindsay</span> <span class=\"reference-given-names\">RW</span>, <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Kiang</span> <span class=\"reference-given-names\">CS</span>. <span class=\"citation-label\">20.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-article-title\"> The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">241</span>:<span class=\"reference-fpage\">1473–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&amp;author=WL+Chameides&amp;author=RW+Lindsay&amp;author=J+Richardson&amp;author=CS+Kiang&amp;journal=Science&amp;volume=241&amp;pages=1473-75&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B21\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cimprich</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">21.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Development of an intervention to restore attention in cancer patients. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Cancer Nurs.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">83–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&amp;author=B+Cimprich&amp;journal=Cancer+Nurs.&amp;volume=16&amp;pages=83-92&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B22\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Colfer</span> <span class=\"reference-given-names\">CJP</span>, <span class=\"reference-surname\">Sheil</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Kishi</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">22.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests and Human Health: Assessing the Evidence</span></span> Bogor, Indones.: Cent. Int. For. Res <a target=\"xrefwindow\" href=\"http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf\"><span class=\"reference-bold\">http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&amp;author=CJP+Colfer&amp;author=D+Sheil&amp;author=M+Kishi&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B23\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Day</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">23.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Plan Educ. Res.</span></span> <span class=\"reference-volume\">19</span>:<span class=\"reference-fpage\">265–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&amp;author=LL+Day&amp;journal=J.+Plan+Educ.+Res.&amp;volume=19&amp;pages=265-75&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B24\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Claßen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Eigenheer-Hug</span> <span class=\"reference-given-names\">S-M</span>, <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">24.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Contributions of natural environments to physical activity. </span> See Ref. 98 <span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&amp;author=S+de+Vries&amp;author=T+Cla%C3%9Fen&amp;author=S-M+Eigenheer-Hug&amp;author=K+Korpela&amp;author=J+Maas&amp;pages=205-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B25\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">25.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Streetscape greenery and health: stress, social cohesion and physical activity as mediators. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">94</span>:<span class=\"reference-fpage\">26–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Soc.+Sci.+Med.&amp;volume=94&amp;pages=26-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B26\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">26.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">1717–</span><span class=\"reference-lpage\">31</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&amp;author=S+de+Vries&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Environ.+Plann.+A&amp;volume=35&amp;pages=1717-31&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B27\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">DellaValle</span> <span class=\"reference-given-names\">CT</span>, <span class=\"reference-surname\">Triche</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Leaderer</span> <span class=\"reference-given-names\">BP</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">ML</span>. <span class=\"citation-label\">27.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Epidemiology</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">55–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&amp;author=CT+DellaValle&amp;author=EW+Triche&amp;author=BP+Leaderer&amp;author=ML+Bell&amp;journal=Epidemiology&amp;volume=23&amp;pages=55-63&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B28\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Den Hertog</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Bronkhorst</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Moerman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Van Wilgenburg</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">28.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit</span> [<span class=\"reference-italic\">The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity</span>].</span> Amsterdam: EMGO Inst.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&amp;author=F+Den+Hertog&amp;author=M+Bronkhorst&amp;author=M+Moerman&amp;author=R+Van+Wilgenburg&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B29\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Kerr</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Lee</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Rosenberg</span> <span class=\"reference-given-names\">DE</span>. <span class=\"citation-label\">29.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Neighborhood environment and physical activity among youth: a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">442–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&amp;author=D+Ding&amp;author=JF+Sallis&amp;author=J+Kerr&amp;author=S+Lee&amp;author=DE+Rosenberg&amp;journal=Am.+J.+Prev.+Med.&amp;volume=41&amp;pages=442-55&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B30\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Domm</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Drew</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Greene</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Ripley</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Tordesillas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">30.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Recommended urban forest mixtures to optimize selected environmental benefits. </span> <span class=\"reference-source\"><span class=\"reference-italic\">EnviroNews: Int. Soc. Environ. Bot.</span></span> <span class=\"reference-volume\">14</span>:<span class=\"reference-fpage\">7–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&amp;author=J+Domm&amp;author=R+Drew&amp;author=A+Greene&amp;author=E+Ripley&amp;author=R+Smardon&amp;author=J+Tordesillas&amp;journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&amp;volume=14&amp;pages=7-10&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B31\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Donovan</span> <span class=\"reference-given-names\">GH</span>, <span class=\"reference-surname\">Prestemon</span> <span class=\"reference-given-names\">JP</span>. <span class=\"citation-label\">31.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The effect of trees on crime in Portland, Oregon. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&amp;author=GH+Donovan&amp;author=JP+Prestemon&amp;journal=Environ.+Behav.&amp;volume=44&amp;pages=3-30&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B32\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Eid</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Overman</span> <span class=\"reference-given-names\">HG</span>, <span class=\"reference-surname\">Puga</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Turner</span> <span class=\"reference-given-names\">MA</span>. <span class=\"citation-label\">32.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Fat city: questioning the relationship between urban sprawl and obesity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Urban Econ.</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">385–</span><span class=\"reference-lpage\">404</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&amp;author=J+Eid&amp;author=HG+Overman&amp;author=D+Puga&amp;author=MA+Turner&amp;journal=J.+Urban+Econ.&amp;volume=63&amp;pages=385-404&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B33\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Engel</span> <span class=\"reference-given-names\">GL</span>. <span class=\"citation-label\">33.\\u2002</span> <span class=\"reference-year\">1977</span>. <span class=\"reference-article-title\"> The need for a new medical model: a challenge for biomedicine. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">196</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&amp;author=GL+Engel&amp;journal=Science&amp;volume=196&amp;pages=129-36&amp;publication_year=1977&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B34\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Escobedo</span> <span class=\"reference-given-names\">FJ</span>, <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>. <span class=\"citation-label\">34.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Spatial heterogeneity and air pollution removal by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">90</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&amp;author=FJ+Escobedo&amp;author=DJ+Nowak&amp;journal=Landsc.+Urban+Plann.&amp;volume=90&amp;pages=102-10&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B35\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ferdinand</span> <span class=\"reference-given-names\">AO</span>, <span class=\"reference-surname\">Sen</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Rahurkar</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Engler</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Menachemi</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">35.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The relationship between built environments and physical activity: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">102</span>:<span class=\"reference-fpage\">e7–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&amp;author=AO+Ferdinand&amp;author=B+Sen&amp;author=S+Rahurkar&amp;author=S+Engler&amp;author=N+Menachemi&amp;journal=Am.+J.+Public+Health&amp;volume=102&amp;pages=e7-13&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B36\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Forrest</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kearns</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">36.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Social cohesion, social capital and the neighbourhood. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban Stud.</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">2125–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&amp;author=R+Forrest&amp;author=A+Kearns&amp;journal=Urban+Stud.&amp;volume=38&amp;pages=2125-43&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B37\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fowler</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">37.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollutant deposition and uptake by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Air Pollution and Plant Life</span></span> JNB Bell, M Treshow <span class=\"reference-fpage\">43–</span><span class=\"reference-lpage\">67</span> New York: Wiley, 2nd ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&amp;author=D+Fowler&amp;journal=Air+Pollution+and+Plant+Life&amp;pages=43-67&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B38\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">38.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Creating sense of community: the role of public space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&amp;author=J+Francis&amp;author=B+Giles-Corti&amp;author=L+Wood&amp;author=M+Knuiman&amp;journal=J.+Environ.+Psychol.&amp;volume=32&amp;pages=401-9&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B39\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">LJ</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">39.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">74</span>:<span class=\"reference-fpage\">1570–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&amp;author=J+Francis&amp;author=LJ+Wood&amp;author=M+Knuiman&amp;author=B+Giles-Corti&amp;journal=Soc.+Sci.+Med.&amp;volume=74&amp;pages=1570-77&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B40\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fraser</span> <span class=\"reference-given-names\">SDS</span>, <span class=\"reference-surname\">Lock</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">40.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Cycling for transport and public health: a systematic review of the effect of the environment on cycling. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eur. J. Public Health</span></span> <span class=\"reference-volume\">21</span>:<span class=\"reference-fpage\">738–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&amp;author=SDS+Fraser&amp;author=K+Lock&amp;journal=Eur.+J.+Public+Health&amp;volume=21&amp;pages=738-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B41\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frost</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Goins</span> <span class=\"reference-given-names\">RT</span>, <span class=\"reference-surname\">Hunter</span> <span class=\"reference-given-names\">RH</span>, <span class=\"reference-surname\">Hooker</span> <span class=\"reference-given-names\">SP</span>, <span class=\"reference-surname\">Bryant</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">41.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Effects of the built environment on physical activity of adults living in rural settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Health Promot.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">267–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&amp;author=SS+Frost&amp;author=RT+Goins&amp;author=RH+Hunter&amp;author=SP+Hooker&amp;author=LL+Bryant&amp;journal=Am.+J.+Health+Promot.&amp;volume=24&amp;pages=267-83&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B42\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">42.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Beyond toxicity: human health and the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">234–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=20&amp;pages=234-40&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B43\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">43.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The evidence of nature and the nature of evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">196–</span><span class=\"reference-lpage\">97</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=44&amp;pages=196-97&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B44\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Galea</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Vlahov</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">44.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Urban health: evidence, challenges, and directions. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">341–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&amp;author=S+Galea&amp;author=D+Vlahov&amp;journal=Annu.+Rev.+Public+Health&amp;volume=26&amp;pages=341-65&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B45\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gatersleben</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Andrews</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">45.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> When walking in nature is not restorative—the role of prospect and refuge. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">91–</span><span class=\"reference-lpage\">101</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&amp;author=B+Gatersleben&amp;author=M+Andrews&amp;journal=Health+Place&amp;volume=20&amp;pages=91-101&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B46\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Broomhall</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Collins</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Douglas</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">46.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Increasing walking: How important is distance to, attractiveness, and size of public open space?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&amp;author=B+Giles-Corti&amp;author=MH+Broomhall&amp;author=M+Knuiman&amp;author=C+Collins&amp;author=K+Douglas&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=169-76&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B47\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gonzalez</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>, <span class=\"reference-surname\">Martinsen</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Kirkevold</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">47.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Therapeutic horticulture in clinical depression: a prospective study of active components. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Adv. Nurs.</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">2002–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&amp;author=MT+Gonzalez&amp;author=T+Hartig&amp;author=GG+Patil&amp;author=EW+Martinsen&amp;author=M+Kirkevold&amp;journal=J.+Adv.+Nurs.&amp;volume=66&amp;pages=2002-13&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B48\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">48.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Nature experience in transactional perspective. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&amp;author=T+Hartig&amp;journal=Landsc.+Urban+Plann.&amp;volume=25&amp;pages=17-36&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B49\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>, <span class=\"reference-surname\">Jamner</span> <span class=\"reference-given-names\">LD</span>, <span class=\"reference-surname\">Davis</span> <span class=\"reference-given-names\">DS</span>, <span class=\"reference-surname\">Gärling</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">49.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Tracking restoration in natural and urban field settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">109–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&amp;author=T+Hartig&amp;author=GW+Evans&amp;author=LD+Jamner&amp;author=DS+Davis&amp;author=T+G%C3%A4rling&amp;journal=J.+Environ.+Psychol.&amp;volume=23&amp;pages=109-23&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B50\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Fransson</span> <span class=\"reference-given-names\">U</span>. <span class=\"citation-label\">50.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">82–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&amp;author=T+Hartig&amp;author=U+Fransson&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=82-96&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B51\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Kylin</span> <span class=\"reference-given-names\">C</span>. <span class=\"citation-label\">51.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Residence in the social ecology of stress and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Soc. Iss.</span></span> <span class=\"reference-volume\">59</span>:<span class=\"reference-fpage\">611–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&amp;author=T+Hartig&amp;author=G+Johansson&amp;author=C+Kylin&amp;journal=J.+Soc.+Iss.&amp;volume=59&amp;pages=611-36&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B52\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Mang</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">52.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Restorative effects of natural environment experiences. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&amp;author=T+Hartig&amp;author=M+Mang&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=23&amp;pages=3-26&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B53\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Hagerhall</span> <span class=\"reference-given-names\">CM</span>, <span class=\"reference-surname\">Tomalak</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">53.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: psychological, social and cultural processes. </span> See Ref. 98 <span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B54\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">54.\\u2002</span><span class=\"reference-collab\">Health Counc. Neth</span> <span class=\"reference-year\">2004</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being.</span></span> The Hague: Health Counc. Neth., RMNO <a target=\"xrefwindow\" href=\"http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf\"><span class=\"reference-bold\">http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&amp;publication_year=2004&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B55\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Heinen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">van Wee</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Maat</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">55.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Commuting by bicycle: an overview of the literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Transp. Rev.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&amp;author=E+Heinen&amp;author=B+van+Wee&amp;author=K+Maat&amp;journal=Transp.+Rev.&amp;volume=30&amp;pages=59-96&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B56\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hillsdon</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Panter</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Foster</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">56.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The relationship between access and quality of urban green space with population physical activity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">120</span>:<span class=\"reference-fpage\">1127–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&amp;author=M+Hillsdon&amp;author=J+Panter&amp;author=C+Foster&amp;author=A+Jones&amp;journal=Public+Health&amp;volume=120&amp;pages=1127-32&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B57\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Holt-Lunstad</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">TB</span>, <span class=\"reference-surname\">Layton</span> <span class=\"reference-given-names\">JB</span>. <span class=\"citation-label\">57.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social relationships and mortality risk: a meta-analytic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">PLoS Med.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">e1000316</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&amp;author=J+Holt-Lunstad&amp;author=TB+Smith&amp;author=JB+Layton&amp;journal=PLoS+Med.&amp;volume=7&amp;pages=e1000316&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B58\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Home</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hunziker</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">58.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Psychosocial outcomes as motivations for visiting nearby urban green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">34</span>:<span class=\"reference-fpage\">350–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&amp;author=R+Home&amp;author=M+Hunziker&amp;author=N+Bauer&amp;journal=Leis.+Sci.&amp;volume=34&amp;pages=350-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B59\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Islam</span> <span class=\"reference-given-names\">MN</span>, <span class=\"reference-surname\">Rahman</span> <span class=\"reference-given-names\">K-S</span>, <span class=\"reference-surname\">Bahar</span> <span class=\"reference-given-names\">MM</span>, <span class=\"reference-surname\">Habib</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Ando</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hattori</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">59.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Pollution attenuation by roadside greenbelt in and around urban areas. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">460–</span><span class=\"reference-lpage\">64</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&amp;author=MN+Islam&amp;author=K-S+Rahman&amp;author=MM+Bahar&amp;author=MA+Habib&amp;author=K+Ando&amp;author=N+Hattori&amp;journal=Urban+For.+Urban+Green.&amp;volume=11&amp;pages=460-64&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B60\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jahncke</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Hygge</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Halin</span> <span class=\"reference-given-names\">N</span>, <span class=\"reference-surname\">Green</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Dimberg</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">60.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Open-plan office noise: cognitive performance and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">31</span>:<span class=\"reference-fpage\">373–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&amp;author=H+Jahncke&amp;author=S+Hygge&amp;author=N+Halin&amp;author=AM+Green&amp;author=K+Dimberg&amp;journal=J.+Environ.+Psychol.&amp;volume=31&amp;pages=373-82&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B61\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Janssen</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">LeBlanc</span> <span class=\"reference-given-names\">AG</span>. <span class=\"citation-label\">61.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Behav. Nutr. Phys. Act.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&amp;author=I+Janssen&amp;author=AG+LeBlanc&amp;journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&amp;volume=7&amp;pages=40&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B62\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Fors</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Lindgren</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Wiström</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">62.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Perceived personal safety in relation to urban woodland vegetation—a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&amp;author=M+Jansson&amp;author=H+Fors&amp;author=T+Lindgren&amp;author=B+Wistr%C3%B6m&amp;journal=Urban+For.+Urban+Green.&amp;volume=12&amp;pages=127-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B63\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jim</span> <span class=\"reference-given-names\">CY</span>, <span class=\"reference-surname\">Chen</span> <span class=\"reference-given-names\">WY</span>. <span class=\"citation-label\">63.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Manag.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">665–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&amp;author=CY+Jim&amp;author=WY+Chen&amp;journal=J.+Environ.+Manag.&amp;volume=88&amp;pages=665-76&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B64\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">64.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Psychological benefits of walking: moderation by company and outdoor environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Appl. Psychol. Health Well-Being</span></span> <span class=\"reference-volume\">3</span>:<span class=\"reference-fpage\">261–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&amp;author=M+Johansson&amp;author=T+Hartig&amp;author=H+Staats&amp;journal=Appl.+Psychol.+Health+Well-Being&amp;volume=3&amp;pages=261-80&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B65\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaczynski</span> <span class=\"reference-given-names\">AT</span>, <span class=\"reference-surname\">Henderson</span> <span class=\"reference-given-names\">KA</span>. <span class=\"citation-label\">65.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Environmental correlates of physical activity: a review of evidence about parks and recreation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">315–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&amp;author=AT+Kaczynski&amp;author=KA+Henderson&amp;journal=Leis.+Sci.&amp;volume=29&amp;pages=315-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B66\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">66.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> The role of nature in the context of the workplace. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">193–</span><span class=\"reference-lpage\">201</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&amp;author=R+Kaplan&amp;journal=Landsc.+Urban+Plann.&amp;volume=26&amp;pages=193-201&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B67\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">67.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-source\"><span class=\"reference-italic\">The Experience of Nature: A Psychological Perspective</span></span> New York: Cambridge Univ. Press\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&amp;author=R+Kaplan&amp;author=S+Kaplan&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B68\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">68.\\u2002</span> <span class=\"reference-year\">1995</span>. <span class=\"reference-article-title\"> The restorative benefits of nature: toward an integrative framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&amp;author=S+Kaplan&amp;journal=J.+Environ.+Psychol.&amp;volume=15&amp;pages=169-82&amp;publication_year=1995&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B69\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">69.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Meditation, restoration, and the management of mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">480–</span><span class=\"reference-lpage\">506</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&amp;author=S+Kaplan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=480-506&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B70\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Karl</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Harley</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Emmons</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Thornton</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Guenther</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">70.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">330</span>:<span class=\"reference-fpage\">816–</span><span class=\"reference-lpage\">19</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&amp;author=T+Karl&amp;author=P+Harley&amp;author=L+Emmons&amp;author=B+Thornton&amp;author=A+Guenther&amp;journal=Science&amp;volume=330&amp;pages=816-19&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B71\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaźmierczak</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">71.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The contribution of local parks to neighbourhood social ties. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">109</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">44</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&amp;author=A+Ka%C5%BAmierczak&amp;journal=Landsc.+Urban+Plann.&amp;volume=109&amp;pages=31-44&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B72\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Knopf</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">72.\\u2002</span> <span class=\"reference-year\">1987</span>. <span class=\"reference-article-title\"> Human behavior, cognition, and affect in the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Handbook of Environmental Psychology</span></span> D Stokols, I Altman <span class=\"reference-fpage\">783–</span><span class=\"reference-lpage\">825</span> New York: Wiley\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&amp;author=RC+Knopf&amp;journal=Handbook+of+Environmental+Psychology&amp;pages=783-825&amp;publication_year=1987&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B73\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">73.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Restorative qualities of favorite places. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&amp;author=K+Korpela&amp;author=T+Hartig&amp;journal=J.+Environ.+Psychol.&amp;volume=16&amp;pages=221-33&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B74\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kroll</span> <span class=\"reference-given-names\">JH</span>, <span class=\"reference-surname\">Seinfeld</span> <span class=\"reference-given-names\">JH</span>. <span class=\"citation-label\">74.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">42</span>:<span class=\"reference-fpage\">3593–</span><span class=\"reference-lpage\">624</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&amp;author=JH+Kroll&amp;author=JH+Seinfeld&amp;journal=Atmos.+Environ.&amp;volume=42&amp;pages=3593-624&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B75\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">75.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Aggression and violence in the inner city: effects of environment via mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">543–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=543-71&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B76\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">76.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Environment and crime in the inner city: Does vegetation reduce crime?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">343–</span><span class=\"reference-lpage\">67</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=343-67&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B77\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>, <span class=\"reference-surname\">Coley</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Brunson</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">77.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Fertile ground for community: inner-city neighborhood common spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Community Psychol.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">823–</span><span class=\"reference-lpage\">51</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;author=RL+Coley&amp;author=L+Brunson&amp;journal=Am.+J.+Community+Psychol.&amp;volume=26&amp;pages=823-51&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B78\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">78.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Greenspace and obesity: a systematic review of the evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Obes. Rev.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">e183–</span><span class=\"reference-lpage\">89</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Obes.+Rev.&amp;volume=12&amp;pages=e183-89&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B79\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">79.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">118</span>:<span class=\"reference-fpage\">62–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Landsc.+Urban+Plann.&amp;volume=118&amp;pages=62-69&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B80\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lindheim</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Syme</span> <span class=\"reference-given-names\">SL</span>. <span class=\"citation-label\">80.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Environments, people, and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">335–</span><span class=\"reference-lpage\">59</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&amp;author=R+Lindheim&amp;author=SL+Syme&amp;journal=Annu.+Rev.+Public+Health&amp;volume=4&amp;pages=335-59&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B81\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Liu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Mu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Zhu</span> <span class=\"reference-given-names\">Y-G</span>, <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Arens</span> <span class=\"reference-given-names\">NC</span>. <span class=\"citation-label\">81.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Which ornamental plant species effectively remove benzene from indoor air?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">650–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&amp;author=Y-J+Liu&amp;author=Y-J+Mu&amp;author=Y-G+Zhu&amp;author=H+Ding&amp;author=NC+Arens&amp;journal=Atmos.+Environ.&amp;volume=41&amp;pages=650-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B82\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lloyd</span> <span class=\"reference-given-names\">GER</span>, <span class=\"reference-surname\">Chadwick</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mann</span> <span class=\"reference-given-names\">WN</span>. <span class=\"citation-label\">82.\\u2002</span> <span class=\"reference-year\">1978</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Hippocratic Writings</span></span> Harmondsworth: Penguin\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&amp;author=GER+Lloyd&amp;author=J+Chadwick&amp;author=WN+Mann&amp;publication_year=1978&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B83\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lovasi</span> <span class=\"reference-given-names\">GS</span>, <span class=\"reference-surname\">O\\'Neil-Dunne</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Lu</span> <span class=\"reference-given-names\">JW</span>, <span class=\"reference-surname\">Sheehan</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Perzanowski</span> <span class=\"reference-given-names\">MS</span>. <span class=\"citation-label\">83.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Perspect.</span></span> <span class=\"reference-volume\">121</span>:<span class=\"reference-fpage\">494–</span><span class=\"reference-lpage\">500</span> 00e1–6 \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&amp;author=GS+Lovasi&amp;author=JP+O%27Neil-Dunne&amp;author=JW+Lu&amp;author=D+Sheehan&amp;author=MS+Perzanowski&amp;journal=Environ.+Health+Perspect.&amp;volume=121&amp;pages=494-500&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B84\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">84.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Is green space in the living environment associated with people\\'s feelings of social safety?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">1763–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&amp;author=J+Maas&amp;author=P+Spreeuwenberg&amp;author=M+van+Winsum-Westra&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=PP+Groenewegen&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=1763-77&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B85\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SM</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">85.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Social contacts as a possible mechanism behind the relation between green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">586–</span><span class=\"reference-lpage\">95</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&amp;author=J+Maas&amp;author=SM+van+Dillen&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Health+Place&amp;volume=15&amp;pages=586-95&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B86\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Schellevis</span> <span class=\"reference-given-names\">FG</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">86.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Morbidity is related to a green living environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">967–</span><span class=\"reference-lpage\">73</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;author=FG+Schellevis&amp;author=PP+Groenewegen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=63&amp;pages=967-73&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B87\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">87.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Green space, urbanity, and health: How strong is the relation?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">60</span>:<span class=\"reference-fpage\">587–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=60&amp;pages=587-92&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B88\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">88.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">8</span>:<span class=\"reference-fpage\">206</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=P+Spreeuwenberg&amp;author=PP+Groenewegen&amp;journal=BMC+Public+Health&amp;volume=8&amp;pages=206&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B89\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maller</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Townsend</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">St Leger</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Henderson-Wilson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Pryor</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">89.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context</span></span> Melbourne, Aust.: Deakin Univ.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&amp;author=C+Maller&amp;author=M+Townsend&amp;author=L+St+Leger&amp;author=C+Henderson-Wilson&amp;author=A+Pryor&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B90\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCormack</span> <span class=\"reference-given-names\">GR</span>, <span class=\"reference-surname\">Rock</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Toohey</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Hignell</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">90.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">712–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&amp;author=GR+McCormack&amp;author=M+Rock&amp;author=AM+Toohey&amp;author=D+Hignell&amp;journal=Health+Place&amp;volume=16&amp;pages=712-26&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B91\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCurdy</span> <span class=\"reference-given-names\">LE</span>, <span class=\"reference-surname\">Winterbottom</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Mehta</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Roberts</span> <span class=\"reference-given-names\">JR</span>. <span class=\"citation-label\">91.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Using nature and outdoor activity to improve children\\'s health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Curr. Probl. Pediatr. Adolesc. Health Care</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&amp;author=LE+McCurdy&amp;author=KE+Winterbottom&amp;author=SS+Mehta&amp;author=JR+Roberts&amp;journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&amp;volume=40&amp;pages=102-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B92\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">92.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Is physical activity in natural environments better for mental health than physical activity in other environments?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">130–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=91&amp;pages=130-34&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B93\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">93.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Greenspace, urbanity and health: relationships in England. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">61</span>:<span class=\"reference-fpage\">681–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=61&amp;pages=681-83&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B94\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">94.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Effect of exposure to natural environment on health inequalities: an observational population study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">372</span>:<span class=\"reference-fpage\">1655–</span><span class=\"reference-lpage\">60</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=Lancet&amp;volume=372&amp;pages=1655-60&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B95\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitrione</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">95.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Therapeutic responses to natural environments: using gardens to improve health care. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Minn. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&amp;author=S+Mitrione&amp;journal=Minn.+Med.&amp;volume=91&amp;pages=31-34&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B96\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Muñoz</span> <span class=\"reference-given-names\">S-A</span>. <span class=\"citation-label\">96.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Children in the Outdoors: A Literature Review</span></span> Forres, Scotl.: Sustain. Dev. Res. Cent.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&amp;author=S-A+Mu%C3%B1oz&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B97\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nieminen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Martelin</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Koskinen</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Aro</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Alanen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hyyppä</span> <span class=\"reference-given-names\">MT</span>. <span class=\"citation-label\">97.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social capital as a determinant of self-rated health and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Public Health</span></span> <span class=\"reference-volume\">55</span>:<span class=\"reference-fpage\">531–</span><span class=\"reference-lpage\">42</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&amp;author=T+Nieminen&amp;author=T+Martelin&amp;author=S+Koskinen&amp;author=H+Aro&amp;author=E+Alanen&amp;author=MT+Hyypp%C3%A4&amp;journal=Int.+J.+Public+Health&amp;volume=55&amp;pages=531-42&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B98\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Sangster</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Gallis</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">98.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests, Trees and Human Health</span></span> Dordrecht: Springer\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&amp;author=K+Nilsson&amp;author=M+Sangster&amp;author=C+Gallis&amp;author=T+Hartig&amp;author=S+de+Vries&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B99\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">ME</span>, <span class=\"reference-surname\">Berglund</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">99.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Soundscape quality in suburban green areas and city parks. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Acta Acustica United Acustica</span></span> <span class=\"reference-volume\">92</span>:<span class=\"reference-fpage\">903–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&amp;author=ME+Nilsson&amp;author=B+Berglund&amp;journal=Acta+Acustica+United+Acustica&amp;volume=92&amp;pages=903-11&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B100\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>, <span class=\"reference-surname\">Crane</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Stevens</span> <span class=\"reference-given-names\">JC</span>. <span class=\"citation-label\">100.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Air pollution removal by urban trees and shrubs in the United States. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">115–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&amp;author=DJ+Nowak&amp;author=DE+Crane&amp;author=JC+Stevens&amp;journal=Urban+For.+Urban+Green.&amp;volume=4&amp;pages=115-23&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B101\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Olmsted</span> <span class=\"reference-given-names\">FL</span>. <span class=\"citation-label\">101.\\u2002</span> <span class=\"reference-year\">1970 (1870)</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Public Parks and the Enlargement of Towns</span></span> New York: Arno (Cambridge, MA: Riverside)\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&amp;author=FL+Olmsted&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B102\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Orwell</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Burchett</span> <span class=\"reference-given-names\">MD</span>, <span class=\"reference-surname\">Tarran</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Torpy</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">102.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Water Air Soil Poll.</span></span> <span class=\"reference-volume\">177</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&amp;author=RL+Orwell&amp;author=RA+Wood&amp;author=MD+Burchett&amp;author=J+Tarran&amp;author=F+Torpy&amp;journal=Water+Air+Soil+Poll.&amp;volume=177&amp;pages=59-80&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B103\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Paoletti</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Bardelli</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Giovannini</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Pecchioli</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">103.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Air quality impact of an urban park over time. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Procedia Environ. Sci.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">10–</span><span class=\"reference-lpage\">16</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&amp;author=E+Paoletti&amp;author=T+Bardelli&amp;author=G+Giovannini&amp;author=L+Pecchioli&amp;journal=Procedia+Environ.+Sci.&amp;volume=4&amp;pages=10-16&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B104\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Powell</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Paluch</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Blair</span> <span class=\"reference-given-names\">SN</span>. <span class=\"citation-label\">104.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Physical activity for health: What Kind? How much? How Intense? On Top of What?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">349–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&amp;author=KE+Powell&amp;author=AE+Paluch&amp;author=SN+Blair&amp;journal=Annu.+Rev.+Public+Health&amp;volume=32&amp;pages=349-65&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B105\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Peacock</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Sellens</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Griffin</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">105.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The mental and physical health outcomes of green exercise. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Environ. Health Res.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">319–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&amp;author=J+Pretty&amp;author=J+Peacock&amp;author=M+Sellens&amp;author=M+Griffin&amp;journal=Int.+J.+Environ.+Health+Res.&amp;volume=15&amp;pages=319-37&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B106\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Proctor</span> <span class=\"reference-given-names\">JD</span>. <span class=\"citation-label\">106.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> The social construction of nature: relativist accusations, pragmatist and critical realist responses. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Assoc. Am. Geogr.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">352–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&amp;author=JD+Proctor&amp;journal=Ann.+Assoc.+Am.+Geogr.&amp;volume=88&amp;pages=352-76&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B107\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">107.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Gender differences in relationships between urban green space and health in the United Kingdom. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">71</span>:<span class=\"reference-fpage\">568–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=71&amp;pages=568-75&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B108\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Astell-Burt</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">108.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Green cities and health: a question of scale?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">160–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;author=T+Hartig&amp;author=S+de+Vries&amp;author=T+Astell-Burt&amp;author=H+Frumkin&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=66&amp;pages=160-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B109\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Pearce</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kingham</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">109.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Role of physical activity in the relationship between urban green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">127</span>:<span class=\"reference-fpage\">318–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&amp;author=EA+Richardson&amp;author=J+Pearce&amp;author=R+Mitchell&amp;author=S+Kingham&amp;journal=Public+Health&amp;volume=127&amp;pages=318-24&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B110\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rios</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Aiken</span> <span class=\"reference-given-names\">LS</span>, <span class=\"reference-surname\">Zautra</span> <span class=\"reference-given-names\">AJ</span>. <span class=\"citation-label\">110.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Behav. Med.</span></span> <span class=\"reference-volume\">43</span>:<span class=\"reference-fpage\">50–</span><span class=\"reference-lpage\">61</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&amp;author=R+Rios&amp;author=LS+Aiken&amp;author=AJ+Zautra&amp;journal=Ann.+Behav.+Med.&amp;volume=43&amp;pages=50-61&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B111\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rose</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">111.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Sick individuals and sick populations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Epidemiol.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&amp;author=G+Rose&amp;journal=Int.+J.+Epidemiol.&amp;volume=30&amp;pages=427-32&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B112\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sartelet</span> <span class=\"reference-given-names\">KN</span>, <span class=\"reference-surname\">Couvidat</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Seigneur</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roustan</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">112.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Impact of biogenic emissions on air quality over Europe and North America. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">53</span>:<span class=\"reference-fpage\">131–</span><span class=\"reference-lpage\">41</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&amp;author=KN+Sartelet&amp;author=F+Couvidat&amp;author=C+Seigneur&amp;author=Y+Roustan&amp;journal=Atmos.+Environ.&amp;volume=53&amp;pages=131-41&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B113\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Setälä</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Viippola</span> <span class=\"reference-given-names\">V</span>, <span class=\"reference-surname\">Rantalainen</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Pennanen</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Yli-Pelkonen</span> <span class=\"reference-given-names\">V</span>. <span class=\"citation-label\">113.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Does urban vegetation mitigate air pollution in northern conditions?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">183</span>:<span class=\"reference-fpage\">104–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&amp;author=H+Set%C3%A4l%C3%A4&amp;author=V+Viippola&amp;author=AL+Rantalainen&amp;author=A+Pennanen&amp;author=V+Yli-Pelkonen&amp;journal=Environ.+Pollut.&amp;volume=183&amp;pages=104-12&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B114\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Simpson</span> <span class=\"reference-given-names\">JR</span>, <span class=\"reference-surname\">McPherson</span> <span class=\"reference-given-names\">EG</span>. <span class=\"citation-label\">114.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">69–</span><span class=\"reference-lpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&amp;author=JR+Simpson&amp;author=EG+McPherson&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=69-74&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B115\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">115.\\u2002</span> <span class=\"reference-year\">1988</span>. <span class=\"reference-article-title\"> Perception and aesthetics of the urban environment: review of the role of vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">106</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&amp;author=RC+Smardon&amp;journal=Landsc.+Urban+Plann.&amp;volume=15&amp;pages=85-106&amp;publication_year=1988&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B116\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Van Gemerden</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">116.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&amp;author=H+Staats&amp;author=E+Van+Gemerden&amp;author=T+Hartig&amp;journal=Leis.+Sci.&amp;volume=32&amp;pages=401-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B117\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Stigsdotter</span> <span class=\"reference-given-names\">UK</span>, <span class=\"reference-surname\">Ekholm</span> <span class=\"reference-given-names\">O</span>, <span class=\"reference-surname\">Schipperijn</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Toftager</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Kamper-Jørgensen</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Randrup</span> <span class=\"reference-given-names\">TB</span>. <span class=\"citation-label\">117.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">411–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&amp;author=UK+Stigsdotter&amp;author=O+Ekholm&amp;author=J+Schipperijn&amp;author=M+Toftager&amp;author=F+Kamper-J%C3%B8rgensen&amp;author=TB+Randrup&amp;journal=Scand.+J.+Public+Health&amp;volume=38&amp;pages=411-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B118\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sugiyama</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Leslie</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Owen</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">118.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">62</span>:<span class=\"reference-fpage\">e9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&amp;author=T+Sugiyama&amp;author=E+Leslie&amp;author=B+Giles-Corti&amp;author=N+Owen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=62&amp;pages=e9&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B119\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Takano</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Nakamura</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Watanabe</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">119.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">56</span>:<span class=\"reference-fpage\">913–</span><span class=\"reference-lpage\">18</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&amp;author=T+Takano&amp;author=K+Nakamura&amp;author=M+Watanabe&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=56&amp;pages=913-18&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B120\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tallis</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Sinnett</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">120.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">38</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&amp;author=M+Tallis&amp;author=G+Taylor&amp;author=D+Sinnett&amp;author=P+Freer-Smith&amp;journal=Landsc.+Urban+Plann.&amp;volume=103&amp;pages=129-38&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B121\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>. <span class=\"citation-label\">121.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Children with attention deficits concentrate better after walk in the park. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Atten. Disord.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">402–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;journal=J.+Atten.+Disord.&amp;volume=12&amp;pages=402-9&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B122\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">122.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Views of nature and self-discipline: evidence from inner city children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">49–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=J.+Environ.+Psychol.&amp;volume=22&amp;pages=49-63&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B123\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Thompson Coon</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Boddy</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Stein</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Whear</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Depledge</span> <span class=\"reference-given-names\">MH</span>. <span class=\"citation-label\">123.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">1761–</span><span class=\"reference-lpage\">72</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&amp;author=J+Thompson+Coon&amp;author=K+Boddy&amp;author=K+Stein&amp;author=R+Whear&amp;author=J+Barton&amp;author=MH+Depledge&amp;journal=Environ.+Sci.+Technol.&amp;volume=45&amp;pages=1761-72&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B124\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tsunetsugu</span> <span class=\"reference-given-names\">Y</span>, <span class=\"reference-surname\">Park</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Miyazaki</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">124.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Prevent. Med.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">27–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&amp;author=Y+Tsunetsugu&amp;author=B+Park&amp;author=Y+Miyazaki&amp;journal=Environ.+Health+Prevent.+Med.&amp;volume=15&amp;pages=27-37&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B125\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">125.\\u2002</span> <span class=\"reference-year\">1979</span>. <span class=\"reference-article-title\"> Visual landscapes and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Res.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&amp;author=RS+Ulrich&amp;journal=Landsc.+Res.&amp;volume=4&amp;pages=17-23&amp;publication_year=1979&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B126\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">126.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Aesthetic and affective response to natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Human Behaviour and Environment: Advances in Theory and Research.</span></span> Volume\\n<span class=\"reference-volume\">6</span> <span class=\"reference-source\"><span class=\"reference-italic\">Behaviour and the Natural Environment</span></span>, ed. I\\nAltman, JF Wohlwill <span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">125</span> New York: Plenum\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&amp;author=RS+Ulrich&amp;journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&amp;pages=85-125&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B127\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Simons</span> <span class=\"reference-given-names\">RF</span>, <span class=\"reference-surname\">Losito</span> <span class=\"reference-given-names\">BD</span>, <span class=\"reference-surname\">Fiorito</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Miles</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Zelson</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">127.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Stress recovery during exposure to natural and urban environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">201–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&amp;author=RS+Ulrich&amp;author=RF+Simons&amp;author=BD+Losito&amp;author=E+Fiorito&amp;author=MA+Miles&amp;author=M+Zelson&amp;journal=J.+Environ.+Psychol.&amp;volume=11&amp;pages=201-30&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B128\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Cauwenberg</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">De Bourdeaudhuij</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">De Meester</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Van Dyck</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Salmon</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">128.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Relationship between the physical environment and physical activity in older adults: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">458–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&amp;author=J+Van+Cauwenberg&amp;author=I+De+Bourdeaudhuij&amp;author=F+De+Meester&amp;author=D+Van+Dyck&amp;author=J+Salmon&amp;journal=Health+Place&amp;volume=17&amp;pages=458-69&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B129\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Custers</span> <span class=\"reference-given-names\">MHG</span>. <span class=\"citation-label\">129.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Gardening promotes neuroendocrine and affective restoration from stress. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Health Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&amp;author=AE+Van+den+Berg&amp;author=MHG+Custers&amp;journal=J.+Health+Psychol.&amp;volume=16&amp;pages=3-11&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B130\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">130.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Green space as a buffer between stressful life events and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">70</span>:<span class=\"reference-fpage\">1203–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&amp;author=AE+Van+den+Berg&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Soc.+Sci.+Med.&amp;volume=70&amp;pages=1203-10&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B131\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>. <span class=\"citation-label\">131.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health</span></span> <span class=\"reference-volume\">9</span>:<span class=\"reference-fpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&amp;author=AE+Van+den+Berg&amp;author=M+van+Winsum-Westra&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;journal=Environ.+Health&amp;volume=9&amp;pages=74&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B132\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Herzele</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Podesta</span> <span class=\"reference-given-names\">MTC</span>, <span class=\"reference-surname\">van Zon</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">132.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: the challenge of linking practice and research. </span> See Ref. 98 <span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B133\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Montarzino</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">133.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> The childhood factor: adult visits to green places and the significance of childhood experience. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">111–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&amp;author=C+Ward+Thompson&amp;author=P+Aspinall&amp;author=A+Montarzino&amp;journal=Environ.+Behav.&amp;volume=40&amp;pages=111-43&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B134\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roe</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Clow</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Miller</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">134.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">105</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">29</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&amp;author=C+Ward+Thompson&amp;author=J+Roe&amp;author=P+Aspinall&amp;author=R+Mitchell&amp;author=A+Clow&amp;author=D+Miller&amp;journal=Landsc.+Urban+Plann.&amp;volume=105&amp;pages=221-29&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B135\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">135.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Nearby nature—a buffer of life stress among rural children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">311–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&amp;author=NM+Wells&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=35&amp;pages=311-30&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B136\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Lekies</span> <span class=\"reference-given-names\">KS</span>. <span class=\"citation-label\">136.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Nature and the life course: pathways from childhood nature experiences to adult environmentalism. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Child. Youth Environ.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&amp;author=NM+Wells&amp;author=KS+Lekies&amp;journal=Child.+Youth+Environ.&amp;volume=16&amp;pages=1-24&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B137\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Whitelaw</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">137.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Crit. Public Health</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&amp;author=S+Whitelaw&amp;journal=Crit.+Public+Health&amp;volume=22&amp;pages=427-40&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B138\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">138.\\u2002</span><span class=\"reference-collab\">WHO (World Health Organ.)</span> <span class=\"reference-year\">1946</span>. <span class=\"reference-article-title\"> <span class=\"reference-italic\">Preamble to the Constitution of the World Health Organization</span> as adopted by the International Health Conference. </span> New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&amp;publication_year=1946&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B139\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wilson</span> <span class=\"reference-given-names\">SJ</span>, <span class=\"reference-surname\">Lipsey</span> <span class=\"reference-given-names\">MW</span>. <span class=\"citation-label\">139.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eval. Program Plann.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&amp;author=SJ+Wilson&amp;author=MW+Lipsey&amp;journal=Eval.+Program+Plann.&amp;volume=23&amp;pages=1-12&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B140\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Yoo</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Kwon</span> <span class=\"reference-given-names\">YJ</span>, <span class=\"reference-surname\">Son</span> <span class=\"reference-given-names\">KC</span>, <span class=\"reference-surname\">Kays</span> <span class=\"reference-given-names\">SJ</span>. <span class=\"citation-label\">140.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Am. Soc. Hort. Sci.</span></span> <span class=\"reference-volume\">131</span>:<span class=\"reference-fpage\">452–</span><span class=\"reference-lpage\">58</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&amp;author=MH+Yoo&amp;author=YJ+Kwon&amp;author=KC+Son&amp;author=SJ+Kays&amp;journal=J.+Am.+Soc.+Hort.+Sci.&amp;volume=131&amp;pages=452-58&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B141\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Zick</span> <span class=\"reference-given-names\">CD</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">KR</span>, <span class=\"reference-surname\">Kowaleski-Jones</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Uno</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Merrill</span> <span class=\"reference-given-names\">BJ</span>. <span class=\"citation-label\">141.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Harvesting more than vegetables: the potential weight control benefits of community gardening. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">e1–</span><span class=\"reference-lpage\">6</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&amp;author=CD+Zick&amp;author=KR+Smith&amp;author=L+Kowaleski-Jones&amp;author=C+Uno&amp;author=BJ+Merrill&amp;journal=Am.+J.+Public+Health&amp;volume=103&amp;pages=e1-6&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li></ol></span><div class=\"clearer\">&nbsp;</div></div>\\n</div>\\n\\n<div id=\"article-level-0-figs-and-tables\" class=\"bm\">\\n\\n</div>\\n\\n<div id=\"article-level-0-end-metadata\" class=\"fm\">\\n\\n</div></div></div>\\n\\n</div>\\n<div id=\"referenceContainer\" class=\"references hidden-js-div tabbedsection tab-pane\">\\n<div id=\"referencedetails\">\\n<template id=\"js-morelikethis-link\"></template>\\n<template id=\"js-webofscience-link\" class=\"externallink\"></template>\\n<template id=\"js-pubmed-link\"></template>\\n<p class=\"description\"><span class=\"tl-main-part\">Literature Cited</span></p>\\n<ol id=\"articlereference\" class=\"articlereference-vancouver\">\\n<li class=\"refbody\" id=\"ref-B1\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Akbari</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Kurn</span> <span class=\"reference-given-names\">DM</span>, <span class=\"reference-surname\">Bretz</span> <span class=\"reference-given-names\">SE</span>, <span class=\"reference-surname\">Hanford</span> <span class=\"reference-given-names\">JW</span>. <span class=\"citation-label\">1.\\u2002</span> <span class=\"reference-year\">1997</span>. <span class=\"reference-article-title\"> Peak power and cooling energy savings of shade trees. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Energy Build.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">139–</span><span class=\"reference-lpage\">48</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&amp;author=H+Akbari&amp;author=DM+Kurn&amp;author=SE+Bretz&amp;author=JW+Hanford&amp;journal=Energy+Build.&amp;volume=25&amp;pages=139-48&amp;publication_year=1997&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B2\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Annerstedt</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Währborg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">2.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Nature-assisted therapy: systematic review of controlled and observational studies. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">39</span>:<span class=\"reference-fpage\">371–</span><span class=\"reference-lpage\">88</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&amp;author=M+Annerstedt&amp;author=P+W%C3%A4hrborg&amp;journal=Scand.+J.+Public+Health&amp;volume=39&amp;pages=371-88&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B3\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">3.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3947–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&amp;author=J+Barton&amp;author=J+Pretty&amp;journal=Environ.+Sci.+Technol.&amp;volume=44&amp;pages=3947-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B4\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Baum</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Ziersch</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Zhang</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Osborne</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">4.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">925–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&amp;author=FE+Baum&amp;author=AM+Ziersch&amp;author=G+Zhang&amp;author=K+Osborne&amp;journal=Health+Place&amp;volume=15&amp;pages=925-34&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B5\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bauman</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Reis</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">JC</span>, <span class=\"reference-surname\">Loos</span> <span class=\"reference-given-names\">RJ</span>, <span class=\"reference-surname\">Martin</span> <span class=\"reference-given-names\">BW</span>. <span class=\"citation-label\">5.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Correlates of physical activity: Why are some people physically active and others not?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">380</span>:<span class=\"reference-fpage\">258–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&amp;author=AE+Bauman&amp;author=RS+Reis&amp;author=JF+Sallis&amp;author=JC+Wells&amp;author=RJ+Loos&amp;author=BW+Martin&amp;journal=Lancet&amp;volume=380&amp;pages=258-71&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B6\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beck</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Meyers</span> <span class=\"reference-given-names\">NM</span>. <span class=\"citation-label\">6.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Health enhancement and companion animal ownership. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">247–</span><span class=\"reference-lpage\">57</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&amp;author=AM+Beck&amp;author=NM+Meyers&amp;journal=Annu.+Rev.+Public+Health&amp;volume=17&amp;pages=247-57&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B7\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beckett</span> <span class=\"reference-given-names\">KP</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">PH</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">7.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> The capture of particulate pollution by trees at five contrasting urban sites. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Arboric. J.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">209–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&amp;author=KP+Beckett&amp;author=PH+Freer-Smith&amp;author=G+Taylor&amp;journal=Arboric.+J.&amp;volume=24&amp;pages=209-30&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B8\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bedimo-Rung</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Mowen</span> <span class=\"reference-given-names\">AJ</span>, <span class=\"reference-surname\">Cohen</span> <span class=\"reference-given-names\">DA</span>. <span class=\"citation-label\">8.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The significance of parks to physical activity and public health: a conceptual model. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">159–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&amp;author=AL+Bedimo-Rung&amp;author=AJ+Mowen&amp;author=DA+Cohen&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=159-68&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B9\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Benjamin</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Winer</span> <span class=\"reference-given-names\">AM</span>. <span class=\"citation-label\">9.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Estimating the ozone-forming potential of urban trees and shrubs. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">53–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&amp;author=MT+Benjamin&amp;author=AM+Winer&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=53-68&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B10\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bize</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Johnson</span> <span class=\"reference-given-names\">JA</span>, <span class=\"reference-surname\">Plotnikoff</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">10.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Physical activity level and health-related quality of life in the general adult population: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Prev. Med.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">15</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&amp;author=R+Bize&amp;author=JA+Johnson&amp;author=RC+Plotnikoff&amp;journal=Prev.+Med.&amp;volume=45&amp;pages=401-15&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B11\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">LM</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">11.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> A systematic review of evidence for the added benefits to health of exposure to natural environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">10</span>:<span class=\"reference-fpage\">456</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&amp;author=DE+Bowler&amp;author=LM+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=BMC+Public+Health&amp;volume=10&amp;pages=456&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B12\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">12.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Urban greening to cool towns and cities: a systematic review of the empirical evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">97</span>:<span class=\"reference-fpage\">147–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&amp;author=DE+Bowler&amp;author=L+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=Landsc.+Urban+Plann.&amp;volume=97&amp;pages=147-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B13\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brack</span> <span class=\"reference-given-names\">CL</span>. <span class=\"citation-label\">13.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollution mitigation and carbon sequestration by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">116</span>:<span class=\"reference-fpage\">S195–</span><span class=\"reference-lpage\">200</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&amp;author=CL+Brack&amp;journal=Environ.+Pollut.&amp;volume=116&amp;pages=S195-200&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B14\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Branas</span> <span class=\"reference-given-names\">CC</span>, <span class=\"reference-surname\">Cheney</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">MacDonald</span> <span class=\"reference-given-names\">JM</span>, <span class=\"reference-surname\">Tam</span> <span class=\"reference-given-names\">VW</span>, <span class=\"reference-surname\">Jackson</span> <span class=\"reference-given-names\">TD</span>, <span class=\"reference-surname\">Ten Have</span> <span class=\"reference-given-names\">TR</span>. <span class=\"citation-label\">14.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> A difference-in-differences analysis of health, safety, and greening vacant urban space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Epidemiol.</span></span> <span class=\"reference-volume\">174</span>:<span class=\"reference-fpage\">1296–</span><span class=\"reference-lpage\">306</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&amp;author=CC+Branas&amp;author=RA+Cheney&amp;author=JM+MacDonald&amp;author=VW+Tam&amp;author=TD+Jackson&amp;author=TR+Ten+Have&amp;journal=Am.+J.+Epidemiol.&amp;volume=174&amp;pages=1296-306&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B15\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bratman</span> <span class=\"reference-given-names\">GN</span>, <span class=\"reference-surname\">Hamilton</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Daily</span> <span class=\"reference-given-names\">GC</span>. <span class=\"citation-label\">15.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The impacts of nature experience on human cognitive function and mental health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. N.Y. Acad. Sci.</span></span> <span class=\"reference-volume\">1249</span>:<span class=\"reference-fpage\">118–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&amp;author=GN+Bratman&amp;author=JP+Hamilton&amp;author=GC+Daily&amp;journal=Ann.+N.Y.+Acad.+Sci.&amp;volume=1249&amp;pages=118-36&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B16\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bringslimark</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>. <span class=\"citation-label\">16.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> The psychological benefits of indoor plants: a critical review of the experimental literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">422–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&amp;author=T+Bringslimark&amp;author=T+Hartig&amp;author=GG+Patil&amp;journal=J.+Environ.+Psychol.&amp;volume=29&amp;pages=422-33&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B17\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Broekhuizen</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">SI</span>, <span class=\"reference-surname\">Pierik</span> <span class=\"reference-given-names\">FH</span>. <span class=\"citation-label\">17.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Aging in a Green Living Environment: A Systematic Review of the Literature.</span></span> TNO rep. R10154 Leiden: TNO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&amp;author=K+Broekhuizen&amp;author=SI+de+Vries&amp;author=FH+Pierik&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B18\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brooks</span> <span class=\"reference-given-names\">GD</span>, <span class=\"reference-surname\">Bush</span> <span class=\"reference-given-names\">RK</span>. <span class=\"citation-label\">18.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Allergens and other factors important in atopic disease. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Patterson\\'s Allergic Diseases</span></span> LC Grammer, PA Greenberger <span class=\"reference-fpage\">73–</span><span class=\"reference-lpage\">103</span> Philadelphia: Lippincott, Williams &amp; Wilkins, 7th ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&amp;author=GD+Brooks&amp;author=RK+Bush&amp;journal=Patterson%27s+Allergic+Diseases&amp;pages=73-103&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B19\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cariñanos</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Casares-Porcel</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">19.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">101</span>:<span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">14</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&amp;author=P+Cari%C3%B1anos&amp;author=M+Casares-Porcel&amp;journal=Landsc.+Urban+Plann.&amp;volume=101&amp;pages=205-14&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B20\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Chameides</span> <span class=\"reference-given-names\">WL</span>, <span class=\"reference-surname\">Lindsay</span> <span class=\"reference-given-names\">RW</span>, <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Kiang</span> <span class=\"reference-given-names\">CS</span>. <span class=\"citation-label\">20.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-article-title\"> The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">241</span>:<span class=\"reference-fpage\">1473–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&amp;author=WL+Chameides&amp;author=RW+Lindsay&amp;author=J+Richardson&amp;author=CS+Kiang&amp;journal=Science&amp;volume=241&amp;pages=1473-75&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B21\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cimprich</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">21.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Development of an intervention to restore attention in cancer patients. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Cancer Nurs.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">83–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&amp;author=B+Cimprich&amp;journal=Cancer+Nurs.&amp;volume=16&amp;pages=83-92&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B22\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Colfer</span> <span class=\"reference-given-names\">CJP</span>, <span class=\"reference-surname\">Sheil</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Kishi</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">22.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests and Human Health: Assessing the Evidence</span></span> Bogor, Indones.: Cent. Int. For. Res <a target=\"xrefwindow\" href=\"http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf\"><span class=\"reference-bold\">http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&amp;author=CJP+Colfer&amp;author=D+Sheil&amp;author=M+Kishi&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B23\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Day</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">23.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Plan Educ. Res.</span></span> <span class=\"reference-volume\">19</span>:<span class=\"reference-fpage\">265–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&amp;author=LL+Day&amp;journal=J.+Plan+Educ.+Res.&amp;volume=19&amp;pages=265-75&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B24\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Claßen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Eigenheer-Hug</span> <span class=\"reference-given-names\">S-M</span>, <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">24.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Contributions of natural environments to physical activity. </span> See Ref. 98 <span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&amp;author=S+de+Vries&amp;author=T+Cla%C3%9Fen&amp;author=S-M+Eigenheer-Hug&amp;author=K+Korpela&amp;author=J+Maas&amp;pages=205-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B25\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">25.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Streetscape greenery and health: stress, social cohesion and physical activity as mediators. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">94</span>:<span class=\"reference-fpage\">26–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Soc.+Sci.+Med.&amp;volume=94&amp;pages=26-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B26\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">26.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">1717–</span><span class=\"reference-lpage\">31</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&amp;author=S+de+Vries&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Environ.+Plann.+A&amp;volume=35&amp;pages=1717-31&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B27\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">DellaValle</span> <span class=\"reference-given-names\">CT</span>, <span class=\"reference-surname\">Triche</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Leaderer</span> <span class=\"reference-given-names\">BP</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">ML</span>. <span class=\"citation-label\">27.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Epidemiology</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">55–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&amp;author=CT+DellaValle&amp;author=EW+Triche&amp;author=BP+Leaderer&amp;author=ML+Bell&amp;journal=Epidemiology&amp;volume=23&amp;pages=55-63&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B28\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Den Hertog</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Bronkhorst</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Moerman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Van Wilgenburg</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">28.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit</span> [<span class=\"reference-italic\">The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity</span>].</span> Amsterdam: EMGO Inst.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&amp;author=F+Den+Hertog&amp;author=M+Bronkhorst&amp;author=M+Moerman&amp;author=R+Van+Wilgenburg&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B29\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Kerr</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Lee</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Rosenberg</span> <span class=\"reference-given-names\">DE</span>. <span class=\"citation-label\">29.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Neighborhood environment and physical activity among youth: a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">442–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&amp;author=D+Ding&amp;author=JF+Sallis&amp;author=J+Kerr&amp;author=S+Lee&amp;author=DE+Rosenberg&amp;journal=Am.+J.+Prev.+Med.&amp;volume=41&amp;pages=442-55&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B30\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Domm</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Drew</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Greene</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Ripley</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Tordesillas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">30.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Recommended urban forest mixtures to optimize selected environmental benefits. </span> <span class=\"reference-source\"><span class=\"reference-italic\">EnviroNews: Int. Soc. Environ. Bot.</span></span> <span class=\"reference-volume\">14</span>:<span class=\"reference-fpage\">7–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&amp;author=J+Domm&amp;author=R+Drew&amp;author=A+Greene&amp;author=E+Ripley&amp;author=R+Smardon&amp;author=J+Tordesillas&amp;journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&amp;volume=14&amp;pages=7-10&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B31\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Donovan</span> <span class=\"reference-given-names\">GH</span>, <span class=\"reference-surname\">Prestemon</span> <span class=\"reference-given-names\">JP</span>. <span class=\"citation-label\">31.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The effect of trees on crime in Portland, Oregon. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&amp;author=GH+Donovan&amp;author=JP+Prestemon&amp;journal=Environ.+Behav.&amp;volume=44&amp;pages=3-30&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B32\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Eid</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Overman</span> <span class=\"reference-given-names\">HG</span>, <span class=\"reference-surname\">Puga</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Turner</span> <span class=\"reference-given-names\">MA</span>. <span class=\"citation-label\">32.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Fat city: questioning the relationship between urban sprawl and obesity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Urban Econ.</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">385–</span><span class=\"reference-lpage\">404</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&amp;author=J+Eid&amp;author=HG+Overman&amp;author=D+Puga&amp;author=MA+Turner&amp;journal=J.+Urban+Econ.&amp;volume=63&amp;pages=385-404&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B33\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Engel</span> <span class=\"reference-given-names\">GL</span>. <span class=\"citation-label\">33.\\u2002</span> <span class=\"reference-year\">1977</span>. <span class=\"reference-article-title\"> The need for a new medical model: a challenge for biomedicine. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">196</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&amp;author=GL+Engel&amp;journal=Science&amp;volume=196&amp;pages=129-36&amp;publication_year=1977&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B34\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Escobedo</span> <span class=\"reference-given-names\">FJ</span>, <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>. <span class=\"citation-label\">34.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Spatial heterogeneity and air pollution removal by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">90</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&amp;author=FJ+Escobedo&amp;author=DJ+Nowak&amp;journal=Landsc.+Urban+Plann.&amp;volume=90&amp;pages=102-10&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B35\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ferdinand</span> <span class=\"reference-given-names\">AO</span>, <span class=\"reference-surname\">Sen</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Rahurkar</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Engler</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Menachemi</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">35.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The relationship between built environments and physical activity: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">102</span>:<span class=\"reference-fpage\">e7–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&amp;author=AO+Ferdinand&amp;author=B+Sen&amp;author=S+Rahurkar&amp;author=S+Engler&amp;author=N+Menachemi&amp;journal=Am.+J.+Public+Health&amp;volume=102&amp;pages=e7-13&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B36\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Forrest</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kearns</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">36.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Social cohesion, social capital and the neighbourhood. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban Stud.</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">2125–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&amp;author=R+Forrest&amp;author=A+Kearns&amp;journal=Urban+Stud.&amp;volume=38&amp;pages=2125-43&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B37\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fowler</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">37.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollutant deposition and uptake by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Air Pollution and Plant Life</span></span> JNB Bell, M Treshow <span class=\"reference-fpage\">43–</span><span class=\"reference-lpage\">67</span> New York: Wiley, 2nd ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&amp;author=D+Fowler&amp;journal=Air+Pollution+and+Plant+Life&amp;pages=43-67&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B38\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">38.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Creating sense of community: the role of public space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&amp;author=J+Francis&amp;author=B+Giles-Corti&amp;author=L+Wood&amp;author=M+Knuiman&amp;journal=J.+Environ.+Psychol.&amp;volume=32&amp;pages=401-9&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B39\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">LJ</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">39.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">74</span>:<span class=\"reference-fpage\">1570–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&amp;author=J+Francis&amp;author=LJ+Wood&amp;author=M+Knuiman&amp;author=B+Giles-Corti&amp;journal=Soc.+Sci.+Med.&amp;volume=74&amp;pages=1570-77&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B40\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fraser</span> <span class=\"reference-given-names\">SDS</span>, <span class=\"reference-surname\">Lock</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">40.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Cycling for transport and public health: a systematic review of the effect of the environment on cycling. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eur. J. Public Health</span></span> <span class=\"reference-volume\">21</span>:<span class=\"reference-fpage\">738–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&amp;author=SDS+Fraser&amp;author=K+Lock&amp;journal=Eur.+J.+Public+Health&amp;volume=21&amp;pages=738-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B41\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frost</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Goins</span> <span class=\"reference-given-names\">RT</span>, <span class=\"reference-surname\">Hunter</span> <span class=\"reference-given-names\">RH</span>, <span class=\"reference-surname\">Hooker</span> <span class=\"reference-given-names\">SP</span>, <span class=\"reference-surname\">Bryant</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">41.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Effects of the built environment on physical activity of adults living in rural settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Health Promot.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">267–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&amp;author=SS+Frost&amp;author=RT+Goins&amp;author=RH+Hunter&amp;author=SP+Hooker&amp;author=LL+Bryant&amp;journal=Am.+J.+Health+Promot.&amp;volume=24&amp;pages=267-83&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B42\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">42.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Beyond toxicity: human health and the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">234–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=20&amp;pages=234-40&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B43\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">43.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The evidence of nature and the nature of evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">196–</span><span class=\"reference-lpage\">97</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=44&amp;pages=196-97&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B44\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Galea</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Vlahov</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">44.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Urban health: evidence, challenges, and directions. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">341–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&amp;author=S+Galea&amp;author=D+Vlahov&amp;journal=Annu.+Rev.+Public+Health&amp;volume=26&amp;pages=341-65&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B45\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gatersleben</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Andrews</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">45.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> When walking in nature is not restorative—the role of prospect and refuge. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">91–</span><span class=\"reference-lpage\">101</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&amp;author=B+Gatersleben&amp;author=M+Andrews&amp;journal=Health+Place&amp;volume=20&amp;pages=91-101&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B46\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Broomhall</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Collins</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Douglas</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">46.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Increasing walking: How important is distance to, attractiveness, and size of public open space?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&amp;author=B+Giles-Corti&amp;author=MH+Broomhall&amp;author=M+Knuiman&amp;author=C+Collins&amp;author=K+Douglas&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=169-76&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B47\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gonzalez</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>, <span class=\"reference-surname\">Martinsen</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Kirkevold</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">47.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Therapeutic horticulture in clinical depression: a prospective study of active components. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Adv. Nurs.</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">2002–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&amp;author=MT+Gonzalez&amp;author=T+Hartig&amp;author=GG+Patil&amp;author=EW+Martinsen&amp;author=M+Kirkevold&amp;journal=J.+Adv.+Nurs.&amp;volume=66&amp;pages=2002-13&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B48\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">48.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Nature experience in transactional perspective. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&amp;author=T+Hartig&amp;journal=Landsc.+Urban+Plann.&amp;volume=25&amp;pages=17-36&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B49\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>, <span class=\"reference-surname\">Jamner</span> <span class=\"reference-given-names\">LD</span>, <span class=\"reference-surname\">Davis</span> <span class=\"reference-given-names\">DS</span>, <span class=\"reference-surname\">Gärling</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">49.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Tracking restoration in natural and urban field settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">109–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&amp;author=T+Hartig&amp;author=GW+Evans&amp;author=LD+Jamner&amp;author=DS+Davis&amp;author=T+G%C3%A4rling&amp;journal=J.+Environ.+Psychol.&amp;volume=23&amp;pages=109-23&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B50\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Fransson</span> <span class=\"reference-given-names\">U</span>. <span class=\"citation-label\">50.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">82–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&amp;author=T+Hartig&amp;author=U+Fransson&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=82-96&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B51\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Kylin</span> <span class=\"reference-given-names\">C</span>. <span class=\"citation-label\">51.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Residence in the social ecology of stress and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Soc. Iss.</span></span> <span class=\"reference-volume\">59</span>:<span class=\"reference-fpage\">611–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&amp;author=T+Hartig&amp;author=G+Johansson&amp;author=C+Kylin&amp;journal=J.+Soc.+Iss.&amp;volume=59&amp;pages=611-36&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B52\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Mang</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">52.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Restorative effects of natural environment experiences. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&amp;author=T+Hartig&amp;author=M+Mang&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=23&amp;pages=3-26&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B53\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Hagerhall</span> <span class=\"reference-given-names\">CM</span>, <span class=\"reference-surname\">Tomalak</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">53.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: psychological, social and cultural processes. </span> See Ref. 98 <span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B54\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">54.\\u2002</span><span class=\"reference-collab\">Health Counc. Neth</span> <span class=\"reference-year\">2004</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being.</span></span> The Hague: Health Counc. Neth., RMNO <a target=\"xrefwindow\" href=\"http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf\"><span class=\"reference-bold\">http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&amp;publication_year=2004&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B55\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Heinen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">van Wee</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Maat</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">55.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Commuting by bicycle: an overview of the literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Transp. Rev.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&amp;author=E+Heinen&amp;author=B+van+Wee&amp;author=K+Maat&amp;journal=Transp.+Rev.&amp;volume=30&amp;pages=59-96&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B56\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hillsdon</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Panter</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Foster</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">56.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The relationship between access and quality of urban green space with population physical activity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">120</span>:<span class=\"reference-fpage\">1127–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&amp;author=M+Hillsdon&amp;author=J+Panter&amp;author=C+Foster&amp;author=A+Jones&amp;journal=Public+Health&amp;volume=120&amp;pages=1127-32&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B57\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Holt-Lunstad</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">TB</span>, <span class=\"reference-surname\">Layton</span> <span class=\"reference-given-names\">JB</span>. <span class=\"citation-label\">57.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social relationships and mortality risk: a meta-analytic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">PLoS Med.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">e1000316</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&amp;author=J+Holt-Lunstad&amp;author=TB+Smith&amp;author=JB+Layton&amp;journal=PLoS+Med.&amp;volume=7&amp;pages=e1000316&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B58\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Home</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hunziker</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">58.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Psychosocial outcomes as motivations for visiting nearby urban green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">34</span>:<span class=\"reference-fpage\">350–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&amp;author=R+Home&amp;author=M+Hunziker&amp;author=N+Bauer&amp;journal=Leis.+Sci.&amp;volume=34&amp;pages=350-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B59\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Islam</span> <span class=\"reference-given-names\">MN</span>, <span class=\"reference-surname\">Rahman</span> <span class=\"reference-given-names\">K-S</span>, <span class=\"reference-surname\">Bahar</span> <span class=\"reference-given-names\">MM</span>, <span class=\"reference-surname\">Habib</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Ando</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hattori</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">59.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Pollution attenuation by roadside greenbelt in and around urban areas. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">460–</span><span class=\"reference-lpage\">64</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&amp;author=MN+Islam&amp;author=K-S+Rahman&amp;author=MM+Bahar&amp;author=MA+Habib&amp;author=K+Ando&amp;author=N+Hattori&amp;journal=Urban+For.+Urban+Green.&amp;volume=11&amp;pages=460-64&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B60\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jahncke</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Hygge</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Halin</span> <span class=\"reference-given-names\">N</span>, <span class=\"reference-surname\">Green</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Dimberg</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">60.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Open-plan office noise: cognitive performance and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">31</span>:<span class=\"reference-fpage\">373–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&amp;author=H+Jahncke&amp;author=S+Hygge&amp;author=N+Halin&amp;author=AM+Green&amp;author=K+Dimberg&amp;journal=J.+Environ.+Psychol.&amp;volume=31&amp;pages=373-82&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B61\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Janssen</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">LeBlanc</span> <span class=\"reference-given-names\">AG</span>. <span class=\"citation-label\">61.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Behav. Nutr. Phys. Act.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&amp;author=I+Janssen&amp;author=AG+LeBlanc&amp;journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&amp;volume=7&amp;pages=40&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B62\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Fors</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Lindgren</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Wiström</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">62.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Perceived personal safety in relation to urban woodland vegetation—a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&amp;author=M+Jansson&amp;author=H+Fors&amp;author=T+Lindgren&amp;author=B+Wistr%C3%B6m&amp;journal=Urban+For.+Urban+Green.&amp;volume=12&amp;pages=127-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B63\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jim</span> <span class=\"reference-given-names\">CY</span>, <span class=\"reference-surname\">Chen</span> <span class=\"reference-given-names\">WY</span>. <span class=\"citation-label\">63.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Manag.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">665–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&amp;author=CY+Jim&amp;author=WY+Chen&amp;journal=J.+Environ.+Manag.&amp;volume=88&amp;pages=665-76&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B64\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">64.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Psychological benefits of walking: moderation by company and outdoor environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Appl. Psychol. Health Well-Being</span></span> <span class=\"reference-volume\">3</span>:<span class=\"reference-fpage\">261–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&amp;author=M+Johansson&amp;author=T+Hartig&amp;author=H+Staats&amp;journal=Appl.+Psychol.+Health+Well-Being&amp;volume=3&amp;pages=261-80&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B65\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaczynski</span> <span class=\"reference-given-names\">AT</span>, <span class=\"reference-surname\">Henderson</span> <span class=\"reference-given-names\">KA</span>. <span class=\"citation-label\">65.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Environmental correlates of physical activity: a review of evidence about parks and recreation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">315–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&amp;author=AT+Kaczynski&amp;author=KA+Henderson&amp;journal=Leis.+Sci.&amp;volume=29&amp;pages=315-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B66\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">66.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> The role of nature in the context of the workplace. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">193–</span><span class=\"reference-lpage\">201</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&amp;author=R+Kaplan&amp;journal=Landsc.+Urban+Plann.&amp;volume=26&amp;pages=193-201&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B67\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">67.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-source\"><span class=\"reference-italic\">The Experience of Nature: A Psychological Perspective</span></span> New York: Cambridge Univ. Press\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&amp;author=R+Kaplan&amp;author=S+Kaplan&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B68\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">68.\\u2002</span> <span class=\"reference-year\">1995</span>. <span class=\"reference-article-title\"> The restorative benefits of nature: toward an integrative framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&amp;author=S+Kaplan&amp;journal=J.+Environ.+Psychol.&amp;volume=15&amp;pages=169-82&amp;publication_year=1995&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B69\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">69.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Meditation, restoration, and the management of mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">480–</span><span class=\"reference-lpage\">506</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&amp;author=S+Kaplan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=480-506&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B70\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Karl</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Harley</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Emmons</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Thornton</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Guenther</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">70.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">330</span>:<span class=\"reference-fpage\">816–</span><span class=\"reference-lpage\">19</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&amp;author=T+Karl&amp;author=P+Harley&amp;author=L+Emmons&amp;author=B+Thornton&amp;author=A+Guenther&amp;journal=Science&amp;volume=330&amp;pages=816-19&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B71\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaźmierczak</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">71.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The contribution of local parks to neighbourhood social ties. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">109</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">44</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&amp;author=A+Ka%C5%BAmierczak&amp;journal=Landsc.+Urban+Plann.&amp;volume=109&amp;pages=31-44&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B72\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Knopf</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">72.\\u2002</span> <span class=\"reference-year\">1987</span>. <span class=\"reference-article-title\"> Human behavior, cognition, and affect in the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Handbook of Environmental Psychology</span></span> D Stokols, I Altman <span class=\"reference-fpage\">783–</span><span class=\"reference-lpage\">825</span> New York: Wiley\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&amp;author=RC+Knopf&amp;journal=Handbook+of+Environmental+Psychology&amp;pages=783-825&amp;publication_year=1987&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B73\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">73.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Restorative qualities of favorite places. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&amp;author=K+Korpela&amp;author=T+Hartig&amp;journal=J.+Environ.+Psychol.&amp;volume=16&amp;pages=221-33&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B74\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kroll</span> <span class=\"reference-given-names\">JH</span>, <span class=\"reference-surname\">Seinfeld</span> <span class=\"reference-given-names\">JH</span>. <span class=\"citation-label\">74.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">42</span>:<span class=\"reference-fpage\">3593–</span><span class=\"reference-lpage\">624</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&amp;author=JH+Kroll&amp;author=JH+Seinfeld&amp;journal=Atmos.+Environ.&amp;volume=42&amp;pages=3593-624&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B75\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">75.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Aggression and violence in the inner city: effects of environment via mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">543–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=543-71&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B76\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">76.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Environment and crime in the inner city: Does vegetation reduce crime?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">343–</span><span class=\"reference-lpage\">67</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=343-67&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B77\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>, <span class=\"reference-surname\">Coley</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Brunson</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">77.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Fertile ground for community: inner-city neighborhood common spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Community Psychol.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">823–</span><span class=\"reference-lpage\">51</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;author=RL+Coley&amp;author=L+Brunson&amp;journal=Am.+J.+Community+Psychol.&amp;volume=26&amp;pages=823-51&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B78\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">78.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Greenspace and obesity: a systematic review of the evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Obes. Rev.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">e183–</span><span class=\"reference-lpage\">89</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Obes.+Rev.&amp;volume=12&amp;pages=e183-89&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B79\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">79.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">118</span>:<span class=\"reference-fpage\">62–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Landsc.+Urban+Plann.&amp;volume=118&amp;pages=62-69&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B80\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lindheim</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Syme</span> <span class=\"reference-given-names\">SL</span>. <span class=\"citation-label\">80.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Environments, people, and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">335–</span><span class=\"reference-lpage\">59</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&amp;author=R+Lindheim&amp;author=SL+Syme&amp;journal=Annu.+Rev.+Public+Health&amp;volume=4&amp;pages=335-59&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B81\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Liu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Mu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Zhu</span> <span class=\"reference-given-names\">Y-G</span>, <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Arens</span> <span class=\"reference-given-names\">NC</span>. <span class=\"citation-label\">81.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Which ornamental plant species effectively remove benzene from indoor air?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">650–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&amp;author=Y-J+Liu&amp;author=Y-J+Mu&amp;author=Y-G+Zhu&amp;author=H+Ding&amp;author=NC+Arens&amp;journal=Atmos.+Environ.&amp;volume=41&amp;pages=650-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B82\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lloyd</span> <span class=\"reference-given-names\">GER</span>, <span class=\"reference-surname\">Chadwick</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mann</span> <span class=\"reference-given-names\">WN</span>. <span class=\"citation-label\">82.\\u2002</span> <span class=\"reference-year\">1978</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Hippocratic Writings</span></span> Harmondsworth: Penguin\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&amp;author=GER+Lloyd&amp;author=J+Chadwick&amp;author=WN+Mann&amp;publication_year=1978&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B83\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lovasi</span> <span class=\"reference-given-names\">GS</span>, <span class=\"reference-surname\">O\\'Neil-Dunne</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Lu</span> <span class=\"reference-given-names\">JW</span>, <span class=\"reference-surname\">Sheehan</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Perzanowski</span> <span class=\"reference-given-names\">MS</span>. <span class=\"citation-label\">83.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Perspect.</span></span> <span class=\"reference-volume\">121</span>:<span class=\"reference-fpage\">494–</span><span class=\"reference-lpage\">500</span> 00e1–6 \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&amp;author=GS+Lovasi&amp;author=JP+O%27Neil-Dunne&amp;author=JW+Lu&amp;author=D+Sheehan&amp;author=MS+Perzanowski&amp;journal=Environ.+Health+Perspect.&amp;volume=121&amp;pages=494-500&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B84\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">84.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Is green space in the living environment associated with people\\'s feelings of social safety?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">1763–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&amp;author=J+Maas&amp;author=P+Spreeuwenberg&amp;author=M+van+Winsum-Westra&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=PP+Groenewegen&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=1763-77&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B85\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SM</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">85.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Social contacts as a possible mechanism behind the relation between green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">586–</span><span class=\"reference-lpage\">95</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&amp;author=J+Maas&amp;author=SM+van+Dillen&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Health+Place&amp;volume=15&amp;pages=586-95&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B86\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Schellevis</span> <span class=\"reference-given-names\">FG</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">86.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Morbidity is related to a green living environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">967–</span><span class=\"reference-lpage\">73</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;author=FG+Schellevis&amp;author=PP+Groenewegen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=63&amp;pages=967-73&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B87\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">87.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Green space, urbanity, and health: How strong is the relation?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">60</span>:<span class=\"reference-fpage\">587–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=60&amp;pages=587-92&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B88\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">88.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">8</span>:<span class=\"reference-fpage\">206</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=P+Spreeuwenberg&amp;author=PP+Groenewegen&amp;journal=BMC+Public+Health&amp;volume=8&amp;pages=206&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B89\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maller</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Townsend</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">St Leger</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Henderson-Wilson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Pryor</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">89.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context</span></span> Melbourne, Aust.: Deakin Univ.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&amp;author=C+Maller&amp;author=M+Townsend&amp;author=L+St+Leger&amp;author=C+Henderson-Wilson&amp;author=A+Pryor&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B90\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCormack</span> <span class=\"reference-given-names\">GR</span>, <span class=\"reference-surname\">Rock</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Toohey</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Hignell</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">90.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">712–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&amp;author=GR+McCormack&amp;author=M+Rock&amp;author=AM+Toohey&amp;author=D+Hignell&amp;journal=Health+Place&amp;volume=16&amp;pages=712-26&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B91\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCurdy</span> <span class=\"reference-given-names\">LE</span>, <span class=\"reference-surname\">Winterbottom</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Mehta</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Roberts</span> <span class=\"reference-given-names\">JR</span>. <span class=\"citation-label\">91.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Using nature and outdoor activity to improve children\\'s health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Curr. Probl. Pediatr. Adolesc. Health Care</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&amp;author=LE+McCurdy&amp;author=KE+Winterbottom&amp;author=SS+Mehta&amp;author=JR+Roberts&amp;journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&amp;volume=40&amp;pages=102-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B92\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">92.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Is physical activity in natural environments better for mental health than physical activity in other environments?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">130–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=91&amp;pages=130-34&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B93\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">93.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Greenspace, urbanity and health: relationships in England. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">61</span>:<span class=\"reference-fpage\">681–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=61&amp;pages=681-83&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B94\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">94.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Effect of exposure to natural environment on health inequalities: an observational population study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">372</span>:<span class=\"reference-fpage\">1655–</span><span class=\"reference-lpage\">60</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=Lancet&amp;volume=372&amp;pages=1655-60&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B95\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitrione</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">95.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Therapeutic responses to natural environments: using gardens to improve health care. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Minn. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&amp;author=S+Mitrione&amp;journal=Minn.+Med.&amp;volume=91&amp;pages=31-34&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B96\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Muñoz</span> <span class=\"reference-given-names\">S-A</span>. <span class=\"citation-label\">96.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Children in the Outdoors: A Literature Review</span></span> Forres, Scotl.: Sustain. Dev. Res. Cent.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&amp;author=S-A+Mu%C3%B1oz&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B97\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nieminen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Martelin</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Koskinen</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Aro</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Alanen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hyyppä</span> <span class=\"reference-given-names\">MT</span>. <span class=\"citation-label\">97.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social capital as a determinant of self-rated health and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Public Health</span></span> <span class=\"reference-volume\">55</span>:<span class=\"reference-fpage\">531–</span><span class=\"reference-lpage\">42</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&amp;author=T+Nieminen&amp;author=T+Martelin&amp;author=S+Koskinen&amp;author=H+Aro&amp;author=E+Alanen&amp;author=MT+Hyypp%C3%A4&amp;journal=Int.+J.+Public+Health&amp;volume=55&amp;pages=531-42&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B98\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Sangster</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Gallis</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">98.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests, Trees and Human Health</span></span> Dordrecht: Springer\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&amp;author=K+Nilsson&amp;author=M+Sangster&amp;author=C+Gallis&amp;author=T+Hartig&amp;author=S+de+Vries&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B99\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">ME</span>, <span class=\"reference-surname\">Berglund</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">99.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Soundscape quality in suburban green areas and city parks. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Acta Acustica United Acustica</span></span> <span class=\"reference-volume\">92</span>:<span class=\"reference-fpage\">903–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&amp;author=ME+Nilsson&amp;author=B+Berglund&amp;journal=Acta+Acustica+United+Acustica&amp;volume=92&amp;pages=903-11&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B100\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>, <span class=\"reference-surname\">Crane</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Stevens</span> <span class=\"reference-given-names\">JC</span>. <span class=\"citation-label\">100.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Air pollution removal by urban trees and shrubs in the United States. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">115–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&amp;author=DJ+Nowak&amp;author=DE+Crane&amp;author=JC+Stevens&amp;journal=Urban+For.+Urban+Green.&amp;volume=4&amp;pages=115-23&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B101\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Olmsted</span> <span class=\"reference-given-names\">FL</span>. <span class=\"citation-label\">101.\\u2002</span> <span class=\"reference-year\">1970 (1870)</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Public Parks and the Enlargement of Towns</span></span> New York: Arno (Cambridge, MA: Riverside)\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&amp;author=FL+Olmsted&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B102\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Orwell</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Burchett</span> <span class=\"reference-given-names\">MD</span>, <span class=\"reference-surname\">Tarran</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Torpy</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">102.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Water Air Soil Poll.</span></span> <span class=\"reference-volume\">177</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&amp;author=RL+Orwell&amp;author=RA+Wood&amp;author=MD+Burchett&amp;author=J+Tarran&amp;author=F+Torpy&amp;journal=Water+Air+Soil+Poll.&amp;volume=177&amp;pages=59-80&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B103\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Paoletti</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Bardelli</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Giovannini</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Pecchioli</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">103.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Air quality impact of an urban park over time. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Procedia Environ. Sci.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">10–</span><span class=\"reference-lpage\">16</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&amp;author=E+Paoletti&amp;author=T+Bardelli&amp;author=G+Giovannini&amp;author=L+Pecchioli&amp;journal=Procedia+Environ.+Sci.&amp;volume=4&amp;pages=10-16&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B104\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Powell</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Paluch</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Blair</span> <span class=\"reference-given-names\">SN</span>. <span class=\"citation-label\">104.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Physical activity for health: What Kind? How much? How Intense? On Top of What?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">349–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&amp;author=KE+Powell&amp;author=AE+Paluch&amp;author=SN+Blair&amp;journal=Annu.+Rev.+Public+Health&amp;volume=32&amp;pages=349-65&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B105\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Peacock</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Sellens</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Griffin</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">105.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The mental and physical health outcomes of green exercise. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Environ. Health Res.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">319–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&amp;author=J+Pretty&amp;author=J+Peacock&amp;author=M+Sellens&amp;author=M+Griffin&amp;journal=Int.+J.+Environ.+Health+Res.&amp;volume=15&amp;pages=319-37&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B106\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Proctor</span> <span class=\"reference-given-names\">JD</span>. <span class=\"citation-label\">106.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> The social construction of nature: relativist accusations, pragmatist and critical realist responses. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Assoc. Am. Geogr.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">352–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&amp;author=JD+Proctor&amp;journal=Ann.+Assoc.+Am.+Geogr.&amp;volume=88&amp;pages=352-76&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B107\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">107.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Gender differences in relationships between urban green space and health in the United Kingdom. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">71</span>:<span class=\"reference-fpage\">568–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=71&amp;pages=568-75&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B108\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Astell-Burt</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">108.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Green cities and health: a question of scale?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">160–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;author=T+Hartig&amp;author=S+de+Vries&amp;author=T+Astell-Burt&amp;author=H+Frumkin&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=66&amp;pages=160-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B109\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Pearce</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kingham</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">109.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Role of physical activity in the relationship between urban green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">127</span>:<span class=\"reference-fpage\">318–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&amp;author=EA+Richardson&amp;author=J+Pearce&amp;author=R+Mitchell&amp;author=S+Kingham&amp;journal=Public+Health&amp;volume=127&amp;pages=318-24&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B110\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rios</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Aiken</span> <span class=\"reference-given-names\">LS</span>, <span class=\"reference-surname\">Zautra</span> <span class=\"reference-given-names\">AJ</span>. <span class=\"citation-label\">110.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Behav. Med.</span></span> <span class=\"reference-volume\">43</span>:<span class=\"reference-fpage\">50–</span><span class=\"reference-lpage\">61</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&amp;author=R+Rios&amp;author=LS+Aiken&amp;author=AJ+Zautra&amp;journal=Ann.+Behav.+Med.&amp;volume=43&amp;pages=50-61&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B111\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rose</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">111.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Sick individuals and sick populations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Epidemiol.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&amp;author=G+Rose&amp;journal=Int.+J.+Epidemiol.&amp;volume=30&amp;pages=427-32&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B112\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sartelet</span> <span class=\"reference-given-names\">KN</span>, <span class=\"reference-surname\">Couvidat</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Seigneur</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roustan</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">112.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Impact of biogenic emissions on air quality over Europe and North America. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">53</span>:<span class=\"reference-fpage\">131–</span><span class=\"reference-lpage\">41</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&amp;author=KN+Sartelet&amp;author=F+Couvidat&amp;author=C+Seigneur&amp;author=Y+Roustan&amp;journal=Atmos.+Environ.&amp;volume=53&amp;pages=131-41&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B113\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Setälä</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Viippola</span> <span class=\"reference-given-names\">V</span>, <span class=\"reference-surname\">Rantalainen</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Pennanen</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Yli-Pelkonen</span> <span class=\"reference-given-names\">V</span>. <span class=\"citation-label\">113.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Does urban vegetation mitigate air pollution in northern conditions?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">183</span>:<span class=\"reference-fpage\">104–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&amp;author=H+Set%C3%A4l%C3%A4&amp;author=V+Viippola&amp;author=AL+Rantalainen&amp;author=A+Pennanen&amp;author=V+Yli-Pelkonen&amp;journal=Environ.+Pollut.&amp;volume=183&amp;pages=104-12&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B114\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Simpson</span> <span class=\"reference-given-names\">JR</span>, <span class=\"reference-surname\">McPherson</span> <span class=\"reference-given-names\">EG</span>. <span class=\"citation-label\">114.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">69–</span><span class=\"reference-lpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&amp;author=JR+Simpson&amp;author=EG+McPherson&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=69-74&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B115\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">115.\\u2002</span> <span class=\"reference-year\">1988</span>. <span class=\"reference-article-title\"> Perception and aesthetics of the urban environment: review of the role of vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">106</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&amp;author=RC+Smardon&amp;journal=Landsc.+Urban+Plann.&amp;volume=15&amp;pages=85-106&amp;publication_year=1988&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B116\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Van Gemerden</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">116.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&amp;author=H+Staats&amp;author=E+Van+Gemerden&amp;author=T+Hartig&amp;journal=Leis.+Sci.&amp;volume=32&amp;pages=401-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B117\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Stigsdotter</span> <span class=\"reference-given-names\">UK</span>, <span class=\"reference-surname\">Ekholm</span> <span class=\"reference-given-names\">O</span>, <span class=\"reference-surname\">Schipperijn</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Toftager</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Kamper-Jørgensen</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Randrup</span> <span class=\"reference-given-names\">TB</span>. <span class=\"citation-label\">117.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">411–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&amp;author=UK+Stigsdotter&amp;author=O+Ekholm&amp;author=J+Schipperijn&amp;author=M+Toftager&amp;author=F+Kamper-J%C3%B8rgensen&amp;author=TB+Randrup&amp;journal=Scand.+J.+Public+Health&amp;volume=38&amp;pages=411-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B118\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sugiyama</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Leslie</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Owen</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">118.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">62</span>:<span class=\"reference-fpage\">e9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&amp;author=T+Sugiyama&amp;author=E+Leslie&amp;author=B+Giles-Corti&amp;author=N+Owen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=62&amp;pages=e9&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B119\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Takano</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Nakamura</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Watanabe</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">119.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">56</span>:<span class=\"reference-fpage\">913–</span><span class=\"reference-lpage\">18</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&amp;author=T+Takano&amp;author=K+Nakamura&amp;author=M+Watanabe&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=56&amp;pages=913-18&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B120\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tallis</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Sinnett</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">120.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">38</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&amp;author=M+Tallis&amp;author=G+Taylor&amp;author=D+Sinnett&amp;author=P+Freer-Smith&amp;journal=Landsc.+Urban+Plann.&amp;volume=103&amp;pages=129-38&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B121\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>. <span class=\"citation-label\">121.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Children with attention deficits concentrate better after walk in the park. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Atten. Disord.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">402–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;journal=J.+Atten.+Disord.&amp;volume=12&amp;pages=402-9&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B122\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">122.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Views of nature and self-discipline: evidence from inner city children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">49–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=J.+Environ.+Psychol.&amp;volume=22&amp;pages=49-63&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B123\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Thompson Coon</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Boddy</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Stein</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Whear</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Depledge</span> <span class=\"reference-given-names\">MH</span>. <span class=\"citation-label\">123.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">1761–</span><span class=\"reference-lpage\">72</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&amp;author=J+Thompson+Coon&amp;author=K+Boddy&amp;author=K+Stein&amp;author=R+Whear&amp;author=J+Barton&amp;author=MH+Depledge&amp;journal=Environ.+Sci.+Technol.&amp;volume=45&amp;pages=1761-72&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B124\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tsunetsugu</span> <span class=\"reference-given-names\">Y</span>, <span class=\"reference-surname\">Park</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Miyazaki</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">124.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Prevent. Med.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">27–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&amp;author=Y+Tsunetsugu&amp;author=B+Park&amp;author=Y+Miyazaki&amp;journal=Environ.+Health+Prevent.+Med.&amp;volume=15&amp;pages=27-37&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B125\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">125.\\u2002</span> <span class=\"reference-year\">1979</span>. <span class=\"reference-article-title\"> Visual landscapes and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Res.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&amp;author=RS+Ulrich&amp;journal=Landsc.+Res.&amp;volume=4&amp;pages=17-23&amp;publication_year=1979&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B126\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">126.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Aesthetic and affective response to natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Human Behaviour and Environment: Advances in Theory and Research.</span></span> Volume\\n<span class=\"reference-volume\">6</span> <span class=\"reference-source\"><span class=\"reference-italic\">Behaviour and the Natural Environment</span></span>, ed. I\\nAltman, JF Wohlwill <span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">125</span> New York: Plenum\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&amp;author=RS+Ulrich&amp;journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&amp;pages=85-125&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B127\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Simons</span> <span class=\"reference-given-names\">RF</span>, <span class=\"reference-surname\">Losito</span> <span class=\"reference-given-names\">BD</span>, <span class=\"reference-surname\">Fiorito</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Miles</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Zelson</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">127.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Stress recovery during exposure to natural and urban environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">201–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&amp;author=RS+Ulrich&amp;author=RF+Simons&amp;author=BD+Losito&amp;author=E+Fiorito&amp;author=MA+Miles&amp;author=M+Zelson&amp;journal=J.+Environ.+Psychol.&amp;volume=11&amp;pages=201-30&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B128\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Cauwenberg</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">De Bourdeaudhuij</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">De Meester</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Van Dyck</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Salmon</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">128.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Relationship between the physical environment and physical activity in older adults: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">458–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&amp;author=J+Van+Cauwenberg&amp;author=I+De+Bourdeaudhuij&amp;author=F+De+Meester&amp;author=D+Van+Dyck&amp;author=J+Salmon&amp;journal=Health+Place&amp;volume=17&amp;pages=458-69&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B129\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Custers</span> <span class=\"reference-given-names\">MHG</span>. <span class=\"citation-label\">129.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Gardening promotes neuroendocrine and affective restoration from stress. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Health Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&amp;author=AE+Van+den+Berg&amp;author=MHG+Custers&amp;journal=J.+Health+Psychol.&amp;volume=16&amp;pages=3-11&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B130\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">130.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Green space as a buffer between stressful life events and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">70</span>:<span class=\"reference-fpage\">1203–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&amp;author=AE+Van+den+Berg&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Soc.+Sci.+Med.&amp;volume=70&amp;pages=1203-10&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B131\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>. <span class=\"citation-label\">131.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health</span></span> <span class=\"reference-volume\">9</span>:<span class=\"reference-fpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&amp;author=AE+Van+den+Berg&amp;author=M+van+Winsum-Westra&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;journal=Environ.+Health&amp;volume=9&amp;pages=74&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B132\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Herzele</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Podesta</span> <span class=\"reference-given-names\">MTC</span>, <span class=\"reference-surname\">van Zon</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">132.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: the challenge of linking practice and research. </span> See Ref. 98 <span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B133\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Montarzino</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">133.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> The childhood factor: adult visits to green places and the significance of childhood experience. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">111–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&amp;author=C+Ward+Thompson&amp;author=P+Aspinall&amp;author=A+Montarzino&amp;journal=Environ.+Behav.&amp;volume=40&amp;pages=111-43&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B134\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roe</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Clow</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Miller</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">134.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">105</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">29</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&amp;author=C+Ward+Thompson&amp;author=J+Roe&amp;author=P+Aspinall&amp;author=R+Mitchell&amp;author=A+Clow&amp;author=D+Miller&amp;journal=Landsc.+Urban+Plann.&amp;volume=105&amp;pages=221-29&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B135\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">135.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Nearby nature—a buffer of life stress among rural children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">311–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&amp;author=NM+Wells&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=35&amp;pages=311-30&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B136\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Lekies</span> <span class=\"reference-given-names\">KS</span>. <span class=\"citation-label\">136.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Nature and the life course: pathways from childhood nature experiences to adult environmentalism. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Child. Youth Environ.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&amp;author=NM+Wells&amp;author=KS+Lekies&amp;journal=Child.+Youth+Environ.&amp;volume=16&amp;pages=1-24&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B137\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Whitelaw</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">137.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Crit. Public Health</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&amp;author=S+Whitelaw&amp;journal=Crit.+Public+Health&amp;volume=22&amp;pages=427-40&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B138\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">138.\\u2002</span><span class=\"reference-collab\">WHO (World Health Organ.)</span> <span class=\"reference-year\">1946</span>. <span class=\"reference-article-title\"> <span class=\"reference-italic\">Preamble to the Constitution of the World Health Organization</span> as adopted by the International Health Conference. </span> New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&amp;publication_year=1946&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B139\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wilson</span> <span class=\"reference-given-names\">SJ</span>, <span class=\"reference-surname\">Lipsey</span> <span class=\"reference-given-names\">MW</span>. <span class=\"citation-label\">139.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eval. Program Plann.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&amp;author=SJ+Wilson&amp;author=MW+Lipsey&amp;journal=Eval.+Program+Plann.&amp;volume=23&amp;pages=1-12&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B140\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Yoo</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Kwon</span> <span class=\"reference-given-names\">YJ</span>, <span class=\"reference-surname\">Son</span> <span class=\"reference-given-names\">KC</span>, <span class=\"reference-surname\">Kays</span> <span class=\"reference-given-names\">SJ</span>. <span class=\"citation-label\">140.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Am. Soc. Hort. Sci.</span></span> <span class=\"reference-volume\">131</span>:<span class=\"reference-fpage\">452–</span><span class=\"reference-lpage\">58</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&amp;author=MH+Yoo&amp;author=YJ+Kwon&amp;author=KC+Son&amp;author=SJ+Kays&amp;journal=J.+Am.+Soc.+Hort.+Sci.&amp;volume=131&amp;pages=452-58&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B141\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Zick</span> <span class=\"reference-given-names\">CD</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">KR</span>, <span class=\"reference-surname\">Kowaleski-Jones</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Uno</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Merrill</span> <span class=\"reference-given-names\">BJ</span>. <span class=\"citation-label\">141.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Harvesting more than vegetables: the potential weight control benefits of community gardening. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">e1–</span><span class=\"reference-lpage\">6</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&amp;author=CD+Zick&amp;author=KR+Smith&amp;author=L+Kowaleski-Jones&amp;author=C+Uno&amp;author=BJ+Merrill&amp;journal=Am.+J.+Public+Health&amp;volume=103&amp;pages=e1-6&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li></ol>\\n</div>\\n</div>\\n<div id=\"cited\" class=\"citations hidden-js-div tabbedsection tab-pane\">\\n<div class=\"hiddenjsdiv\" id=\"itemIdForCitations\" data-doi=\"10.1146/annurev-publhealth-032013-182443\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<img class=\"citingArticlesLoading\" src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<div id=\"citationContent\"></div>\\n</div>\\n<div class=\"hiddenjsdiv itemmetadata\">\\n<div class=\"metadata_title\">Nature and Health</div>\\n<div class=\"metadata_citation\">\\n<span>Annual Review of Public Health <span class=\"citationvolume\">35</span></span><span>, 207</span><span> (2014)</span><span>; <a href=\"https://doi.org/10.1146/annurev-publhealth-032013-182443\" rel=\"external\" class=\"externallink\" title=\"undefined - opens in new window/tab\" target=\"_blank\">https://doi.org/10.1146/annurev-publhealth-032013-182443</a></span>\\n</div>\\n<div class=\"metadata_itemWebId\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n</div>\\n<div id=\"dataandmedia\" class=\"dataandmedia tabbedsection hidden-js-div tab-pane\" data-fulltexturl=\"\" data-fulltextexpandlinktext=\"Toggle display:\" data-hideinlinetablesbydefault=\"false\">\\n\\n\\n\\n<div id=\"hiddenDataMediaWebid\" class=\"hiddenjsdiv\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"itemDataMediaLoading\">\\n<img src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<p>Data &amp; Media loading...</p>\\n</div>\\n<div id=\"datamediacontent\"></div>\\n</div>\\n<div id=\"supplementary_data\" class=\"supplementary-container tabbedsection hidden-js-div tab-pane\">\\n<div id=\"supplementary_data_contents\" data-statslogurl=\"/statslogredirect\">\\n<h4 id=\"supp_title_1\" class=\"supplementary-item-heading-show\" style=\"padding-top:10px;\">Supplementary Data</h4>\\n<ul class=\"articleMetadata list-unstyled col-sm-8 pull-left\" style=\"margin-bottom:0;padding-bottom:0;\">\\n<li style=\"margin-bottom:0;\">\\n<p></p><p>Download <a href=\"https://www.annualreviews.org/deliver/fulltext/publhealth/35/1/pu35_hartig_supmat.pdf?itemId=/content/suppdata/10.1146/annurev-publhealth-032013-182443/1\"><strong>Supplemental References</strong></a> (PDF)</p><p><strong>Audio:</strong> Terry Hartig, Richard Mitchell, Sjerp de Vries, and Howard Frumkin discuss the current state of research on the impact that contact with nature has on individual and population health.</p><p></p><div frameborder=\"0\" src=\"https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/149328804&amp;color=0058a0&amp;auto_play=false&amp;hide_related=false&amp;show_artwork=true\" data-original-tag=\"iframe\">\\n  \\n\\n  \\n  <link rel=\"dns-prefetch\" href=\"https://api-widget.soundcloud.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://sb.scorecardresearch.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://api.soundcloud.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://va.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i1.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i2.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i3.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" 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list-unstyled\">\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052020-110732\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-052020-110732\" dir=\"auto\" class=\"\"> \\nSocial Connection as a Public Health Issue: The Evidence and a Systemic Framework for Prioritizing the “Social” in Social Determinants of Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\">Julianne Holt-Lunstad</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">193–213\\n(21)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102529\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-090419-102529\" dir=\"auto\" class=\"\"> \\nUnderstanding and Responding to Health Literacy as a Social Determinant of Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Don Nutbeam</span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\nJane E. Lloyd</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">159–173\\n(15)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-012420-105026\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-012420-105026\" dir=\"auto\" class=\"\"> \\nExtreme Weather and Climate Change: Population Health and Health System Implications\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Kristie L. 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Reid</span><span class=\"author-list__item \">,\\nShubhayu Saha</span><span class=\"author-list__item \">,\\nJune Spector</span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\nPeter Berry</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">293–315\\n(23)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052620-103528\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-052620-103528\" dir=\"auto\" class=\"\"> \\nEliminating Explicit and Implicit Biases in Health Care: Evidence and Research Needs\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Monica B. 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Chin</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">477–501\\n(25)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102409\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-090419-102409\" dir=\"auto\" class=\"\"> \\nClimate Change Disinformation and How to Combat It\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\">Stephan Lewandowsky</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">1–21\\n(21)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li>\\n</li>\\n</ul>\\n<form class=\"ahahTocArticles\">\\n\\n\\n\\n</form>\\n</div> \\n\\n<div id=\"hiddenmostviewedparent\" class=\"hiddenjsdiv hidden-js-div\">content/journals/publhealth</div>\\n<div id=\"hiddenmostviewedparenttype\" class=\"hiddenjsdiv hidden-js-div\">Journal</div>\\n<div id=\"hiddenmostviewednumber\" class=\"hiddenjsdiv hidden-js-div\">5</div>\\n<div id=\"hiddenmostviewednumbershown\" class=\"hiddenjsdiv hidden-js-div\">3</div>\\n<div id=\"hiddenmostviewedemptymessage\" class=\"hiddenjsdiv hidden-js-div\">false</div>\\n<div id=\"hiddenmostviewedlanguage\" class=\"hiddenjsdiv hidden-js-div\">en</div>\\n\\n</div>\\n</div>\\n<div class=\"mostcitedcontainer panel panel-default \">\\n<div class=\"panel-heading\">\\n<h2 class=\"panel-title\">\\nMost Cited\\n<span class=\"rssicon\">\\n<a href=\"https://www.annualreviews.org/rss/content/journals/publhealth/mostcitedarticles?fmt=rss\" class=\"rssiconheader rssFeed externallink\" title=\"Subscribe to most Cited RSS feed\">\\n<i class=\"fa fa-rss\"></i>\\n<span class=\"sr-only\">Most Cited RSS feed</span>\\n</a>\\n</span>\\n</h2>\\n</div>\\n<div class=\"panel-body\">\\n<div id=\"mostcited\">\\n<ul class=\"separated-list list-unstyled\">\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.19.1.173_1\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.19.1.173\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.19.1.173\" dir=\"auto\" class=\"\"> \\nREVIEW OF COMMUNITY-BASED RESEARCH: Assessing Partnership Approaches to Improve Public Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Barbara+A.+Israel&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Barbara A. Israel</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Amy+J.+Schulz&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Amy J. Schulz</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Edith+A.+Parker&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Edith A. Parker</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Adam+B.+Becker&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Adam B. Becker</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 19 \\n(1998), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">173–202\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-032013-182443_2\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-032013-182443\" dir=\"auto\" class=\"\"> \\nNature and Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Terry+Hartig&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Terry Hartig</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Richard+Mitchell&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Richard Mitchell</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Sjerp+de+Vries&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Sjerp de Vries</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Howard+Frumkin&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Howard Frumkin</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 35 \\n(2014), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">207–228\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031912-114409_3\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031912-114409\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031912-114409\" dir=\"auto\" class=\"\"> \\nThe Epidemiology of Depression Across Cultures\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Ronald+C.+Kessler&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Ronald C. Kessler</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Evelyn+J.+Bromet&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Evelyn J. Bromet</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 34 \\n(2013), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">119–138\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-040218-043750_4\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-040218-043750\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-040218-043750\" dir=\"auto\" class=\"\"> \\nRacism and Health: Evidence and Needed Research\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=David+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David R. Williams</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Jourdyn+A.+Lawrence&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Jourdyn A. Lawrence</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Brigette+A.+Davis&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Brigette A. Davis</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 40 \\n(2019), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">105–125\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.18.1.341_5\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.18.1.341\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.18.1.341\" dir=\"auto\" class=\"\"> \\nMeasuring Social Class in US Public Health Research: Concepts, Methodologies, and Guidelines\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=N.+Krieger&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">N. Krieger</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=D.+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">D. R. Williams</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=N.+E.+Moss&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">N. E. Moss</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 18 \\n(1997), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">341–378\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031210-101218_6\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031210-101218\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031210-101218\" dir=\"auto\" class=\"\"> \\nThe Social Determinants of Health: Coming of Age\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Paula+Braveman&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Paula Braveman</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Susan+Egerter&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Susan Egerter</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=David+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David R. Williams</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 32 \\n(2011), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">381–398\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.012809.103604_7\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.012809.103604\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.012809.103604\" dir=\"auto\" class=\"\"> \\nThe Role of Behavioral Science Theory in Development and Implementation of Public Health Interventions\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Karen+Glanz&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Karen Glanz</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Donald+B.+Bishop&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Donald B. Bishop</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 31 \\n(2010), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">399–418\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev.pu.15.050194.000543_8\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.pu.15.050194.000543\" data-itemid=\"/content/journals/10.1146/annurev.pu.15.050194.000543\" dir=\"auto\" class=\"\"> \\nAcute Respiratory Effects of Particulate Air Pollution\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=D.+W.+Dockery&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">D. W. Dockery</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=C.+A.+Pope&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">C. A. Pope</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 15 \\n(1994), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">107–132\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-032315-021402_9\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032315-021402\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-032315-021402\" dir=\"auto\" class=\"\"> \\nMediation Analysis: A Practitioner\\'s Guide\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\"><a href=\"https://www.annualreviews.org/search?value1=Tyler+J.+VanderWeele&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Tyler J. VanderWeele</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 37 \\n(2016), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">17–32\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031914-122957_10\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031914-122957\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031914-122957\" dir=\"auto\" class=\"\"> \\nThe Prescription Opioid and Heroin Crisis: A Public Health Approach to an Epidemic of Addiction\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Andrew+Kolodny&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Andrew Kolodny</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=David+T.+Courtwright&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David T. 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outline: 0px; z-index: 1000; position: relative;\"><div class=\"ui-dialog-titlebar ui-widget-header ui-corner-all ui-helper-clearfix\"><span id=\"ui-id-5\" class=\"ui-dialog-title\">&nbsp;</span><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"ui-dialog-titlebar-close ui-corner-all\" role=\"button\"><span class=\"ui-icon ui-icon-closethick\">close</span></a></div><div id=\"multimediadialog\" class=\"ui-dialog-content ui-widget-content\"></div><div class=\"ui-resizable-handle ui-resizable-n\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-e\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-s\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-w\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-se ui-icon ui-icon-gripsmall-diagonal-se ui-icon-grip-diagonal-se\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-sw\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-ne\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-nw\" style=\"z-index: 1000;\"></div></div>\\n</body></html>' rawHtml=None links=None extract=None json=<function BaseModel.json at 0x000001C313E803A0> screenshot=None metadata={'favicon': 'https://www.annualreviews.org/upload/favicon.ico', 'dc.identifier': 'doi:10.1146/annurev-publhealth-032013-182443', 'dcType': 'Text', 'citation_title': 'Nature and Health', 'citation_volume': '35', 'stats-meta': 'stats', 'citation_firstpage': '207', 'citation_lastpage': '228', 'citation_online_date': '2014/03/18', 'citation_author_institution': ['1Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: terry.hartig@ibf.uu.se', '2Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: Richard.Mitchell@glasgow.ac.uk', '3Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: sjerp.devries@wur.nl', '4School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: frumkin@uw.edu'], 'citation_abstract': 'Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum]', 'ogDescription': 'Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum]', 'title': 'Nature and Health | Annual Reviews', 'shareaholic:site_id': '5a02bf1fca9627aa4ef195830cf8e332', 'twitter:card': 'summary_large_image', 'dc.type': 'Text', 'citation_issue': 'Volume 35, 2014', 'robots': ['NOODP,noarchive', 'noindex, follow'], 'dc.creator': ['Terry Hartig', 'Richard Mitchell', 'Sjerp de Vries', 'Howard Frumkin'], 'citation_issn': ['0163-7525', '1545-2093'], 'dc.publisher': 'Annual Reviews', 'citation_year': '2014', 'citation_publication_date': '2014/03/18', 'citation_doi': '10.1146/annurev-publhealth-032013-182443', 'dc.date': '2014/03/18', 'viewport': ['width=device-width, initial-scale=1', 'width=device-width,minimum-scale=1,maximum-scale=1,user-scalable=no'], 'citation_author': ['Terry Hartig', 'Richard Mitchell', 'Sjerp de Vries', 'Howard Frumkin'], 'citation_publisher': 'Annual Reviews', 'dc.title': 'Nature and Health', 'description': 'Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum]', 'dcDate': '2014/03/18', 'citation_date': '2014/03/18', 'language': 'en', 'author': 'Terry Hartig|Richard Mitchell|Sjerp de Vries|Howard Frumkin', 'citation_abstract_html_url': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443', 'citation_journal_title': 'Annual Review of Public Health', 'scrapeId': 'eedfb00d-eb6c-47ea-9b82-202ae051831d', 'sourceURL': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443', 'url': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443', 'statusCode': 200, 'contentType': 'text/html;charset=UTF-8', 'proxyUsed': 'basic', 'creditsUsed': 1} actions=None title=None description=None changeTracking=None success=True warning=None error=None\n"
     ]
    }
   ],
   "source": [
    "# Scrape a website:\n",
    "scrape_result = app.scrape_url(url, formats=['markdown', 'html'])\n",
    "print(scrape_result)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 71,
   "id": "9dc9781b",
   "metadata": {},
   "outputs": [],
   "source": [
    "import re"
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  },
  {
   "cell_type": "code",
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       "ScrapeResponse(url=None, markdown='We use [cookies](https://www.annualreviews.org/cookie-info) to track usage and preferences. [I Understand](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443)\\n\\n1932\\n\\n### [Annual Review of Public Health](https://www.annualreviews.org/content/journals/publhealth)\\n\\n[**Volume 35, 2014**](https://www.annualreviews.org/content/journals/publhealth/35/1 \"\")\\n\\n#### Review Article\\n\\n#### Free\\n\\n# Nature and Health\\n\\n- [Terry Hartig](https://www.annualreviews.org/search?value1=Terry+Hartig&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 1, [Richard Mitchell](https://www.annualreviews.org/search?value1=Richard+Mitchell&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 2, [Sjerp de Vries](https://www.annualreviews.org/search?value1=Sjerp+de+Vries&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 3\\xa0and [Howard Frumkin](https://www.annualreviews.org/search?value1=Howard+Frumkin&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 4\\n- [View Affiliations\\\\\\\\\\n\\\\\\\\\\nHide Affiliations](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#)\\n\\n\\n\\n1Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: [terry.hartig@ibf.uu.se](mailto:terry.hartig@ibf.uu.se)2Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: [Richard.Mitchell@glasgow.ac.uk](mailto:Richard.Mitchell@glasgow.ac.uk)3Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: [sjerp.devries@wur.nl](mailto:sjerp.devries@wur.nl)4School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: [frumkin@uw.edu](mailto:frumkin@uw.edu)\\n\\n- Vol. 35:207-228\\n(Volume publication date March 2014)\\n[https://doi.org/10.1146/annurev-publhealth-032013-182443](https://doi.org/10.1146/annurev-publhealth-032013-182443)\\n- First published as a Review in Advance on\\nJanuary 02, 2014\\n\\n- © Annual Reviews\\n\\n\\n### Abstract\\n\\nUrbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[ [Erratum](http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001)\\\\]\\n\\n**Keyword(s):**[community gardens](https://www.annualreviews.org/search?value1=%22community+gardens%22&option1=pub_keyword \"community gardens\"),\\xa0[green infrastructure](https://www.annualreviews.org/search?value1=%22green+infrastructure%22&option1=pub_keyword \"green infrastructure\"),\\xa0[green space](https://www.annualreviews.org/search?value1=%22green+space%22&option1=pub_keyword \"green space\"),\\xa0[greenspace](https://www.annualreviews.org/search?value1=%22greenspace%22&option1=pub_keyword \"greenspace\"),\\xa0[landscape](https://www.annualreviews.org/search?value1=%22landscape%22&option1=pub_keyword \"landscape\"),\\xa0[parks](https://www.annualreviews.org/search?value1=%22parks%22&option1=pub_keyword \"parks\"),\\xa0[urban forests](https://www.annualreviews.org/search?value1=%22urban+forests%22&option1=pub_keyword \"urban forests\")\\n\\n### Associated Article\\n\\nThere are media items related to this article:\\n\\n[Nature and Health](https://www.annualreviews.org/content/multimedia/10.1146/do.multimedia.2014.05.13.269)\\n\\n### Erratum\\n\\nAn erratum has been published for this article:\\n\\n[Nature and Health](https://www.annualreviews.org/content/journals/10.1146/annurev-pu-35-102115-200001)\\n\\n![Loading](https://www.annualreviews.org/images/jp/spinner.gif)\\n\\nArticle metrics loading...\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n2014-03-18\\n\\n2025-07-29\\n\\n[Download as PowerPoint](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#)\\n\\n- ISSN: 0163-7525, Online ISSN: 1545-2093\\n- DOI: http://dx.doi.org/10.1146/annurev-publhealth-032013-182443\\n- Volume 35, Issue 1, pages 207-228\\n- Copyright © 2014 by Annual Reviews. All rights reserved\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\n# Nature and Health\\n\\nTerry Hartig\\n1\\n; Richard Mitchell\\n2\\n; Sjerp de Vries\\n3\\n; Howard Frumkin\\n4\\n\\n\\n1Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: [terry.hartig@ibf.uu.se](mailto:terry.hartig@ibf.uu.se) 2Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: [Richard.Mitchell@glasgow.ac.uk](mailto:Richard.Mitchell@glasgow.ac.uk) 3Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: [sjerp.devries@wur.nl](mailto:sjerp.devries@wur.nl) 4School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: [frumkin@uw.edu](mailto:frumkin@uw.edu)\\n\\nABSTRACT\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nUrbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[ [Erratum](http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001)\\\\]\\n\\nKeywords\\n\\n- [greenspace](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22greenspace%22),\\n- [green space](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22green%20space%22),\\n- [green infrastructure](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22green%20infrastructure%22),\\n- [landscape](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22landscape%22),\\n- [parks](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22parks%22),\\n- [urban forests](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22urban%20forests%22),\\n- [community gardens](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22community%20gardens%22)\\n\\nINTRODUCTION\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nThe public health field views the natural environment with ambivalence. Infectious agents, extreme weather, and geological events regularly sicken, injure, and kill people, often en masse. Yet, people cannot remain healthy without clean air, clean water, food, and other resources provided as “ecosystem services.” Enormous amounts of research inform these contrasting perspectives, describing how the natural environment harms humans, how health depends on the natural environment, and how human impacts on the natural environment rebound on health.\\n\\nA theme that has become increasingly distinct over recent years concerns the natural environment, or “nature,” perceived, valued, and engaged with as such, particularly in urbanized societies. This research focuses primarily on benefits of contact with nature. Key segments of this literature are young, but central ideas, such as the link between vegetation and air quality, have ancient provenance in the public health field ([82](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B82 \"\")). Interventions prompted by those ideas, such as urban parks, have long remained in place, presumably because the public has enjoyed them and believed in their salutary value. The recent research tests such beliefs, and it encourages more nuanced theoretical and practical consideration of nature-health relations.\\n\\nIn this article, we review work done in recent decades to better characterize the health benefits of contact with nature. We do not cover this body of work comprehensively, but instead we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations. We touch on clinically oriented work on contact with nature in therapeutic contexts, but we do not discuss benefits of companion animals, which may be taken as representations of nature ([42](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42 \"\"); however, see [6](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B6 \"\")). Although the core ideas we discuss have a durable legacy in public health practice, the topic has not previously been the focus of an Annual Review of Public Health article (however, see [44](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B44 \"\"), [80](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B80 \"\")).\\n\\nBelow, we examine the concept of nature, consider reasons for the current expansion of research, and provide a “review of reviews.” We then review research on pathways involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research.\\n\\nDEFINING “NATURE”\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nIn an objective sense, “nature” as used here refers to physical features and processes of nonhuman origin that people ordinarily can perceive, including the “living nature” of flora and fauna, together with still and running water, qualities of air and weather, and the landscapes that comprise these and show the influence of geological processes. As such, “nature” overlaps substantially with “natural environment,” an environment with little or no apparent evidence of human presence or intervention, and the two terms have been used interchangeably.\\n\\nIn practice, however, much research does not accept exclusion of the artificial as a basis for defining nature or natural environment. The nature of interest is often situated in built environments, as with indoor plants and street trees. Similarly, allotment (or community) gardens and urban parks comprise natural features, appear natural, and provide opportunities to engage with and follow natural processes, but they are typically designed, constructed, regulated, and maintained. Research has also acknowledged that a person may experience nature as such when viewing natural elements or landscapes from a building or vehicle, in photographs and films, or in virtual reality setups.\\n\\nThe term “urban nature” is instructive. It admits the presence of nature even in those human environments that some consider the antithesis of the natural. Yet, just as it puts the urban and natural together, it also sets them apart. It exemplifies how contacts with nature in an urbanized society occur within a frame of reference shaped in an everyday life oriented in various ways to the society\\'s urban circumstances.\\n\\nThe term “nature experience” is used in some segments of this research to emphasize the subjective perception and evaluation of relevant environmental features ([67](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67 \"\")). It is, however, not a purely individual subjectivity, nor is it fixed. An individual\\'s experience of nature occurs within and carries further the long-running exchange between the society and its environment ([48](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B48 \"\")).\\n\\nIn sum, although nature has a wide variety of objective referents, it is also experienced subjectively and is effective as a social construction (for further discussion, see [106](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B106 \"\")). Accordingly, researchers represent nature with diverse physical and spatial variables, encountered in diverse activity contexts. Some also apply measurement, analysis, and design strategies to tap into the subjective experience of the environment. Because opportunities for contact with nature, ways of encountering nature, and experiences of nature vary across sociocultural contexts, researchers have examined variation in outcomes not only among individuals within given populations, but also across populations ([108](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108 \"\")).\\n\\nSOME REASONS FOR THE CURRENT RESEARCH EXPANSION\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nGrowth in this field of research is shown clearly by the increase in publications. For example, a search in the Web of Knowledge on just one term, “greenspace and health,” yielded 2 hits for 1990–1999, 34 for 2000–2009, and 45 from 2010 to June 2013.\\n\\nWhy is this expansion occurring? Motives for involvement in the field vary. Some work reflects concerns that urbanization, environmental degradation, and lifestyle changes are quantitatively and qualitatively diminishing possibilities for human contact with nature. For example, dense urban settings, if poorly designed (without accessible green space), may reduce opportunities for stress-reducing nature contact as well as increase exposure to environmental stressors ([53](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B53 \"\")). Other work considers nature as just one aspect of the physical environment that is potentially beneficial for health. For example, epidemic obesity in some countries has focused attention on sedentary lifestyles and environmental supports for physical activity, including but not limited to nearby parks ([24](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B24 \"\")). In general, the research aims to inform practical measures that directly or indirectly involve access to nature, including provisions for housing, transportation, and recreation.\\n\\nChange in thinking about health has also enabled expansion of the research field. With the epidemiologic transition to chronic, lifestyle-related diseases as the major causes of mortality, biopsychosocial explanation ([33](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B33 \"\")) came to compete with the biomedical model, and constructs such as “psychological stress” and “social support” came into widespread use. This development has suited a field populated mainly by people trained in disciplines (e.g., human geography, environmental psychology, social epidemiology) and professions (e.g., outdoor recreation management, landscape architecture, urban forestry) that take interest in how people perceive, interpret, evaluate, and act on the environment. The conception of health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity” ([138](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B138 \"\"), p. 100) has also been influential for its heuristic value and as a basis for action. By acknowledging the positive, multidimensional character and subjective aspects of health, this concept supports the involvement of a wide variety of actors in efforts to understand and support health, including but not limited to those trained to treat symptoms of ill-health ([132](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B132 \"\")). Research in the field accordingly represents health in many ways, not only with regard to forms of morbidity ([86](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86 \"\")), causes of mortality ([94](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94 \"\")), and longevity ([119](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B119 \"\")) but also with regard to self-reported health ([26](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26 \"\")) and diverse intermediate outcomes involving different pathways, such as beneficial change in emotional and physiological markers of stress measured during visits to natural areas ([3](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B3 \"\"), [49](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49 \"\")).\\n\\nMethodological and conceptual advances are also feeding the expansion of the field; old and new topics are being studied with a range of new tools. For example, beliefs about stress-reducing effects of park visits are widespread and long-standing ([101](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B101 \"\")), but experimental testing of such effects is a relatively recent activity ([52](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B52 \"\"), [125](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B125 \"\")). These small-scale experimental demonstrations of pathway plausibility informed the first large-scale epidemiologic studies to assess associations between contact with nature and health ([26](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26 \"\"), [87](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87 \"\"), [93](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B93 \"\")). Those studies used resources and techniques that only recently became available. For example, they used land-use data extracted from satellite images with digital technologies to describe the spatial extent of different kinds of nature accessible to the given individuals and groups in their residential contexts.\\n\\nHaving considered some of the developments in societies, sciences, and professions that have motivated and enabled the recent expansion of this field, we turn now to examine the research in more detail, starting with previous efforts to review the literature.\\n\\nREVIEW OF REVIEWS\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nMany review articles on nature and human health have been published in recent years. Assessing them is one means of summarizing the state of the field in terms of what is known and the quality of the research. In April 2013, we undertook a systematic search for reviews. We used Medline and all Web of Knowledge databases to identify peer-reviewed papers, sought nonindexed, non-peer-reviewed (gray) literature, and online reviews via Internet searches, and examined citation lists of already identified reviews. We included review articles or reports relevant to relationships between nature and human health and well-being. Inevitably, because the topic boundaries of nature and health are fuzzy, relevance was sometimes difficult to establish. For example, reviews on environmental correlates of physical activity often include access to urban parks or trails among many other environmental characteristics, but they may not focus on natural environments. We identified 59 relevant reviews at the time of the search (see [Supplemental Material](http://www.annualreviews.org/doi/suppl/10.1146/annurev-publhealth-032013-182443)). Of the peer-reviewed articles, most appeared in journals concerned with public health or environmental planning.\\n\\nThe reviews varied considerably in methodology and guiding aims. We observed three broad search-and-synthesis approaches: (a) narrative reviews, not clearly based on a systematic literature search (n = 24); (b) narrative reviews based on a systematic literature search or comprehensive case identification (n = 13); and (c) full systematic reviews based on an exhaustive literature search (n = 22). The reviews tended to have one of four general aims. First, systematic reviews sought to collate and synthesize all evidence for the effects of specified contacts with nature on specified markers of health (e.g., [2](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2 \"\"), [123](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123 \"\")). Second, summary reviews often aimed to introduce the field, explain its concepts and the mechanisms by which natural environments might affect health, and then set out some evidence for effects (e.g., [54](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54 \"\"), [89](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B89 \"\")). Some were published as gray literature and had been commissioned by governmental or nongovernmental agencies. A third group included what might be labeled “flag-waving” reviews (e.g., [42](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42 \"\"), [95](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B95 \"\")). These were aimed at introducing the topic to a new audience and were often relatively brief. Fourth, and fewer in number, were conceptual reviews, methodological reviews, or those proposing new theoretical perspectives (e.g., [8](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B8 \"\"), [79](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B79 \"\")).\\n\\nReviews also varied by the environments and/or pathways to health discussed. Physical activity had the most dedicated coverage as the focus of 18 reviews (e.g., [65](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B65 \"\"), [90](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90 \"\")). Mitigation of poor air quality/urban heat problems and physiologically/psychologically restorative effects also had dedicated reviews (e.g., [12](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B12 \"\"), [15](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B15 \"\"), [19](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19 \"\")). Twenty-six of the reviews addressed multiple mechanisms. The reviews covered a wide range of natural features and environmental categories, including indoor plants ([16](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B16 \"\")), urban parks ([90](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90 \"\")), and forests ([22](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B22 \"\")), but coverage was uneven. Urban parks were the most commonly considered setting. Two categories of environments were conspicuously underrepresented or absent; rural areas had just one review ([41](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B41 \"\")), and there were no review articles about gardens or allotments or community gardens other than those used for therapeutic purposes. Also, very few reviews focused on population subgroups. Children were the most commonly considered subgroup (e.g., [91](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B91 \"\"), [96](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B96 \"\")). We found no reviews dedicated to differences in relationships between nature and health by gender, ethnicity, or socioeconomic position.\\n\\nGiven this variety in method, aims, and focus, we find it interesting that there was strong agreement about the methodological state of the art. Reviews commonly concluded that the field remains dominated by observational study designs. Reviews agreed that too few primary studies have been carried out in a consistent and rigorous way to establish the causality of relationships between contact with nature and health. They agreed, too, that few primary studies have explored how effects may vary by population subgroup, by type of natural environment, or by type of contact with nature. Many reviews commented that consistent and objective measurement of both exposure to nature and health-related outcomes remains elusive.\\n\\nWe identified three weaknesses in the reviews with specific relevance to this field. First, search strategies did not always address the variety of environments or settings that count as “natural.” It is necessary to enter multiple terms into the literature search to avoid missing important work. For example, urban parks may be described by one or more of park, green space, greenspace, green areas, open space, recreational space, natural space, natural environment, etc. Building a review of relevant literature on a search for “green space” or “park” alone, for example, is inadequate.\\n\\nSecond, reviews from individual-based disciplines such as psychology tended to ignore evidence from population-based disciplines such as epidemiology, and vice versa. A great strength of this field is that evidence exists to describe benefits of contact with nature at multiple levels, from laboratory experiments tracking individuals\\' physiological reactions to viewing natural scenes through to studies of differences in population mortality rates between more and less green cities. Each level and scale of study provides important components in understanding what contact with nature can and cannot do for human health.\\n\\nThird, the variety of health outcomes used in primary studies was not well addressed. When reviews try to synthesize results from outcome measures that are sensitive to contact with nature in different ways, and for different durations, messages become clouded. The pooling of results from heterogeneous outcome measures may be motivated by a lack of multiple studies using consistent measures and study designs. However, failure to appreciate differences among outcome measures leads to mischaracterization of the evidence base. Heterogeneity in outcome measures used in primary studies perhaps explains the relatively small number of reviews that attempted a pooled analysis. The body of reviews consequently tells us little about effect size.\\n\\nOverall, the reviews generally agreed that beneficial effects from contact with nature do occur and that these effects are plausibly connected to the mechanisms proposed in guiding theory. However, most of the evidence covered by the reviews related to intermediate health-related outcomes such as amount of physical activity, amount of social contacts, changes in physiological activity (e.g., cardiovascular, neuroendocrine, and musculoskeletal changes characteristic of stress reduction), changes in emotional states (e.g., increased happiness, decreased anger), and changes in cognitive capability (e.g., performance on standardized tests of executive attention) rather than to disease states or measures of mortality. The reviews found less evidence that traced full pathways from contact with nature, to measures reflecting the operation of the given mechanism(s), and on to longer-term outcomes. Thus, it is unsurprising that the reviews generally suggest that the evidence is not yet good enough to say when, where, and for whom given effects will occur or how large or long-lasting they will be.\\n\\nPATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nContact with nature may affect health via multiple pathways. Pathways that have received relatively large amounts of research attention involve air quality, physical activity, social cohesion, and stress reduction. We describe each of these pathways and indicate some of the complexities involved in drawing conclusions about its role, including variation in association across people, activities, and characteristics of the nature under study. The pathways emphasize different aspects of nature, as physical environment, as setting for (individual and social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously and affect one another, a point to which we return at the end of this section. The different pathways and possibilities for effect modification by individual or contextual variables are illustrated in [Figure 1](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1 \"\").\\n\\nFigure 1Some pathways through which the natural environment can affect the health of broad segments of populations. Four of the pathways go through contact with nature, whereas two others go directly from the natural environment to air quality and stress, respectively, implying that the natural environment may affect health without an individual or group consciously engaging with nature as such. Associations between variables at the different steps in a given pathway are subject to modification by characteristics of the people or the context. The two-headed arrow between the natural environment and contact with nature acknowledges that these are joined in a reciprocal relationship. The two-headed arrows between the variables designating pathways (air quality, physical activity, social contacts, and stress) also speak to their reciprocal relatedness; however, each may be related with all the others and not only with the one adjacent. Abbreviations: CHD, coronary heart disease; CVD, cardiovascular disease.\\n\\n[![                   Figure 1\\u2002                ](https://www.annualreviews.org/docserver/ahah/fulltext/publhealth/35/1/pu350207.f1_thmb.gif)\\\\\\\\\\n\\\\\\\\\\nFigure 1\\u2002\\\\\\\\\\n\\\\\\\\\\n\\\\\\\\\\nClick to view](https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.gif) [Download as PowerPoint](https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.ppt?mimeType=application/vnd.ms-powerpoint)\\n\\nAir Quality\\n\\nTrees, shrubs, and other vegetation may affect ambient air quality and, through it, human health and well-being. There are both positive and negative impacts. Trees and other vegetation may reduce levels of some pollutants, including gases and particulate matter (PM), but they may also contribute to air pollution by releasing hydrocarbons. Some trees and plants release pollen, aggravating allergies. Finally, trees improve air quality indirectly when they cool urban environments and reduce building energy demand.\\n\\nTrees and other vegetation can reduce levels of gaseous air pollutants \\\\[e.g., ozone, oxides of nitrogen (NOx), oxides of sulfur\\\\] and PM ([37](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B37 \"\")). For gases, the primary mechanisms of action are uptake by leaf stomata, absorption, and adsorption to plant surfaces. PM removal occurs through deposition on leaves and other plant surfaces ([7](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B7 \"\")). However, most PM is resuspended to the atmosphere, washed off by rain, or dropped to the ground ([100](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100 \"\")). Empirical studies (e.g., [34](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B34 \"\"), [113](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B113 \"\")) and modeling studies (e.g., [103](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B103 \"\"), [120](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B120 \"\")) suggest that urban tree canopy generally reduces air pollution levels by no more than a few percentage points, and often far less, although some results suggest more efficient removal of PM ([59](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B59 \"\"), [63](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B63 \"\")) and certain volatile organic compounds (VOCs) ([70](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B70 \"\")). Because trees may reduce air movement, especially in restricted spaces such as urban “canyons,” they may impede the localized dispersion of pollutants. Local factors such as the density, species composition, and age of the tree canopy, the concentration of air pollutants, and the length of the in-leaf season influence the extent of pollutant removal.\\n\\nPlants may also affect indoor air quality—an important observation because people in developed nations may spend as much as 90% of their time indoors. VOCs such as benzene and formaldehyde may derive from furniture, carpets, cleaning agents, paint, and other sources. Indoor plants, especially such species as English ivy and spider plant, have been shown to reduce levels of many VOCs ([81](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B81 \"\"), [140](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B140 \"\")). Bacteria in the soil may account for some VOC scavenging attributed to the plants ([102](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B102 \"\")).\\n\\nIn contrast to pollutant removal, trees can also be a source of hydrocarbons, including isoprene and terpenes, with considerable variation by species ([9](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B9 \"\")). These biogenic hydrocarbons may function as precursors of ozone and secondary organic aerosols ([20](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B20 \"\"), [74](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B74 \"\")). Modeling studies have assessed the relative contribution of biogenic emissions to pollution levels (e.g., [112](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B112 \"\")). Results vary depending on the species of trees in a canopy, local atmospheric chemistry (especially levels of other precursors, such as NOx), local weather, and other factors.\\n\\nTrees, grasses, and other plants release pollens, which can aggravate allergies and asthma in susceptible people ([18](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B18 \"\"), [27](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B27 \"\")). The culprits vary with geography but include ragweed, grasses (e.g., Timothy, Bermuda, bluegrass), and trees such as catalpa and walnut. In cities that have favored trees that are heavy pollen producers, the health impact may be especially significant ([19](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19 \"\")). A study of African American and Dominican children in New York City found a small but significant association between tree canopy extent and asthma and allergic sensitization ([83](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B83 \"\")). Hence, in some circumstances, the allergenic role of trees may eclipse their ability to improve health by reducing air contaminants.\\n\\nVegetation, especially trees, may also indirectly benefit air quality. During warm weather, trees reduce summer air conditioning demand by shading and hence cooling buildings and through the cooling effects of evapotranspiration. This effect, in turn, reduces energy demand, which, in areas served by coal-fired power plants, reduces air pollution derived from coal combustion, though not necessarily at the same location ([1](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B1 \"\")). During cold weather, the reverse can happen. In a simulation study in Sacramento, trees reduced the need for cooling energy in summer about three times more than they increased the need for warming energy in winter ([114](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B114 \"\")). The monetary benefits of energy savings related to trees may exceed those of the pollutant removal ([13](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B13 \"\")).\\n\\nThe overall impact of vegetation on air quality is therefore a function of several processes, operating in opposing directions: hydrocarbon emissions, pollen production, pollutant uptake, and effects on energy demand. Careful selection of species, design of planting configurations with regard to wind, shade, and other impacts, and maintenance of urban vegetation can optimize the beneficial effects on air quality ([30](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B30 \"\"), [100](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100 \"\")).\\n\\nPhysical Activity\\n\\nPhysical activity promotes physical and mental health across the life span ([10](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B10 \"\"), [61](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B61 \"\")). Recent evidence suggests that the health benefits of increased physical activity are largest among those who were initially doing the least ([104](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B104 \"\")). The outdoor environment may influence how physically active an individual is by offering suitable spaces for certain types of activities. It may also attract people outdoors because of the experiences it offers. Such outings ordinarily entail some form of physical activity, usually walking.\\n\\nAn important precondition for the use of natural environments for physical activity is individuals\\' (perceived) safety ([62](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B62 \"\")). Although there are possible negative effects associated with physical activity (e.g., sports injuries) as well as with being in a natural environment (e.g., Lyme disease from tick bites), most of these effects are not specific to physical activity in a natural environment.\\n\\nGreen space is only one part or aspect of the physical environment relevant for physical activity. Which environmental characteristics promote or hamper physical activity may depend strongly on the type of activity at hand ([5](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B5 \"\")). Three broad activity domains may be identified: work (including study), active transport (walking, cycling), and leisure (recreation, sport). Within the work domain, the greenness of the setting is thought to be of little importance for the amount of physical activity. The same is not true for active transport. Natural features may lead people to favor walking or cycling over other transport modes by making routes to destinations more attractive; however, distance to destination, availability of suitable infrastructure (e.g., sidewalks, bicycle paths), and safety are more important factors ([55](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55 \"\")). The evidence for association between green space and active transport (walking and/or cycling) is mixed, and this heterogeneity has been well summarized by recent systematic reviews ([40](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B40 \"\"), [78](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B78 \"\")). Reasons for (noncausal) negative associations may be that large amounts of green space tend to go together with (a) greater distances to destinations, (b) higher levels of car ownership, and (c) better availability and lower cost of car parking spaces near one\\'s home ([28](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B28 \"\"), [55](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55 \"\")).\\n\\nThe importance of natural environments for fostering physical activity may vary by population subgroup. Children are perhaps the most commonly studied subgroup in this context, but again results are mixed. In one review ([29](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B29 \"\")), ∼40% of the studies in which environmental characteristics were objectively measured showed park access or vegetation to be positively associated with children\\'s physical activity levels; in the other 60% of the studies, no association was observed. A further systematic review ([35](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B35 \"\")) concluded that for (young) children the safety of the environment as perceived by their parents was an important moderating factor. Results from studies of older people are also mixed; two recent systematic reviews arrived at different conclusions. One ([128](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B128 \"\")) reviewed studies on the physical environment in general and concluded that there was no clear relationship between green space (and most other physical environmental characteristics) and physical activity of older people. The other specifically focused on green space, however, and it observed that seven out of eight studies showed a positive relationship between the greenness of the living environment and physical activity levels of older people ([17](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B17 \"\")). It also concluded that the perception of safety is an important moderating factor.\\n\\nRelatively little attention has been paid to the relevance of specific environmental characteristics, such as the type of greenery or the quality of the open space. Results are again mixed. One study ([46](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B46 \"\")) concluded that very good access to large, very attractive public open space was associated with higher levels of walking. Another ([56](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B56 \"\")) by contrast observed no relationship between access to large, high-quality urban green spaces and recreational physical activity. A third study ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\")) observed a relationship of quality (but not quantity) of streetscape greenery with “green” activity, though not with total physical activity. Finally, recent results suggest that community gardening is associated with a lower body mass index ([141](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B141 \"\")).\\n\\nGiven that physical activity is assumed to be an important pathway joining nature with health, we find it surprising that few studies have formally investigated the extent to which any association between nature and health might be mediated by physical activity levels. Of four studies done ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\"), [88](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B88 \"\"), [109](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B109 \"\"), [118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")), only one ([118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")) concluded that physical activity (more specifically recreational walking) was indeed an important mediator.\\n\\nFinally, we note that most of the studies referred to in this overview have been cross-sectional in nature. Hence, the direction of observed relationships remains open to alternative explanations. For example, some people may choose a highly car-dependent (and presumably more green) living environment because they are not inclined to be physically active anyway ([32](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B32 \"\")).\\n\\nSocial Cohesion\\n\\nMuch as for physical activity, abundant research has documented positive associations between social relationships and health and well-being ([57](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B57 \"\"), [97](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B97 \"\")). Such salutary associations have also been observed for positive relationships specifically within the neighborhood ([110](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110 \"\")). A variety of terms have been introduced to reflect the potential value of social relationships in this context, including social capital, social support, social cohesion, and sense of community. Although these terms are often used interchangeably ([4](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4 \"\"), [110](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110 \"\")), we draw a distinction here between social capital and social cohesion. Social capital comprises primarily those resources available to an individual through his or her social connections, which may be activated in times of need. In contrast, social cohesion refers to shared norms and values, the existence of positive and friendly relationships, and feelings of being accepted and belonging (cf. 36). We prefer to use the term social cohesion here because it is more a characteristic of neighborhoods than of individuals ([4](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4 \"\")) and so more likely to be influenced by physical characteristics of the neighborhood, such as the availability and quality of green space and natural elements.\\n\\nUnlike physical activity, the environmental correlates of social cohesion have received little research attention thus far. Generally, the few studies available suggest a positive relationship between social cohesion and natural environments ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\"), [38](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B38 \"\"), [85](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85 \"\"), [118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")). Sugiyama et al. ([118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")), for example, found perceived social coherence and local social interaction to be associated with the perceived greenness of the neighborhood. De Vries et al. ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\")) found an association between streetscape greenery and perceived social cohesion at the neighborhood scale, both for the quantity and, even more strongly, for the quality of greenery.\\n\\nSocial cohesion within a neighborhood does not lend itself to experimental research, which makes it difficult to determine whether relations with environmental features are causal. A few studies have, however, taken advantage of circumstances that likened a natural experiment. Researchers in Chicago ([77](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77 \"\")) took advantage of quasi-random assignment of public housing residents to dwelling units in architecturally similar high-rise buildings with varying amounts of vegetation outside. They found a positive association between the presence of trees and grass on the use of common spaces and informal social contact with neighbors. Moreover, the relationship between greenery and social contacts appeared to be mediated by the use of the common spaces.\\n\\nThe research in Chicago ([77](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77 \"\")) also showed that social contact was positively related to one\\'s sense of safety. Subsequent studies showed that residents with more trees and grass around their buildings displayed less aggressive behavior, and their buildings were associated with fewer crimes ([75](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75 \"\"), [76](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76 \"\")). More recent research suggests similar positive effects of greening vacant lots, especially a reduction in gun assaults and disorderly conduct ([14](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14 \"\")).\\n\\nOther attributes of the environment may moderate any association between natural features and social cohesion. Arguably, local parks must be well maintained and provide attractive recreational facilities to realize their full potential in developing social ties ([71](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B71 \"\")). Although green space generally is positively associated with feelings of safety, in dense urban areas enclosed green spaces may reduce such feelings ([84](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B84 \"\")). Similarly, trees in the public realm have been associated with reduced crime rates, but small trees on private lots have been associated with increased crime rates, presumably because these trees make it more difficult to observe criminal activity ([31](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B31 \"\")). Some natural settings, such as community gardens, incorporate social ties almost by definition. In one study, older allotment gardeners reported having more contacts with friends and felt less lonely than did nongardening neighbors in the same age category ([131](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B131 \"\")).\\n\\nThe question remains whether social cohesion, sense of safety, aggressive behavior, and crime rates mediate an eventual relationship between contact with nature and health. Results from a few cross-sectional studies bear on this point. One found that social cohesion partially mediated the relationship between perceived neighborhood greenness and mental health ([118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")). Another concluded that feelings of loneliness and perceived shortage of social support partially mediated the relationship between the amount of green space within one kilometer and overall health ([85](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85 \"\")). A third found that social cohesion mediated relationships between quantity and quality of streetscape greenery and both overall health and mental health ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\")). In contrast, Francis et al. ([39](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B39 \"\")) found neither sense of community nor social support to be an important mediator of the relationship between the quality of public open space and mental health. No studies were identified on mediation by aggressive behavior, fear of crime, and/or crime rates.\\n\\nStress Reduction\\n\\nBy helping people maintain adaptive resources needed to meet the demands of life, nature can reduce risk of illnesses involving chronic stress, as well as promote a range of intermediate outcomes such as increased subjective well-being. It can do so in two general ways. First, natural areas and features can reduce exposure to challenging environmental conditions by increasing distance to stressors and/or decreasing their perceptual salience. For example, green spaces between residences and heavily trafficked roads can reduce occupant noise annoyance ([99](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B99 \"\")), vegetation can conceal displeasing structures ([115](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B115 \"\")), and landscaping around housing can help residents maintain privacy and avoid feelings of crowding ([23](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B23 \"\")).\\n\\nSecond, nature can help people restore their adaptive resources. Escape from physical and social stressors has long been described as an important motive for recreation in natural areas ([58](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B58 \"\"), [72](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72 \"\")). Nature\\'s restorative quality does not, however, depend only on an absence of stressors; its restorative quality is also defined in positive terms. Another persistent motive for outdoor recreation has been appreciation of nature—for beautiful scenery, symbolic qualities, and other valued attributes ([72](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72 \"\")). Push and pull motives also work in tandem in contexts other than outdoor recreation, notably the residential context. For example, residential location decisions commonly reflect efforts to both minimize stressful exposures and enhance access to restorative amenities, including green (or blue, i.e., water) areas ([51](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B51 \"\")).\\n\\nThis motive combination appears in two theories about how nature can promote more rapid and complete restoration than other environments can. They offer contrasting views on how restoration can proceed once a person has gained psychological distance from threats and other demands. Psychoevolutionary theory holds that, for a person experiencing acute stress, nature contact can very rapidly evoke positive affect, which in turn blocks negative thoughts and feelings and fosters reduction of physiological activation ([126](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B126 \"\"), [127](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B127 \"\")). Evolution purportedly conserved this functional aesthetic response because more rapid recovery from acute stress would have helped proto-humans better prepare for the next survival task. In contrast, attention restoration theory holds that effortless attention engaged by intrinsically interesting aspects of nature enables rest for a fatigued neurocognitive inhibitory mechanism engaged when willfully directing attention ([67](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67 \"\"), [68](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68 \"\")). People must inhibit task-irrelevant stimuli as they direct their attention at work and in many other circumstances. Fatigue of this directed attention capability occurs commonly, undermines effective action, and can increase susceptibility to stress ([68](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68 \"\")).\\n\\nInformed by one or both of these theories, true and quasi-experiments done in laboratory and field settings have assessed diverse affective, cognitive, and physiological effects of more and less natural comparison conditions, realized over varying but generally brief time spans after a naturalistic or experimental induction of a need for restoration. Published studies generally report some restorative advantage of nature, and by 2004, reviewers had judged the evidence for restorative effects of nature to be strong ([54](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54 \"\")). More recently, methodological heterogeneity led other reviewers ([11](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B11 \"\")) to include only 3–6 studies in quantitative syntheses for each of several outcomes. They concluded, nonetheless, that the available studies provided reliable evidence of reductions in self-reported anger, fatigue, anxiety, and sadness and an increase in feelings of energy. They also found tentative evidence of enhanced attention. Conclusions regarding physiological effects were limited by a lack of studies that had the desired design features. Studies done since that 2010 review have further expanded the body of experimental evidence in several directions: additional comparison conditions \\\\[e.g., more or less open vegetation ([45](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B45 \"\")); encountered in different ways, e.g., work site desktop relaxation packages ([60](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B60 \"\"))\\\\], alone or in company ([64](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B64 \"\")), and in additional subpopulations \\\\[e.g., children with attention deficit disorder (ADD) ([121](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121 \"\")), with effects registered using additional measurement techniques (e.g., cortisol; [129](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B129 \"\"))\\\\].\\n\\nOther research assumes cumulative health effects of more effective restoration on many occasions over time. That work is bolstered by studies that situate repeated contact with nature into an ongoing process of self-regulation. Such studies recognize that some people learn that natural settings are more likely than other settings to be restorative. Over time, they apply this knowledge to better manage adaptive resources such as attentional capacity ([69](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B69 \"\"), [73](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B73 \"\"), [116](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B116 \"\")). When and how that learning begins remain understudied, but childhood experience appears influential for environmental attitudes measured in later life ([133](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B133 \"\"), [136](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B136 \"\")). Some research does suggest that restorative childhood contact with nature can cumulatively provide benefits with far-reaching developmental significance. Contact with nature may for example improve attentional function in children with ADD ([121](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121 \"\")) and enhance self-discipline in children without a diagnosis ([122](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B122 \"\")).\\n\\nObservational studies commonly cite nature\\'s cumulative stress-reducing or restorative effects as one plausible pathway by which residential green space might affect perceived health ([26](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26 \"\"), [87](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87 \"\")), diverse forms of morbidity ([86](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86 \"\")), and death from circulatory disease and other causes ([94](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94 \"\")). To date, however, most studies with individual data have not directly addressed a stress-reduction pathway owing to a lack of measures suitable for assessing mediation. One early quasi-experiment did however assess mediation with reference to attention restoration ([76](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76 \"\")), and some recent surveys have begun to address this issue with self-report measures ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\"), [117](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B117 \"\")). Another study has considered variation in the level of cortisol as a biomarker of chronic stress in members of a community sample living in more or less green circumstances ([134](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B134 \"\")); such a measure could serve tests of mediation of the effect of nature on stress-related illnesses.\\n\\nSome studies have framed nature as a stress buffer, which has entailed estimating the interactive effect of stressful demands and access to nature on some health outcome. Several studies focused on nature in the residential context are illustrative. In a study done in rural New York state, conflicts at school experienced during the preceding three months were less strongly associated with psychological distress in children who had more nature in and around the home ([135](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B135 \"\")). In a Dutch study, the relationships between stressful life events in the previous three months and both health complaints and perceived general health were weaker among those with more green space within 3 km of the home ([130](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B130 \"\")). In an ecological study covering the population of England, high income deprivation had a weaker association with all-cause and circulatory disease mortality among people living in areas with relatively large amounts of green space ([94](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94 \"\")).\\n\\nIn sum, substantial evidence speaks to the potential benefits of contact with nature for avoiding health problems traceable to chronic stress and attentional fatigue; however, the greater part of this evidence concerns the short-term restorative benefits of single encounters with or experiences in nature.\\n\\nThe Pathways Intertwine\\n\\nDiscussions of air quality, physical activity, social cohesion, and stress-reduction pathways emphasize different aspects of nature: as physical environment, as setting for (individual or social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously, as illustrated in [Figure 1](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1 \"\").\\n\\nMost individual studies have focused on one particular pathway from nature to health, but some research has addressed combinations involving two or more of them. Much of this work has recognized links between physical activity and stress reduction. People commonly engage in physical activity not only or even primarily because it will serve their health in the long run, but also because it helps them to feel good in the short run, sometimes by reducing tension and stress. Conversely, people who want to enter a natural environment for restoration ordinarily must engage in some form of physical activity to do so. Accordingly, experiments have found “green exercise” more psychologically beneficial than the same exercise in settings with relatively little nature ([92](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B92 \"\"), [105](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B105 \"\")). Thus, being active in natural settings may yield health benefits over and above the benefits of physical activity in other environments (for a meta-analysis, see [123](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123 \"\")). Conversely, a person walking or running along city streets may have to endure aversive conditions that reduce the benefits of the activity itself ([49](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49 \"\")).\\n\\nMultiple pathways may be purposefully combined in cultural practices that regularly bring people in contact with nature. For example, community gardening may promote social contacts during moderate physical activity that also supports restoration from stress associated with work or other demands. The Japanese practice of Shinrin-yoku, or forest-bathing, involves beliefs about the salutary values of certain substances in the air, and it entails behaviors that ordinarily promote stress reduction (e.g., distancing oneself from everyday demands, adopting a meditative stance) ([124](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B124 \"\")).\\n\\nSome cultural practices that engage multiple pathways may however not be salutary for all population subgroups. For example, in some countries, many households maintain a simple, inexpensive leisure home in the countryside, to which family members ordinarily travel together during vacation periods; however, as a domestic setting, the leisure home may also impose unwanted demands and on some household members more than others. Swedish research found that, after several years of follow-up, employed men who owned a leisure home had lower odds of retiring early for health reasons ([50](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B50 \"\")); however, this prospective association did not hold for women. Indeed, among highly educated and highly paid women, the likelihood of early retirement for health reasons was greater if they also owned a leisure home. Other studies have also indicated a potential gender difference in the nature-health relationship (e.g., [107](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B107 \"\")).\\n\\nMETHODOLOGICAL CHALLENGES\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nIn addition to the usual methodological concerns in experimental and epidemiologic research, we must tackle a litany of specific methodological challenges if we are to develop our understanding of the degree to which, how, and under which circumstances contact with nature affects human health and well-being.\\n\\nMeasuring Exposure to Nature\\n\\nContact with nature challenges definition and control in field and laboratory experiments, and it is even more difficult to assess in free-living populations. Studies at population level typically assess exposure in one of three ways: assessments of exposure by how much nature there is in, or close to, the participants\\' area of residence; survey questions about how much time, and/or how often, people visit natural environments; and objective measures of contact via GPS (global positioning systems) technology. Each method has problems; that people live near natural spaces, report visiting them, or position themselves spatially within them does not mean that individuals actually have had contact with nature in a way that affects their health. None of these measures includes visual contact with nature from, for example, windows at home or in the workplace, which may also have beneficial effects ([66](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B66 \"\")). Furthermore, these measures typically miss fine details of exposure that may be important, such as the timing of exposure (e.g., for many environmental exposures, specific windows of vulnerability exist across the life span), the seasonality of exposure (e.g., the role of deciduous trees being in leaf), the quality of the nature (e.g., area in mature trees versus immature trees versus shrubs versus lawn), and the duration of exposure.\\n\\nMeasuring Outcomes\\n\\nThe other end of the equation between natural environment and health is the assessment of health itself. Plausible health impacts are varied and multiple, positive and negative, psychological and physiological, short term and/or long term. This plurality means many different health measures can be used, which, in turn, makes it difficult to achieve a coherent body of research. There is a particular challenge in bridging what we know about effects of contact with nature from small-scale, shorter-term experimental studies and what we might expect to observe as effects in the real world at the population level. For example, it is difficult to determine what the fall in blood pressure on viewing nature, established in experimental studies, might mean for rates of heart disease among regular visitors to national parks. There is no simple solution to this challenge and no one clearly superior set of instruments or measurements that are suited to use in all settings and studies.\\n\\nUnderstanding Mechanisms\\n\\nUnderstanding how any relationship between nature and health happens can aid interventions that promote possible benefits. It is also vital for specifying who might benefit most and least from the relationship. The challenge is that, as we have noted, the mechanisms by which nature might affect health are multiple and synergistic. They likely vary in significance within a single contact with nature, between contacts, across the life course, between population subgroups, between environment types and across cultures. Understandings of mechanisms being developed in the relatively controlled conditions of experiments should eventually help epidemiologists to form better hypotheses about the variation in associations they could expect at a population level.\\n\\nDemonstrating Causality at a Population Level\\n\\nPositive, short-term effects of contact with nature on affect, cognition, and physiology have been reasonably well established in laboratory and field experiments. However, cross-sectional designs still dominate studies of long-term health outcomes measured in populations. The vulnerability of these designs to confounding and reverse causality is a particular problem. The likelihood of contact with nature is strongly patterned by socioeconomic, ethnic, age, and cultural characteristics, which are, themselves, linked to health. Richardson et al. ([108](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108 \"\")) provide a fine example of the potential for confounding factors to obscure relationships between green space and health at a population level.\\n\\nBoth experimental and longitudinal observational designs are potential routes to better evidence for a causal relationship among free-living populations. For studies of nature and health, however, both types of study impose specific challenges. Experimental studies at a population level are hard to perform. Manipulating environments or people is difficult and expensive. Scientists often must rely on public agencies or authorities to fund and deliver environmental changes, such as the creation of a new park or trail. It can also be difficult to establish and maintain control sites or populations, and opportunities to randomize the receipt of environmental interventions to different communities are rare. Useful results have emerged from quasi-experimental and before-after studies that capture some of the attributes of true experiments ([14](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14 \"\"), [75](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75 \"\")). The timescale for effects is also often a constraint. Funding to follow-up intervention studies is rarely longer than 3–5 years, but effects at a population level (perhaps even intergenerational effects) may take longer to establish.\\n\\nResearch on nature and health has been undertaken within different scientific paradigms. Attitudes toward the level of proof for an association, indeed attitudes toward the very idea of “proof,” vary between paradigms and are contested within them. Biomedical research, for example, often places great emphasis on low p-value thresholds for acceptance of an association. Frumkin ([43](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B43 \"\")) recently suggested, however, that the application of stringent p-value thresholds needs careful and explicit reconsideration in studies of nature and health. Moving from partial evidence to evidence-based recommendations regarding nature contact is a thorny problem.\\n\\nFor their part, existing panel or cohort studies that have good measures of health and well-being rarely also carry detailed information on contact with natural environments because this topic is relatively new to public health and epidemiology. Moreover, data sets that can also capture the change in or development of natural environments over time are rare.\\n\\nEffect Size\\n\\nEvidence suggests that contact with nature has a small effect on health and well-being in comparison to structural characteristics such as income, employment, or education, and behavioral characteristics such as smoking. The signal-to-noise ratio in population-level studies is often small, and these studies need to be well designed and of sufficient power to identify any benefits. This does not mean that such studies are not worth doing, however; a small beneficial effect on a large number of people is a large contribution to population health ([111](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B111 \"\")).\\n\\nPRIORITIES FOR FURTHER RESEARCH\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nThroughout this review we have identified issues that warrant further research, and in the previous section we have identified methodological challenges that must be met. Here, we try to highlight some specific priorities for the field.\\n\\nFirst, we see a need to seek, create, and take opportunities for population-level experimental studies when they arise, within an understanding of their limits. Doing so will assist in demonstrating the degree to which nature-health relations have meaning for population health. We should also work to incorporate questions about contact with nature in ongoing longitudinal studies and ensure that high-quality data on change in type, quality, and availability of nature are maintained into the future and created retrospectively for the past. These additions would permit studies consistent with both cohort and life-course perspectives on relationships between nature and health.\\n\\nSecond, research on which types of nature are relatively effective for particular outcomes, and which qualities of those types are highly relevant, may be more fruitful when guided by theoretical ideas about why a particular type or quality of that type is likely to contribute to a particular pathway to health. Natural elements that are effective in improving air quality are not necessarily the same as those best suited to improving social cohesion in a neighborhood or to promoting psychological restoration.\\n\\nThird, with specific regard to the stress pathway, much work remains to be done to rigorously assess theoretical claims regarding the components of experience that sustain attention restoration and stress recovery. To what extent, for example, are beneficial effects dependent on gaining psychological distance from stressful demands versus engaging with positive aspects of the nature encountered? This work will be aided by, among other things, further development of measures of perceived restorative quality in environments, and experimentation that more directly addresses the interplay of stress recovery, attention restoration, and other possible processes through which adaptive resources become renewed (cf. [49](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49 \"\")).\\n\\nFourth, if we acknowledge the competing priorities for funding and investment in health and health care, some research on nature and health might gain from a health economics perspective. If contact with nature is cost-effective as a means to protect and improve population health, it should be resourced and prioritized in preference to other approaches. Arguably, doing so requires knowledge not only about the economic significance of the health benefits generated, but also about the “doses” of nature needed to generate those benefits at the lowest possible cost. Discussions of dose, however, can entail a variety of problems, such as trivialization of contact with nature through neglect of long-term consequences of particularly powerful forms of contact (e.g., life-changing wilderness experiences). The dose metaphor therefore must be handled with care ([137](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B137 \"\")). As with other health-related issues, economic analyses must extend beyond health impacts to account for other benefits. For instance, an urban park may offer not only health benefits, but also benefits such as stormwater management and enhanced property values.\\n\\nFinally, variety between population subgroups in access to, use of, and responses to nature remains persistently underexplored. Spatial, social, economic, racial, cultural, and demographic differences in relationships between nature and health seem highly probable. It may be that relationships between nature and health are implicated in exacerbating or mitigating health inequalities between subgroups, for example. This potential should be thoroughly explored.\\n\\nCONCLUDING COMMENTS\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nWe have provided for a general public health audience an overview of research on how contact with nature relates to health in urbanized societies. We have not covered this body of work comprehensively, but instead have focused on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations, such as the availability of urban parks, the amount of green space in and near residential areas, and the preservation of peri-urban natural areas. Given our public health orientation, we have focused on the conditions of everyday life for the greatest part of the populations of interest. We consequently have hardly touched on the extensive literatures on wilderness experience (for reviews, see 72, [139](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B139 \"\")) and contact with nature in the treatment and management of disability and illnesses such as depression ([47](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B47 \"\")) and breast cancer ([21](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B21 \"\"); see [2](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2 \"\") for a review).\\n\\nDespite such significant omissions, we trust readers will take away an appreciation not only of the diversity and complexity in forms of nature contact and potential benefits thereof, but also of the many challenges faced in characterizing those contacts and benefits. Taken together, the research reviewed does indicate that contact with nature can promote health. The evidence for some benefits, such as short-term restorative effects, is already quite strong. That said, nature contact should not be assumed always and automatically to be good for health; we have more to learn about for whom, when, how, and in which contexts it offers benefits.\\n\\nMuch also remains to be done to help those responsible for environmental policy, design, and management to make realistic assessments of what nature can and cannot do in their domain of activity. Part of this task involves explaining how health benefits might coincide (versus conflict with) other benefits, such as better stormwater management, species preservation, and carbon sequestration. If a particular form of nature contact shows small health benefits, interventions to promote it may still justify public investment if the health benefits combine with other benefits.\\n\\nIn closing, we recognize that many people speak of human-nature relations in moral/ethical and spiritual/religious terms with a view toward preservation of the natural environment. We respect such views. Our observations here regarding human health values should not be understood as the only or even the main bases for arguments regarding protection of habitats, species, and ecosystem integrity.\\n\\ndisclosure statement\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nH. Frumkin is a board member of the US Green Building Council and of the Children and Nature Network. R. Mitchell supervises a doctoral student funded by the UK Forestry Commission and has received research funding from the Forestry Commission in the recent past. The other authors are not aware of any affiliations, memberships, funding, or financial holdings that might be perceived as affecting the objectivity of this review.\\n\\nACKNOWLEDGMENTS\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nacknowledgments\\n\\nR. Mitchell was funded under a European Research Council grant (ERC-2010-StG Grant 263501).\\n\\nliterature cited\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\n001. AkbariH, KurnDM, BretzSE, HanfordJW. 1.\\u20021997.  Peak power and cooling energy savings of shade trees. Energy Build.25:139–48[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&author=H+Akbari&author=DM+Kurn&author=SE+Bretz&author=JW+Hanford&journal=Energy+Build.&volume=25&pages=139-48&publication_year=1997&)\\n002. AnnerstedtM, WährborgP. 2.\\u20022011.  Nature-assisted therapy: systematic review of controlled and observational studies. Scand. J. Public Health39:371–88[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&author=M+Annerstedt&author=P+W%C3%A4hrborg&journal=Scand.+J.+Public+Health&volume=39&pages=371-88&publication_year=2011&)\\n003. BartonJ, PrettyJ. 3.\\u20022010.  What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. Environ. Sci. Technol.44:3947–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&author=J+Barton&author=J+Pretty&journal=Environ.+Sci.+Technol.&volume=44&pages=3947-55&publication_year=2010&)\\n004. BaumFE, ZierschAM, ZhangG, OsborneK. 4.\\u20022009.  Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. Health Place15:925–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&author=FE+Baum&author=AM+Ziersch&author=G+Zhang&author=K+Osborne&journal=Health+Place&volume=15&pages=925-34&publication_year=2009&)\\n005. BaumanAE, ReisRS, SallisJF, WellsJC, LoosRJ, MartinBW. 5.\\u20022012.  Correlates of physical activity: Why are some people physically active and others not?. Lancet380:258–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&author=AE+Bauman&author=RS+Reis&author=JF+Sallis&author=JC+Wells&author=RJ+Loos&author=BW+Martin&journal=Lancet&volume=380&pages=258-71&publication_year=2012&)\\n006. BeckAM, MeyersNM. 6.\\u20021996.  Health enhancement and companion animal ownership. Annu. Rev. Public Health17:247–57[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&author=AM+Beck&author=NM+Meyers&journal=Annu.+Rev.+Public+Health&volume=17&pages=247-57&publication_year=1996&)\\n007. BeckettKP, Freer-SmithPH, TaylorG. 7.\\u20022000.  The capture of particulate pollution by trees at five contrasting urban sites. Arboric. J.24:209–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&author=KP+Beckett&author=PH+Freer-Smith&author=G+Taylor&journal=Arboric.+J.&volume=24&pages=209-30&publication_year=2000&)\\n008. Bedimo-RungAL, MowenAJ, CohenDA. 8.\\u20022005.  The significance of parks to physical activity and public health: a conceptual model. Am. J. Prev. Med.28:159–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&author=AL+Bedimo-Rung&author=AJ+Mowen&author=DA+Cohen&journal=Am.+J.+Prev.+Med.&volume=28&pages=159-68&publication_year=2005&)\\n009. BenjaminMT, WinerAM. 9.\\u20021998.  Estimating the ozone-forming potential of urban trees and shrubs. Atmos. Environ.32:53–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&author=MT+Benjamin&author=AM+Winer&journal=Atmos.+Environ.&volume=32&pages=53-68&publication_year=1998&)\\n010. BizeR, JohnsonJA, PlotnikoffRC. 10.\\u20022007.  Physical activity level and health-related quality of life in the general adult population: a systematic review. Prev. Med.45:401–15[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&author=R+Bize&author=JA+Johnson&author=RC+Plotnikoff&journal=Prev.+Med.&volume=45&pages=401-15&publication_year=2007&)\\n011. BowlerDE, Buyung-AliLM, KnightTM, PullinAS. 11.\\u20022010.  A systematic review of evidence for the added benefits to health of exposure to natural environments. BMC Public Health10:456[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&author=DE+Bowler&author=LM+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=BMC+Public+Health&volume=10&pages=456&publication_year=2010&)\\n012. BowlerDE, Buyung-AliL, KnightTM, PullinAS. 12.\\u20022010.  Urban greening to cool towns and cities: a systematic review of the empirical evidence. Landsc. Urban Plann.97:147–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&author=DE+Bowler&author=L+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=Landsc.+Urban+Plann.&volume=97&pages=147-55&publication_year=2010&)\\n013. BrackCL. 13.\\u20022002.  Pollution mitigation and carbon sequestration by an urban forest. Environ. Pollut.116:S195–200[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&author=CL+Brack&journal=Environ.+Pollut.&volume=116&pages=S195-200&publication_year=2002&)\\n014. BranasCC, CheneyRA, MacDonaldJM, TamVW, JacksonTD, Ten HaveTR. 14.\\u20022011.  A difference-in-differences analysis of health, safety, and greening vacant urban space. Am. J. Epidemiol.174:1296–306[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&author=CC+Branas&author=RA+Cheney&author=JM+MacDonald&author=VW+Tam&author=TD+Jackson&author=TR+Ten+Have&journal=Am.+J.+Epidemiol.&volume=174&pages=1296-306&publication_year=2011&)\\n015. BratmanGN, HamiltonJP, DailyGC. 15.\\u20022012.  The impacts of nature experience on human cognitive function and mental health. Ann. N.Y. Acad. Sci.1249:118–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&author=GN+Bratman&author=JP+Hamilton&author=GC+Daily&journal=Ann.+N.Y.+Acad.+Sci.&volume=1249&pages=118-36&publication_year=2012&)\\n016. BringslimarkT, HartigT, PatilGG. 16.\\u20022009.  The psychological benefits of indoor plants: a critical review of the experimental literature. J. Environ. Psychol.29:422–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&author=T+Bringslimark&author=T+Hartig&author=GG+Patil&journal=J.+Environ.+Psychol.&volume=29&pages=422-33&publication_year=2009&)\\n017. BroekhuizenK, de VriesSI, PierikFH. 17.\\u20022013. Healthy Aging in a Green Living Environment: A Systematic Review of the Literature. TNO rep. R10154 Leiden: TNO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&author=K+Broekhuizen&author=SI+de+Vries&author=FH+Pierik&publication_year=2013&)\\n018. BrooksGD, BushRK. 18.\\u20022009.  Allergens and other factors important in atopic disease. Patterson\\'s Allergic Diseases LC Grammer, PA Greenberger 73–103 Philadelphia: Lippincott, Williams & Wilkins, 7th ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&author=GD+Brooks&author=RK+Bush&journal=Patterson%27s+Allergic+Diseases&pages=73-103&publication_year=2009&)\\n019. CariñanosP, Casares-PorcelM. 19.\\u20022011.  Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. Landsc. Urban Plann.101:205–14[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&author=P+Cari%C3%B1anos&author=M+Casares-Porcel&journal=Landsc.+Urban+Plann.&volume=101&pages=205-14&publication_year=2011&)\\n020. ChameidesWL, LindsayRW, RichardsonJ, KiangCS. 20.\\u20021989.  The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. Science241:1473–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&author=WL+Chameides&author=RW+Lindsay&author=J+Richardson&author=CS+Kiang&journal=Science&volume=241&pages=1473-75&publication_year=1989&)\\n021. CimprichB. 21.\\u20021993.  Development of an intervention to restore attention in cancer patients. Cancer Nurs.16:83–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&author=B+Cimprich&journal=Cancer+Nurs.&volume=16&pages=83-92&publication_year=1993&)\\n022. ColferCJP, SheilD, KishiM. 22.\\u20022006. Forests and Human Health: Assessing the Evidence Bogor, Indones.: Cent. Int. For. Res [http://www.cifor.org/publications/pdf\\\\_files/OccPapers/OP-45.pdf](http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&author=CJP+Colfer&author=D+Sheil&author=M+Kishi&publication_year=2006&)\\n023. DayLL. 23.\\u20022000.  Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. J. Plan Educ. Res.19:265–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&author=LL+Day&journal=J.+Plan+Educ.+Res.&volume=19&pages=265-75&publication_year=2000&)\\n024. de VriesS, ClaßenT, Eigenheer-HugS-M, KorpelaK, MaasJ. 24.\\u2002 et al.2011.  Contributions of natural environments to physical activity.  See Ref. 98 205–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&author=S+de+Vries&author=T+Cla%C3%9Fen&author=S-M+Eigenheer-Hug&author=K+Korpela&author=J+Maas&pages=205-43&publication_year=2011&)\\n025. de VriesS, van DillenSME, GroenewegenPP, SpreeuwenbergP. 25.\\u20022013.  Streetscape greenery and health: stress, social cohesion and physical activity as mediators. Soc. Sci. Med.94:26–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&author=S+de+Vries&author=SME+van+Dillen&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Soc.+Sci.+Med.&volume=94&pages=26-33&publication_year=2013&)\\n026. de VriesS, VerheijRA, GroenewegenPP, SpreeuwenbergP. 26.\\u20022003.  Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. Environ. Plann. A35:1717–31[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&author=S+de+Vries&author=RA+Verheij&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Environ.+Plann.+A&volume=35&pages=1717-31&publication_year=2003&)\\n027. DellaValleCT, TricheEW, LeadererBP, BellML. 27.\\u20022012.  Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. Epidemiology23:55–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&author=CT+DellaValle&author=EW+Triche&author=BP+Leaderer&author=ML+Bell&journal=Epidemiology&volume=23&pages=55-63&publication_year=2012&)\\n028. Den HertogF, BronkhorstM, MoermanM, Van WilgenburgR. 28.\\u20022006. De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit \\\\[The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity\\\\]. Amsterdam: EMGO Inst.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&author=F+Den+Hertog&author=M+Bronkhorst&author=M+Moerman&author=R+Van+Wilgenburg&publication_year=2006&)\\n029. DingD, SallisJF, KerrJ, LeeS, RosenbergDE. 29.\\u20022011.  Neighborhood environment and physical activity among youth: a review. Am. J. Prev. Med.41:442–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&author=D+Ding&author=JF+Sallis&author=J+Kerr&author=S+Lee&author=DE+Rosenberg&journal=Am.+J.+Prev.+Med.&volume=41&pages=442-55&publication_year=2011&)\\n030. DommJ, DrewR, GreeneA, RipleyE, SmardonR, TordesillasJ. 30.\\u20022008.  Recommended urban forest mixtures to optimize selected environmental benefits. EnviroNews: Int. Soc. Environ. Bot.14:7–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&author=J+Domm&author=R+Drew&author=A+Greene&author=E+Ripley&author=R+Smardon&author=J+Tordesillas&journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&volume=14&pages=7-10&publication_year=2008&)\\n031. DonovanGH, PrestemonJP. 31.\\u20022012.  The effect of trees on crime in Portland, Oregon. Environ. Behav.44:3–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&author=GH+Donovan&author=JP+Prestemon&journal=Environ.+Behav.&volume=44&pages=3-30&publication_year=2012&)\\n032. EidJ, OvermanHG, PugaD, TurnerMA. 32.\\u20022008.  Fat city: questioning the relationship between urban sprawl and obesity. J. Urban Econ.63:385–404[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&author=J+Eid&author=HG+Overman&author=D+Puga&author=MA+Turner&journal=J.+Urban+Econ.&volume=63&pages=385-404&publication_year=2008&)\\n033. EngelGL. 33.\\u20021977.  The need for a new medical model: a challenge for biomedicine. Science196:129–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&author=GL+Engel&journal=Science&volume=196&pages=129-36&publication_year=1977&)\\n034. EscobedoFJ, NowakDJ. 34.\\u20022009.  Spatial heterogeneity and air pollution removal by an urban forest. Landsc. Urban Plann.90:102–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&author=FJ+Escobedo&author=DJ+Nowak&journal=Landsc.+Urban+Plann.&volume=90&pages=102-10&publication_year=2009&)\\n035. FerdinandAO, SenB, RahurkarS, EnglerS, MenachemiN. 35.\\u20022012.  The relationship between built environments and physical activity: a systematic review. Am. J. Public Health102:e7–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&author=AO+Ferdinand&author=B+Sen&author=S+Rahurkar&author=S+Engler&author=N+Menachemi&journal=Am.+J.+Public+Health&volume=102&pages=e7-13&publication_year=2012&)\\n036. ForrestR, KearnsA. 36.\\u20022001.  Social cohesion, social capital and the neighbourhood. Urban Stud.38:2125–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&author=R+Forrest&author=A+Kearns&journal=Urban+Stud.&volume=38&pages=2125-43&publication_year=2001&)\\n037. FowlerD. 37.\\u20022002.  Pollutant deposition and uptake by vegetation. Air Pollution and Plant Life JNB Bell, M Treshow 43–67 New York: Wiley, 2nd ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&author=D+Fowler&journal=Air+Pollution+and+Plant+Life&pages=43-67&publication_year=2002&)\\n038. FrancisJ, Giles-CortiB, WoodL, KnuimanM. 38.\\u20022012.  Creating sense of community: the role of public space. J. Environ. Psychol.32:401–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&author=J+Francis&author=B+Giles-Corti&author=L+Wood&author=M+Knuiman&journal=J.+Environ.+Psychol.&volume=32&pages=401-9&publication_year=2012&)\\n039. FrancisJ, WoodLJ, KnuimanM, Giles-CortiB. 39.\\u20022012.  Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. Soc. Sci. Med.74:1570–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&author=J+Francis&author=LJ+Wood&author=M+Knuiman&author=B+Giles-Corti&journal=Soc.+Sci.+Med.&volume=74&pages=1570-77&publication_year=2012&)\\n040. FraserSDS, LockK. 40.\\u20022011.  Cycling for transport and public health: a systematic review of the effect of the environment on cycling. Eur. J. Public Health21:738–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&author=SDS+Fraser&author=K+Lock&journal=Eur.+J.+Public+Health&volume=21&pages=738-43&publication_year=2011&)\\n041. FrostSS, GoinsRT, HunterRH, HookerSP, BryantLL. 41.\\u2002 et al.2010.  Effects of the built environment on physical activity of adults living in rural settings. Am. J. Health Promot.24:267–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&author=SS+Frost&author=RT+Goins&author=RH+Hunter&author=SP+Hooker&author=LL+Bryant&journal=Am.+J.+Health+Promot.&volume=24&pages=267-83&publication_year=2010&)\\n042. FrumkinH. 42.\\u20022001.  Beyond toxicity: human health and the natural environment. Am. J. Prev. Med.20:234–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=20&pages=234-40&publication_year=2001&)\\n043. FrumkinH. 43.\\u20022013.  The evidence of nature and the nature of evidence. Am. J. Prev. Med.44:196–97[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=44&pages=196-97&publication_year=2013&)\\n044. GaleaS, VlahovD. 44.\\u20022005.  Urban health: evidence, challenges, and directions. Annu. Rev. Public Health26:341–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&author=S+Galea&author=D+Vlahov&journal=Annu.+Rev.+Public+Health&volume=26&pages=341-65&publication_year=2005&)\\n045. GaterslebenB, AndrewsM. 45.\\u20022013.  When walking in nature is not restorative—the role of prospect and refuge. Health Place20:91–101[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&author=B+Gatersleben&author=M+Andrews&journal=Health+Place&volume=20&pages=91-101&publication_year=2013&)\\n046. Giles-CortiB, BroomhallMH, KnuimanM, CollinsC, DouglasK. 46.\\u2002 et al.2005.  Increasing walking: How important is distance to, attractiveness, and size of public open space?. Am. J. Prev. Med.28:169–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&author=B+Giles-Corti&author=MH+Broomhall&author=M+Knuiman&author=C+Collins&author=K+Douglas&journal=Am.+J.+Prev.+Med.&volume=28&pages=169-76&publication_year=2005&)\\n047. GonzalezMT, HartigT, PatilGG, MartinsenEW, KirkevoldM. 47.\\u20022010.  Therapeutic horticulture in clinical depression: a prospective study of active components. J. Adv. Nurs.66:2002–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&author=MT+Gonzalez&author=T+Hartig&author=GG+Patil&author=EW+Martinsen&author=M+Kirkevold&journal=J.+Adv.+Nurs.&volume=66&pages=2002-13&publication_year=2010&)\\n048. HartigT. 48.\\u20021993.  Nature experience in transactional perspective. Landsc. Urban Plann.25:17–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&author=T+Hartig&journal=Landsc.+Urban+Plann.&volume=25&pages=17-36&publication_year=1993&)\\n049. HartigT, EvansGW, JamnerLD, DavisDS, GärlingT. 49.\\u20022003.  Tracking restoration in natural and urban field settings. J. Environ. Psychol.23:109–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&author=T+Hartig&author=GW+Evans&author=LD+Jamner&author=DS+Davis&author=T+G%C3%A4rling&journal=J.+Environ.+Psychol.&volume=23&pages=109-23&publication_year=2003&)\\n050. HartigT, FranssonU. 50.\\u20022009.  Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. Environ. Plann. A41:82–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&author=T+Hartig&author=U+Fransson&journal=Environ.+Plann.+A&volume=41&pages=82-96&publication_year=2009&)\\n051. HartigT, JohanssonG, KylinC. 51.\\u20022003.  Residence in the social ecology of stress and restoration. J. Soc. Iss.59:611–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&author=T+Hartig&author=G+Johansson&author=C+Kylin&journal=J.+Soc.+Iss.&volume=59&pages=611-36&publication_year=2003&)\\n052. HartigT, MangM, EvansGW. 52.\\u20021991.  Restorative effects of natural environment experiences. Environ. Behav.23:3–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&author=T+Hartig&author=M+Mang&author=GW+Evans&journal=Environ.+Behav.&volume=23&pages=3-26&publication_year=1991&)\\n053. HartigT, van den BergAE, HagerhallCM, TomalakM, BauerN. 53.\\u2002 et al.2011.  Health benefits of nature experience: psychological, social and cultural processes.  See Ref. 98 127–68\\n054. 54.\\u2002Health Counc. Neth2004. Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being. The Hague: Health Counc. Neth., RMNO [http://www.gezondheidsraad.nl/sites/default/files/Nature\\\\_and\\\\_health.pdf](http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&publication_year=2004&)\\n055. HeinenE, van WeeB, MaatK. 55.\\u20022010.  Commuting by bicycle: an overview of the literature. Transp. Rev.30:59–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&author=E+Heinen&author=B+van+Wee&author=K+Maat&journal=Transp.+Rev.&volume=30&pages=59-96&publication_year=2010&)\\n056. HillsdonM, PanterJ, FosterC, JonesA. 56.\\u20022006.  The relationship between access and quality of urban green space with population physical activity. Public Health120:1127–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&author=M+Hillsdon&author=J+Panter&author=C+Foster&author=A+Jones&journal=Public+Health&volume=120&pages=1127-32&publication_year=2006&)\\n057. Holt-LunstadJ, SmithTB, LaytonJB. 57.\\u20022010.  Social relationships and mortality risk: a meta-analytic review. PLoS Med.7:e1000316[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&author=J+Holt-Lunstad&author=TB+Smith&author=JB+Layton&journal=PLoS+Med.&volume=7&pages=e1000316&publication_year=2010&)\\n058. HomeR, HunzikerM, BauerN. 58.\\u20022012.  Psychosocial outcomes as motivations for visiting nearby urban green spaces. Leis. Sci.34:350–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&author=R+Home&author=M+Hunziker&author=N+Bauer&journal=Leis.+Sci.&volume=34&pages=350-65&publication_year=2012&)\\n059. IslamMN, RahmanK-S, BaharMM, HabibMA, AndoK, HattoriN. 59.\\u20022012.  Pollution attenuation by roadside greenbelt in and around urban areas. Urban For. Urban Green.11:460–64[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&author=MN+Islam&author=K-S+Rahman&author=MM+Bahar&author=MA+Habib&author=K+Ando&author=N+Hattori&journal=Urban+For.+Urban+Green.&volume=11&pages=460-64&publication_year=2012&)\\n060. JahnckeH, HyggeS, HalinN, GreenAM, DimbergK. 60.\\u20022011.  Open-plan office noise: cognitive performance and restoration. J. Environ. Psychol.31:373–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&author=H+Jahncke&author=S+Hygge&author=N+Halin&author=AM+Green&author=K+Dimberg&journal=J.+Environ.+Psychol.&volume=31&pages=373-82&publication_year=2011&)\\n061. JanssenI, LeBlancAG. 61.\\u20022010.  Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. Int. J. Behav. Nutr. Phys. Act.7:40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&author=I+Janssen&author=AG+LeBlanc&journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&volume=7&pages=40&publication_year=2010&)\\n062. JanssonM, ForsH, LindgrenT, WiströmB. 62.\\u20022013.  Perceived personal safety in relation to urban woodland vegetation—a review. Urban For. Urban Green.12:127–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&author=M+Jansson&author=H+Fors&author=T+Lindgren&author=B+Wistr%C3%B6m&journal=Urban+For.+Urban+Green.&volume=12&pages=127-33&publication_year=2013&)\\n063. JimCY, ChenWY. 63.\\u20022008.  Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). J. Environ. Manag.88:665–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&author=CY+Jim&author=WY+Chen&journal=J.+Environ.+Manag.&volume=88&pages=665-76&publication_year=2008&)\\n064. JohanssonM, HartigT, StaatsH. 64.\\u20022011.  Psychological benefits of walking: moderation by company and outdoor environment. Appl. Psychol. Health Well-Being3:261–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&author=M+Johansson&author=T+Hartig&author=H+Staats&journal=Appl.+Psychol.+Health+Well-Being&volume=3&pages=261-80&publication_year=2011&)\\n065. KaczynskiAT, HendersonKA. 65.\\u20022007.  Environmental correlates of physical activity: a review of evidence about parks and recreation. Leis. Sci.29:315–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&author=AT+Kaczynski&author=KA+Henderson&journal=Leis.+Sci.&volume=29&pages=315-54&publication_year=2007&)\\n066. KaplanR. 66.\\u20021993.  The role of nature in the context of the workplace. Landsc. Urban Plann.26:193–201[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&author=R+Kaplan&journal=Landsc.+Urban+Plann.&volume=26&pages=193-201&publication_year=1993&)\\n067. KaplanR, KaplanS. 67.\\u20021989. The Experience of Nature: A Psychological Perspective New York: Cambridge Univ. Press\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&author=R+Kaplan&author=S+Kaplan&publication_year=1989&)\\n068. KaplanS. 68.\\u20021995.  The restorative benefits of nature: toward an integrative framework. J. Environ. Psychol.15:169–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&author=S+Kaplan&journal=J.+Environ.+Psychol.&volume=15&pages=169-82&publication_year=1995&)\\n069. KaplanS. 69.\\u20022001.  Meditation, restoration, and the management of mental fatigue. Environ. Behav.33:480–506[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&author=S+Kaplan&journal=Environ.+Behav.&volume=33&pages=480-506&publication_year=2001&)\\n070. KarlT, HarleyP, EmmonsL, ThorntonB, GuentherA. 70.\\u2002 et al.2010.  Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. Science330:816–19[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&author=T+Karl&author=P+Harley&author=L+Emmons&author=B+Thornton&author=A+Guenther&journal=Science&volume=330&pages=816-19&publication_year=2010&)\\n071. KaźmierczakA. 71.\\u20022013.  The contribution of local parks to neighbourhood social ties. Landsc. Urban Plann.109:31–44[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&author=A+Ka%C5%BAmierczak&journal=Landsc.+Urban+Plann.&volume=109&pages=31-44&publication_year=2013&)\\n072. KnopfRC. 72.\\u20021987.  Human behavior, cognition, and affect in the natural environment. Handbook of Environmental Psychology D Stokols, I Altman 783–825 New York: Wiley\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&author=RC+Knopf&journal=Handbook+of+Environmental+Psychology&pages=783-825&publication_year=1987&)\\n073. KorpelaK, HartigT. 73.\\u20021996.  Restorative qualities of favorite places. J. Environ. Psychol.16:221–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&author=K+Korpela&author=T+Hartig&journal=J.+Environ.+Psychol.&volume=16&pages=221-33&publication_year=1996&)\\n074. KrollJH, SeinfeldJH. 74.\\u20022008.  Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. Atmos. Environ.42:3593–624[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&author=JH+Kroll&author=JH+Seinfeld&journal=Atmos.+Environ.&volume=42&pages=3593-624&publication_year=2008&)\\n075. KuoFE, SullivanWC. 75.\\u20022001.  Aggression and violence in the inner city: effects of environment via mental fatigue. Environ. Behav.33:543–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=543-71&publication_year=2001&)\\n076. KuoFE, SullivanWC. 76.\\u20022001.  Environment and crime in the inner city: Does vegetation reduce crime?. Environ. Behav.33:343–67[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=343-67&publication_year=2001&)\\n077. KuoFE, SullivanWC, ColeyRL, BrunsonL. 77.\\u20021998.  Fertile ground for community: inner-city neighborhood common spaces. Am. J. Community Psychol.26:823–51[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&author=FE+Kuo&author=WC+Sullivan&author=RL+Coley&author=L+Brunson&journal=Am.+J.+Community+Psychol.&volume=26&pages=823-51&publication_year=1998&)\\n078. LachowyczK, JonesAP. 78.\\u20022011.  Greenspace and obesity: a systematic review of the evidence. Obes. Rev.12:e183–89[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&author=K+Lachowycz&author=AP+Jones&journal=Obes.+Rev.&volume=12&pages=e183-89&publication_year=2011&)\\n079. LachowyczK, JonesAP. 79.\\u20022013.  Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. Landsc. Urban Plann.118:62–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&author=K+Lachowycz&author=AP+Jones&journal=Landsc.+Urban+Plann.&volume=118&pages=62-69&publication_year=2013&)\\n080. LindheimR, SymeSL. 80.\\u20021983.  Environments, people, and health. Annu. Rev. Public Health4:335–59[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&author=R+Lindheim&author=SL+Syme&journal=Annu.+Rev.+Public+Health&volume=4&pages=335-59&publication_year=1983&)\\n081. LiuY-J, MuY-J, ZhuY-G, DingH, ArensNC. 81.\\u20022007.  Which ornamental plant species effectively remove benzene from indoor air?. Atmos. Environ.41:650–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&author=Y-J+Liu&author=Y-J+Mu&author=Y-G+Zhu&author=H+Ding&author=NC+Arens&journal=Atmos.+Environ.&volume=41&pages=650-54&publication_year=2007&)\\n082. LloydGER, ChadwickJ, MannWN. 82.\\u20021978. Hippocratic Writings Harmondsworth: Penguin\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&author=GER+Lloyd&author=J+Chadwick&author=WN+Mann&publication_year=1978&)\\n083. LovasiGS, O\\'Neil-DunneJP, LuJW, SheehanD, PerzanowskiMS. 83.\\u2002 et al.2013.  Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. Environ. Health Perspect.121:494–500 00e1–6\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&author=GS+Lovasi&author=JP+O%27Neil-Dunne&author=JW+Lu&author=D+Sheehan&author=MS+Perzanowski&journal=Environ.+Health+Perspect.&volume=121&pages=494-500&publication_year=2013&)\\n084. MaasJ, SpreeuwenbergP, van Winsum-WestraM, VerheijRA, de VriesS, GroenewegenPP. 84.\\u20022009.  Is green space in the living environment associated with people\\'s feelings of social safety?. Environ. Plann. A41:1763–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&author=J+Maas&author=P+Spreeuwenberg&author=M+van+Winsum-Westra&author=RA+Verheij&author=S+de+Vries&author=PP+Groenewegen&journal=Environ.+Plann.+A&volume=41&pages=1763-77&publication_year=2009&)\\n085. MaasJ, van DillenSM, VerheijRA, GroenewegenPP. 85.\\u20022009.  Social contacts as a possible mechanism behind the relation between green space and health. Health Place15:586–95[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&author=J+Maas&author=SM+van+Dillen&author=RA+Verheij&author=PP+Groenewegen&journal=Health+Place&volume=15&pages=586-95&publication_year=2009&)\\n086. MaasJ, VerheijRA, de VriesS, SpreeuwenbergP, SchellevisFG, GroenewegenPP. 86.\\u20022009.  Morbidity is related to a green living environment. J. Epidemiol. Community Health63:967–73[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&author=J+Maas&author=RA+Verheij&author=S+de+Vries&author=P+Spreeuwenberg&author=FG+Schellevis&author=PP+Groenewegen&journal=J.+Epidemiol.+Community+Health&volume=63&pages=967-73&publication_year=2009&)\\n087. MaasJ, VerheijRA, GroenewegenPP, de VriesS, SpreeuwenbergP. 87.\\u20022006.  Green space, urbanity, and health: How strong is the relation?. J. Epidemiol. Community Health60:587–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&author=S+de+Vries&author=P+Spreeuwenberg&journal=J.+Epidemiol.+Community+Health&volume=60&pages=587-92&publication_year=2006&)\\n088. MaasJ, VerheijRA, SpreeuwenbergP, GroenewegenPP. 88.\\u20022008.  Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. BMC Public Health8:206[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&author=J+Maas&author=RA+Verheij&author=P+Spreeuwenberg&author=PP+Groenewegen&journal=BMC+Public+Health&volume=8&pages=206&publication_year=2008&)\\n089. MallerC, TownsendM, St LegerL, Henderson-WilsonC, PryorA. 89.\\u2002 et al.2008. Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context Melbourne, Aust.: Deakin Univ.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&author=C+Maller&author=M+Townsend&author=L+St+Leger&author=C+Henderson-Wilson&author=A+Pryor&publication_year=2008&)\\n090. McCormackGR, RockM, TooheyAM, HignellD. 90.\\u20022010.  Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. Health Place16:712–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&author=GR+McCormack&author=M+Rock&author=AM+Toohey&author=D+Hignell&journal=Health+Place&volume=16&pages=712-26&publication_year=2010&)\\n091. McCurdyLE, WinterbottomKE, MehtaSS, RobertsJR. 91.\\u20022010.  Using nature and outdoor activity to improve children\\'s health. Curr. Probl. Pediatr. Adolesc. Health Care40:102–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&author=LE+McCurdy&author=KE+Winterbottom&author=SS+Mehta&author=JR+Roberts&journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&volume=40&pages=102-17&publication_year=2010&)\\n092. MitchellR. 92.\\u20022013.  Is physical activity in natural environments better for mental health than physical activity in other environments?. Soc. Sci. Med.91:130–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=91&pages=130-34&publication_year=2013&)\\n093. MitchellR, PophamF. 93.\\u20022007.  Greenspace, urbanity and health: relationships in England. J. Epidemiol. Community Health61:681–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&author=R+Mitchell&author=F+Popham&journal=J.+Epidemiol.+Community+Health&volume=61&pages=681-83&publication_year=2007&)\\n094. MitchellR, PophamF. 94.\\u20022008.  Effect of exposure to natural environment on health inequalities: an observational population study. Lancet372:1655–60[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&author=R+Mitchell&author=F+Popham&journal=Lancet&volume=372&pages=1655-60&publication_year=2008&)\\n095. MitrioneS. 95.\\u20022008.  Therapeutic responses to natural environments: using gardens to improve health care. Minn. Med.91:31–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&author=S+Mitrione&journal=Minn.+Med.&volume=91&pages=31-34&publication_year=2008&)\\n096. MuñozS-A. 96.\\u20022009. Children in the Outdoors: A Literature Review Forres, Scotl.: Sustain. Dev. Res. Cent.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&author=S-A+Mu%C3%B1oz&publication_year=2009&)\\n097. NieminenT, MartelinT, KoskinenS, AroH, AlanenE, HyyppäMT. 97.\\u20022010.  Social capital as a determinant of self-rated health and psychological well-being. Int. J. Public Health55:531–42[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&author=T+Nieminen&author=T+Martelin&author=S+Koskinen&author=H+Aro&author=E+Alanen&author=MT+Hyypp%C3%A4&journal=Int.+J.+Public+Health&volume=55&pages=531-42&publication_year=2010&)\\n098. NilssonK, SangsterM, GallisC, HartigT, de VriesS. 98.\\u2002 et al.2011. Forests, Trees and Human Health Dordrecht: Springer\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&author=K+Nilsson&author=M+Sangster&author=C+Gallis&author=T+Hartig&author=S+de+Vries&publication_year=2011&)\\n099. NilssonME, BerglundB. 99.\\u20022006.  Soundscape quality in suburban green areas and city parks. Acta Acustica United Acustica92:903–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&author=ME+Nilsson&author=B+Berglund&journal=Acta+Acustica+United+Acustica&volume=92&pages=903-11&publication_year=2006&)\\n100. NowakDJ, CraneDE, StevensJC. 100.\\u20022006.  Air pollution removal by urban trees and shrubs in the United States. Urban For. Urban Green.4:115–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&author=DJ+Nowak&author=DE+Crane&author=JC+Stevens&journal=Urban+For.+Urban+Green.&volume=4&pages=115-23&publication_year=2006&)\\n101. OlmstedFL. 101.\\u20021970 (1870). Public Parks and the Enlargement of Towns New York: Arno (Cambridge, MA: Riverside)\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&author=FL+Olmsted&)\\n102. OrwellRL, WoodRA, BurchettMD, TarranJ, TorpyF. 102.\\u20022006.  The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. Water Air Soil Poll.177:59–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&author=RL+Orwell&author=RA+Wood&author=MD+Burchett&author=J+Tarran&author=F+Torpy&journal=Water+Air+Soil+Poll.&volume=177&pages=59-80&publication_year=2006&)\\n103. PaolettiE, BardelliT, GiovanniniG, PecchioliL. 103.\\u20022011.  Air quality impact of an urban park over time. Procedia Environ. Sci.4:10–16[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&author=E+Paoletti&author=T+Bardelli&author=G+Giovannini&author=L+Pecchioli&journal=Procedia+Environ.+Sci.&volume=4&pages=10-16&publication_year=2011&)\\n104. PowellKE, PaluchAE, BlairSN. 104.\\u20022011.  Physical activity for health: What Kind? How much? How Intense? On Top of What?. Annu. Rev. Public Health32:349–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&author=KE+Powell&author=AE+Paluch&author=SN+Blair&journal=Annu.+Rev.+Public+Health&volume=32&pages=349-65&publication_year=2011&)\\n105. PrettyJ, PeacockJ, SellensM, GriffinM. 105.\\u20022005.  The mental and physical health outcomes of green exercise. Int. J. Environ. Health Res.15:319–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&author=J+Pretty&author=J+Peacock&author=M+Sellens&author=M+Griffin&journal=Int.+J.+Environ.+Health+Res.&volume=15&pages=319-37&publication_year=2005&)\\n106. ProctorJD. 106.\\u20021998.  The social construction of nature: relativist accusations, pragmatist and critical realist responses. Ann. Assoc. Am. Geogr.88:352–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&author=JD+Proctor&journal=Ann.+Assoc.+Am.+Geogr.&volume=88&pages=352-76&publication_year=1998&)\\n107. RichardsonEA, MitchellR. 107.\\u20022010.  Gender differences in relationships between urban green space and health in the United Kingdom. Soc. Sci. Med.71:568–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&author=EA+Richardson&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=71&pages=568-75&publication_year=2010&)\\n108. RichardsonEA, MitchellR, HartigT, de VriesS, Astell-BurtT, FrumkinH. 108.\\u20022012.  Green cities and health: a question of scale?. J. Epidemiol. Community Health66:160–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&author=EA+Richardson&author=R+Mitchell&author=T+Hartig&author=S+de+Vries&author=T+Astell-Burt&author=H+Frumkin&journal=J.+Epidemiol.+Community+Health&volume=66&pages=160-65&publication_year=2012&)\\n109. RichardsonEA, PearceJ, MitchellR, KinghamS. 109.\\u20022013.  Role of physical activity in the relationship between urban green space and health. Public Health127:318–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&author=EA+Richardson&author=J+Pearce&author=R+Mitchell&author=S+Kingham&journal=Public+Health&volume=127&pages=318-24&publication_year=2013&)\\n110. RiosR, AikenLS, ZautraAJ. 110.\\u20022012.  Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. Ann. Behav. Med.43:50–61[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&author=R+Rios&author=LS+Aiken&author=AJ+Zautra&journal=Ann.+Behav.+Med.&volume=43&pages=50-61&publication_year=2012&)\\n111. RoseG. 111.\\u20022001.  Sick individuals and sick populations. Int. J. Epidemiol.30:427–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&author=G+Rose&journal=Int.+J.+Epidemiol.&volume=30&pages=427-32&publication_year=2001&)\\n112. SarteletKN, CouvidatF, SeigneurC, RoustanY. 112.\\u20022012.  Impact of biogenic emissions on air quality over Europe and North America. Atmos. Environ.53:131–41[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&author=KN+Sartelet&author=F+Couvidat&author=C+Seigneur&author=Y+Roustan&journal=Atmos.+Environ.&volume=53&pages=131-41&publication_year=2012&)\\n113. SetäläH, ViippolaV, RantalainenAL, PennanenA, Yli-PelkonenV. 113.\\u20022012.  Does urban vegetation mitigate air pollution in northern conditions?. Environ. Pollut.183:104–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&author=H+Set%C3%A4l%C3%A4&author=V+Viippola&author=AL+Rantalainen&author=A+Pennanen&author=V+Yli-Pelkonen&journal=Environ.+Pollut.&volume=183&pages=104-12&publication_year=2012&)\\n114. SimpsonJR, McPhersonEG. 114.\\u20021998.  Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. Atmos. Environ.32:69–74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&author=JR+Simpson&author=EG+McPherson&journal=Atmos.+Environ.&volume=32&pages=69-74&publication_year=1998&)\\n115. SmardonRC. 115.\\u20021988.  Perception and aesthetics of the urban environment: review of the role of vegetation. Landsc. Urban Plann.15:85–106[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&author=RC+Smardon&journal=Landsc.+Urban+Plann.&volume=15&pages=85-106&publication_year=1988&)\\n116. StaatsH, Van GemerdenE, HartigT. 116.\\u20022010.  Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. Leis. Sci.32:401–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&author=H+Staats&author=E+Van+Gemerden&author=T+Hartig&journal=Leis.+Sci.&volume=32&pages=401-17&publication_year=2010&)\\n117. StigsdotterUK, EkholmO, SchipperijnJ, ToftagerM, Kamper-JørgensenF, RandrupTB. 117.\\u20022010.  Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. Scand. J. Public Health38:411–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&author=UK+Stigsdotter&author=O+Ekholm&author=J+Schipperijn&author=M+Toftager&author=F+Kamper-J%C3%B8rgensen&author=TB+Randrup&journal=Scand.+J.+Public+Health&volume=38&pages=411-17&publication_year=2010&)\\n118. SugiyamaT, LeslieE, Giles-CortiB, OwenN. 118.\\u20022008.  Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. J. Epidemiol. Community Health62:e9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&author=T+Sugiyama&author=E+Leslie&author=B+Giles-Corti&author=N+Owen&journal=J.+Epidemiol.+Community+Health&volume=62&pages=e9&publication_year=2008&)\\n119. TakanoT, NakamuraK, WatanabeM. 119.\\u20022002.  Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. J. Epidemiol. Community Health56:913–18[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&author=T+Takano&author=K+Nakamura&author=M+Watanabe&journal=J.+Epidemiol.+Community+Health&volume=56&pages=913-18&publication_year=2002&)\\n120. TallisM, TaylorG, SinnettD, Freer-SmithP. 120.\\u20022011.  Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. Landsc. Urban Plann.103:129–38[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&author=M+Tallis&author=G+Taylor&author=D+Sinnett&author=P+Freer-Smith&journal=Landsc.+Urban+Plann.&volume=103&pages=129-38&publication_year=2011&)\\n121. TaylorAF, KuoFE. 121.\\u20022009.  Children with attention deficits concentrate better after walk in the park. J. Atten. Disord.12:402–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&author=AF+Taylor&author=FE+Kuo&journal=J.+Atten.+Disord.&volume=12&pages=402-9&publication_year=2009&)\\n122. TaylorAF, KuoFE, SullivanWC. 122.\\u20022002.  Views of nature and self-discipline: evidence from inner city children. J. Environ. Psychol.22:49–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&author=AF+Taylor&author=FE+Kuo&author=WC+Sullivan&journal=J.+Environ.+Psychol.&volume=22&pages=49-63&publication_year=2002&)\\n123. Thompson CoonJ, BoddyK, SteinK, WhearR, BartonJ, DepledgeMH. 123.\\u20022011.  Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. Environ. Sci. Technol.45:1761–72[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&author=J+Thompson+Coon&author=K+Boddy&author=K+Stein&author=R+Whear&author=J+Barton&author=MH+Depledge&journal=Environ.+Sci.+Technol.&volume=45&pages=1761-72&publication_year=2011&)\\n124. TsunetsuguY, ParkB, MiyazakiY. 124.\\u20022010.  Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. Environ. Health Prevent. Med.15:27–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&author=Y+Tsunetsugu&author=B+Park&author=Y+Miyazaki&journal=Environ.+Health+Prevent.+Med.&volume=15&pages=27-37&publication_year=2010&)\\n125. UlrichRS. 125.\\u20021979.  Visual landscapes and psychological well-being. Landsc. Res.4:17–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&author=RS+Ulrich&journal=Landsc.+Res.&volume=4&pages=17-23&publication_year=1979&)\\n126. UlrichRS. 126.\\u20021983.  Aesthetic and affective response to natural environment. Human Behaviour and Environment: Advances in Theory and Research. Volume\\n     6Behaviour and the Natural Environment, ed. I\\n     Altman, JF Wohlwill 85–125 New York: Plenum\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&author=RS+Ulrich&journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&pages=85-125&publication_year=1983&)\\n127. UlrichRS, SimonsRF, LositoBD, FioritoE, MilesMA, ZelsonM. 127.\\u20021991.  Stress recovery during exposure to natural and urban environments. J. Environ. Psychol.11:201–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&author=RS+Ulrich&author=RF+Simons&author=BD+Losito&author=E+Fiorito&author=MA+Miles&author=M+Zelson&journal=J.+Environ.+Psychol.&volume=11&pages=201-30&publication_year=1991&)\\n128. Van CauwenbergJ, De BourdeaudhuijI, De MeesterF, Van DyckD, SalmonJ. 128.\\u2002 et al.2011.  Relationship between the physical environment and physical activity in older adults: a systematic review. Health Place17:458–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&author=J+Van+Cauwenberg&author=I+De+Bourdeaudhuij&author=F+De+Meester&author=D+Van+Dyck&author=J+Salmon&journal=Health+Place&volume=17&pages=458-69&publication_year=2011&)\\n129. Van den BergAE, CustersMHG. 129.\\u20022011.  Gardening promotes neuroendocrine and affective restoration from stress. J. Health Psychol.16:3–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&author=AE+Van+den+Berg&author=MHG+Custers&journal=J.+Health+Psychol.&volume=16&pages=3-11&publication_year=2011&)\\n130. Van den BergAE, MaasJ, VerheijRA, GroenewegenPP. 130.\\u20022010.  Green space as a buffer between stressful life events and health. Soc. Sci. Med.70:1203–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&author=AE+Van+den+Berg&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&journal=Soc.+Sci.+Med.&volume=70&pages=1203-10&publication_year=2010&)\\n131. Van den BergAE, van Winsum-WestraM, de VriesS, van DillenSME. 131.\\u20022010.  Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. Environ. Health9:74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&author=AE+Van+den+Berg&author=M+van+Winsum-Westra&author=S+de+Vries&author=SME+van+Dillen&journal=Environ.+Health&volume=9&pages=74&publication_year=2010&)\\n132. Van HerzeleA, BellS, HartigT, PodestaMTC, van ZonR. 132.\\u20022011.  Health benefits of nature experience: the challenge of linking practice and research.  See Ref. 98 169–82\\n133. Ward ThompsonC, AspinallP, MontarzinoA. 133.\\u20022008.  The childhood factor: adult visits to green places and the significance of childhood experience. Environ. Behav.40:111–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&author=C+Ward+Thompson&author=P+Aspinall&author=A+Montarzino&journal=Environ.+Behav.&volume=40&pages=111-43&publication_year=2008&)\\n134. Ward ThompsonC, RoeJ, AspinallP, MitchellR, ClowA, MillerD. 134.\\u20022012.  More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. Landsc. Urban Plann.105:221–29[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&author=C+Ward+Thompson&author=J+Roe&author=P+Aspinall&author=R+Mitchell&author=A+Clow&author=D+Miller&journal=Landsc.+Urban+Plann.&volume=105&pages=221-29&publication_year=2012&)\\n135. WellsNM, EvansGW. 135.\\u20022003.  Nearby nature—a buffer of life stress among rural children. Environ. Behav.35:311–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&author=NM+Wells&author=GW+Evans&journal=Environ.+Behav.&volume=35&pages=311-30&publication_year=2003&)\\n136. WellsNM, LekiesKS. 136.\\u20022006.  Nature and the life course: pathways from childhood nature experiences to adult environmentalism. Child. Youth Environ.16:1–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&author=NM+Wells&author=KS+Lekies&journal=Child.+Youth+Environ.&volume=16&pages=1-24&publication_year=2006&)\\n137. WhitelawS. 137.\\u20022012.  The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. Crit. Public Health22:427–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&author=S+Whitelaw&journal=Crit.+Public+Health&volume=22&pages=427-40&publication_year=2012&)\\n138. 138.\\u2002WHO (World Health Organ.)1946. Preamble to the Constitution of the World Health Organization as adopted by the International Health Conference.  New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&publication_year=1946&)\\n139. WilsonSJ, LipseyMW. 139.\\u20022000.  Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. Eval. Program Plann.23:1–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&author=SJ+Wilson&author=MW+Lipsey&journal=Eval.+Program+Plann.&volume=23&pages=1-12&publication_year=2000&)\\n140. YooMH, KwonYJ, SonKC, KaysSJ. 140.\\u20022006.  Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. J. Am. Soc. Hort. Sci.131:452–58[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&author=MH+Yoo&author=YJ+Kwon&author=KC+Son&author=SJ+Kays&journal=J.+Am.+Soc.+Hort.+Sci.&volume=131&pages=452-58&publication_year=2006&)\\n141. ZickCD, SmithKR, Kowaleski-JonesL, UnoC, MerrillBJ. 141.\\u20022013.  Harvesting more than vegetables: the potential weight control benefits of community gardening. Am. J. Public Health103:e1–6[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&author=CD+Zick&author=KR+Smith&author=L+Kowaleski-Jones&author=C+Uno&author=BJ+Merrill&journal=Am.+J.+Public+Health&volume=103&pages=e1-6&publication_year=2013&)\\n\\nLiterature Cited\\n\\n001. AkbariH, KurnDM, BretzSE, HanfordJW. 1.\\u20021997.  Peak power and cooling energy savings of shade trees. Energy Build.25:139–48[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&author=H+Akbari&author=DM+Kurn&author=SE+Bretz&author=JW+Hanford&journal=Energy+Build.&volume=25&pages=139-48&publication_year=1997&)\\n002. AnnerstedtM, WährborgP. 2.\\u20022011.  Nature-assisted therapy: systematic review of controlled and observational studies. Scand. J. Public Health39:371–88[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&author=M+Annerstedt&author=P+W%C3%A4hrborg&journal=Scand.+J.+Public+Health&volume=39&pages=371-88&publication_year=2011&)\\n003. BartonJ, PrettyJ. 3.\\u20022010.  What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. Environ. Sci. Technol.44:3947–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&author=J+Barton&author=J+Pretty&journal=Environ.+Sci.+Technol.&volume=44&pages=3947-55&publication_year=2010&)\\n004. BaumFE, ZierschAM, ZhangG, OsborneK. 4.\\u20022009.  Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. Health Place15:925–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&author=FE+Baum&author=AM+Ziersch&author=G+Zhang&author=K+Osborne&journal=Health+Place&volume=15&pages=925-34&publication_year=2009&)\\n005. BaumanAE, ReisRS, SallisJF, WellsJC, LoosRJ, MartinBW. 5.\\u20022012.  Correlates of physical activity: Why are some people physically active and others not?. Lancet380:258–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&author=AE+Bauman&author=RS+Reis&author=JF+Sallis&author=JC+Wells&author=RJ+Loos&author=BW+Martin&journal=Lancet&volume=380&pages=258-71&publication_year=2012&)\\n006. BeckAM, MeyersNM. 6.\\u20021996.  Health enhancement and companion animal ownership. Annu. Rev. Public Health17:247–57[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&author=AM+Beck&author=NM+Meyers&journal=Annu.+Rev.+Public+Health&volume=17&pages=247-57&publication_year=1996&)\\n007. BeckettKP, Freer-SmithPH, TaylorG. 7.\\u20022000.  The capture of particulate pollution by trees at five contrasting urban sites. Arboric. J.24:209–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&author=KP+Beckett&author=PH+Freer-Smith&author=G+Taylor&journal=Arboric.+J.&volume=24&pages=209-30&publication_year=2000&)\\n008. Bedimo-RungAL, MowenAJ, CohenDA. 8.\\u20022005.  The significance of parks to physical activity and public health: a conceptual model. Am. J. Prev. Med.28:159–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&author=AL+Bedimo-Rung&author=AJ+Mowen&author=DA+Cohen&journal=Am.+J.+Prev.+Med.&volume=28&pages=159-68&publication_year=2005&)\\n009. BenjaminMT, WinerAM. 9.\\u20021998.  Estimating the ozone-forming potential of urban trees and shrubs. Atmos. Environ.32:53–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&author=MT+Benjamin&author=AM+Winer&journal=Atmos.+Environ.&volume=32&pages=53-68&publication_year=1998&)\\n010. BizeR, JohnsonJA, PlotnikoffRC. 10.\\u20022007.  Physical activity level and health-related quality of life in the general adult population: a systematic review. Prev. Med.45:401–15[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&author=R+Bize&author=JA+Johnson&author=RC+Plotnikoff&journal=Prev.+Med.&volume=45&pages=401-15&publication_year=2007&)\\n011. BowlerDE, Buyung-AliLM, KnightTM, PullinAS. 11.\\u20022010.  A systematic review of evidence for the added benefits to health of exposure to natural environments. BMC Public Health10:456[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&author=DE+Bowler&author=LM+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=BMC+Public+Health&volume=10&pages=456&publication_year=2010&)\\n012. BowlerDE, Buyung-AliL, KnightTM, PullinAS. 12.\\u20022010.  Urban greening to cool towns and cities: a systematic review of the empirical evidence. Landsc. Urban Plann.97:147–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&author=DE+Bowler&author=L+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=Landsc.+Urban+Plann.&volume=97&pages=147-55&publication_year=2010&)\\n013. BrackCL. 13.\\u20022002.  Pollution mitigation and carbon sequestration by an urban forest. Environ. Pollut.116:S195–200[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&author=CL+Brack&journal=Environ.+Pollut.&volume=116&pages=S195-200&publication_year=2002&)\\n014. BranasCC, CheneyRA, MacDonaldJM, TamVW, JacksonTD, Ten HaveTR. 14.\\u20022011.  A difference-in-differences analysis of health, safety, and greening vacant urban space. Am. J. Epidemiol.174:1296–306[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&author=CC+Branas&author=RA+Cheney&author=JM+MacDonald&author=VW+Tam&author=TD+Jackson&author=TR+Ten+Have&journal=Am.+J.+Epidemiol.&volume=174&pages=1296-306&publication_year=2011&)\\n015. BratmanGN, HamiltonJP, DailyGC. 15.\\u20022012.  The impacts of nature experience on human cognitive function and mental health. Ann. N.Y. Acad. Sci.1249:118–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&author=GN+Bratman&author=JP+Hamilton&author=GC+Daily&journal=Ann.+N.Y.+Acad.+Sci.&volume=1249&pages=118-36&publication_year=2012&)\\n016. BringslimarkT, HartigT, PatilGG. 16.\\u20022009.  The psychological benefits of indoor plants: a critical review of the experimental literature. J. Environ. Psychol.29:422–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&author=T+Bringslimark&author=T+Hartig&author=GG+Patil&journal=J.+Environ.+Psychol.&volume=29&pages=422-33&publication_year=2009&)\\n017. BroekhuizenK, de VriesSI, PierikFH. 17.\\u20022013. Healthy Aging in a Green Living Environment: A Systematic Review of the Literature. TNO rep. R10154 Leiden: TNO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&author=K+Broekhuizen&author=SI+de+Vries&author=FH+Pierik&publication_year=2013&)\\n018. BrooksGD, BushRK. 18.\\u20022009.  Allergens and other factors important in atopic disease. Patterson\\'s Allergic Diseases LC Grammer, PA Greenberger 73–103 Philadelphia: Lippincott, Williams & Wilkins, 7th ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&author=GD+Brooks&author=RK+Bush&journal=Patterson%27s+Allergic+Diseases&pages=73-103&publication_year=2009&)\\n019. CariñanosP, Casares-PorcelM. 19.\\u20022011.  Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. Landsc. Urban Plann.101:205–14[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&author=P+Cari%C3%B1anos&author=M+Casares-Porcel&journal=Landsc.+Urban+Plann.&volume=101&pages=205-14&publication_year=2011&)\\n020. ChameidesWL, LindsayRW, RichardsonJ, KiangCS. 20.\\u20021989.  The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. Science241:1473–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&author=WL+Chameides&author=RW+Lindsay&author=J+Richardson&author=CS+Kiang&journal=Science&volume=241&pages=1473-75&publication_year=1989&)\\n021. CimprichB. 21.\\u20021993.  Development of an intervention to restore attention in cancer patients. Cancer Nurs.16:83–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&author=B+Cimprich&journal=Cancer+Nurs.&volume=16&pages=83-92&publication_year=1993&)\\n022. ColferCJP, SheilD, KishiM. 22.\\u20022006. Forests and Human Health: Assessing the Evidence Bogor, Indones.: Cent. Int. For. Res [http://www.cifor.org/publications/pdf\\\\_files/OccPapers/OP-45.pdf](http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&author=CJP+Colfer&author=D+Sheil&author=M+Kishi&publication_year=2006&)\\n023. DayLL. 23.\\u20022000.  Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. J. Plan Educ. Res.19:265–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&author=LL+Day&journal=J.+Plan+Educ.+Res.&volume=19&pages=265-75&publication_year=2000&)\\n024. de VriesS, ClaßenT, Eigenheer-HugS-M, KorpelaK, MaasJ. 24.\\u2002 et al.2011.  Contributions of natural environments to physical activity.  See Ref. 98 205–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&author=S+de+Vries&author=T+Cla%C3%9Fen&author=S-M+Eigenheer-Hug&author=K+Korpela&author=J+Maas&pages=205-43&publication_year=2011&)\\n025. de VriesS, van DillenSME, GroenewegenPP, SpreeuwenbergP. 25.\\u20022013.  Streetscape greenery and health: stress, social cohesion and physical activity as mediators. Soc. Sci. Med.94:26–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&author=S+de+Vries&author=SME+van+Dillen&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Soc.+Sci.+Med.&volume=94&pages=26-33&publication_year=2013&)\\n026. de VriesS, VerheijRA, GroenewegenPP, SpreeuwenbergP. 26.\\u20022003.  Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. Environ. Plann. A35:1717–31[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&author=S+de+Vries&author=RA+Verheij&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Environ.+Plann.+A&volume=35&pages=1717-31&publication_year=2003&)\\n027. DellaValleCT, TricheEW, LeadererBP, BellML. 27.\\u20022012.  Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. Epidemiology23:55–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&author=CT+DellaValle&author=EW+Triche&author=BP+Leaderer&author=ML+Bell&journal=Epidemiology&volume=23&pages=55-63&publication_year=2012&)\\n028. Den HertogF, BronkhorstM, MoermanM, Van WilgenburgR. 28.\\u20022006. De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit \\\\[The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity\\\\]. Amsterdam: EMGO Inst.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&author=F+Den+Hertog&author=M+Bronkhorst&author=M+Moerman&author=R+Van+Wilgenburg&publication_year=2006&)\\n029. DingD, SallisJF, KerrJ, LeeS, RosenbergDE. 29.\\u20022011.  Neighborhood environment and physical activity among youth: a review. Am. J. Prev. Med.41:442–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&author=D+Ding&author=JF+Sallis&author=J+Kerr&author=S+Lee&author=DE+Rosenberg&journal=Am.+J.+Prev.+Med.&volume=41&pages=442-55&publication_year=2011&)\\n030. DommJ, DrewR, GreeneA, RipleyE, SmardonR, TordesillasJ. 30.\\u20022008.  Recommended urban forest mixtures to optimize selected environmental benefits. EnviroNews: Int. Soc. Environ. Bot.14:7–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&author=J+Domm&author=R+Drew&author=A+Greene&author=E+Ripley&author=R+Smardon&author=J+Tordesillas&journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&volume=14&pages=7-10&publication_year=2008&)\\n031. DonovanGH, PrestemonJP. 31.\\u20022012.  The effect of trees on crime in Portland, Oregon. Environ. Behav.44:3–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&author=GH+Donovan&author=JP+Prestemon&journal=Environ.+Behav.&volume=44&pages=3-30&publication_year=2012&)\\n032. EidJ, OvermanHG, PugaD, TurnerMA. 32.\\u20022008.  Fat city: questioning the relationship between urban sprawl and obesity. J. Urban Econ.63:385–404[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&author=J+Eid&author=HG+Overman&author=D+Puga&author=MA+Turner&journal=J.+Urban+Econ.&volume=63&pages=385-404&publication_year=2008&)\\n033. EngelGL. 33.\\u20021977.  The need for a new medical model: a challenge for biomedicine. Science196:129–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&author=GL+Engel&journal=Science&volume=196&pages=129-36&publication_year=1977&)\\n034. EscobedoFJ, NowakDJ. 34.\\u20022009.  Spatial heterogeneity and air pollution removal by an urban forest. Landsc. Urban Plann.90:102–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&author=FJ+Escobedo&author=DJ+Nowak&journal=Landsc.+Urban+Plann.&volume=90&pages=102-10&publication_year=2009&)\\n035. FerdinandAO, SenB, RahurkarS, EnglerS, MenachemiN. 35.\\u20022012.  The relationship between built environments and physical activity: a systematic review. Am. J. Public Health102:e7–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&author=AO+Ferdinand&author=B+Sen&author=S+Rahurkar&author=S+Engler&author=N+Menachemi&journal=Am.+J.+Public+Health&volume=102&pages=e7-13&publication_year=2012&)\\n036. ForrestR, KearnsA. 36.\\u20022001.  Social cohesion, social capital and the neighbourhood. Urban Stud.38:2125–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&author=R+Forrest&author=A+Kearns&journal=Urban+Stud.&volume=38&pages=2125-43&publication_year=2001&)\\n037. FowlerD. 37.\\u20022002.  Pollutant deposition and uptake by vegetation. Air Pollution and Plant Life JNB Bell, M Treshow 43–67 New York: Wiley, 2nd ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&author=D+Fowler&journal=Air+Pollution+and+Plant+Life&pages=43-67&publication_year=2002&)\\n038. FrancisJ, Giles-CortiB, WoodL, KnuimanM. 38.\\u20022012.  Creating sense of community: the role of public space. J. Environ. Psychol.32:401–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&author=J+Francis&author=B+Giles-Corti&author=L+Wood&author=M+Knuiman&journal=J.+Environ.+Psychol.&volume=32&pages=401-9&publication_year=2012&)\\n039. FrancisJ, WoodLJ, KnuimanM, Giles-CortiB. 39.\\u20022012.  Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. Soc. Sci. Med.74:1570–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&author=J+Francis&author=LJ+Wood&author=M+Knuiman&author=B+Giles-Corti&journal=Soc.+Sci.+Med.&volume=74&pages=1570-77&publication_year=2012&)\\n040. FraserSDS, LockK. 40.\\u20022011.  Cycling for transport and public health: a systematic review of the effect of the environment on cycling. Eur. J. Public Health21:738–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&author=SDS+Fraser&author=K+Lock&journal=Eur.+J.+Public+Health&volume=21&pages=738-43&publication_year=2011&)\\n041. FrostSS, GoinsRT, HunterRH, HookerSP, BryantLL. 41.\\u2002 et al.2010.  Effects of the built environment on physical activity of adults living in rural settings. Am. J. Health Promot.24:267–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&author=SS+Frost&author=RT+Goins&author=RH+Hunter&author=SP+Hooker&author=LL+Bryant&journal=Am.+J.+Health+Promot.&volume=24&pages=267-83&publication_year=2010&)\\n042. FrumkinH. 42.\\u20022001.  Beyond toxicity: human health and the natural environment. Am. J. Prev. Med.20:234–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=20&pages=234-40&publication_year=2001&)\\n043. FrumkinH. 43.\\u20022013.  The evidence of nature and the nature of evidence. Am. J. Prev. Med.44:196–97[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=44&pages=196-97&publication_year=2013&)\\n044. GaleaS, VlahovD. 44.\\u20022005.  Urban health: evidence, challenges, and directions. Annu. Rev. Public Health26:341–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&author=S+Galea&author=D+Vlahov&journal=Annu.+Rev.+Public+Health&volume=26&pages=341-65&publication_year=2005&)\\n045. GaterslebenB, AndrewsM. 45.\\u20022013.  When walking in nature is not restorative—the role of prospect and refuge. Health Place20:91–101[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&author=B+Gatersleben&author=M+Andrews&journal=Health+Place&volume=20&pages=91-101&publication_year=2013&)\\n046. Giles-CortiB, BroomhallMH, KnuimanM, CollinsC, DouglasK. 46.\\u2002 et al.2005.  Increasing walking: How important is distance to, attractiveness, and size of public open space?. Am. J. Prev. Med.28:169–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&author=B+Giles-Corti&author=MH+Broomhall&author=M+Knuiman&author=C+Collins&author=K+Douglas&journal=Am.+J.+Prev.+Med.&volume=28&pages=169-76&publication_year=2005&)\\n047. GonzalezMT, HartigT, PatilGG, MartinsenEW, KirkevoldM. 47.\\u20022010.  Therapeutic horticulture in clinical depression: a prospective study of active components. J. Adv. Nurs.66:2002–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&author=MT+Gonzalez&author=T+Hartig&author=GG+Patil&author=EW+Martinsen&author=M+Kirkevold&journal=J.+Adv.+Nurs.&volume=66&pages=2002-13&publication_year=2010&)\\n048. HartigT. 48.\\u20021993.  Nature experience in transactional perspective. Landsc. Urban Plann.25:17–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&author=T+Hartig&journal=Landsc.+Urban+Plann.&volume=25&pages=17-36&publication_year=1993&)\\n049. HartigT, EvansGW, JamnerLD, DavisDS, GärlingT. 49.\\u20022003.  Tracking restoration in natural and urban field settings. J. Environ. Psychol.23:109–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&author=T+Hartig&author=GW+Evans&author=LD+Jamner&author=DS+Davis&author=T+G%C3%A4rling&journal=J.+Environ.+Psychol.&volume=23&pages=109-23&publication_year=2003&)\\n050. HartigT, FranssonU. 50.\\u20022009.  Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. Environ. Plann. A41:82–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&author=T+Hartig&author=U+Fransson&journal=Environ.+Plann.+A&volume=41&pages=82-96&publication_year=2009&)\\n051. HartigT, JohanssonG, KylinC. 51.\\u20022003.  Residence in the social ecology of stress and restoration. J. Soc. Iss.59:611–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&author=T+Hartig&author=G+Johansson&author=C+Kylin&journal=J.+Soc.+Iss.&volume=59&pages=611-36&publication_year=2003&)\\n052. HartigT, MangM, EvansGW. 52.\\u20021991.  Restorative effects of natural environment experiences. Environ. Behav.23:3–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&author=T+Hartig&author=M+Mang&author=GW+Evans&journal=Environ.+Behav.&volume=23&pages=3-26&publication_year=1991&)\\n053. HartigT, van den BergAE, HagerhallCM, TomalakM, BauerN. 53.\\u2002 et al.2011.  Health benefits of nature experience: psychological, social and cultural processes.  See Ref. 98 127–68\\n054. 54.\\u2002Health Counc. Neth2004. Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being. The Hague: Health Counc. Neth., RMNO [http://www.gezondheidsraad.nl/sites/default/files/Nature\\\\_and\\\\_health.pdf](http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&publication_year=2004&)\\n055. HeinenE, van WeeB, MaatK. 55.\\u20022010.  Commuting by bicycle: an overview of the literature. Transp. Rev.30:59–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&author=E+Heinen&author=B+van+Wee&author=K+Maat&journal=Transp.+Rev.&volume=30&pages=59-96&publication_year=2010&)\\n056. HillsdonM, PanterJ, FosterC, JonesA. 56.\\u20022006.  The relationship between access and quality of urban green space with population physical activity. Public Health120:1127–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&author=M+Hillsdon&author=J+Panter&author=C+Foster&author=A+Jones&journal=Public+Health&volume=120&pages=1127-32&publication_year=2006&)\\n057. Holt-LunstadJ, SmithTB, LaytonJB. 57.\\u20022010.  Social relationships and mortality risk: a meta-analytic review. PLoS Med.7:e1000316[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&author=J+Holt-Lunstad&author=TB+Smith&author=JB+Layton&journal=PLoS+Med.&volume=7&pages=e1000316&publication_year=2010&)\\n058. HomeR, HunzikerM, BauerN. 58.\\u20022012.  Psychosocial outcomes as motivations for visiting nearby urban green spaces. Leis. Sci.34:350–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&author=R+Home&author=M+Hunziker&author=N+Bauer&journal=Leis.+Sci.&volume=34&pages=350-65&publication_year=2012&)\\n059. IslamMN, RahmanK-S, BaharMM, HabibMA, AndoK, HattoriN. 59.\\u20022012.  Pollution attenuation by roadside greenbelt in and around urban areas. Urban For. Urban Green.11:460–64[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&author=MN+Islam&author=K-S+Rahman&author=MM+Bahar&author=MA+Habib&author=K+Ando&author=N+Hattori&journal=Urban+For.+Urban+Green.&volume=11&pages=460-64&publication_year=2012&)\\n060. JahnckeH, HyggeS, HalinN, GreenAM, DimbergK. 60.\\u20022011.  Open-plan office noise: cognitive performance and restoration. J. Environ. Psychol.31:373–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&author=H+Jahncke&author=S+Hygge&author=N+Halin&author=AM+Green&author=K+Dimberg&journal=J.+Environ.+Psychol.&volume=31&pages=373-82&publication_year=2011&)\\n061. JanssenI, LeBlancAG. 61.\\u20022010.  Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. Int. J. Behav. Nutr. Phys. Act.7:40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&author=I+Janssen&author=AG+LeBlanc&journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&volume=7&pages=40&publication_year=2010&)\\n062. JanssonM, ForsH, LindgrenT, WiströmB. 62.\\u20022013.  Perceived personal safety in relation to urban woodland vegetation—a review. Urban For. Urban Green.12:127–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&author=M+Jansson&author=H+Fors&author=T+Lindgren&author=B+Wistr%C3%B6m&journal=Urban+For.+Urban+Green.&volume=12&pages=127-33&publication_year=2013&)\\n063. JimCY, ChenWY. 63.\\u20022008.  Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). J. Environ. Manag.88:665–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&author=CY+Jim&author=WY+Chen&journal=J.+Environ.+Manag.&volume=88&pages=665-76&publication_year=2008&)\\n064. JohanssonM, HartigT, StaatsH. 64.\\u20022011.  Psychological benefits of walking: moderation by company and outdoor environment. Appl. Psychol. Health Well-Being3:261–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&author=M+Johansson&author=T+Hartig&author=H+Staats&journal=Appl.+Psychol.+Health+Well-Being&volume=3&pages=261-80&publication_year=2011&)\\n065. KaczynskiAT, HendersonKA. 65.\\u20022007.  Environmental correlates of physical activity: a review of evidence about parks and recreation. Leis. Sci.29:315–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&author=AT+Kaczynski&author=KA+Henderson&journal=Leis.+Sci.&volume=29&pages=315-54&publication_year=2007&)\\n066. KaplanR. 66.\\u20021993.  The role of nature in the context of the workplace. Landsc. Urban Plann.26:193–201[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&author=R+Kaplan&journal=Landsc.+Urban+Plann.&volume=26&pages=193-201&publication_year=1993&)\\n067. KaplanR, KaplanS. 67.\\u20021989. The Experience of Nature: A Psychological Perspective New York: Cambridge Univ. Press\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&author=R+Kaplan&author=S+Kaplan&publication_year=1989&)\\n068. KaplanS. 68.\\u20021995.  The restorative benefits of nature: toward an integrative framework. J. Environ. Psychol.15:169–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&author=S+Kaplan&journal=J.+Environ.+Psychol.&volume=15&pages=169-82&publication_year=1995&)\\n069. KaplanS. 69.\\u20022001.  Meditation, restoration, and the management of mental fatigue. Environ. Behav.33:480–506[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&author=S+Kaplan&journal=Environ.+Behav.&volume=33&pages=480-506&publication_year=2001&)\\n070. KarlT, HarleyP, EmmonsL, ThorntonB, GuentherA. 70.\\u2002 et al.2010.  Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. Science330:816–19[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&author=T+Karl&author=P+Harley&author=L+Emmons&author=B+Thornton&author=A+Guenther&journal=Science&volume=330&pages=816-19&publication_year=2010&)\\n071. KaźmierczakA. 71.\\u20022013.  The contribution of local parks to neighbourhood social ties. Landsc. Urban Plann.109:31–44[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&author=A+Ka%C5%BAmierczak&journal=Landsc.+Urban+Plann.&volume=109&pages=31-44&publication_year=2013&)\\n072. KnopfRC. 72.\\u20021987.  Human behavior, cognition, and affect in the natural environment. Handbook of Environmental Psychology D Stokols, I Altman 783–825 New York: Wiley\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&author=RC+Knopf&journal=Handbook+of+Environmental+Psychology&pages=783-825&publication_year=1987&)\\n073. KorpelaK, HartigT. 73.\\u20021996.  Restorative qualities of favorite places. J. Environ. Psychol.16:221–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&author=K+Korpela&author=T+Hartig&journal=J.+Environ.+Psychol.&volume=16&pages=221-33&publication_year=1996&)\\n074. KrollJH, SeinfeldJH. 74.\\u20022008.  Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. Atmos. Environ.42:3593–624[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&author=JH+Kroll&author=JH+Seinfeld&journal=Atmos.+Environ.&volume=42&pages=3593-624&publication_year=2008&)\\n075. KuoFE, SullivanWC. 75.\\u20022001.  Aggression and violence in the inner city: effects of environment via mental fatigue. Environ. Behav.33:543–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=543-71&publication_year=2001&)\\n076. KuoFE, SullivanWC. 76.\\u20022001.  Environment and crime in the inner city: Does vegetation reduce crime?. Environ. Behav.33:343–67[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=343-67&publication_year=2001&)\\n077. KuoFE, SullivanWC, ColeyRL, BrunsonL. 77.\\u20021998.  Fertile ground for community: inner-city neighborhood common spaces. Am. J. Community Psychol.26:823–51[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&author=FE+Kuo&author=WC+Sullivan&author=RL+Coley&author=L+Brunson&journal=Am.+J.+Community+Psychol.&volume=26&pages=823-51&publication_year=1998&)\\n078. LachowyczK, JonesAP. 78.\\u20022011.  Greenspace and obesity: a systematic review of the evidence. Obes. Rev.12:e183–89[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&author=K+Lachowycz&author=AP+Jones&journal=Obes.+Rev.&volume=12&pages=e183-89&publication_year=2011&)\\n079. LachowyczK, JonesAP. 79.\\u20022013.  Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. Landsc. Urban Plann.118:62–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&author=K+Lachowycz&author=AP+Jones&journal=Landsc.+Urban+Plann.&volume=118&pages=62-69&publication_year=2013&)\\n080. LindheimR, SymeSL. 80.\\u20021983.  Environments, people, and health. Annu. Rev. Public Health4:335–59[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&author=R+Lindheim&author=SL+Syme&journal=Annu.+Rev.+Public+Health&volume=4&pages=335-59&publication_year=1983&)\\n081. LiuY-J, MuY-J, ZhuY-G, DingH, ArensNC. 81.\\u20022007.  Which ornamental plant species effectively remove benzene from indoor air?. Atmos. Environ.41:650–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&author=Y-J+Liu&author=Y-J+Mu&author=Y-G+Zhu&author=H+Ding&author=NC+Arens&journal=Atmos.+Environ.&volume=41&pages=650-54&publication_year=2007&)\\n082. LloydGER, ChadwickJ, MannWN. 82.\\u20021978. Hippocratic Writings Harmondsworth: Penguin\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&author=GER+Lloyd&author=J+Chadwick&author=WN+Mann&publication_year=1978&)\\n083. LovasiGS, O\\'Neil-DunneJP, LuJW, SheehanD, PerzanowskiMS. 83.\\u2002 et al.2013.  Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. Environ. Health Perspect.121:494–500 00e1–6\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&author=GS+Lovasi&author=JP+O%27Neil-Dunne&author=JW+Lu&author=D+Sheehan&author=MS+Perzanowski&journal=Environ.+Health+Perspect.&volume=121&pages=494-500&publication_year=2013&)\\n084. MaasJ, SpreeuwenbergP, van Winsum-WestraM, VerheijRA, de VriesS, GroenewegenPP. 84.\\u20022009.  Is green space in the living environment associated with people\\'s feelings of social safety?. Environ. Plann. A41:1763–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&author=J+Maas&author=P+Spreeuwenberg&author=M+van+Winsum-Westra&author=RA+Verheij&author=S+de+Vries&author=PP+Groenewegen&journal=Environ.+Plann.+A&volume=41&pages=1763-77&publication_year=2009&)\\n085. MaasJ, van DillenSM, VerheijRA, GroenewegenPP. 85.\\u20022009.  Social contacts as a possible mechanism behind the relation between green space and health. Health Place15:586–95[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&author=J+Maas&author=SM+van+Dillen&author=RA+Verheij&author=PP+Groenewegen&journal=Health+Place&volume=15&pages=586-95&publication_year=2009&)\\n086. MaasJ, VerheijRA, de VriesS, SpreeuwenbergP, SchellevisFG, GroenewegenPP. 86.\\u20022009.  Morbidity is related to a green living environment. J. Epidemiol. Community Health63:967–73[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&author=J+Maas&author=RA+Verheij&author=S+de+Vries&author=P+Spreeuwenberg&author=FG+Schellevis&author=PP+Groenewegen&journal=J.+Epidemiol.+Community+Health&volume=63&pages=967-73&publication_year=2009&)\\n087. MaasJ, VerheijRA, GroenewegenPP, de VriesS, SpreeuwenbergP. 87.\\u20022006.  Green space, urbanity, and health: How strong is the relation?. J. Epidemiol. Community Health60:587–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&author=S+de+Vries&author=P+Spreeuwenberg&journal=J.+Epidemiol.+Community+Health&volume=60&pages=587-92&publication_year=2006&)\\n088. MaasJ, VerheijRA, SpreeuwenbergP, GroenewegenPP. 88.\\u20022008.  Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. BMC Public Health8:206[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&author=J+Maas&author=RA+Verheij&author=P+Spreeuwenberg&author=PP+Groenewegen&journal=BMC+Public+Health&volume=8&pages=206&publication_year=2008&)\\n089. MallerC, TownsendM, St LegerL, Henderson-WilsonC, PryorA. 89.\\u2002 et al.2008. Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context Melbourne, Aust.: Deakin Univ.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&author=C+Maller&author=M+Townsend&author=L+St+Leger&author=C+Henderson-Wilson&author=A+Pryor&publication_year=2008&)\\n090. McCormackGR, RockM, TooheyAM, HignellD. 90.\\u20022010.  Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. Health Place16:712–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&author=GR+McCormack&author=M+Rock&author=AM+Toohey&author=D+Hignell&journal=Health+Place&volume=16&pages=712-26&publication_year=2010&)\\n091. McCurdyLE, WinterbottomKE, MehtaSS, RobertsJR. 91.\\u20022010.  Using nature and outdoor activity to improve children\\'s health. Curr. Probl. Pediatr. Adolesc. Health Care40:102–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&author=LE+McCurdy&author=KE+Winterbottom&author=SS+Mehta&author=JR+Roberts&journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&volume=40&pages=102-17&publication_year=2010&)\\n092. MitchellR. 92.\\u20022013.  Is physical activity in natural environments better for mental health than physical activity in other environments?. Soc. Sci. Med.91:130–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=91&pages=130-34&publication_year=2013&)\\n093. MitchellR, PophamF. 93.\\u20022007.  Greenspace, urbanity and health: relationships in England. J. Epidemiol. Community Health61:681–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&author=R+Mitchell&author=F+Popham&journal=J.+Epidemiol.+Community+Health&volume=61&pages=681-83&publication_year=2007&)\\n094. MitchellR, PophamF. 94.\\u20022008.  Effect of exposure to natural environment on health inequalities: an observational population study. Lancet372:1655–60[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&author=R+Mitchell&author=F+Popham&journal=Lancet&volume=372&pages=1655-60&publication_year=2008&)\\n095. MitrioneS. 95.\\u20022008.  Therapeutic responses to natural environments: using gardens to improve health care. Minn. Med.91:31–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&author=S+Mitrione&journal=Minn.+Med.&volume=91&pages=31-34&publication_year=2008&)\\n096. MuñozS-A. 96.\\u20022009. Children in the Outdoors: A Literature Review Forres, Scotl.: Sustain. Dev. Res. Cent.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&author=S-A+Mu%C3%B1oz&publication_year=2009&)\\n097. NieminenT, MartelinT, KoskinenS, AroH, AlanenE, HyyppäMT. 97.\\u20022010.  Social capital as a determinant of self-rated health and psychological well-being. Int. J. Public Health55:531–42[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&author=T+Nieminen&author=T+Martelin&author=S+Koskinen&author=H+Aro&author=E+Alanen&author=MT+Hyypp%C3%A4&journal=Int.+J.+Public+Health&volume=55&pages=531-42&publication_year=2010&)\\n098. NilssonK, SangsterM, GallisC, HartigT, de VriesS. 98.\\u2002 et al.2011. Forests, Trees and Human Health Dordrecht: Springer\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&author=K+Nilsson&author=M+Sangster&author=C+Gallis&author=T+Hartig&author=S+de+Vries&publication_year=2011&)\\n099. NilssonME, BerglundB. 99.\\u20022006.  Soundscape quality in suburban green areas and city parks. Acta Acustica United Acustica92:903–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&author=ME+Nilsson&author=B+Berglund&journal=Acta+Acustica+United+Acustica&volume=92&pages=903-11&publication_year=2006&)\\n100. NowakDJ, CraneDE, StevensJC. 100.\\u20022006.  Air pollution removal by urban trees and shrubs in the United States. Urban For. Urban Green.4:115–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&author=DJ+Nowak&author=DE+Crane&author=JC+Stevens&journal=Urban+For.+Urban+Green.&volume=4&pages=115-23&publication_year=2006&)\\n101. OlmstedFL. 101.\\u20021970 (1870). Public Parks and the Enlargement of Towns New York: Arno (Cambridge, MA: Riverside)\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&author=FL+Olmsted&)\\n102. OrwellRL, WoodRA, BurchettMD, TarranJ, TorpyF. 102.\\u20022006.  The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. Water Air Soil Poll.177:59–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&author=RL+Orwell&author=RA+Wood&author=MD+Burchett&author=J+Tarran&author=F+Torpy&journal=Water+Air+Soil+Poll.&volume=177&pages=59-80&publication_year=2006&)\\n103. PaolettiE, BardelliT, GiovanniniG, PecchioliL. 103.\\u20022011.  Air quality impact of an urban park over time. Procedia Environ. Sci.4:10–16[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&author=E+Paoletti&author=T+Bardelli&author=G+Giovannini&author=L+Pecchioli&journal=Procedia+Environ.+Sci.&volume=4&pages=10-16&publication_year=2011&)\\n104. PowellKE, PaluchAE, BlairSN. 104.\\u20022011.  Physical activity for health: What Kind? How much? How Intense? On Top of What?. Annu. Rev. Public Health32:349–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&author=KE+Powell&author=AE+Paluch&author=SN+Blair&journal=Annu.+Rev.+Public+Health&volume=32&pages=349-65&publication_year=2011&)\\n105. PrettyJ, PeacockJ, SellensM, GriffinM. 105.\\u20022005.  The mental and physical health outcomes of green exercise. Int. J. Environ. Health Res.15:319–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&author=J+Pretty&author=J+Peacock&author=M+Sellens&author=M+Griffin&journal=Int.+J.+Environ.+Health+Res.&volume=15&pages=319-37&publication_year=2005&)\\n106. ProctorJD. 106.\\u20021998.  The social construction of nature: relativist accusations, pragmatist and critical realist responses. Ann. Assoc. Am. Geogr.88:352–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&author=JD+Proctor&journal=Ann.+Assoc.+Am.+Geogr.&volume=88&pages=352-76&publication_year=1998&)\\n107. RichardsonEA, MitchellR. 107.\\u20022010.  Gender differences in relationships between urban green space and health in the United Kingdom. Soc. Sci. Med.71:568–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&author=EA+Richardson&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=71&pages=568-75&publication_year=2010&)\\n108. RichardsonEA, MitchellR, HartigT, de VriesS, Astell-BurtT, FrumkinH. 108.\\u20022012.  Green cities and health: a question of scale?. J. Epidemiol. Community Health66:160–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&author=EA+Richardson&author=R+Mitchell&author=T+Hartig&author=S+de+Vries&author=T+Astell-Burt&author=H+Frumkin&journal=J.+Epidemiol.+Community+Health&volume=66&pages=160-65&publication_year=2012&)\\n109. RichardsonEA, PearceJ, MitchellR, KinghamS. 109.\\u20022013.  Role of physical activity in the relationship between urban green space and health. Public Health127:318–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&author=EA+Richardson&author=J+Pearce&author=R+Mitchell&author=S+Kingham&journal=Public+Health&volume=127&pages=318-24&publication_year=2013&)\\n110. RiosR, AikenLS, ZautraAJ. 110.\\u20022012.  Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. Ann. Behav. Med.43:50–61[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&author=R+Rios&author=LS+Aiken&author=AJ+Zautra&journal=Ann.+Behav.+Med.&volume=43&pages=50-61&publication_year=2012&)\\n111. RoseG. 111.\\u20022001.  Sick individuals and sick populations. Int. J. Epidemiol.30:427–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&author=G+Rose&journal=Int.+J.+Epidemiol.&volume=30&pages=427-32&publication_year=2001&)\\n112. SarteletKN, CouvidatF, SeigneurC, RoustanY. 112.\\u20022012.  Impact of biogenic emissions on air quality over Europe and North America. Atmos. Environ.53:131–41[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&author=KN+Sartelet&author=F+Couvidat&author=C+Seigneur&author=Y+Roustan&journal=Atmos.+Environ.&volume=53&pages=131-41&publication_year=2012&)\\n113. SetäläH, ViippolaV, RantalainenAL, PennanenA, Yli-PelkonenV. 113.\\u20022012.  Does urban vegetation mitigate air pollution in northern conditions?. Environ. Pollut.183:104–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&author=H+Set%C3%A4l%C3%A4&author=V+Viippola&author=AL+Rantalainen&author=A+Pennanen&author=V+Yli-Pelkonen&journal=Environ.+Pollut.&volume=183&pages=104-12&publication_year=2012&)\\n114. SimpsonJR, McPhersonEG. 114.\\u20021998.  Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. Atmos. Environ.32:69–74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&author=JR+Simpson&author=EG+McPherson&journal=Atmos.+Environ.&volume=32&pages=69-74&publication_year=1998&)\\n115. SmardonRC. 115.\\u20021988.  Perception and aesthetics of the urban environment: review of the role of vegetation. Landsc. Urban Plann.15:85–106[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&author=RC+Smardon&journal=Landsc.+Urban+Plann.&volume=15&pages=85-106&publication_year=1988&)\\n116. StaatsH, Van GemerdenE, HartigT. 116.\\u20022010.  Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. Leis. Sci.32:401–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&author=H+Staats&author=E+Van+Gemerden&author=T+Hartig&journal=Leis.+Sci.&volume=32&pages=401-17&publication_year=2010&)\\n117. StigsdotterUK, EkholmO, SchipperijnJ, ToftagerM, Kamper-JørgensenF, RandrupTB. 117.\\u20022010.  Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. Scand. J. Public Health38:411–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&author=UK+Stigsdotter&author=O+Ekholm&author=J+Schipperijn&author=M+Toftager&author=F+Kamper-J%C3%B8rgensen&author=TB+Randrup&journal=Scand.+J.+Public+Health&volume=38&pages=411-17&publication_year=2010&)\\n118. SugiyamaT, LeslieE, Giles-CortiB, OwenN. 118.\\u20022008.  Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. J. Epidemiol. Community Health62:e9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&author=T+Sugiyama&author=E+Leslie&author=B+Giles-Corti&author=N+Owen&journal=J.+Epidemiol.+Community+Health&volume=62&pages=e9&publication_year=2008&)\\n119. TakanoT, NakamuraK, WatanabeM. 119.\\u20022002.  Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. J. Epidemiol. Community Health56:913–18[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&author=T+Takano&author=K+Nakamura&author=M+Watanabe&journal=J.+Epidemiol.+Community+Health&volume=56&pages=913-18&publication_year=2002&)\\n120. TallisM, TaylorG, SinnettD, Freer-SmithP. 120.\\u20022011.  Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. Landsc. Urban Plann.103:129–38[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&author=M+Tallis&author=G+Taylor&author=D+Sinnett&author=P+Freer-Smith&journal=Landsc.+Urban+Plann.&volume=103&pages=129-38&publication_year=2011&)\\n121. TaylorAF, KuoFE. 121.\\u20022009.  Children with attention deficits concentrate better after walk in the park. J. Atten. Disord.12:402–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&author=AF+Taylor&author=FE+Kuo&journal=J.+Atten.+Disord.&volume=12&pages=402-9&publication_year=2009&)\\n122. TaylorAF, KuoFE, SullivanWC. 122.\\u20022002.  Views of nature and self-discipline: evidence from inner city children. J. Environ. Psychol.22:49–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&author=AF+Taylor&author=FE+Kuo&author=WC+Sullivan&journal=J.+Environ.+Psychol.&volume=22&pages=49-63&publication_year=2002&)\\n123. Thompson CoonJ, BoddyK, SteinK, WhearR, BartonJ, DepledgeMH. 123.\\u20022011.  Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. Environ. Sci. Technol.45:1761–72[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&author=J+Thompson+Coon&author=K+Boddy&author=K+Stein&author=R+Whear&author=J+Barton&author=MH+Depledge&journal=Environ.+Sci.+Technol.&volume=45&pages=1761-72&publication_year=2011&)\\n124. TsunetsuguY, ParkB, MiyazakiY. 124.\\u20022010.  Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. Environ. Health Prevent. Med.15:27–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&author=Y+Tsunetsugu&author=B+Park&author=Y+Miyazaki&journal=Environ.+Health+Prevent.+Med.&volume=15&pages=27-37&publication_year=2010&)\\n125. UlrichRS. 125.\\u20021979.  Visual landscapes and psychological well-being. Landsc. Res.4:17–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&author=RS+Ulrich&journal=Landsc.+Res.&volume=4&pages=17-23&publication_year=1979&)\\n126. UlrichRS. 126.\\u20021983.  Aesthetic and affective response to natural environment. Human Behaviour and Environment: Advances in Theory and Research. Volume\\n     6Behaviour and the Natural Environment, ed. I\\n     Altman, JF Wohlwill 85–125 New York: Plenum\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&author=RS+Ulrich&journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&pages=85-125&publication_year=1983&)\\n127. UlrichRS, SimonsRF, LositoBD, FioritoE, MilesMA, ZelsonM. 127.\\u20021991.  Stress recovery during exposure to natural and urban environments. J. Environ. Psychol.11:201–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&author=RS+Ulrich&author=RF+Simons&author=BD+Losito&author=E+Fiorito&author=MA+Miles&author=M+Zelson&journal=J.+Environ.+Psychol.&volume=11&pages=201-30&publication_year=1991&)\\n128. Van CauwenbergJ, De BourdeaudhuijI, De MeesterF, Van DyckD, SalmonJ. 128.\\u2002 et al.2011.  Relationship between the physical environment and physical activity in older adults: a systematic review. Health Place17:458–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&author=J+Van+Cauwenberg&author=I+De+Bourdeaudhuij&author=F+De+Meester&author=D+Van+Dyck&author=J+Salmon&journal=Health+Place&volume=17&pages=458-69&publication_year=2011&)\\n129. Van den BergAE, CustersMHG. 129.\\u20022011.  Gardening promotes neuroendocrine and affective restoration from stress. J. Health Psychol.16:3–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&author=AE+Van+den+Berg&author=MHG+Custers&journal=J.+Health+Psychol.&volume=16&pages=3-11&publication_year=2011&)\\n130. Van den BergAE, MaasJ, VerheijRA, GroenewegenPP. 130.\\u20022010.  Green space as a buffer between stressful life events and health. Soc. Sci. Med.70:1203–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&author=AE+Van+den+Berg&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&journal=Soc.+Sci.+Med.&volume=70&pages=1203-10&publication_year=2010&)\\n131. Van den BergAE, van Winsum-WestraM, de VriesS, van DillenSME. 131.\\u20022010.  Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. Environ. Health9:74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&author=AE+Van+den+Berg&author=M+van+Winsum-Westra&author=S+de+Vries&author=SME+van+Dillen&journal=Environ.+Health&volume=9&pages=74&publication_year=2010&)\\n132. Van HerzeleA, BellS, HartigT, PodestaMTC, van ZonR. 132.\\u20022011.  Health benefits of nature experience: the challenge of linking practice and research.  See Ref. 98 169–82\\n133. Ward ThompsonC, AspinallP, MontarzinoA. 133.\\u20022008.  The childhood factor: adult visits to green places and the significance of childhood experience. Environ. Behav.40:111–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&author=C+Ward+Thompson&author=P+Aspinall&author=A+Montarzino&journal=Environ.+Behav.&volume=40&pages=111-43&publication_year=2008&)\\n134. Ward ThompsonC, RoeJ, AspinallP, MitchellR, ClowA, MillerD. 134.\\u20022012.  More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. Landsc. Urban Plann.105:221–29[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&author=C+Ward+Thompson&author=J+Roe&author=P+Aspinall&author=R+Mitchell&author=A+Clow&author=D+Miller&journal=Landsc.+Urban+Plann.&volume=105&pages=221-29&publication_year=2012&)\\n135. WellsNM, EvansGW. 135.\\u20022003.  Nearby nature—a buffer of life stress among rural children. Environ. Behav.35:311–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&author=NM+Wells&author=GW+Evans&journal=Environ.+Behav.&volume=35&pages=311-30&publication_year=2003&)\\n136. WellsNM, LekiesKS. 136.\\u20022006.  Nature and the life course: pathways from childhood nature experiences to adult environmentalism. Child. Youth Environ.16:1–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&author=NM+Wells&author=KS+Lekies&journal=Child.+Youth+Environ.&volume=16&pages=1-24&publication_year=2006&)\\n137. WhitelawS. 137.\\u20022012.  The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. Crit. Public Health22:427–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&author=S+Whitelaw&journal=Crit.+Public+Health&volume=22&pages=427-40&publication_year=2012&)\\n138. 138.\\u2002WHO (World Health Organ.)1946. Preamble to the Constitution of the World Health Organization as adopted by the International Health Conference.  New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&publication_year=1946&)\\n139. WilsonSJ, LipseyMW. 139.\\u20022000.  Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. Eval. Program Plann.23:1–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&author=SJ+Wilson&author=MW+Lipsey&journal=Eval.+Program+Plann.&volume=23&pages=1-12&publication_year=2000&)\\n140. YooMH, KwonYJ, SonKC, KaysSJ. 140.\\u20022006.  Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. J. Am. Soc. Hort. Sci.131:452–58[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&author=MH+Yoo&author=YJ+Kwon&author=KC+Son&author=SJ+Kays&journal=J.+Am.+Soc.+Hort.+Sci.&volume=131&pages=452-58&publication_year=2006&)\\n141. ZickCD, SmithKR, Kowaleski-JonesL, UnoC, MerrillBJ. 141.\\u20022013.  Harvesting more than vegetables: the potential weight control benefits of community gardening. Am. J. Public Health103:e1–6[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&author=CD+Zick&author=KR+Smith&author=L+Kowaleski-Jones&author=C+Uno&author=BJ+Merrill&journal=Am.+J.+Public+Health&volume=103&pages=e1-6&publication_year=2013&)\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n![Loading](https://www.annualreviews.org/images/jp/spinner.gif)\\n\\nNature and Health\\n\\nAnnual Review of Public Health 35, 207 (2014); [https://doi.org/10.1146/annurev-publhealth-032013-182443](https://doi.org/10.1146/annurev-publhealth-032013-182443 \"undefined - opens in new window/tab\")\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n![Loading](https://www.annualreviews.org/images/jp/spinner.gif)\\n\\nData & Media loading...\\n\\n#### Supplementary Data\\n\\n- Download [**Supplemental References**](https://www.annualreviews.org/deliver/fulltext/publhealth/35/1/pu35_hartig_supmat.pdf?itemId=/content/suppdata/10.1146/annurev-publhealth-032013-182443/1) (PDF)\\n\\n**Audio:** Terry Hartig, Richard Mitchell, Sjerp de Vries, and Howard Frumkin discuss the current state of research on the impact that contact with nature has on individual and population health.\\n\\n\\n\\nSoundCloud Widget\\n\\n\\n### Most Read This Month\\n\\nArticle\\n\\n- - ### [Social Connection as a Public Health Issue: The Evidence and a Systemic Framework for Prioritizing the “Social” in Social Determinants of Health](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052020-110732)\\n\\n\\n\\n\\n\\n    Julianne Holt-Lunstad\\n\\n\\n\\n\\n\\n    pp.193–213\\n    (21)\\n\\n\\n- - ### [Understanding and Responding to Health Literacy as a Social Determinant of Health](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102529)\\n\\n\\n\\n\\n\\n    Don Nutbeam\\xa0and\\n    Jane E. 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href=\"https://www.annualreviews.org/content/journals/publhealth\" class=\"item-meta-data__journal-title-link\">\\nAnnual Review of Public Health\\n</a>\\n</h3>\\n<a href=\"https://www.annualreviews.org/content/journals/publhealth/35/1\" title=\"\" class=\"item-meta-data__issue-title-link\">\\n<h4 class=\"item-meta-data__journal-issue\" title=\"Volume 35, Issue 1\">Volume 35, 2014</h4>\\n</a>\\n</div>\\n<div class=\"hidden-xs article-access-icon-and-access item-meta-data__accreditation\">\\n<h4 class=\"article-type item-meta-data__type\">Review Article</h4>\\n<h4 class=\"article-access item-meta-data__oa\"> \\n<span class=\"accesstext\">Free</span>\\n</h4>\\n</div>\\n<h1 class=\"item-meta-data__item-title\">\\nNature and Health\\n</h1>\\n<ul class=\"list-unstyled article-meta-data item-meta-data__article\"> \\n<li class=\"data-author article-meta-data__item item-meta-data__author\">\\n<span class=\"meta-value authors\"><a href=\"https://www.annualreviews.org/search?value1=Terry+Hartig&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Terry Hartig</a><sup>1</sup>, <a href=\"https://www.annualreviews.org/search?value1=Richard+Mitchell&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Richard Mitchell</a><sup>2</sup>, <a href=\"https://www.annualreviews.org/search?value1=Sjerp+de+Vries&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Sjerp de Vries</a><sup>3</sup>&nbsp;and <a href=\"https://www.annualreviews.org/search?value1=Howard+Frumkin&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Howard Frumkin</a><sup>4</sup></span>\\n</li>\\n<li class=\"data-author article-meta-data__item item-meta-data__author-affiliations\">\\n<div class=\"showhide spacing\">\\n<a id=\"showHideAffiliation\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" role=\"button\" class=\"std-display viewHideAffiliation js-showhide\" aria-expanded=\"false\" aria-controls=\"showHideAffiliationContent\">\\n<span class=\"js-plus\">\\n<i class=\"fa fa-plus-circle\"></i>\\n<span class=\"underline\">\\nView Affiliations\\n</span>\\n</span>\\n<span class=\"js-minus minus\">\\n<i class=\"fa fa-minus-circle\"></i>\\n<span class=\"underline\">\\nHide Affiliations\\n</span>\\n</span>\\n</a>\\n<div id=\"showHideAffiliationContent\" class=\"js-description minus\">\\n<div class=\"affiliation-details\">\\n<!-- -->\\n<span class=\"meta-value affiliations\">\\n<sup>1</sup>Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: <a href=\"mailto:terry.hartig@ibf.uu.se\">terry.hartig@ibf.uu.se</a>\\n</span>\\n<!-- , -->\\n<span class=\"meta-value affiliations\">\\n<sup>2</sup>Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: <a href=\"mailto:Richard.Mitchell@glasgow.ac.uk\">Richard.Mitchell@glasgow.ac.uk</a>\\n</span>\\n<!-- , -->\\n<span class=\"meta-value affiliations\">\\n<sup>3</sup>Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: <a href=\"mailto:sjerp.devries@wur.nl\">sjerp.devries@wur.nl</a>\\n</span>\\n<!-- and -->\\n<span class=\"meta-value affiliations\">\\n<sup>4</sup>School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: <a href=\"mailto:frumkin@uw.edu\">frumkin@uw.edu</a>\\n</span>\\n</div>\\n<div class=\"institutionLinks\">\\n<div class=\"instList\">\\n</div>\\n</div>\\n</div>\\n</div>\\n</li>\\n<li class=\"article-meta-data__item item-meta-data__date-and-doi\">\\n<span class=\"meta-container\">\\nVol. 35:207-228\\n(Volume publication date March 2014)\\n</span>\\n<a href=\"https://doi.org/10.1146/annurev-publhealth-032013-182443\" class=\"externallink meta-container meta-container__value item-meta-data__doi meta-container--doi hidden-xs\">https://doi.org/10.1146/annurev-publhealth-032013-182443</a>\\n</li>\\n<li>\\nFirst published as a Review in Advance on \\nJanuary 02, 2014\\n</li> \\n<li>\\n<div class=\"copyright-info\" dir=\"auto\">\\n© Annual Reviews\\n</div>\\n</li>\\n</ul>\\n</div>\\n</div>\\n \\n\\n<section id=\"tabbedpages\" class=\"tabs icon-image-content\">\\n<div id=\"abstract_content\" class=\" tab-pane abstract tabbedsection\">\\n<div class=\"articleabstract\">\\n<h3 dir=\"auto\">Abstract</h3>\\n<div dir=\"auto\">\\n<div class=\"description\"><p>Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [<a href=\"http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001\" target=\"xrefwindow\">Erratum</a>]</p></div>\\n</div>\\n</div>\\n<ul class=\"list-inline border-right-list article-dates\">\\n</ul> \\n<div class=\"bottom-side-nav\">\\n<span>\\n<strong dir=\"auto\">\\nKeyword(s):\\n</strong>\\n</span>\\n<a href=\"https://www.annualreviews.org/search?value1=%22community+gardens%22&amp;option1=pub_keyword\" title=\"community gardens\">community gardens</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22green+infrastructure%22&amp;option1=pub_keyword\" title=\"green infrastructure\">green infrastructure</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22green+space%22&amp;option1=pub_keyword\" title=\"green space\">green space</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22greenspace%22&amp;option1=pub_keyword\" title=\"greenspace\">greenspace</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22landscape%22&amp;option1=pub_keyword\" title=\"landscape\">landscape</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22parks%22&amp;option1=pub_keyword\" title=\"parks\">parks</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22urban+forests%22&amp;option1=pub_keyword\" title=\"urban forests\">urban forests</a>\\n</div>\\n<div class=\"metaDataBlock\">\\n<div class=\"metaDataBlock__Item\">\\n<h3 class=\"metaDataBlock__title h5\">\\nAssociated Article\\n</h3>\\n<div class=\"consanguinityBlurbContainer\">\\nThere are media items related to this article:\\n</div>\\n<a href=\"https://www.annualreviews.org/content/multimedia/10.1146/do.multimedia.2014.05.13.269\">Nature and Health</a>\\n</div>\\n<div class=\"metaDataBlock__Item\">\\n<h3 class=\"metaDataBlock__title h5\">\\nErratum\\n</h3>\\n<div class=\"consanguinityBlurbContainer\">\\nAn erratum has been published for this article:\\n</div>\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-pu-35-102115-200001\">Nature and Health</a>\\n</div>\\n</div>\\n</div>\\n<div id=\"metrics_content\" class=\"tab-pane metrics hidden-js-div tabbedsection\">\\n<div class=\"itemMetricsLoading\">\\n<img src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<p>Article metrics loading...</p>\\n</div>\\n<div class=\"metricsContainer retrieveMetrics\">\\n<div class=\"hiddenjsdiv metricsItemId\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"hiddenjsdiv metricsPubDate\">2014-03-18</div>\\n<div class=\"hiddenjsdiv metricsEndDate\">2025-07-29</div>\\n<div class=\"hiddenjsdiv\" id=\"graph1Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"hiddenjsdiv\" id=\"graph2Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"hiddenjsdiv \" id=\"graph3Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"metricsDetails\">\\n</div>\\n</div>\\n</div>\\n<div id=\"html_fulltext\" class=\"htmlfulltext hidden-js-div tabbedsection tab-pane active\">\\n<form name=\"pptForm\" class=\"hidden pptForm\" id=\"pptDwnld\" action=\"https://www.annualreviews.org/contentexport/powerpoint/powerpoint.action\" method=\"POST\">\\n\\n\\n\\n\\n\\n\\n\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"pptDownload\">Download as PowerPoint</a>\\n</form>\\n\\n<span class=\"showPPT\" data-showppt=\"true\"></span>\\n<div id=\"itemFullTextId\" class=\"itemFullTextHtml\" data-fulltexturl=\"/deliver/fulltext/publhealth/35/1/annurev-publhealth-032013-182443.html?itemId=/content/journals/10.1146/annurev-publhealth-032013-182443&amp;mimeType=html&amp;fmt=ahah\" data-fulltextunavailablemsg=\"<span dir=&quot;auto&quot;>The full text of this item is not currently available.</span>\" data-fulltextexpandlinktext=\"Toggle display:\" data-hideinlinetablesbydefault=\"false\" data-showreferenceoverlaypopup=\"true\"><!--?xml version=\"1.0\" encoding=\"UTF-8\"?--><div xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" id=\"html-body\">\\n\\n<div id=\"article-level-0-front-and-body\" class=\"article-level-0-front-and-body\">\\n<ul xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"flat fm article-header-metadata\"><li></li><li>ISSN: <span class=\"issn\">0163-7525</span>, Online ISSN: <span class=\"oissn\">1545-2093</span></li><li>DOI: <span class=\"doi\">http://dx.doi.org/10.1146/annurev-publhealth-032013-182443</span></li><li>Volume <span class=\"volume\">35</span>, Issue <span class=\"issue\">1</span>, pages <span class=\"first-page\">207</span>-<span class=\"last-page\">228</span></li><li><span class=\"copyright\">Copyright © 2014 by Annual Reviews. All rights reserved</span>&nbsp;</li></ul><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection article-title-and-authors\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"top-1\" id=\"top-1\">\\n                                &nbsp;\\n                            </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><h1><span class=\"article-title\">Nature and Health</span></h1><ul class=\"flat authors\">Terry Hartig<span class=\"au-label\">\\n                  1\\n               </span>; Richard Mitchell<span class=\"au-label\">\\n                  2\\n               </span>; Sjerp de Vries<span class=\"au-label\">\\n                  3\\n               </span>; Howard Frumkin<span class=\"au-label\">\\n                  4\\n               </span></ul><ul class=\"flat affiliations\">\\n               <sup xmlns:f=\"http://www.example.org/functions\">1</sup>Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: <a href=\"mailto:terry.hartig@ibf.uu.se\">terry.hartig@ibf.uu.se</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">2</sup>Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: <a href=\"mailto:Richard.Mitchell@glasgow.ac.uk\">Richard.Mitchell@glasgow.ac.uk</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">3</sup>Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: <a href=\"mailto:sjerp.devries@wur.nl\">sjerp.devries@wur.nl</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">4</sup>School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: <a href=\"mailto:frumkin@uw.edu\">frumkin@uw.edu</a>\\n            </ul><div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection article-abstract\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"abstract-1\" id=\"abstract-1\">ABSTRACT</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><p>Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [<a target=\"xrefwindow\" href=\"http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001\">Erratum</a>]</p>\\n<span class=\"tl-lowest-section\">Keywords</span><ul class=\"flat keywords\"><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22greenspace%22\">greenspace</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22green%20space%22\">green space</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22green%20infrastructure%22\">green infrastructure</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22landscape%22\">landscape</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22parks%22\">parks</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22urban%20forests%22\">urban forests</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22community%20gardens%22\">community gardens</a></li></ul><div class=\"clearer\">&nbsp;</div></div>\\n\\n\\n\\n\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"introduction-1\" id=\"introduction-1\">INTRODUCTION</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>The public health field views the natural environment with ambivalence. Infectious agents, extreme weather, and geological events regularly sicken, injure, and kill people, often en masse. Yet, people cannot remain healthy without clean air, clean water, food, and other resources provided as “ecosystem services.” Enormous amounts of research inform these contrasting perspectives, describing how the natural environment harms humans, how health depends on the natural environment, and how human impacts on the natural environment rebound on health.</p>\\n\\n         <p>A theme that has become increasingly distinct over recent years concerns the natural environment, or “nature,” perceived, valued, and engaged with as such, particularly in urbanized societies. This research focuses primarily on benefits of contact with nature. Key segments of this literature are young, but central ideas, such as the link between vegetation and air quality, have ancient provenance in the public health field (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B82\" data-original-title=\"\" title=\"\">82</a></span>). Interventions prompted by those ideas, such as urban parks, have long remained in place, presumably because the public has enjoyed them and believed in their salutary value. The recent research tests such beliefs, and it encourages more nuanced theoretical and practical consideration of nature-health relations.</p>\\n\\n         <p>In this article, we review work done in recent decades to better characterize the health benefits of contact with nature. We do not cover this body of work comprehensively, but instead we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations. We touch on clinically oriented work on contact with nature in therapeutic contexts, but we do not discuss benefits of companion animals, which may be taken as representations of nature (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42\" data-original-title=\"\" title=\"\">42</a></span>; however, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B6\" data-original-title=\"\" title=\"\">6</a></span>). Although the core ideas we discuss have a durable legacy in public health practice, the topic has not previously been the focus of an <span class=\"jp-italic\">Annual Review of Public Health</span> article (however, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B44\" data-original-title=\"\" title=\"\">44</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B80\" data-original-title=\"\" title=\"\">80</a></span>).</p>\\n\\n         <p>Below, we examine the concept of nature, consider reasons for the current expansion of research, and provide a “review of reviews.” We then review research on pathways involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"definingnature-1\" id=\"definingnature-1\">DEFINING “NATURE”</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>In an objective sense, “nature” as used here refers to physical features and processes of nonhuman origin that people ordinarily can perceive, including the “living nature” of flora and fauna, together with still and running water, qualities of air and weather, and the landscapes that comprise these and show the influence of geological processes. As such, “nature” overlaps substantially with “natural environment,” an environment with little or no apparent evidence of human presence or intervention, and the two terms have been used interchangeably.</p>\\n\\n         <p>In practice, however, much research does not accept exclusion of the artificial as a basis for defining nature or natural environment. The nature of interest is often situated in built environments, as with indoor plants and street trees. Similarly, allotment (or community) gardens and urban parks comprise natural features, appear natural, and provide opportunities to engage with and follow natural processes, but they are typically designed, constructed, regulated, and maintained. Research has also acknowledged that a person may experience nature as such when viewing natural elements or landscapes from a building or vehicle, in photographs and films, or in virtual reality setups.</p>\\n\\n         <p>The term “urban nature” is instructive. It admits the presence of nature even in those human environments that some consider the antithesis of the natural. Yet, just as it puts the urban and natural together, it also sets them apart. It exemplifies how contacts with nature in an urbanized society occur within a frame of reference shaped in an everyday life oriented in various ways to the society\\'s urban circumstances.</p>\\n\\n         <p>The term “<span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">nature experience</a></span>” is used in some segments of this research to emphasize the subjective perception and evaluation of relevant environmental features (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67\" data-original-title=\"\" title=\"\">67</a></span>). It is, however, not a purely individual subjectivity, nor is it fixed. An individual\\'s experience of nature occurs within and carries further the long-running exchange between the society and its environment (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B48\" data-original-title=\"\" title=\"\">48</a></span>).</p>\\n\\n         <p>In sum, although nature has a wide variety of objective referents, it is also experienced subjectively and is effective as a social construction (for further discussion, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B106\" data-original-title=\"\" title=\"\">106</a></span>). Accordingly, researchers represent nature with diverse physical and spatial variables, encountered in diverse activity contexts. Some also apply measurement, analysis, and design strategies to tap into the subjective experience of the environment. Because opportunities for contact with nature, ways of encountering nature, and experiences of nature vary across sociocultural contexts, researchers have examined variation in outcomes not only among individuals within given populations, but also across populations (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108\" data-original-title=\"\" title=\"\">108</a></span>).</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"somereasonsforthecurrentresearchexpansion-1\" id=\"somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Growth in this field of research is shown clearly by the increase in publications. For example, a search in the Web of Knowledge on just one term, “greenspace and health,” yielded 2 hits for 1990–1999, 34 for 2000–2009, and 45 from 2010 to June 2013.</p>\\n\\n         <p>Why is this expansion occurring? Motives for involvement in the field vary. Some work reflects concerns that urbanization, environmental degradation, and lifestyle changes are quantitatively and qualitatively diminishing possibilities for human contact with nature. For example, dense urban settings, if poorly designed (without accessible green space), may reduce opportunities for stress-reducing nature contact as well as increase exposure to environmental stressors (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B53\" data-original-title=\"\" title=\"\">53</a></span>). Other work considers nature as just one aspect of the physical environment that is potentially beneficial for health. For example, epidemic obesity in some countries has focused attention on sedentary lifestyles and environmental supports for physical activity, including but not limited to nearby parks (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B24\" data-original-title=\"\" title=\"\">24</a></span>). In general, the research aims to inform practical measures that directly or indirectly involve access to nature, including provisions for housing, transportation, and recreation.</p>\\n\\n         <p>Change in thinking about health has also enabled expansion of the research field. With the epidemiologic transition to chronic, lifestyle-related diseases as the major causes of mortality, biopsychosocial explanation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B33\" data-original-title=\"\" title=\"\">33</a></span>) came to compete with the biomedical model, and constructs such as “psychological stress” and “social support” came into widespread use. This development has suited a field populated mainly by people trained in disciplines (e.g., human geography, environmental psychology, social epidemiology) and professions (e.g., outdoor recreation management, landscape architecture, urban forestry) that take interest in how people perceive, interpret, evaluate, and act on the environment. The conception of health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity” (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B138\" data-original-title=\"\" title=\"\">138</a></span>, p. 100) has also been influential for its heuristic value and as a basis for action. By acknowledging the positive, multidimensional character and subjective aspects of health, this concept supports the involvement of a wide variety of actors in efforts to understand and support health, including but not limited to those trained to treat symptoms of ill-health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B132\" data-original-title=\"\" title=\"\">132</a></span>). Research in the field accordingly represents health in many ways, not only with regard to forms of morbidity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86\" data-original-title=\"\" title=\"\">86</a></span>), causes of mortality (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>), and longevity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B119\" data-original-title=\"\" title=\"\">119</a></span>) but also with regard to self-reported health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>) and diverse intermediate outcomes involving different pathways, such as beneficial change in emotional and physiological markers of stress measured during visits to natural areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B3\" data-original-title=\"\" title=\"\">3</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n         <p>Methodological and conceptual advances are also feeding the expansion of the field; old and new topics are being studied with a range of new tools. For example, beliefs about stress-reducing effects of park visits are widespread and long-standing (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B101\" data-original-title=\"\" title=\"\">101</a></span>), but experimental testing of such effects is a relatively recent activity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B52\" data-original-title=\"\" title=\"\">52</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B125\" data-original-title=\"\" title=\"\">125</a></span>). These small-scale experimental demonstrations of pathway plausibility informed the first large-scale epidemiologic studies to assess associations between contact with nature and health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87\" data-original-title=\"\" title=\"\">87</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B93\" data-original-title=\"\" title=\"\">93</a></span>). Those studies used resources and techniques that only recently became available. For example, they used land-use data extracted from satellite images with digital technologies to describe the spatial extent of different kinds of nature accessible to the given individuals and groups in their residential contexts.</p>\\n\\n         <p>Having considered some of the developments in societies, sciences, and professions that have motivated and enabled the recent expansion of this field, we turn now to examine the research in more detail, starting with previous efforts to review the literature.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"reviewofreviews-1\" id=\"reviewofreviews-1\">REVIEW OF REVIEWS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Many review articles on nature and human health have been published in recent years. Assessing them is one means of summarizing the state of the field in terms of what is known and the quality of the research. In April 2013, we undertook a systematic search for reviews. We used Medline and all Web of Knowledge databases to identify peer-reviewed papers, sought nonindexed, non-peer-reviewed (gray) literature, and online reviews via Internet searches, and examined citation lists of already identified reviews. We included review articles or reports relevant to relationships between nature and human health and well-being. Inevitably, because the topic boundaries of nature and health are fuzzy, relevance was sometimes difficult to establish. For example, reviews on environmental correlates of physical activity often include access to urban parks or trails among many other environmental characteristics, but they may not focus on natural environments. We identified 59 relevant reviews at the time of the search (see <a target=\"xrefwindow\" href=\"http://www.annualreviews.org/doi/suppl/10.1146/annurev-publhealth-032013-182443\">\\n               <span class=\"jp-bold\">Supplemental Material</span>\\n            </a>). Of the peer-reviewed articles, most appeared in journals concerned with public health or environmental planning.</p>\\n\\n         <p>The reviews varied considerably in methodology and guiding aims. We observed three broad search-and-synthesis approaches: (<span class=\"jp-italic\">a</span>) narrative reviews, not clearly based on a systematic literature search (<span class=\"jp-italic\">n</span> = 24); (<span class=\"jp-italic\">b</span>) narrative reviews based on a systematic literature search or comprehensive case identification (<span class=\"jp-italic\">n</span> = 13); and (<span class=\"jp-italic\">c</span>) full systematic reviews based on an exhaustive literature search (<span class=\"jp-italic\">n</span> = 22). The reviews tended to have one of four general aims. First, systematic reviews sought to collate and synthesize all evidence for the effects of specified contacts with nature on specified markers of health (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2\" data-original-title=\"\" title=\"\">2</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123\" data-original-title=\"\" title=\"\">123</a></span>). Second, summary reviews often aimed to introduce the field, explain its concepts and the mechanisms by which natural environments might affect health, and then set out some evidence for effects (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54\" data-original-title=\"\" title=\"\">54</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B89\" data-original-title=\"\" title=\"\">89</a></span>). Some were published as gray literature and had been commissioned by governmental or nongovernmental agencies. A third group included what might be labeled “flag-waving” reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42\" data-original-title=\"\" title=\"\">42</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B95\" data-original-title=\"\" title=\"\">95</a></span>). These were aimed at introducing the topic to a new audience and were often relatively brief. Fourth, and fewer in number, were conceptual reviews, methodological reviews, or those proposing new theoretical perspectives (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B8\" data-original-title=\"\" title=\"\">8</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B79\" data-original-title=\"\" title=\"\">79</a></span>).</p>\\n\\n         <p>Reviews also varied by the environments and/or pathways to health discussed. Physical activity had the most dedicated coverage as the focus of 18 reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B65\" data-original-title=\"\" title=\"\">65</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90\" data-original-title=\"\" title=\"\">90</a></span>). Mitigation of poor air quality/urban heat problems and physiologically/psychologically restorative effects also had dedicated reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B12\" data-original-title=\"\" title=\"\">12</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B15\" data-original-title=\"\" title=\"\">15</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19\" data-original-title=\"\" title=\"\">19</a></span>). Twenty-six of the reviews addressed multiple mechanisms. The reviews covered a wide range of natural features and environmental categories, including indoor plants (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B16\" data-original-title=\"\" title=\"\">16</a></span>), urban parks (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90\" data-original-title=\"\" title=\"\">90</a></span>), and forests (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B22\" data-original-title=\"\" title=\"\">22</a></span>), but coverage was uneven. Urban parks were the most commonly considered setting. Two categories of environments were conspicuously underrepresented or absent; rural areas had just one review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B41\" data-original-title=\"\" title=\"\">41</a></span>), and there were no review articles about gardens or allotments or community gardens other than those used for therapeutic purposes. Also, very few reviews focused on population subgroups. Children were the most commonly considered subgroup (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B91\" data-original-title=\"\" title=\"\">91</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B96\" data-original-title=\"\" title=\"\">96</a></span>). We found no reviews dedicated to differences in relationships between nature and health by gender, ethnicity, or socioeconomic position.</p>\\n\\n         <p>Given this variety in method, aims, and focus, we find it interesting that there was strong agreement about the methodological state of the art. Reviews commonly concluded that the field remains dominated by observational study designs. Reviews agreed that too few primary studies have been carried out in a consistent and rigorous way to establish the causality of relationships between contact with nature and health. They agreed, too, that few primary studies have explored how effects may vary by population subgroup, by type of natural environment, or by type of contact with nature. Many reviews commented that consistent and objective measurement of both exposure to nature and health-related outcomes remains elusive.</p>\\n\\n         <p>We identified three weaknesses in the reviews with specific relevance to this field. First, search strategies did not always address the variety of environments or settings that count as “natural.” It is necessary to enter multiple terms into the literature search to avoid missing important work. For example, urban parks may be described by one or more of park, green space, greenspace, green areas, open space, recreational space, natural space, natural environment, etc. Building a review of relevant literature on a search for “green space” or “park” alone, for example, is inadequate.</p>\\n\\n         <p>Second, reviews from individual-based disciplines such as psychology tended to ignore evidence from population-based disciplines such as epidemiology, and vice versa. A great strength of this field is that evidence exists to describe benefits of contact with nature at multiple levels, from laboratory experiments tracking individuals\\' physiological reactions to viewing natural scenes through to studies of differences in population mortality rates between more and less green cities. Each level and scale of study provides important components in understanding what contact with nature can and cannot do for human health.</p>\\n\\n         <p>Third, the variety of health outcomes used in primary studies was not well addressed. When reviews try to synthesize results from outcome measures that are sensitive to contact with nature in different ways, and for different durations, messages become clouded. The pooling of results from heterogeneous outcome measures may be motivated by a lack of multiple studies using consistent measures and study designs. However, failure to appreciate differences among outcome measures leads to mischaracterization of the evidence base. Heterogeneity in outcome measures used in primary studies perhaps explains the relatively small number of reviews that attempted a pooled analysis. The body of reviews consequently tells us little about effect size.</p>\\n\\n         <p>Overall, the reviews generally agreed that beneficial effects from contact with nature do occur and that these effects are plausibly connected to the mechanisms proposed in guiding theory. However, most of the evidence covered by the reviews related to intermediate health-related outcomes such as amount of physical activity, amount of social contacts, changes in physiological activity (e.g., cardiovascular, neuroendocrine, and musculoskeletal changes characteristic of stress reduction), changes in emotional states (e.g., increased happiness, decreased anger), and changes in cognitive capability (e.g., performance on standardized tests of executive attention) rather than to disease states or measures of mortality. The reviews found less evidence that traced full pathways from contact with nature, to measures reflecting the operation of the given mechanism(s), and on to longer-term outcomes. Thus, it is unsurprising that the reviews generally suggest that the evidence is not yet good enough to say when, where, and for whom given effects will occur or how large or long-lasting they will be.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"pathwaysthroughwhichcontactwithnaturerelatestohealth-1\" id=\"pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Contact with nature may affect health via multiple pathways. Pathways that have received relatively large amounts of research attention involve air quality, physical activity, social cohesion, and stress reduction. We describe each of these pathways and indicate some of the complexities involved in drawing conclusions about its role, including variation in association across people, activities, and characteristics of the nature under study. The pathways emphasize different aspects of nature, as physical environment, as setting for (individual and social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously and affect one another, a point to which we return at the end of this section. The different pathways and possibilities for effect modification by individual or contextual variables are illustrated in <span xmlns:f=\"http://www.example.org/functions\" class=\"xref\"><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1\" data-original-title=\"\" title=\"\">\\n               <span class=\"jp-bold\">Figure 1</span>\\n            </a></span>.\\n</p><p xmlns:f=\"http://www.example.org/functions\"></p><div class=\"figure html-fulltext-responsive-figure\" id=\"f1\"><div class=\"caption\"><span class=\"captionLabel\"><span class=\"label\">\\n                  <span class=\"jp-bold\">Figure 1</span>\\u2002\\n               </span></span><span class=\"captionText\"><span>Some pathways through which the natural environment can affect the health of broad segments of populations. Four of the pathways go through contact with nature, whereas two others go directly from the natural environment to air quality and stress, respectively, implying that the natural environment may affect health without an individual or group consciously engaging with nature as such. Associations between variables at the different steps in a given pathway are subject to modification by characteristics of the people or the context. The two-headed arrow between the natural environment and contact with nature acknowledges that these are joined in a reciprocal relationship. The two-headed arrows between the variables designating pathways (air quality, physical activity, social contacts, and stress) also speak to their reciprocal relatedness; however, each may be related with all the others and not only with the one adjacent. Abbreviations: CHD, coronary heart disease; CVD, cardiovascular disease.</span>\\n</span></div><div class=\"image\"><a class=\"media-link\" href=\"https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.gif\" id=\"/content/figure/10.1146/annurev-publhealth-032013-182443.f1\" data-fancybox=\"gallery1\"><img src=\"https://www.annualreviews.org/docserver/ahah/fulltext/publhealth/35/1/pu350207.f1_thmb.gif\" border=\"0\" alt=\"\\n                  Figure 1\\u2002\\n               \"><p style=\"margin-bottom:0;\"><span class=\"figure-duplicate-label\">\\n                  Figure 1\\u2002\\n               <br><br></span>Click to view</p></a><a href=\"https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.ppt?mimeType=application/vnd.ms-powerpoint\">\\n                                        Download as PowerPoint\\n                                </a></div><div class=\"clearer\">&nbsp;</div></div><p></p>\\n         <p></p>\\n<!--splitRids is f1--><!--currentRid is f1--><!--current position is 51--><!--check position is 51-->\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Air Quality</span>\\n\\n            <p>Trees, shrubs, and other vegetation may affect ambient air quality and, through it, human health and well-being. There are both positive and negative impacts. Trees and other vegetation may reduce levels of some pollutants, including gases and particulate matter (PM), but they may also contribute to air pollution by releasing hydrocarbons. Some trees and plants release pollen, aggravating allergies. Finally, trees improve air quality indirectly when they cool urban environments and reduce building energy demand.</p>\\n\\n            <p>Trees and other vegetation can reduce levels of gaseous air pollutants [e.g., ozone, oxides of nitrogen (NOx), oxides of sulfur] and PM (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B37\" data-original-title=\"\" title=\"\">37</a></span>). For gases, the primary mechanisms of action are uptake by leaf stomata, absorption, and adsorption to plant surfaces. PM removal occurs through deposition on leaves and other plant surfaces (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B7\" data-original-title=\"\" title=\"\">7</a></span>). However, most <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">PM</a></span> is resuspended to the atmosphere, washed off by rain, or dropped to the ground (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100\" data-original-title=\"\" title=\"\">100</a></span>). Empirical studies (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B34\" data-original-title=\"\" title=\"\">34</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B113\" data-original-title=\"\" title=\"\">113</a></span>) and modeling studies (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B103\" data-original-title=\"\" title=\"\">103</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B120\" data-original-title=\"\" title=\"\">120</a></span>) suggest that urban tree canopy generally reduces air pollution levels by no more than a few percentage points, and often far less, although some results suggest more efficient removal of PM (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B59\" data-original-title=\"\" title=\"\">59</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B63\" data-original-title=\"\" title=\"\">63</a></span>) and certain volatile organic compounds (VOCs) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B70\" data-original-title=\"\" title=\"\">70</a></span>). Because trees may reduce air movement, especially in restricted spaces such as urban “canyons,” they may impede the localized dispersion of pollutants. Local factors such as the density, species composition, and age of the tree canopy, the concentration of air pollutants, and the length of the in-leaf season influence the extent of pollutant removal.</p>\\n\\n            <p>Plants may also affect indoor air quality—an important observation because people in developed nations may spend as much as 90% of their time indoors. <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">VOCs</a></span> such as benzene and formaldehyde may derive from furniture, carpets, cleaning agents, paint, and other sources. Indoor plants, especially such species as English ivy and spider plant, have been shown to reduce levels of many VOCs (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B81\" data-original-title=\"\" title=\"\">81</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B140\" data-original-title=\"\" title=\"\">140</a></span>). Bacteria in the soil may account for some VOC scavenging attributed to the plants (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B102\" data-original-title=\"\" title=\"\">102</a></span>).</p>\\n\\n            <p>In contrast to pollutant removal, trees can also be a source of hydrocarbons, including isoprene and terpenes, with considerable variation by species (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B9\" data-original-title=\"\" title=\"\">9</a></span>). These biogenic hydrocarbons may function as precursors of ozone and secondary organic aerosols (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B20\" data-original-title=\"\" title=\"\">20</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B74\" data-original-title=\"\" title=\"\">74</a></span>). Modeling studies have assessed the relative contribution of biogenic emissions to pollution levels (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B112\" data-original-title=\"\" title=\"\">112</a></span>). Results vary depending on the species of trees in a canopy, local atmospheric chemistry (especially levels of other precursors, such as NOx), local weather, and other factors.</p>\\n\\n            <p>Trees, grasses, and other plants release pollens, which can aggravate allergies and asthma in susceptible people (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B18\" data-original-title=\"\" title=\"\">18</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B27\" data-original-title=\"\" title=\"\">27</a></span>). The culprits vary with geography but include ragweed, grasses (e.g., Timothy, Bermuda, bluegrass), and trees such as catalpa and walnut. In cities that have favored trees that are heavy pollen producers, the health impact may be especially significant (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19\" data-original-title=\"\" title=\"\">19</a></span>). A study of African American and Dominican children in New York City found a small but significant association between tree canopy extent and asthma and allergic sensitization (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B83\" data-original-title=\"\" title=\"\">83</a></span>). Hence, in some circumstances, the allergenic role of trees may eclipse their ability to improve health by reducing air contaminants.</p>\\n\\n            <p>Vegetation, especially trees, may also indirectly benefit air quality. During warm weather, trees reduce summer air conditioning demand by shading and hence cooling buildings and through the cooling effects of evapotranspiration. This effect, in turn, reduces energy demand, which, in areas served by coal-fired power plants, reduces air pollution derived from coal combustion, though not necessarily at the same location (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B1\" data-original-title=\"\" title=\"\">1</a></span>). During cold weather, the reverse can happen. In a simulation study in Sacramento, trees reduced the need for cooling energy in summer about three times more than they increased the need for warming energy in winter (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B114\" data-original-title=\"\" title=\"\">114</a></span>). The monetary benefits of energy savings related to trees may exceed those of the pollutant removal (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B13\" data-original-title=\"\" title=\"\">13</a></span>).</p>\\n\\n            <p>The overall impact of vegetation on air quality is therefore a function of several processes, operating in opposing directions: hydrocarbon emissions, pollen production, pollutant uptake, and effects on energy demand. Careful selection of species, design of planting configurations with regard to wind, shade, and other impacts, and maintenance of urban vegetation can optimize the beneficial effects on air quality (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B30\" data-original-title=\"\" title=\"\">30</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100\" data-original-title=\"\" title=\"\">100</a></span>).</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Physical Activity</span>\\n\\n            <p>Physical activity promotes physical and mental health across the life span (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B10\" data-original-title=\"\" title=\"\">10</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B61\" data-original-title=\"\" title=\"\">61</a></span>). Recent evidence suggests that the health benefits of increased physical activity are largest among those who were initially doing the least (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B104\" data-original-title=\"\" title=\"\">104</a></span>). The outdoor environment may influence how physically active an individual is by offering suitable spaces for certain types of activities. It may also attract people outdoors because of the experiences it offers. Such outings ordinarily entail some form of physical activity, usually walking.</p>\\n\\n            <p>An important precondition for the use of natural environments for physical activity is individuals\\' (perceived) safety (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B62\" data-original-title=\"\" title=\"\">62</a></span>). Although there are possible negative effects associated with physical activity (e.g., sports injuries) as well as with being in a natural environment (e.g., Lyme disease from tick bites), most of these effects are not specific to physical activity in a natural environment.</p>\\n\\n            <p>Green space is only one part or aspect of the physical environment relevant for physical activity. Which environmental characteristics promote or hamper physical activity may depend strongly on the type of activity at hand (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B5\" data-original-title=\"\" title=\"\">5</a></span>). Three broad activity domains may be identified: work (including study), active transport (walking, cycling), and leisure (recreation, sport). Within the work domain, the greenness of the setting is thought to be of little importance for the amount of physical activity. The same is not true for active transport. Natural features may lead people to favor walking or cycling over other transport modes by making routes to destinations more attractive; however, distance to destination, availability of suitable infrastructure (e.g., sidewalks, bicycle paths), and safety are more important factors (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55\" data-original-title=\"\" title=\"\">55</a></span>). The evidence for association between green space and active transport (walking and/or cycling) is mixed, and this heterogeneity has been well summarized by recent systematic reviews (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B40\" data-original-title=\"\" title=\"\">40</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B78\" data-original-title=\"\" title=\"\">78</a></span>). Reasons for (noncausal) negative associations may be that large amounts of green space tend to go together with (<span class=\"jp-italic\">a</span>) greater distances to destinations, (<span class=\"jp-italic\">b</span>) higher levels of car ownership, and (<span class=\"jp-italic\">c</span>) better availability and lower cost of car parking spaces near one\\'s home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B28\" data-original-title=\"\" title=\"\">28</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55\" data-original-title=\"\" title=\"\">55</a></span>).</p>\\n\\n            <p>The importance of natural environments for fostering physical activity may vary by population subgroup. Children are perhaps the most commonly studied subgroup in this context, but again results are mixed. In one review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B29\" data-original-title=\"\" title=\"\">29</a></span>), ∼40% of the studies in which environmental characteristics were objectively measured showed park access or vegetation to be positively associated with children\\'s physical activity levels; in the other 60% of the studies, no association was observed. A further systematic review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B35\" data-original-title=\"\" title=\"\">35</a></span>) concluded that for (young) children the safety of the environment as perceived by their parents was an important moderating factor. Results from studies of older people are also mixed; two recent systematic reviews arrived at different conclusions. One (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B128\" data-original-title=\"\" title=\"\">128</a></span>) reviewed studies on the physical environment in general and concluded that there was no clear relationship between green space (and most other physical environmental characteristics) and physical activity of older people. The other specifically focused on green space, however, and it observed that seven out of eight studies showed a positive relationship between the greenness of the living environment and physical activity levels of older people (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B17\" data-original-title=\"\" title=\"\">17</a></span>). It also concluded that the perception of safety is an important moderating factor.</p>\\n\\n            <p>Relatively little attention has been paid to the relevance of specific environmental characteristics, such as the type of greenery or the quality of the open space. Results are again mixed. One study (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B46\" data-original-title=\"\" title=\"\">46</a></span>) concluded that very good access to large, very attractive public open space was associated with higher levels of walking. Another (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B56\" data-original-title=\"\" title=\"\">56</a></span>) by contrast observed no relationship between access to large, high-quality urban green spaces and recreational physical activity. A third study (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>) observed a relationship of quality (but not quantity) of streetscape greenery with “green” activity, though not with total physical activity. Finally, recent results suggest that community gardening is associated with a lower body mass index (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B141\" data-original-title=\"\" title=\"\">141</a></span>).</p>\\n\\n            <p>Given that physical activity is assumed to be an important pathway joining nature with health, we find it surprising that few studies have formally investigated the extent to which any association between nature and health might be mediated by physical activity levels. Of four studies done (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B88\" data-original-title=\"\" title=\"\">88</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B109\" data-original-title=\"\" title=\"\">109</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>), only one (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>) concluded that physical activity (more specifically recreational walking) was indeed an important mediator.</p>\\n\\n            <p>Finally, we note that most of the studies referred to in this overview have been cross-sectional in nature. Hence, the direction of observed relationships remains open to alternative explanations. For example, some people may choose a highly car-dependent (and presumably more green) living environment because they are not inclined to be physically active anyway (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B32\" data-original-title=\"\" title=\"\">32</a></span>).</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Social Cohesion</span>\\n\\n            <p>Much as for physical activity, abundant research has documented positive associations between social relationships and health and well-being (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B57\" data-original-title=\"\" title=\"\">57</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B97\" data-original-title=\"\" title=\"\">97</a></span>). Such salutary associations have also been observed for positive relationships specifically within the neighborhood (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110\" data-original-title=\"\" title=\"\">110</a></span>). A variety of terms have been introduced to reflect the potential value of social relationships in this context, including social capital, social support, social cohesion, and sense of community. Although these terms are often used interchangeably (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4\" data-original-title=\"\" title=\"\">4</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110\" data-original-title=\"\" title=\"\">110</a></span>), we draw a distinction here between social capital and social cohesion. Social capital comprises primarily those resources available to an individual through his or her social connections, which may be activated in times of need. In contrast, social cohesion refers to shared norms and values, the existence of positive and friendly relationships, and feelings of being accepted and belonging (cf. 36). We prefer to use the term social cohesion here because it is more a characteristic of neighborhoods than of individuals (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4\" data-original-title=\"\" title=\"\">4</a></span>) and so more likely to be influenced by physical characteristics of the neighborhood, such as the availability and quality of green space and natural elements.</p>\\n\\n            <p>Unlike physical activity, the environmental correlates of social cohesion have received little research attention thus far. Generally, the few studies available suggest a positive relationship between social cohesion and natural environments (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B38\" data-original-title=\"\" title=\"\">38</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85\" data-original-title=\"\" title=\"\">85</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>). Sugiyama et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>), for example, found perceived social coherence and local social interaction to be associated with the perceived greenness of the neighborhood. De Vries et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>) found an association between streetscape greenery and perceived social cohesion at the neighborhood scale, both for the quantity and, even more strongly, for the quality of greenery.</p>\\n\\n            <p>Social cohesion within a neighborhood does not lend itself to experimental research, which makes it difficult to determine whether relations with environmental features are causal. A few studies have, however, taken advantage of circumstances that likened a natural experiment. Researchers in Chicago (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77\" data-original-title=\"\" title=\"\">77</a></span>) took advantage of quasi-random assignment of public housing residents to dwelling units in architecturally similar high-rise buildings with varying amounts of vegetation outside. They found a positive association between the presence of trees and grass on the use of common spaces and informal social contact with neighbors. Moreover, the relationship between greenery and social contacts appeared to be mediated by the use of the common spaces.</p>\\n\\n            <p>The research in Chicago (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77\" data-original-title=\"\" title=\"\">77</a></span>) also showed that social contact was positively related to one\\'s sense of safety. Subsequent studies showed that residents with more trees and grass around their buildings displayed less aggressive behavior, and their buildings were associated with fewer crimes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75\" data-original-title=\"\" title=\"\">75</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76\" data-original-title=\"\" title=\"\">76</a></span>). More recent research suggests similar positive effects of greening vacant lots, especially a reduction in gun assaults and disorderly conduct (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14\" data-original-title=\"\" title=\"\">14</a></span>).</p>\\n\\n            <p>Other attributes of the environment may moderate any association between natural features and social cohesion. Arguably, local parks must be well maintained and provide attractive recreational facilities to realize their full potential in developing social ties (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B71\" data-original-title=\"\" title=\"\">71</a></span>). Although green space generally is positively associated with feelings of safety, in dense urban areas enclosed green spaces may reduce such feelings (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B84\" data-original-title=\"\" title=\"\">84</a></span>). Similarly, trees in the public realm have been associated with reduced crime rates, but small trees on private lots have been associated with increased crime rates, presumably because these trees make it more difficult to observe criminal activity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B31\" data-original-title=\"\" title=\"\">31</a></span>). Some natural settings, such as community gardens, incorporate social ties almost by definition. In one study, older allotment gardeners reported having more contacts with friends and felt less lonely than did nongardening neighbors in the same age category (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B131\" data-original-title=\"\" title=\"\">131</a></span>).</p>\\n\\n            <p>The question remains whether social cohesion, sense of safety, aggressive behavior, and crime rates mediate an eventual relationship between contact with nature and health. Results from a few cross-sectional studies bear on this point. One found that social cohesion partially mediated the relationship between perceived neighborhood greenness and mental health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>). Another concluded that feelings of loneliness and perceived shortage of social support partially mediated the relationship between the amount of green space within one kilometer and overall health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85\" data-original-title=\"\" title=\"\">85</a></span>). A third found that social cohesion mediated relationships between quantity and quality of streetscape greenery and both overall health and mental health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>). In contrast, Francis et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B39\" data-original-title=\"\" title=\"\">39</a></span>) found neither sense of community nor social support to be an important mediator of the relationship between the quality of public open space and mental health. No studies were identified on mediation by aggressive behavior, fear of crime, and/or crime rates.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Stress Reduction</span>\\n\\n            <p>By helping people maintain adaptive resources needed to meet the demands of life, nature can reduce risk of illnesses involving chronic stress, as well as promote a range of intermediate outcomes such as increased subjective well-being. It can do so in two general ways. First, natural areas and features can reduce exposure to challenging environmental conditions by increasing distance to stressors and/or decreasing their perceptual salience. For example, green spaces between residences and heavily trafficked roads can reduce occupant noise annoyance (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B99\" data-original-title=\"\" title=\"\">99</a></span>), vegetation can conceal displeasing structures (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B115\" data-original-title=\"\" title=\"\">115</a></span>), and landscaping around housing can help residents maintain privacy and avoid feelings of crowding (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B23\" data-original-title=\"\" title=\"\">23</a></span>).</p>\\n\\n            <p>Second, nature can help people restore their adaptive resources. Escape from physical and social stressors has long been described as an important motive for recreation in natural areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B58\" data-original-title=\"\" title=\"\">58</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72\" data-original-title=\"\" title=\"\">72</a></span>). Nature\\'s restorative quality does not, however, depend only on an absence of stressors; its restorative quality is also defined in positive terms. Another persistent motive for outdoor recreation has been appreciation of nature—for beautiful scenery, symbolic qualities, and other valued attributes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72\" data-original-title=\"\" title=\"\">72</a></span>). Push and pull motives also work in tandem in contexts other than outdoor recreation, notably the residential context. For example, residential location decisions commonly reflect efforts to both minimize stressful exposures and enhance access to restorative amenities, including green (or blue, i.e., water) areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B51\" data-original-title=\"\" title=\"\">51</a></span>).</p>\\n\\n            <p>This motive combination appears in two theories about how nature can promote more rapid and complete restoration than other environments can. They offer contrasting views on how restoration can proceed once a person has gained psychological distance from threats and other demands. Psychoevolutionary theory holds that, for a person experiencing acute stress, nature contact can very rapidly evoke positive affect, which in turn blocks negative thoughts and feelings and fosters reduction of physiological activation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B126\" data-original-title=\"\" title=\"\">126</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B127\" data-original-title=\"\" title=\"\">127</a></span>). Evolution purportedly conserved this functional aesthetic response because more rapid recovery from acute stress would have helped proto-humans better prepare for the next survival task. In contrast, attention restoration theory holds that effortless attention engaged by intrinsically interesting aspects of nature enables rest for a fatigued neurocognitive inhibitory mechanism engaged when willfully directing attention (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67\" data-original-title=\"\" title=\"\">67</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68\" data-original-title=\"\" title=\"\">68</a></span>). People must inhibit task-irrelevant stimuli as they direct their attention at work and in many other circumstances. Fatigue of this directed attention capability occurs commonly, undermines effective action, and can increase susceptibility to stress (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68\" data-original-title=\"\" title=\"\">68</a></span>).</p>\\n\\n            <p>Informed by one or both of these theories, true and quasi-experiments done in laboratory and field settings have assessed diverse affective, cognitive, and physiological effects of more and less natural comparison conditions, realized over varying but generally brief time spans after a naturalistic or experimental induction of a need for restoration. Published studies generally report some restorative advantage of nature, and by 2004, reviewers had judged the evidence for restorative effects of nature to be strong (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54\" data-original-title=\"\" title=\"\">54</a></span>). More recently, methodological heterogeneity led other reviewers (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B11\" data-original-title=\"\" title=\"\">11</a></span>) to include only 3–6 studies in quantitative syntheses for each of several outcomes. They concluded, nonetheless, that the available studies provided reliable evidence of reductions in self-reported anger, fatigue, anxiety, and sadness and an increase in feelings of energy. They also found tentative evidence of enhanced attention. Conclusions regarding physiological effects were limited by a lack of studies that had the desired design features. Studies done since that 2010 review have further expanded the body of experimental evidence in several directions: additional comparison conditions [e.g., more or less open vegetation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B45\" data-original-title=\"\" title=\"\">45</a></span>); encountered in different ways, e.g., work site desktop relaxation packages (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B60\" data-original-title=\"\" title=\"\">60</a></span>)], alone or in company (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B64\" data-original-title=\"\" title=\"\">64</a></span>), and in additional subpopulations [e.g., children with attention deficit disorder (ADD) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121\" data-original-title=\"\" title=\"\">121</a></span>), with effects registered using additional measurement techniques (e.g., cortisol; <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B129\" data-original-title=\"\" title=\"\">129</a></span>)].</p>\\n\\n            <p>Other research assumes cumulative health effects of more effective restoration on many occasions over time. That work is bolstered by studies that situate repeated contact with nature into an ongoing process of self-regulation. Such studies recognize that some people learn that natural settings are more likely than other settings to be restorative. Over time, they apply this knowledge to better manage adaptive resources such as attentional capacity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B69\" data-original-title=\"\" title=\"\">69</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B73\" data-original-title=\"\" title=\"\">73</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B116\" data-original-title=\"\" title=\"\">116</a></span>). When and how that learning begins remain understudied, but childhood experience appears influential for environmental attitudes measured in later life (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B133\" data-original-title=\"\" title=\"\">133</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B136\" data-original-title=\"\" title=\"\">136</a></span>). Some research does suggest that restorative childhood contact with nature can cumulatively provide benefits with far-reaching developmental significance. Contact with nature may for example improve attentional function in children with <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">ADD</a></span> (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121\" data-original-title=\"\" title=\"\">121</a></span>) and enhance self-discipline in children without a diagnosis (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B122\" data-original-title=\"\" title=\"\">122</a></span>).</p>\\n\\n            <p>Observational studies commonly cite nature\\'s cumulative stress-reducing or restorative effects as one plausible pathway by which residential green space might affect perceived health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87\" data-original-title=\"\" title=\"\">87</a></span>), diverse forms of morbidity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86\" data-original-title=\"\" title=\"\">86</a></span>), and death from circulatory disease and other causes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>). To date, however, most studies with individual data have not directly addressed a stress-reduction pathway owing to a lack of measures suitable for assessing mediation. One early quasi-experiment did however assess mediation with reference to attention restoration (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76\" data-original-title=\"\" title=\"\">76</a></span>), and some recent surveys have begun to address this issue with self-report measures (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B117\" data-original-title=\"\" title=\"\">117</a></span>). Another study has considered variation in the level of cortisol as a biomarker of chronic stress in members of a community sample living in more or less green circumstances (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B134\" data-original-title=\"\" title=\"\">134</a></span>); such a measure could serve tests of mediation of the effect of nature on stress-related illnesses.</p>\\n\\n            <p>Some studies have framed nature as a stress buffer, which has entailed estimating the interactive effect of stressful demands and access to nature on some health outcome. Several studies focused on nature in the residential context are illustrative. In a study done in rural New York state, conflicts at school experienced during the preceding three months were less strongly associated with psychological distress in children who had more nature in and around the home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B135\" data-original-title=\"\" title=\"\">135</a></span>). In a Dutch study, the relationships between stressful life events in the previous three months and both health complaints and perceived general health were weaker among those with more green space within 3 km of the home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B130\" data-original-title=\"\" title=\"\">130</a></span>). In an ecological study covering the population of England, high income deprivation had a weaker association with all-cause and circulatory disease mortality among people living in areas with relatively large amounts of green space (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>).</p>\\n\\n            <p>In sum, substantial evidence speaks to the potential benefits of contact with nature for avoiding health problems traceable to chronic stress and attentional fatigue; however, the greater part of this evidence concerns the short-term restorative benefits of single encounters with or experiences in nature.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">The Pathways Intertwine</span>\\n\\n            <p>Discussions of air quality, physical activity, social cohesion, and stress-reduction pathways emphasize different aspects of nature: as physical environment, as setting for (individual or social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously, as illustrated in <span xmlns:f=\"http://www.example.org/functions\" class=\"xref\"><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1\" data-original-title=\"\" title=\"\">\\n                  <span class=\"jp-bold\">Figure 1</span>\\n               </a></span>.</p>\\n<!--splitRids is f1--><!--currentRid is f1--><!--current position is 167--><!--check position is 51-->\\n            <p>Most individual studies have focused on one particular pathway from nature to health, but some research has addressed combinations involving two or more of them. Much of this work has recognized links between physical activity and stress reduction. People commonly engage in physical activity not only or even primarily because it will serve their health in the long run, but also because it helps them to feel good in the short run, sometimes by reducing tension and stress. Conversely, people who want to enter a natural environment for restoration ordinarily must engage in some form of physical activity to do so. Accordingly, experiments have found “green exercise” more psychologically beneficial than the same exercise in settings with relatively little nature (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B92\" data-original-title=\"\" title=\"\">92</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B105\" data-original-title=\"\" title=\"\">105</a></span>). Thus, being active in natural settings may yield health benefits over and above the benefits of physical activity in other environments (for a meta-analysis, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123\" data-original-title=\"\" title=\"\">123</a></span>). Conversely, a person walking or running along city streets may have to endure aversive conditions that reduce the benefits of the activity itself (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n            <p>Multiple pathways may be purposefully combined in cultural practices that regularly bring people in contact with nature. For example, community gardening may promote social contacts during moderate physical activity that also supports restoration from stress associated with work or other demands. The Japanese practice of Shinrin-yoku, or forest-bathing, involves beliefs about the salutary values of certain substances in the air, and it entails behaviors that ordinarily promote stress reduction (e.g., distancing oneself from everyday demands, adopting a meditative stance) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B124\" data-original-title=\"\" title=\"\">124</a></span>).</p>\\n\\n            <p>Some cultural practices that engage multiple pathways may however not be salutary for all population subgroups. For example, in some countries, many households maintain a simple, inexpensive leisure home in the countryside, to which family members ordinarily travel together during vacation periods; however, as a domestic setting, the leisure home may also impose unwanted demands and on some household members more than others. Swedish research found that, after several years of follow-up, employed men who owned a leisure home had lower odds of retiring early for health reasons (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B50\" data-original-title=\"\" title=\"\">50</a></span>); however, this prospective association did not hold for women. Indeed, among highly educated and highly paid women, the likelihood of early retirement for health reasons was greater if they also owned a leisure home. Other studies have also indicated a potential gender difference in the nature-health relationship (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B107\" data-original-title=\"\" title=\"\">107</a></span>).</p>\\n\\n         </div>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"methodologicalchallenges-1\" id=\"methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>In addition to the usual methodological concerns in experimental and epidemiologic research, we must tackle a litany of specific methodological challenges if we are to develop our understanding of the degree to which, how, and under which circumstances contact with nature affects human health and well-being.</p>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Measuring Exposure to Nature</span>\\n\\n            <p>Contact with nature challenges definition and control in field and laboratory experiments, and it is even more difficult to assess in free-living populations. Studies at population level typically assess exposure in one of three ways: assessments of exposure by how much nature there is in, or close to, the participants\\' area of residence; survey questions about how much time, and/or how often, people visit natural environments; and objective measures of contact via GPS (global positioning systems) technology. Each method has problems; that people live near natural spaces, report visiting them, or position themselves spatially within them does not mean that individuals actually have had contact with nature in a way that affects their health. None of these measures includes visual contact with nature from, for example, windows at home or in the workplace, which may also have beneficial effects (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B66\" data-original-title=\"\" title=\"\">66</a></span>). Furthermore, these measures typically miss fine details of exposure that may be important, such as the timing of exposure (e.g., for many environmental exposures, specific windows of vulnerability exist across the life span), the seasonality of exposure (e.g., the role of deciduous trees being in leaf), the quality of the nature (e.g., area in mature trees versus immature trees versus shrubs versus lawn), and the duration of exposure.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Measuring Outcomes</span>\\n\\n            <p>The other end of the equation between natural environment and health is the assessment of health itself. Plausible health impacts are varied and multiple, positive and negative, psychological and physiological, short term and/or long term. This plurality means many different health measures can be used, which, in turn, makes it difficult to achieve a coherent body of research. There is a particular challenge in bridging what we know about effects of contact with nature from small-scale, shorter-term experimental studies and what we might expect to observe as effects in the real world at the population level. For example, it is difficult to determine what the fall in blood pressure on viewing nature, established in experimental studies, might mean for rates of heart disease among regular visitors to national parks. There is no simple solution to this challenge and no one clearly superior set of instruments or measurements that are suited to use in all settings and studies.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Understanding Mechanisms</span>\\n\\n            <p>Understanding how any relationship between nature and health happens can aid interventions that promote possible benefits. It is also vital for specifying who might benefit most and least from the relationship. The challenge is that, as we have noted, the mechanisms by which nature might affect health are multiple and synergistic. They likely vary in significance within a single contact with nature, between contacts, across the life course, between population subgroups, between environment types and across cultures. Understandings of mechanisms being developed in the relatively controlled conditions of experiments should eventually help epidemiologists to form better hypotheses about the variation in associations they could expect at a population level.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Demonstrating Causality at a Population Level</span>\\n\\n            <p>Positive, short-term effects of contact with nature on affect, cognition, and physiology have been reasonably well established in laboratory and field experiments. However, cross-sectional designs still dominate studies of long-term health outcomes measured in populations. The vulnerability of these designs to confounding and reverse causality is a particular problem. The likelihood of contact with nature is strongly patterned by socioeconomic, ethnic, age, and cultural characteristics, which are, themselves, linked to health. Richardson et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108\" data-original-title=\"\" title=\"\">108</a></span>) provide a fine example of the potential for confounding factors to obscure relationships between green space and health at a population level.</p>\\n\\n            <p>Both experimental and longitudinal observational designs are potential routes to better evidence for a causal relationship among free-living populations. For studies of nature and health, however, both types of study impose specific challenges. Experimental studies at a population level are hard to perform. Manipulating environments or people is difficult and expensive. Scientists often must rely on public agencies or authorities to fund and deliver environmental changes, such as the creation of a new park or trail. It can also be difficult to establish and maintain control sites or populations, and opportunities to randomize the receipt of environmental interventions to different communities are rare. Useful results have emerged from quasi-experimental and before-after studies that capture some of the attributes of true experiments (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14\" data-original-title=\"\" title=\"\">14</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75\" data-original-title=\"\" title=\"\">75</a></span>). The timescale for effects is also often a constraint. Funding to follow-up intervention studies is rarely longer than 3–5 years, but effects at a population level (perhaps even intergenerational effects) may take longer to establish.</p>\\n\\n            <p>Research on nature and health has been undertaken within different scientific paradigms. Attitudes toward the level of proof for an association, indeed attitudes toward the very idea of “proof,” vary between paradigms and are contested within them. Biomedical research, for example, often places great emphasis on low <span class=\"jp-italic\">p</span>-value thresholds for acceptance of an association. Frumkin (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B43\" data-original-title=\"\" title=\"\">43</a></span>) recently suggested, however, that the application of stringent <span class=\"jp-italic\">p</span>-value thresholds needs careful and explicit reconsideration in studies of nature and health. Moving from partial evidence to evidence-based recommendations regarding nature contact is a thorny problem.</p>\\n\\n            <p>For their part, existing panel or cohort studies that have good measures of health and well-being rarely also carry detailed information on contact with natural environments because this topic is relatively new to public health and epidemiology. Moreover, data sets that can also capture the change in or development of natural environments over time are rare.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Effect Size</span>\\n\\n            <p>Evidence suggests that contact with nature has a small effect on health and well-being in comparison to structural characteristics such as income, employment, or education, and behavioral characteristics such as smoking. The signal-to-noise ratio in population-level studies is often small, and these studies need to be well designed and of sufficient power to identify any benefits. This does not mean that such studies are not worth doing, however; a small beneficial effect on a large number of people is a large contribution to population health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B111\" data-original-title=\"\" title=\"\">111</a></span>).</p>\\n\\n         </div>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"prioritiesforfurtherresearch-1\" id=\"prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Throughout this review we have identified issues that warrant further research, and in the previous section we have identified methodological challenges that must be met. Here, we try to highlight some specific priorities for the field.</p>\\n\\n         <p>First, we see a need to seek, create, and take opportunities for population-level experimental studies when they arise, within an understanding of their limits. Doing so will assist in demonstrating the degree to which nature-health relations have meaning for population health. We should also work to incorporate questions about contact with nature in ongoing longitudinal studies and ensure that high-quality data on change in type, quality, and availability of nature are maintained into the future and created retrospectively for the past. These additions would permit studies consistent with both cohort and life-course perspectives on relationships between nature and health.</p>\\n\\n         <p>Second, research on which types of nature are relatively effective for particular outcomes, and which qualities of those types are highly relevant, may be more fruitful when guided by theoretical ideas about why a particular type or quality of that type is likely to contribute to a particular pathway to health. Natural elements that are effective in improving air quality are not necessarily the same as those best suited to improving social cohesion in a neighborhood or to promoting psychological restoration.</p>\\n\\n         <p>Third, with specific regard to the stress pathway, much work remains to be done to rigorously assess theoretical claims regarding the components of experience that sustain attention restoration and stress recovery. To what extent, for example, are beneficial effects dependent on gaining psychological distance from stressful demands versus engaging with positive aspects of the nature encountered? This work will be aided by, among other things, further development of measures of perceived restorative quality in environments, and experimentation that more directly addresses the interplay of stress recovery, attention restoration, and other possible processes through which adaptive resources become renewed (cf. <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n         <p>Fourth, if we acknowledge the competing priorities for funding and investment in health and health care, some research on nature and health might gain from a health economics perspective. If contact with nature is cost-effective as a means to protect and improve population health, it should be resourced and prioritized in preference to other approaches. Arguably, doing so requires knowledge not only about the economic significance of the health benefits generated, but also about the “doses” of nature needed to generate those benefits at the lowest possible cost. Discussions of dose, however, can entail a variety of problems, such as trivialization of contact with nature through neglect of long-term consequences of particularly powerful forms of contact (e.g., life-changing wilderness experiences). The dose metaphor therefore must be handled with care (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B137\" data-original-title=\"\" title=\"\">137</a></span>). As with other health-related issues, economic analyses must extend beyond health impacts to account for other benefits. For instance, an urban park may offer not only health benefits, but also benefits such as stormwater management and enhanced property values.</p>\\n\\n         <p>Finally, variety between population subgroups in access to, use of, and responses to nature remains persistently underexplored. Spatial, social, economic, racial, cultural, and demographic differences in relationships between nature and health seem highly probable. It may be that relationships between nature and health are implicated in exacerbating or mitigating health inequalities between subgroups, for example. This potential should be thoroughly explored.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"concludingcomments-1\" id=\"concludingcomments-1\">CONCLUDING COMMENTS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>We have provided for a general public health audience an overview of research on how contact with nature relates to health in urbanized societies. We have not covered this body of work comprehensively, but instead have focused on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations, such as the availability of urban parks, the amount of green space in and near residential areas, and the preservation of peri-urban natural areas. Given our public health orientation, we have focused on the conditions of everyday life for the greatest part of the populations of interest. We consequently have hardly touched on the extensive literatures on wilderness experience (for reviews, see 72, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B139\" data-original-title=\"\" title=\"\">139</a></span>) and contact with nature in the treatment and management of disability and illnesses such as depression (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B47\" data-original-title=\"\" title=\"\">47</a></span>) and breast cancer (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B21\" data-original-title=\"\" title=\"\">21</a></span>; see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2\" data-original-title=\"\" title=\"\">2</a></span> for a review).</p>\\n\\n         <p>Despite such significant omissions, we trust readers will take away an appreciation not only of the diversity and complexity in forms of nature contact and potential benefits thereof, but also of the many challenges faced in characterizing those contacts and benefits. Taken together, the research reviewed does indicate that contact with nature can promote health. The evidence for some benefits, such as short-term restorative effects, is already quite strong. That said, nature contact should not be assumed always and automatically to be good for health; we have more to learn about for whom, when, how, and in which contexts it offers benefits.</p>\\n\\n         <p>Much also remains to be done to help those responsible for environmental policy, design, and management to make realistic assessments of what nature can and cannot do in their domain of activity. Part of this task involves explaining how health benefits might coincide (versus conflict with) other benefits, such as better stormwater management, species preservation, and carbon sequestration. If a particular form of nature contact shows small health benefits, interventions to promote it may still justify public investment if the health benefits combine with other benefits.</p>\\n\\n         <p>In closing, we recognize that many people speak of human-nature relations in moral/ethical and spiritual/religious terms with a view toward preservation of the natural environment. We respect such views. Our observations here regarding human health values should not be understood as the only or even the main bases for arguments regarding protection of habitats, species, and ecosystem integrity.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n   \\n</div>\\n\\n<div id=\"article-level-0-back\">\\n<div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"disclosurestatement-1\" id=\"disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><p>H. Frumkin is a board member of the US Green Building Council and of the Children and Nature Network. R. Mitchell supervises a doctoral student funded by the UK Forestry Commission and has received research funding from the Forestry Commission in the recent past. The other authors are not aware of any affiliations, memberships, funding, or financial holdings that might be perceived as affecting the objectivity of this review.</p>\\n<div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"acknowledgments-1\" id=\"acknowledgments-1\">ACKNOWLEDGMENTS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><div>\\n            \\n<span class=\"tl-lowest-section\">\\n               <span class=\"jp-small\">acknowledgments</span>\\n            </span>\\n\\n            <p>R. Mitchell was funded under a European Research Council grant (ERC-2010-StG Grant 263501).</p>\\n\\n         </div>\\n<div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"literaturecited-1\" id=\"literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><span class=\"references\"><ol id=\"articlereference\" class=\"articlereference-vancouver\">\\n<li class=\"refbody\" id=\"B1\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Akbari</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Kurn</span> <span class=\"reference-given-names\">DM</span>, <span class=\"reference-surname\">Bretz</span> <span class=\"reference-given-names\">SE</span>, <span class=\"reference-surname\">Hanford</span> <span class=\"reference-given-names\">JW</span>. <span class=\"citation-label\">1.\\u2002</span> <span class=\"reference-year\">1997</span>. <span class=\"reference-article-title\"> Peak power and cooling energy savings of shade trees. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Energy Build.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">139–</span><span class=\"reference-lpage\">48</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&amp;author=H+Akbari&amp;author=DM+Kurn&amp;author=SE+Bretz&amp;author=JW+Hanford&amp;journal=Energy+Build.&amp;volume=25&amp;pages=139-48&amp;publication_year=1997&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B2\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Annerstedt</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Währborg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">2.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Nature-assisted therapy: systematic review of controlled and observational studies. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">39</span>:<span class=\"reference-fpage\">371–</span><span class=\"reference-lpage\">88</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&amp;author=M+Annerstedt&amp;author=P+W%C3%A4hrborg&amp;journal=Scand.+J.+Public+Health&amp;volume=39&amp;pages=371-88&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B3\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">3.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3947–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&amp;author=J+Barton&amp;author=J+Pretty&amp;journal=Environ.+Sci.+Technol.&amp;volume=44&amp;pages=3947-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B4\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Baum</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Ziersch</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Zhang</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Osborne</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">4.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">925–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&amp;author=FE+Baum&amp;author=AM+Ziersch&amp;author=G+Zhang&amp;author=K+Osborne&amp;journal=Health+Place&amp;volume=15&amp;pages=925-34&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B5\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bauman</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Reis</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">JC</span>, <span class=\"reference-surname\">Loos</span> <span class=\"reference-given-names\">RJ</span>, <span class=\"reference-surname\">Martin</span> <span class=\"reference-given-names\">BW</span>. <span class=\"citation-label\">5.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Correlates of physical activity: Why are some people physically active and others not?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">380</span>:<span class=\"reference-fpage\">258–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&amp;author=AE+Bauman&amp;author=RS+Reis&amp;author=JF+Sallis&amp;author=JC+Wells&amp;author=RJ+Loos&amp;author=BW+Martin&amp;journal=Lancet&amp;volume=380&amp;pages=258-71&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B6\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beck</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Meyers</span> <span class=\"reference-given-names\">NM</span>. <span class=\"citation-label\">6.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Health enhancement and companion animal ownership. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">247–</span><span class=\"reference-lpage\">57</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&amp;author=AM+Beck&amp;author=NM+Meyers&amp;journal=Annu.+Rev.+Public+Health&amp;volume=17&amp;pages=247-57&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B7\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beckett</span> <span class=\"reference-given-names\">KP</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">PH</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">7.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> The capture of particulate pollution by trees at five contrasting urban sites. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Arboric. J.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">209–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&amp;author=KP+Beckett&amp;author=PH+Freer-Smith&amp;author=G+Taylor&amp;journal=Arboric.+J.&amp;volume=24&amp;pages=209-30&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B8\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bedimo-Rung</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Mowen</span> <span class=\"reference-given-names\">AJ</span>, <span class=\"reference-surname\">Cohen</span> <span class=\"reference-given-names\">DA</span>. <span class=\"citation-label\">8.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The significance of parks to physical activity and public health: a conceptual model. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">159–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&amp;author=AL+Bedimo-Rung&amp;author=AJ+Mowen&amp;author=DA+Cohen&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=159-68&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B9\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Benjamin</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Winer</span> <span class=\"reference-given-names\">AM</span>. <span class=\"citation-label\">9.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Estimating the ozone-forming potential of urban trees and shrubs. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">53–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&amp;author=MT+Benjamin&amp;author=AM+Winer&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=53-68&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B10\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bize</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Johnson</span> <span class=\"reference-given-names\">JA</span>, <span class=\"reference-surname\">Plotnikoff</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">10.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Physical activity level and health-related quality of life in the general adult population: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Prev. Med.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">15</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&amp;author=R+Bize&amp;author=JA+Johnson&amp;author=RC+Plotnikoff&amp;journal=Prev.+Med.&amp;volume=45&amp;pages=401-15&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B11\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">LM</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">11.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> A systematic review of evidence for the added benefits to health of exposure to natural environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">10</span>:<span class=\"reference-fpage\">456</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&amp;author=DE+Bowler&amp;author=LM+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=BMC+Public+Health&amp;volume=10&amp;pages=456&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B12\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">12.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Urban greening to cool towns and cities: a systematic review of the empirical evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">97</span>:<span class=\"reference-fpage\">147–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&amp;author=DE+Bowler&amp;author=L+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=Landsc.+Urban+Plann.&amp;volume=97&amp;pages=147-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B13\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brack</span> <span class=\"reference-given-names\">CL</span>. <span class=\"citation-label\">13.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollution mitigation and carbon sequestration by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">116</span>:<span class=\"reference-fpage\">S195–</span><span class=\"reference-lpage\">200</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&amp;author=CL+Brack&amp;journal=Environ.+Pollut.&amp;volume=116&amp;pages=S195-200&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B14\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Branas</span> <span class=\"reference-given-names\">CC</span>, <span class=\"reference-surname\">Cheney</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">MacDonald</span> <span class=\"reference-given-names\">JM</span>, <span class=\"reference-surname\">Tam</span> <span class=\"reference-given-names\">VW</span>, <span class=\"reference-surname\">Jackson</span> <span class=\"reference-given-names\">TD</span>, <span class=\"reference-surname\">Ten Have</span> <span class=\"reference-given-names\">TR</span>. <span class=\"citation-label\">14.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> A difference-in-differences analysis of health, safety, and greening vacant urban space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Epidemiol.</span></span> <span class=\"reference-volume\">174</span>:<span class=\"reference-fpage\">1296–</span><span class=\"reference-lpage\">306</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&amp;author=CC+Branas&amp;author=RA+Cheney&amp;author=JM+MacDonald&amp;author=VW+Tam&amp;author=TD+Jackson&amp;author=TR+Ten+Have&amp;journal=Am.+J.+Epidemiol.&amp;volume=174&amp;pages=1296-306&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B15\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bratman</span> <span class=\"reference-given-names\">GN</span>, <span class=\"reference-surname\">Hamilton</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Daily</span> <span class=\"reference-given-names\">GC</span>. <span class=\"citation-label\">15.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The impacts of nature experience on human cognitive function and mental health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. N.Y. Acad. Sci.</span></span> <span class=\"reference-volume\">1249</span>:<span class=\"reference-fpage\">118–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&amp;author=GN+Bratman&amp;author=JP+Hamilton&amp;author=GC+Daily&amp;journal=Ann.+N.Y.+Acad.+Sci.&amp;volume=1249&amp;pages=118-36&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B16\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bringslimark</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>. <span class=\"citation-label\">16.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> The psychological benefits of indoor plants: a critical review of the experimental literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">422–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&amp;author=T+Bringslimark&amp;author=T+Hartig&amp;author=GG+Patil&amp;journal=J.+Environ.+Psychol.&amp;volume=29&amp;pages=422-33&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B17\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Broekhuizen</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">SI</span>, <span class=\"reference-surname\">Pierik</span> <span class=\"reference-given-names\">FH</span>. <span class=\"citation-label\">17.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Aging in a Green Living Environment: A Systematic Review of the Literature.</span></span> TNO rep. R10154 Leiden: TNO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&amp;author=K+Broekhuizen&amp;author=SI+de+Vries&amp;author=FH+Pierik&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B18\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brooks</span> <span class=\"reference-given-names\">GD</span>, <span class=\"reference-surname\">Bush</span> <span class=\"reference-given-names\">RK</span>. <span class=\"citation-label\">18.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Allergens and other factors important in atopic disease. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Patterson\\'s Allergic Diseases</span></span> LC Grammer, PA Greenberger <span class=\"reference-fpage\">73–</span><span class=\"reference-lpage\">103</span> Philadelphia: Lippincott, Williams &amp; Wilkins, 7th ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&amp;author=GD+Brooks&amp;author=RK+Bush&amp;journal=Patterson%27s+Allergic+Diseases&amp;pages=73-103&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B19\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cariñanos</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Casares-Porcel</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">19.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">101</span>:<span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">14</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&amp;author=P+Cari%C3%B1anos&amp;author=M+Casares-Porcel&amp;journal=Landsc.+Urban+Plann.&amp;volume=101&amp;pages=205-14&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B20\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Chameides</span> <span class=\"reference-given-names\">WL</span>, <span class=\"reference-surname\">Lindsay</span> <span class=\"reference-given-names\">RW</span>, <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Kiang</span> <span class=\"reference-given-names\">CS</span>. <span class=\"citation-label\">20.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-article-title\"> The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">241</span>:<span class=\"reference-fpage\">1473–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&amp;author=WL+Chameides&amp;author=RW+Lindsay&amp;author=J+Richardson&amp;author=CS+Kiang&amp;journal=Science&amp;volume=241&amp;pages=1473-75&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B21\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cimprich</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">21.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Development of an intervention to restore attention in cancer patients. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Cancer Nurs.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">83–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&amp;author=B+Cimprich&amp;journal=Cancer+Nurs.&amp;volume=16&amp;pages=83-92&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B22\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Colfer</span> <span class=\"reference-given-names\">CJP</span>, <span class=\"reference-surname\">Sheil</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Kishi</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">22.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests and Human Health: Assessing the Evidence</span></span> Bogor, Indones.: Cent. Int. For. Res <a target=\"xrefwindow\" href=\"http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf\"><span class=\"reference-bold\">http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&amp;author=CJP+Colfer&amp;author=D+Sheil&amp;author=M+Kishi&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B23\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Day</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">23.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Plan Educ. Res.</span></span> <span class=\"reference-volume\">19</span>:<span class=\"reference-fpage\">265–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&amp;author=LL+Day&amp;journal=J.+Plan+Educ.+Res.&amp;volume=19&amp;pages=265-75&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B24\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Claßen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Eigenheer-Hug</span> <span class=\"reference-given-names\">S-M</span>, <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">24.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Contributions of natural environments to physical activity. </span> See Ref. 98 <span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&amp;author=S+de+Vries&amp;author=T+Cla%C3%9Fen&amp;author=S-M+Eigenheer-Hug&amp;author=K+Korpela&amp;author=J+Maas&amp;pages=205-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B25\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">25.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Streetscape greenery and health: stress, social cohesion and physical activity as mediators. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">94</span>:<span class=\"reference-fpage\">26–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Soc.+Sci.+Med.&amp;volume=94&amp;pages=26-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B26\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">26.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">1717–</span><span class=\"reference-lpage\">31</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&amp;author=S+de+Vries&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Environ.+Plann.+A&amp;volume=35&amp;pages=1717-31&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B27\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">DellaValle</span> <span class=\"reference-given-names\">CT</span>, <span class=\"reference-surname\">Triche</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Leaderer</span> <span class=\"reference-given-names\">BP</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">ML</span>. <span class=\"citation-label\">27.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Epidemiology</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">55–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&amp;author=CT+DellaValle&amp;author=EW+Triche&amp;author=BP+Leaderer&amp;author=ML+Bell&amp;journal=Epidemiology&amp;volume=23&amp;pages=55-63&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B28\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Den Hertog</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Bronkhorst</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Moerman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Van Wilgenburg</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">28.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit</span> [<span class=\"reference-italic\">The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity</span>].</span> Amsterdam: EMGO Inst.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&amp;author=F+Den+Hertog&amp;author=M+Bronkhorst&amp;author=M+Moerman&amp;author=R+Van+Wilgenburg&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B29\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Kerr</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Lee</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Rosenberg</span> <span class=\"reference-given-names\">DE</span>. <span class=\"citation-label\">29.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Neighborhood environment and physical activity among youth: a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">442–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&amp;author=D+Ding&amp;author=JF+Sallis&amp;author=J+Kerr&amp;author=S+Lee&amp;author=DE+Rosenberg&amp;journal=Am.+J.+Prev.+Med.&amp;volume=41&amp;pages=442-55&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B30\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Domm</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Drew</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Greene</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Ripley</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Tordesillas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">30.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Recommended urban forest mixtures to optimize selected environmental benefits. </span> <span class=\"reference-source\"><span class=\"reference-italic\">EnviroNews: Int. Soc. Environ. Bot.</span></span> <span class=\"reference-volume\">14</span>:<span class=\"reference-fpage\">7–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&amp;author=J+Domm&amp;author=R+Drew&amp;author=A+Greene&amp;author=E+Ripley&amp;author=R+Smardon&amp;author=J+Tordesillas&amp;journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&amp;volume=14&amp;pages=7-10&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B31\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Donovan</span> <span class=\"reference-given-names\">GH</span>, <span class=\"reference-surname\">Prestemon</span> <span class=\"reference-given-names\">JP</span>. <span class=\"citation-label\">31.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The effect of trees on crime in Portland, Oregon. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&amp;author=GH+Donovan&amp;author=JP+Prestemon&amp;journal=Environ.+Behav.&amp;volume=44&amp;pages=3-30&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B32\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Eid</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Overman</span> <span class=\"reference-given-names\">HG</span>, <span class=\"reference-surname\">Puga</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Turner</span> <span class=\"reference-given-names\">MA</span>. <span class=\"citation-label\">32.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Fat city: questioning the relationship between urban sprawl and obesity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Urban Econ.</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">385–</span><span class=\"reference-lpage\">404</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&amp;author=J+Eid&amp;author=HG+Overman&amp;author=D+Puga&amp;author=MA+Turner&amp;journal=J.+Urban+Econ.&amp;volume=63&amp;pages=385-404&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B33\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Engel</span> <span class=\"reference-given-names\">GL</span>. <span class=\"citation-label\">33.\\u2002</span> <span class=\"reference-year\">1977</span>. <span class=\"reference-article-title\"> The need for a new medical model: a challenge for biomedicine. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">196</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&amp;author=GL+Engel&amp;journal=Science&amp;volume=196&amp;pages=129-36&amp;publication_year=1977&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B34\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Escobedo</span> <span class=\"reference-given-names\">FJ</span>, <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>. <span class=\"citation-label\">34.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Spatial heterogeneity and air pollution removal by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">90</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&amp;author=FJ+Escobedo&amp;author=DJ+Nowak&amp;journal=Landsc.+Urban+Plann.&amp;volume=90&amp;pages=102-10&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B35\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ferdinand</span> <span class=\"reference-given-names\">AO</span>, <span class=\"reference-surname\">Sen</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Rahurkar</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Engler</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Menachemi</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">35.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The relationship between built environments and physical activity: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">102</span>:<span class=\"reference-fpage\">e7–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&amp;author=AO+Ferdinand&amp;author=B+Sen&amp;author=S+Rahurkar&amp;author=S+Engler&amp;author=N+Menachemi&amp;journal=Am.+J.+Public+Health&amp;volume=102&amp;pages=e7-13&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B36\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Forrest</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kearns</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">36.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Social cohesion, social capital and the neighbourhood. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban Stud.</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">2125–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&amp;author=R+Forrest&amp;author=A+Kearns&amp;journal=Urban+Stud.&amp;volume=38&amp;pages=2125-43&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B37\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fowler</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">37.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollutant deposition and uptake by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Air Pollution and Plant Life</span></span> JNB Bell, M Treshow <span class=\"reference-fpage\">43–</span><span class=\"reference-lpage\">67</span> New York: Wiley, 2nd ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&amp;author=D+Fowler&amp;journal=Air+Pollution+and+Plant+Life&amp;pages=43-67&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B38\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">38.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Creating sense of community: the role of public space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&amp;author=J+Francis&amp;author=B+Giles-Corti&amp;author=L+Wood&amp;author=M+Knuiman&amp;journal=J.+Environ.+Psychol.&amp;volume=32&amp;pages=401-9&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B39\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">LJ</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">39.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">74</span>:<span class=\"reference-fpage\">1570–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&amp;author=J+Francis&amp;author=LJ+Wood&amp;author=M+Knuiman&amp;author=B+Giles-Corti&amp;journal=Soc.+Sci.+Med.&amp;volume=74&amp;pages=1570-77&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B40\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fraser</span> <span class=\"reference-given-names\">SDS</span>, <span class=\"reference-surname\">Lock</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">40.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Cycling for transport and public health: a systematic review of the effect of the environment on cycling. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eur. J. Public Health</span></span> <span class=\"reference-volume\">21</span>:<span class=\"reference-fpage\">738–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&amp;author=SDS+Fraser&amp;author=K+Lock&amp;journal=Eur.+J.+Public+Health&amp;volume=21&amp;pages=738-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B41\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frost</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Goins</span> <span class=\"reference-given-names\">RT</span>, <span class=\"reference-surname\">Hunter</span> <span class=\"reference-given-names\">RH</span>, <span class=\"reference-surname\">Hooker</span> <span class=\"reference-given-names\">SP</span>, <span class=\"reference-surname\">Bryant</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">41.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Effects of the built environment on physical activity of adults living in rural settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Health Promot.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">267–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&amp;author=SS+Frost&amp;author=RT+Goins&amp;author=RH+Hunter&amp;author=SP+Hooker&amp;author=LL+Bryant&amp;journal=Am.+J.+Health+Promot.&amp;volume=24&amp;pages=267-83&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B42\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">42.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Beyond toxicity: human health and the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">234–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=20&amp;pages=234-40&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B43\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">43.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The evidence of nature and the nature of evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">196–</span><span class=\"reference-lpage\">97</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=44&amp;pages=196-97&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B44\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Galea</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Vlahov</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">44.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Urban health: evidence, challenges, and directions. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">341–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&amp;author=S+Galea&amp;author=D+Vlahov&amp;journal=Annu.+Rev.+Public+Health&amp;volume=26&amp;pages=341-65&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B45\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gatersleben</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Andrews</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">45.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> When walking in nature is not restorative—the role of prospect and refuge. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">91–</span><span class=\"reference-lpage\">101</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&amp;author=B+Gatersleben&amp;author=M+Andrews&amp;journal=Health+Place&amp;volume=20&amp;pages=91-101&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B46\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Broomhall</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Collins</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Douglas</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">46.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Increasing walking: How important is distance to, attractiveness, and size of public open space?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&amp;author=B+Giles-Corti&amp;author=MH+Broomhall&amp;author=M+Knuiman&amp;author=C+Collins&amp;author=K+Douglas&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=169-76&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B47\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gonzalez</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>, <span class=\"reference-surname\">Martinsen</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Kirkevold</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">47.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Therapeutic horticulture in clinical depression: a prospective study of active components. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Adv. Nurs.</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">2002–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&amp;author=MT+Gonzalez&amp;author=T+Hartig&amp;author=GG+Patil&amp;author=EW+Martinsen&amp;author=M+Kirkevold&amp;journal=J.+Adv.+Nurs.&amp;volume=66&amp;pages=2002-13&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B48\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">48.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Nature experience in transactional perspective. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&amp;author=T+Hartig&amp;journal=Landsc.+Urban+Plann.&amp;volume=25&amp;pages=17-36&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B49\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>, <span class=\"reference-surname\">Jamner</span> <span class=\"reference-given-names\">LD</span>, <span class=\"reference-surname\">Davis</span> <span class=\"reference-given-names\">DS</span>, <span class=\"reference-surname\">Gärling</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">49.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Tracking restoration in natural and urban field settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">109–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&amp;author=T+Hartig&amp;author=GW+Evans&amp;author=LD+Jamner&amp;author=DS+Davis&amp;author=T+G%C3%A4rling&amp;journal=J.+Environ.+Psychol.&amp;volume=23&amp;pages=109-23&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B50\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Fransson</span> <span class=\"reference-given-names\">U</span>. <span class=\"citation-label\">50.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">82–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&amp;author=T+Hartig&amp;author=U+Fransson&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=82-96&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B51\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Kylin</span> <span class=\"reference-given-names\">C</span>. <span class=\"citation-label\">51.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Residence in the social ecology of stress and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Soc. Iss.</span></span> <span class=\"reference-volume\">59</span>:<span class=\"reference-fpage\">611–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&amp;author=T+Hartig&amp;author=G+Johansson&amp;author=C+Kylin&amp;journal=J.+Soc.+Iss.&amp;volume=59&amp;pages=611-36&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B52\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Mang</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">52.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Restorative effects of natural environment experiences. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&amp;author=T+Hartig&amp;author=M+Mang&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=23&amp;pages=3-26&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B53\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Hagerhall</span> <span class=\"reference-given-names\">CM</span>, <span class=\"reference-surname\">Tomalak</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">53.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: psychological, social and cultural processes. </span> See Ref. 98 <span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B54\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">54.\\u2002</span><span class=\"reference-collab\">Health Counc. Neth</span> <span class=\"reference-year\">2004</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being.</span></span> The Hague: Health Counc. Neth., RMNO <a target=\"xrefwindow\" href=\"http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf\"><span class=\"reference-bold\">http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&amp;publication_year=2004&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B55\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Heinen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">van Wee</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Maat</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">55.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Commuting by bicycle: an overview of the literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Transp. Rev.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&amp;author=E+Heinen&amp;author=B+van+Wee&amp;author=K+Maat&amp;journal=Transp.+Rev.&amp;volume=30&amp;pages=59-96&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B56\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hillsdon</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Panter</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Foster</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">56.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The relationship between access and quality of urban green space with population physical activity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">120</span>:<span class=\"reference-fpage\">1127–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&amp;author=M+Hillsdon&amp;author=J+Panter&amp;author=C+Foster&amp;author=A+Jones&amp;journal=Public+Health&amp;volume=120&amp;pages=1127-32&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B57\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Holt-Lunstad</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">TB</span>, <span class=\"reference-surname\">Layton</span> <span class=\"reference-given-names\">JB</span>. <span class=\"citation-label\">57.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social relationships and mortality risk: a meta-analytic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">PLoS Med.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">e1000316</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&amp;author=J+Holt-Lunstad&amp;author=TB+Smith&amp;author=JB+Layton&amp;journal=PLoS+Med.&amp;volume=7&amp;pages=e1000316&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B58\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Home</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hunziker</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">58.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Psychosocial outcomes as motivations for visiting nearby urban green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">34</span>:<span class=\"reference-fpage\">350–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&amp;author=R+Home&amp;author=M+Hunziker&amp;author=N+Bauer&amp;journal=Leis.+Sci.&amp;volume=34&amp;pages=350-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B59\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Islam</span> <span class=\"reference-given-names\">MN</span>, <span class=\"reference-surname\">Rahman</span> <span class=\"reference-given-names\">K-S</span>, <span class=\"reference-surname\">Bahar</span> <span class=\"reference-given-names\">MM</span>, <span class=\"reference-surname\">Habib</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Ando</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hattori</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">59.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Pollution attenuation by roadside greenbelt in and around urban areas. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">460–</span><span class=\"reference-lpage\">64</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&amp;author=MN+Islam&amp;author=K-S+Rahman&amp;author=MM+Bahar&amp;author=MA+Habib&amp;author=K+Ando&amp;author=N+Hattori&amp;journal=Urban+For.+Urban+Green.&amp;volume=11&amp;pages=460-64&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B60\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jahncke</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Hygge</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Halin</span> <span class=\"reference-given-names\">N</span>, <span class=\"reference-surname\">Green</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Dimberg</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">60.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Open-plan office noise: cognitive performance and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">31</span>:<span class=\"reference-fpage\">373–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&amp;author=H+Jahncke&amp;author=S+Hygge&amp;author=N+Halin&amp;author=AM+Green&amp;author=K+Dimberg&amp;journal=J.+Environ.+Psychol.&amp;volume=31&amp;pages=373-82&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B61\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Janssen</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">LeBlanc</span> <span class=\"reference-given-names\">AG</span>. <span class=\"citation-label\">61.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Behav. Nutr. Phys. Act.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&amp;author=I+Janssen&amp;author=AG+LeBlanc&amp;journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&amp;volume=7&amp;pages=40&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B62\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Fors</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Lindgren</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Wiström</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">62.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Perceived personal safety in relation to urban woodland vegetation—a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&amp;author=M+Jansson&amp;author=H+Fors&amp;author=T+Lindgren&amp;author=B+Wistr%C3%B6m&amp;journal=Urban+For.+Urban+Green.&amp;volume=12&amp;pages=127-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B63\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jim</span> <span class=\"reference-given-names\">CY</span>, <span class=\"reference-surname\">Chen</span> <span class=\"reference-given-names\">WY</span>. <span class=\"citation-label\">63.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Manag.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">665–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&amp;author=CY+Jim&amp;author=WY+Chen&amp;journal=J.+Environ.+Manag.&amp;volume=88&amp;pages=665-76&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B64\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">64.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Psychological benefits of walking: moderation by company and outdoor environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Appl. Psychol. Health Well-Being</span></span> <span class=\"reference-volume\">3</span>:<span class=\"reference-fpage\">261–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&amp;author=M+Johansson&amp;author=T+Hartig&amp;author=H+Staats&amp;journal=Appl.+Psychol.+Health+Well-Being&amp;volume=3&amp;pages=261-80&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B65\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaczynski</span> <span class=\"reference-given-names\">AT</span>, <span class=\"reference-surname\">Henderson</span> <span class=\"reference-given-names\">KA</span>. <span class=\"citation-label\">65.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Environmental correlates of physical activity: a review of evidence about parks and recreation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">315–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&amp;author=AT+Kaczynski&amp;author=KA+Henderson&amp;journal=Leis.+Sci.&amp;volume=29&amp;pages=315-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B66\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">66.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> The role of nature in the context of the workplace. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">193–</span><span class=\"reference-lpage\">201</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&amp;author=R+Kaplan&amp;journal=Landsc.+Urban+Plann.&amp;volume=26&amp;pages=193-201&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B67\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">67.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-source\"><span class=\"reference-italic\">The Experience of Nature: A Psychological Perspective</span></span> New York: Cambridge Univ. Press\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&amp;author=R+Kaplan&amp;author=S+Kaplan&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B68\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">68.\\u2002</span> <span class=\"reference-year\">1995</span>. <span class=\"reference-article-title\"> The restorative benefits of nature: toward an integrative framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&amp;author=S+Kaplan&amp;journal=J.+Environ.+Psychol.&amp;volume=15&amp;pages=169-82&amp;publication_year=1995&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B69\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">69.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Meditation, restoration, and the management of mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">480–</span><span class=\"reference-lpage\">506</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&amp;author=S+Kaplan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=480-506&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B70\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Karl</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Harley</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Emmons</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Thornton</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Guenther</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">70.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">330</span>:<span class=\"reference-fpage\">816–</span><span class=\"reference-lpage\">19</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&amp;author=T+Karl&amp;author=P+Harley&amp;author=L+Emmons&amp;author=B+Thornton&amp;author=A+Guenther&amp;journal=Science&amp;volume=330&amp;pages=816-19&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B71\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaźmierczak</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">71.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The contribution of local parks to neighbourhood social ties. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">109</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">44</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&amp;author=A+Ka%C5%BAmierczak&amp;journal=Landsc.+Urban+Plann.&amp;volume=109&amp;pages=31-44&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B72\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Knopf</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">72.\\u2002</span> <span class=\"reference-year\">1987</span>. <span class=\"reference-article-title\"> Human behavior, cognition, and affect in the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Handbook of Environmental Psychology</span></span> D Stokols, I Altman <span class=\"reference-fpage\">783–</span><span class=\"reference-lpage\">825</span> New York: Wiley\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&amp;author=RC+Knopf&amp;journal=Handbook+of+Environmental+Psychology&amp;pages=783-825&amp;publication_year=1987&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B73\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">73.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Restorative qualities of favorite places. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&amp;author=K+Korpela&amp;author=T+Hartig&amp;journal=J.+Environ.+Psychol.&amp;volume=16&amp;pages=221-33&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B74\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kroll</span> <span class=\"reference-given-names\">JH</span>, <span class=\"reference-surname\">Seinfeld</span> <span class=\"reference-given-names\">JH</span>. <span class=\"citation-label\">74.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">42</span>:<span class=\"reference-fpage\">3593–</span><span class=\"reference-lpage\">624</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&amp;author=JH+Kroll&amp;author=JH+Seinfeld&amp;journal=Atmos.+Environ.&amp;volume=42&amp;pages=3593-624&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B75\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">75.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Aggression and violence in the inner city: effects of environment via mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">543–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=543-71&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B76\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">76.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Environment and crime in the inner city: Does vegetation reduce crime?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">343–</span><span class=\"reference-lpage\">67</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=343-67&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B77\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>, <span class=\"reference-surname\">Coley</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Brunson</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">77.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Fertile ground for community: inner-city neighborhood common spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Community Psychol.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">823–</span><span class=\"reference-lpage\">51</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;author=RL+Coley&amp;author=L+Brunson&amp;journal=Am.+J.+Community+Psychol.&amp;volume=26&amp;pages=823-51&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B78\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">78.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Greenspace and obesity: a systematic review of the evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Obes. Rev.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">e183–</span><span class=\"reference-lpage\">89</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Obes.+Rev.&amp;volume=12&amp;pages=e183-89&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B79\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">79.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">118</span>:<span class=\"reference-fpage\">62–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Landsc.+Urban+Plann.&amp;volume=118&amp;pages=62-69&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B80\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lindheim</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Syme</span> <span class=\"reference-given-names\">SL</span>. <span class=\"citation-label\">80.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Environments, people, and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">335–</span><span class=\"reference-lpage\">59</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&amp;author=R+Lindheim&amp;author=SL+Syme&amp;journal=Annu.+Rev.+Public+Health&amp;volume=4&amp;pages=335-59&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B81\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Liu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Mu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Zhu</span> <span class=\"reference-given-names\">Y-G</span>, <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Arens</span> <span class=\"reference-given-names\">NC</span>. <span class=\"citation-label\">81.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Which ornamental plant species effectively remove benzene from indoor air?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">650–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&amp;author=Y-J+Liu&amp;author=Y-J+Mu&amp;author=Y-G+Zhu&amp;author=H+Ding&amp;author=NC+Arens&amp;journal=Atmos.+Environ.&amp;volume=41&amp;pages=650-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B82\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lloyd</span> <span class=\"reference-given-names\">GER</span>, <span class=\"reference-surname\">Chadwick</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mann</span> <span class=\"reference-given-names\">WN</span>. <span class=\"citation-label\">82.\\u2002</span> <span class=\"reference-year\">1978</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Hippocratic Writings</span></span> Harmondsworth: Penguin\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&amp;author=GER+Lloyd&amp;author=J+Chadwick&amp;author=WN+Mann&amp;publication_year=1978&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B83\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lovasi</span> <span class=\"reference-given-names\">GS</span>, <span class=\"reference-surname\">O\\'Neil-Dunne</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Lu</span> <span class=\"reference-given-names\">JW</span>, <span class=\"reference-surname\">Sheehan</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Perzanowski</span> <span class=\"reference-given-names\">MS</span>. <span class=\"citation-label\">83.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Perspect.</span></span> <span class=\"reference-volume\">121</span>:<span class=\"reference-fpage\">494–</span><span class=\"reference-lpage\">500</span> 00e1–6 \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&amp;author=GS+Lovasi&amp;author=JP+O%27Neil-Dunne&amp;author=JW+Lu&amp;author=D+Sheehan&amp;author=MS+Perzanowski&amp;journal=Environ.+Health+Perspect.&amp;volume=121&amp;pages=494-500&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B84\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">84.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Is green space in the living environment associated with people\\'s feelings of social safety?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">1763–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&amp;author=J+Maas&amp;author=P+Spreeuwenberg&amp;author=M+van+Winsum-Westra&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=PP+Groenewegen&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=1763-77&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B85\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SM</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">85.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Social contacts as a possible mechanism behind the relation between green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">586–</span><span class=\"reference-lpage\">95</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&amp;author=J+Maas&amp;author=SM+van+Dillen&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Health+Place&amp;volume=15&amp;pages=586-95&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B86\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Schellevis</span> <span class=\"reference-given-names\">FG</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">86.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Morbidity is related to a green living environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">967–</span><span class=\"reference-lpage\">73</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;author=FG+Schellevis&amp;author=PP+Groenewegen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=63&amp;pages=967-73&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B87\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">87.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Green space, urbanity, and health: How strong is the relation?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">60</span>:<span class=\"reference-fpage\">587–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=60&amp;pages=587-92&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B88\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">88.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">8</span>:<span class=\"reference-fpage\">206</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=P+Spreeuwenberg&amp;author=PP+Groenewegen&amp;journal=BMC+Public+Health&amp;volume=8&amp;pages=206&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B89\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maller</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Townsend</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">St Leger</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Henderson-Wilson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Pryor</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">89.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context</span></span> Melbourne, Aust.: Deakin Univ.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&amp;author=C+Maller&amp;author=M+Townsend&amp;author=L+St+Leger&amp;author=C+Henderson-Wilson&amp;author=A+Pryor&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B90\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCormack</span> <span class=\"reference-given-names\">GR</span>, <span class=\"reference-surname\">Rock</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Toohey</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Hignell</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">90.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">712–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&amp;author=GR+McCormack&amp;author=M+Rock&amp;author=AM+Toohey&amp;author=D+Hignell&amp;journal=Health+Place&amp;volume=16&amp;pages=712-26&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B91\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCurdy</span> <span class=\"reference-given-names\">LE</span>, <span class=\"reference-surname\">Winterbottom</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Mehta</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Roberts</span> <span class=\"reference-given-names\">JR</span>. <span class=\"citation-label\">91.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Using nature and outdoor activity to improve children\\'s health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Curr. Probl. Pediatr. Adolesc. Health Care</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&amp;author=LE+McCurdy&amp;author=KE+Winterbottom&amp;author=SS+Mehta&amp;author=JR+Roberts&amp;journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&amp;volume=40&amp;pages=102-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B92\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">92.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Is physical activity in natural environments better for mental health than physical activity in other environments?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">130–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=91&amp;pages=130-34&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B93\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">93.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Greenspace, urbanity and health: relationships in England. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">61</span>:<span class=\"reference-fpage\">681–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=61&amp;pages=681-83&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B94\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">94.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Effect of exposure to natural environment on health inequalities: an observational population study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">372</span>:<span class=\"reference-fpage\">1655–</span><span class=\"reference-lpage\">60</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=Lancet&amp;volume=372&amp;pages=1655-60&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B95\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitrione</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">95.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Therapeutic responses to natural environments: using gardens to improve health care. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Minn. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&amp;author=S+Mitrione&amp;journal=Minn.+Med.&amp;volume=91&amp;pages=31-34&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B96\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Muñoz</span> <span class=\"reference-given-names\">S-A</span>. <span class=\"citation-label\">96.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Children in the Outdoors: A Literature Review</span></span> Forres, Scotl.: Sustain. Dev. Res. Cent.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&amp;author=S-A+Mu%C3%B1oz&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B97\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nieminen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Martelin</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Koskinen</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Aro</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Alanen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hyyppä</span> <span class=\"reference-given-names\">MT</span>. <span class=\"citation-label\">97.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social capital as a determinant of self-rated health and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Public Health</span></span> <span class=\"reference-volume\">55</span>:<span class=\"reference-fpage\">531–</span><span class=\"reference-lpage\">42</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&amp;author=T+Nieminen&amp;author=T+Martelin&amp;author=S+Koskinen&amp;author=H+Aro&amp;author=E+Alanen&amp;author=MT+Hyypp%C3%A4&amp;journal=Int.+J.+Public+Health&amp;volume=55&amp;pages=531-42&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B98\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Sangster</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Gallis</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">98.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests, Trees and Human Health</span></span> Dordrecht: Springer\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&amp;author=K+Nilsson&amp;author=M+Sangster&amp;author=C+Gallis&amp;author=T+Hartig&amp;author=S+de+Vries&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B99\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">ME</span>, <span class=\"reference-surname\">Berglund</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">99.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Soundscape quality in suburban green areas and city parks. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Acta Acustica United Acustica</span></span> <span class=\"reference-volume\">92</span>:<span class=\"reference-fpage\">903–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&amp;author=ME+Nilsson&amp;author=B+Berglund&amp;journal=Acta+Acustica+United+Acustica&amp;volume=92&amp;pages=903-11&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B100\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>, <span class=\"reference-surname\">Crane</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Stevens</span> <span class=\"reference-given-names\">JC</span>. <span class=\"citation-label\">100.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Air pollution removal by urban trees and shrubs in the United States. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">115–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&amp;author=DJ+Nowak&amp;author=DE+Crane&amp;author=JC+Stevens&amp;journal=Urban+For.+Urban+Green.&amp;volume=4&amp;pages=115-23&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B101\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Olmsted</span> <span class=\"reference-given-names\">FL</span>. <span class=\"citation-label\">101.\\u2002</span> <span class=\"reference-year\">1970 (1870)</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Public Parks and the Enlargement of Towns</span></span> New York: Arno (Cambridge, MA: Riverside)\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&amp;author=FL+Olmsted&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B102\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Orwell</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Burchett</span> <span class=\"reference-given-names\">MD</span>, <span class=\"reference-surname\">Tarran</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Torpy</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">102.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Water Air Soil Poll.</span></span> <span class=\"reference-volume\">177</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&amp;author=RL+Orwell&amp;author=RA+Wood&amp;author=MD+Burchett&amp;author=J+Tarran&amp;author=F+Torpy&amp;journal=Water+Air+Soil+Poll.&amp;volume=177&amp;pages=59-80&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B103\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Paoletti</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Bardelli</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Giovannini</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Pecchioli</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">103.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Air quality impact of an urban park over time. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Procedia Environ. Sci.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">10–</span><span class=\"reference-lpage\">16</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&amp;author=E+Paoletti&amp;author=T+Bardelli&amp;author=G+Giovannini&amp;author=L+Pecchioli&amp;journal=Procedia+Environ.+Sci.&amp;volume=4&amp;pages=10-16&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B104\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Powell</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Paluch</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Blair</span> <span class=\"reference-given-names\">SN</span>. <span class=\"citation-label\">104.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Physical activity for health: What Kind? How much? How Intense? On Top of What?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">349–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&amp;author=KE+Powell&amp;author=AE+Paluch&amp;author=SN+Blair&amp;journal=Annu.+Rev.+Public+Health&amp;volume=32&amp;pages=349-65&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B105\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Peacock</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Sellens</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Griffin</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">105.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The mental and physical health outcomes of green exercise. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Environ. Health Res.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">319–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&amp;author=J+Pretty&amp;author=J+Peacock&amp;author=M+Sellens&amp;author=M+Griffin&amp;journal=Int.+J.+Environ.+Health+Res.&amp;volume=15&amp;pages=319-37&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B106\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Proctor</span> <span class=\"reference-given-names\">JD</span>. <span class=\"citation-label\">106.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> The social construction of nature: relativist accusations, pragmatist and critical realist responses. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Assoc. Am. Geogr.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">352–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&amp;author=JD+Proctor&amp;journal=Ann.+Assoc.+Am.+Geogr.&amp;volume=88&amp;pages=352-76&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B107\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">107.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Gender differences in relationships between urban green space and health in the United Kingdom. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">71</span>:<span class=\"reference-fpage\">568–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=71&amp;pages=568-75&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B108\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Astell-Burt</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">108.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Green cities and health: a question of scale?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">160–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;author=T+Hartig&amp;author=S+de+Vries&amp;author=T+Astell-Burt&amp;author=H+Frumkin&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=66&amp;pages=160-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B109\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Pearce</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kingham</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">109.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Role of physical activity in the relationship between urban green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">127</span>:<span class=\"reference-fpage\">318–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&amp;author=EA+Richardson&amp;author=J+Pearce&amp;author=R+Mitchell&amp;author=S+Kingham&amp;journal=Public+Health&amp;volume=127&amp;pages=318-24&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B110\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rios</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Aiken</span> <span class=\"reference-given-names\">LS</span>, <span class=\"reference-surname\">Zautra</span> <span class=\"reference-given-names\">AJ</span>. <span class=\"citation-label\">110.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Behav. Med.</span></span> <span class=\"reference-volume\">43</span>:<span class=\"reference-fpage\">50–</span><span class=\"reference-lpage\">61</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&amp;author=R+Rios&amp;author=LS+Aiken&amp;author=AJ+Zautra&amp;journal=Ann.+Behav.+Med.&amp;volume=43&amp;pages=50-61&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B111\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rose</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">111.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Sick individuals and sick populations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Epidemiol.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&amp;author=G+Rose&amp;journal=Int.+J.+Epidemiol.&amp;volume=30&amp;pages=427-32&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B112\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sartelet</span> <span class=\"reference-given-names\">KN</span>, <span class=\"reference-surname\">Couvidat</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Seigneur</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roustan</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">112.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Impact of biogenic emissions on air quality over Europe and North America. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">53</span>:<span class=\"reference-fpage\">131–</span><span class=\"reference-lpage\">41</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&amp;author=KN+Sartelet&amp;author=F+Couvidat&amp;author=C+Seigneur&amp;author=Y+Roustan&amp;journal=Atmos.+Environ.&amp;volume=53&amp;pages=131-41&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B113\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Setälä</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Viippola</span> <span class=\"reference-given-names\">V</span>, <span class=\"reference-surname\">Rantalainen</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Pennanen</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Yli-Pelkonen</span> <span class=\"reference-given-names\">V</span>. <span class=\"citation-label\">113.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Does urban vegetation mitigate air pollution in northern conditions?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">183</span>:<span class=\"reference-fpage\">104–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&amp;author=H+Set%C3%A4l%C3%A4&amp;author=V+Viippola&amp;author=AL+Rantalainen&amp;author=A+Pennanen&amp;author=V+Yli-Pelkonen&amp;journal=Environ.+Pollut.&amp;volume=183&amp;pages=104-12&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B114\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Simpson</span> <span class=\"reference-given-names\">JR</span>, <span class=\"reference-surname\">McPherson</span> <span class=\"reference-given-names\">EG</span>. <span class=\"citation-label\">114.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">69–</span><span class=\"reference-lpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&amp;author=JR+Simpson&amp;author=EG+McPherson&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=69-74&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B115\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">115.\\u2002</span> <span class=\"reference-year\">1988</span>. <span class=\"reference-article-title\"> Perception and aesthetics of the urban environment: review of the role of vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">106</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&amp;author=RC+Smardon&amp;journal=Landsc.+Urban+Plann.&amp;volume=15&amp;pages=85-106&amp;publication_year=1988&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B116\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Van Gemerden</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">116.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&amp;author=H+Staats&amp;author=E+Van+Gemerden&amp;author=T+Hartig&amp;journal=Leis.+Sci.&amp;volume=32&amp;pages=401-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B117\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Stigsdotter</span> <span class=\"reference-given-names\">UK</span>, <span class=\"reference-surname\">Ekholm</span> <span class=\"reference-given-names\">O</span>, <span class=\"reference-surname\">Schipperijn</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Toftager</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Kamper-Jørgensen</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Randrup</span> <span class=\"reference-given-names\">TB</span>. <span class=\"citation-label\">117.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">411–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&amp;author=UK+Stigsdotter&amp;author=O+Ekholm&amp;author=J+Schipperijn&amp;author=M+Toftager&amp;author=F+Kamper-J%C3%B8rgensen&amp;author=TB+Randrup&amp;journal=Scand.+J.+Public+Health&amp;volume=38&amp;pages=411-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B118\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sugiyama</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Leslie</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Owen</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">118.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">62</span>:<span class=\"reference-fpage\">e9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&amp;author=T+Sugiyama&amp;author=E+Leslie&amp;author=B+Giles-Corti&amp;author=N+Owen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=62&amp;pages=e9&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B119\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Takano</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Nakamura</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Watanabe</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">119.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">56</span>:<span class=\"reference-fpage\">913–</span><span class=\"reference-lpage\">18</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&amp;author=T+Takano&amp;author=K+Nakamura&amp;author=M+Watanabe&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=56&amp;pages=913-18&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B120\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tallis</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Sinnett</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">120.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">38</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&amp;author=M+Tallis&amp;author=G+Taylor&amp;author=D+Sinnett&amp;author=P+Freer-Smith&amp;journal=Landsc.+Urban+Plann.&amp;volume=103&amp;pages=129-38&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B121\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>. <span class=\"citation-label\">121.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Children with attention deficits concentrate better after walk in the park. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Atten. Disord.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">402–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;journal=J.+Atten.+Disord.&amp;volume=12&amp;pages=402-9&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B122\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">122.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Views of nature and self-discipline: evidence from inner city children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">49–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=J.+Environ.+Psychol.&amp;volume=22&amp;pages=49-63&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B123\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Thompson Coon</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Boddy</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Stein</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Whear</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Depledge</span> <span class=\"reference-given-names\">MH</span>. <span class=\"citation-label\">123.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">1761–</span><span class=\"reference-lpage\">72</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&amp;author=J+Thompson+Coon&amp;author=K+Boddy&amp;author=K+Stein&amp;author=R+Whear&amp;author=J+Barton&amp;author=MH+Depledge&amp;journal=Environ.+Sci.+Technol.&amp;volume=45&amp;pages=1761-72&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B124\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tsunetsugu</span> <span class=\"reference-given-names\">Y</span>, <span class=\"reference-surname\">Park</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Miyazaki</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">124.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Prevent. Med.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">27–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&amp;author=Y+Tsunetsugu&amp;author=B+Park&amp;author=Y+Miyazaki&amp;journal=Environ.+Health+Prevent.+Med.&amp;volume=15&amp;pages=27-37&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B125\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">125.\\u2002</span> <span class=\"reference-year\">1979</span>. <span class=\"reference-article-title\"> Visual landscapes and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Res.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&amp;author=RS+Ulrich&amp;journal=Landsc.+Res.&amp;volume=4&amp;pages=17-23&amp;publication_year=1979&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B126\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">126.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Aesthetic and affective response to natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Human Behaviour and Environment: Advances in Theory and Research.</span></span> Volume\\n<span class=\"reference-volume\">6</span> <span class=\"reference-source\"><span class=\"reference-italic\">Behaviour and the Natural Environment</span></span>, ed. I\\nAltman, JF Wohlwill <span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">125</span> New York: Plenum\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&amp;author=RS+Ulrich&amp;journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&amp;pages=85-125&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B127\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Simons</span> <span class=\"reference-given-names\">RF</span>, <span class=\"reference-surname\">Losito</span> <span class=\"reference-given-names\">BD</span>, <span class=\"reference-surname\">Fiorito</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Miles</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Zelson</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">127.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Stress recovery during exposure to natural and urban environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">201–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&amp;author=RS+Ulrich&amp;author=RF+Simons&amp;author=BD+Losito&amp;author=E+Fiorito&amp;author=MA+Miles&amp;author=M+Zelson&amp;journal=J.+Environ.+Psychol.&amp;volume=11&amp;pages=201-30&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B128\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Cauwenberg</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">De Bourdeaudhuij</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">De Meester</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Van Dyck</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Salmon</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">128.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Relationship between the physical environment and physical activity in older adults: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">458–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&amp;author=J+Van+Cauwenberg&amp;author=I+De+Bourdeaudhuij&amp;author=F+De+Meester&amp;author=D+Van+Dyck&amp;author=J+Salmon&amp;journal=Health+Place&amp;volume=17&amp;pages=458-69&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B129\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Custers</span> <span class=\"reference-given-names\">MHG</span>. <span class=\"citation-label\">129.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Gardening promotes neuroendocrine and affective restoration from stress. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Health Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&amp;author=AE+Van+den+Berg&amp;author=MHG+Custers&amp;journal=J.+Health+Psychol.&amp;volume=16&amp;pages=3-11&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B130\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">130.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Green space as a buffer between stressful life events and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">70</span>:<span class=\"reference-fpage\">1203–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&amp;author=AE+Van+den+Berg&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Soc.+Sci.+Med.&amp;volume=70&amp;pages=1203-10&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B131\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>. <span class=\"citation-label\">131.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health</span></span> <span class=\"reference-volume\">9</span>:<span class=\"reference-fpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&amp;author=AE+Van+den+Berg&amp;author=M+van+Winsum-Westra&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;journal=Environ.+Health&amp;volume=9&amp;pages=74&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B132\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Herzele</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Podesta</span> <span class=\"reference-given-names\">MTC</span>, <span class=\"reference-surname\">van Zon</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">132.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: the challenge of linking practice and research. </span> See Ref. 98 <span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B133\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Montarzino</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">133.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> The childhood factor: adult visits to green places and the significance of childhood experience. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">111–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&amp;author=C+Ward+Thompson&amp;author=P+Aspinall&amp;author=A+Montarzino&amp;journal=Environ.+Behav.&amp;volume=40&amp;pages=111-43&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B134\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roe</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Clow</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Miller</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">134.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">105</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">29</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&amp;author=C+Ward+Thompson&amp;author=J+Roe&amp;author=P+Aspinall&amp;author=R+Mitchell&amp;author=A+Clow&amp;author=D+Miller&amp;journal=Landsc.+Urban+Plann.&amp;volume=105&amp;pages=221-29&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B135\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">135.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Nearby nature—a buffer of life stress among rural children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">311–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&amp;author=NM+Wells&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=35&amp;pages=311-30&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B136\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Lekies</span> <span class=\"reference-given-names\">KS</span>. <span class=\"citation-label\">136.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Nature and the life course: pathways from childhood nature experiences to adult environmentalism. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Child. Youth Environ.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&amp;author=NM+Wells&amp;author=KS+Lekies&amp;journal=Child.+Youth+Environ.&amp;volume=16&amp;pages=1-24&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B137\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Whitelaw</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">137.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Crit. Public Health</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&amp;author=S+Whitelaw&amp;journal=Crit.+Public+Health&amp;volume=22&amp;pages=427-40&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B138\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">138.\\u2002</span><span class=\"reference-collab\">WHO (World Health Organ.)</span> <span class=\"reference-year\">1946</span>. <span class=\"reference-article-title\"> <span class=\"reference-italic\">Preamble to the Constitution of the World Health Organization</span> as adopted by the International Health Conference. </span> New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&amp;publication_year=1946&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B139\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wilson</span> <span class=\"reference-given-names\">SJ</span>, <span class=\"reference-surname\">Lipsey</span> <span class=\"reference-given-names\">MW</span>. <span class=\"citation-label\">139.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eval. Program Plann.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&amp;author=SJ+Wilson&amp;author=MW+Lipsey&amp;journal=Eval.+Program+Plann.&amp;volume=23&amp;pages=1-12&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B140\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Yoo</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Kwon</span> <span class=\"reference-given-names\">YJ</span>, <span class=\"reference-surname\">Son</span> <span class=\"reference-given-names\">KC</span>, <span class=\"reference-surname\">Kays</span> <span class=\"reference-given-names\">SJ</span>. <span class=\"citation-label\">140.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Am. Soc. Hort. Sci.</span></span> <span class=\"reference-volume\">131</span>:<span class=\"reference-fpage\">452–</span><span class=\"reference-lpage\">58</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&amp;author=MH+Yoo&amp;author=YJ+Kwon&amp;author=KC+Son&amp;author=SJ+Kays&amp;journal=J.+Am.+Soc.+Hort.+Sci.&amp;volume=131&amp;pages=452-58&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B141\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Zick</span> <span class=\"reference-given-names\">CD</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">KR</span>, <span class=\"reference-surname\">Kowaleski-Jones</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Uno</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Merrill</span> <span class=\"reference-given-names\">BJ</span>. <span class=\"citation-label\">141.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Harvesting more than vegetables: the potential weight control benefits of community gardening. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">e1–</span><span class=\"reference-lpage\">6</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&amp;author=CD+Zick&amp;author=KR+Smith&amp;author=L+Kowaleski-Jones&amp;author=C+Uno&amp;author=BJ+Merrill&amp;journal=Am.+J.+Public+Health&amp;volume=103&amp;pages=e1-6&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li></ol></span><div class=\"clearer\">&nbsp;</div></div>\\n</div>\\n\\n<div id=\"article-level-0-figs-and-tables\" class=\"bm\">\\n\\n</div>\\n\\n<div id=\"article-level-0-end-metadata\" class=\"fm\">\\n\\n</div></div></div>\\n\\n</div>\\n<div id=\"referenceContainer\" class=\"references hidden-js-div tabbedsection tab-pane\">\\n<div id=\"referencedetails\">\\n<template id=\"js-morelikethis-link\"></template>\\n<template id=\"js-webofscience-link\" class=\"externallink\"></template>\\n<template id=\"js-pubmed-link\"></template>\\n<p class=\"description\"><span class=\"tl-main-part\">Literature Cited</span></p>\\n<ol id=\"articlereference\" class=\"articlereference-vancouver\">\\n<li class=\"refbody\" id=\"ref-B1\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Akbari</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Kurn</span> <span class=\"reference-given-names\">DM</span>, <span class=\"reference-surname\">Bretz</span> <span class=\"reference-given-names\">SE</span>, <span class=\"reference-surname\">Hanford</span> <span class=\"reference-given-names\">JW</span>. <span class=\"citation-label\">1.\\u2002</span> <span class=\"reference-year\">1997</span>. <span class=\"reference-article-title\"> Peak power and cooling energy savings of shade trees. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Energy Build.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">139–</span><span class=\"reference-lpage\">48</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&amp;author=H+Akbari&amp;author=DM+Kurn&amp;author=SE+Bretz&amp;author=JW+Hanford&amp;journal=Energy+Build.&amp;volume=25&amp;pages=139-48&amp;publication_year=1997&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B2\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Annerstedt</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Währborg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">2.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Nature-assisted therapy: systematic review of controlled and observational studies. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">39</span>:<span class=\"reference-fpage\">371–</span><span class=\"reference-lpage\">88</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&amp;author=M+Annerstedt&amp;author=P+W%C3%A4hrborg&amp;journal=Scand.+J.+Public+Health&amp;volume=39&amp;pages=371-88&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B3\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">3.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3947–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&amp;author=J+Barton&amp;author=J+Pretty&amp;journal=Environ.+Sci.+Technol.&amp;volume=44&amp;pages=3947-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B4\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Baum</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Ziersch</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Zhang</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Osborne</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">4.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">925–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&amp;author=FE+Baum&amp;author=AM+Ziersch&amp;author=G+Zhang&amp;author=K+Osborne&amp;journal=Health+Place&amp;volume=15&amp;pages=925-34&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B5\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bauman</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Reis</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">JC</span>, <span class=\"reference-surname\">Loos</span> <span class=\"reference-given-names\">RJ</span>, <span class=\"reference-surname\">Martin</span> <span class=\"reference-given-names\">BW</span>. <span class=\"citation-label\">5.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Correlates of physical activity: Why are some people physically active and others not?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">380</span>:<span class=\"reference-fpage\">258–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&amp;author=AE+Bauman&amp;author=RS+Reis&amp;author=JF+Sallis&amp;author=JC+Wells&amp;author=RJ+Loos&amp;author=BW+Martin&amp;journal=Lancet&amp;volume=380&amp;pages=258-71&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B6\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beck</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Meyers</span> <span class=\"reference-given-names\">NM</span>. <span class=\"citation-label\">6.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Health enhancement and companion animal ownership. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">247–</span><span class=\"reference-lpage\">57</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&amp;author=AM+Beck&amp;author=NM+Meyers&amp;journal=Annu.+Rev.+Public+Health&amp;volume=17&amp;pages=247-57&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B7\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beckett</span> <span class=\"reference-given-names\">KP</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">PH</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">7.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> The capture of particulate pollution by trees at five contrasting urban sites. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Arboric. J.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">209–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&amp;author=KP+Beckett&amp;author=PH+Freer-Smith&amp;author=G+Taylor&amp;journal=Arboric.+J.&amp;volume=24&amp;pages=209-30&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B8\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bedimo-Rung</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Mowen</span> <span class=\"reference-given-names\">AJ</span>, <span class=\"reference-surname\">Cohen</span> <span class=\"reference-given-names\">DA</span>. <span class=\"citation-label\">8.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The significance of parks to physical activity and public health: a conceptual model. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">159–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&amp;author=AL+Bedimo-Rung&amp;author=AJ+Mowen&amp;author=DA+Cohen&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=159-68&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B9\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Benjamin</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Winer</span> <span class=\"reference-given-names\">AM</span>. <span class=\"citation-label\">9.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Estimating the ozone-forming potential of urban trees and shrubs. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">53–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&amp;author=MT+Benjamin&amp;author=AM+Winer&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=53-68&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B10\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bize</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Johnson</span> <span class=\"reference-given-names\">JA</span>, <span class=\"reference-surname\">Plotnikoff</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">10.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Physical activity level and health-related quality of life in the general adult population: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Prev. Med.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">15</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&amp;author=R+Bize&amp;author=JA+Johnson&amp;author=RC+Plotnikoff&amp;journal=Prev.+Med.&amp;volume=45&amp;pages=401-15&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B11\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">LM</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">11.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> A systematic review of evidence for the added benefits to health of exposure to natural environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">10</span>:<span class=\"reference-fpage\">456</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&amp;author=DE+Bowler&amp;author=LM+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=BMC+Public+Health&amp;volume=10&amp;pages=456&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B12\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">12.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Urban greening to cool towns and cities: a systematic review of the empirical evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">97</span>:<span class=\"reference-fpage\">147–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&amp;author=DE+Bowler&amp;author=L+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=Landsc.+Urban+Plann.&amp;volume=97&amp;pages=147-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B13\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brack</span> <span class=\"reference-given-names\">CL</span>. <span class=\"citation-label\">13.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollution mitigation and carbon sequestration by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">116</span>:<span class=\"reference-fpage\">S195–</span><span class=\"reference-lpage\">200</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&amp;author=CL+Brack&amp;journal=Environ.+Pollut.&amp;volume=116&amp;pages=S195-200&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B14\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Branas</span> <span class=\"reference-given-names\">CC</span>, <span class=\"reference-surname\">Cheney</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">MacDonald</span> <span class=\"reference-given-names\">JM</span>, <span class=\"reference-surname\">Tam</span> <span class=\"reference-given-names\">VW</span>, <span class=\"reference-surname\">Jackson</span> <span class=\"reference-given-names\">TD</span>, <span class=\"reference-surname\">Ten Have</span> <span class=\"reference-given-names\">TR</span>. <span class=\"citation-label\">14.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> A difference-in-differences analysis of health, safety, and greening vacant urban space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Epidemiol.</span></span> <span class=\"reference-volume\">174</span>:<span class=\"reference-fpage\">1296–</span><span class=\"reference-lpage\">306</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&amp;author=CC+Branas&amp;author=RA+Cheney&amp;author=JM+MacDonald&amp;author=VW+Tam&amp;author=TD+Jackson&amp;author=TR+Ten+Have&amp;journal=Am.+J.+Epidemiol.&amp;volume=174&amp;pages=1296-306&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B15\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bratman</span> <span class=\"reference-given-names\">GN</span>, <span class=\"reference-surname\">Hamilton</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Daily</span> <span class=\"reference-given-names\">GC</span>. <span class=\"citation-label\">15.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The impacts of nature experience on human cognitive function and mental health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. N.Y. Acad. Sci.</span></span> <span class=\"reference-volume\">1249</span>:<span class=\"reference-fpage\">118–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&amp;author=GN+Bratman&amp;author=JP+Hamilton&amp;author=GC+Daily&amp;journal=Ann.+N.Y.+Acad.+Sci.&amp;volume=1249&amp;pages=118-36&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B16\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bringslimark</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>. <span class=\"citation-label\">16.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> The psychological benefits of indoor plants: a critical review of the experimental literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">422–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&amp;author=T+Bringslimark&amp;author=T+Hartig&amp;author=GG+Patil&amp;journal=J.+Environ.+Psychol.&amp;volume=29&amp;pages=422-33&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B17\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Broekhuizen</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">SI</span>, <span class=\"reference-surname\">Pierik</span> <span class=\"reference-given-names\">FH</span>. <span class=\"citation-label\">17.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Aging in a Green Living Environment: A Systematic Review of the Literature.</span></span> TNO rep. R10154 Leiden: TNO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&amp;author=K+Broekhuizen&amp;author=SI+de+Vries&amp;author=FH+Pierik&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B18\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brooks</span> <span class=\"reference-given-names\">GD</span>, <span class=\"reference-surname\">Bush</span> <span class=\"reference-given-names\">RK</span>. <span class=\"citation-label\">18.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Allergens and other factors important in atopic disease. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Patterson\\'s Allergic Diseases</span></span> LC Grammer, PA Greenberger <span class=\"reference-fpage\">73–</span><span class=\"reference-lpage\">103</span> Philadelphia: Lippincott, Williams &amp; Wilkins, 7th ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&amp;author=GD+Brooks&amp;author=RK+Bush&amp;journal=Patterson%27s+Allergic+Diseases&amp;pages=73-103&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B19\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cariñanos</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Casares-Porcel</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">19.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">101</span>:<span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">14</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&amp;author=P+Cari%C3%B1anos&amp;author=M+Casares-Porcel&amp;journal=Landsc.+Urban+Plann.&amp;volume=101&amp;pages=205-14&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B20\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Chameides</span> <span class=\"reference-given-names\">WL</span>, <span class=\"reference-surname\">Lindsay</span> <span class=\"reference-given-names\">RW</span>, <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Kiang</span> <span class=\"reference-given-names\">CS</span>. <span class=\"citation-label\">20.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-article-title\"> The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">241</span>:<span class=\"reference-fpage\">1473–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&amp;author=WL+Chameides&amp;author=RW+Lindsay&amp;author=J+Richardson&amp;author=CS+Kiang&amp;journal=Science&amp;volume=241&amp;pages=1473-75&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B21\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cimprich</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">21.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Development of an intervention to restore attention in cancer patients. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Cancer Nurs.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">83–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&amp;author=B+Cimprich&amp;journal=Cancer+Nurs.&amp;volume=16&amp;pages=83-92&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B22\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Colfer</span> <span class=\"reference-given-names\">CJP</span>, <span class=\"reference-surname\">Sheil</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Kishi</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">22.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests and Human Health: Assessing the Evidence</span></span> Bogor, Indones.: Cent. Int. For. Res <a target=\"xrefwindow\" href=\"http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf\"><span class=\"reference-bold\">http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&amp;author=CJP+Colfer&amp;author=D+Sheil&amp;author=M+Kishi&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B23\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Day</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">23.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Plan Educ. Res.</span></span> <span class=\"reference-volume\">19</span>:<span class=\"reference-fpage\">265–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&amp;author=LL+Day&amp;journal=J.+Plan+Educ.+Res.&amp;volume=19&amp;pages=265-75&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B24\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Claßen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Eigenheer-Hug</span> <span class=\"reference-given-names\">S-M</span>, <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">24.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Contributions of natural environments to physical activity. </span> See Ref. 98 <span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&amp;author=S+de+Vries&amp;author=T+Cla%C3%9Fen&amp;author=S-M+Eigenheer-Hug&amp;author=K+Korpela&amp;author=J+Maas&amp;pages=205-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B25\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">25.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Streetscape greenery and health: stress, social cohesion and physical activity as mediators. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">94</span>:<span class=\"reference-fpage\">26–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Soc.+Sci.+Med.&amp;volume=94&amp;pages=26-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B26\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">26.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">1717–</span><span class=\"reference-lpage\">31</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&amp;author=S+de+Vries&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Environ.+Plann.+A&amp;volume=35&amp;pages=1717-31&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B27\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">DellaValle</span> <span class=\"reference-given-names\">CT</span>, <span class=\"reference-surname\">Triche</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Leaderer</span> <span class=\"reference-given-names\">BP</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">ML</span>. <span class=\"citation-label\">27.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Epidemiology</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">55–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&amp;author=CT+DellaValle&amp;author=EW+Triche&amp;author=BP+Leaderer&amp;author=ML+Bell&amp;journal=Epidemiology&amp;volume=23&amp;pages=55-63&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B28\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Den Hertog</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Bronkhorst</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Moerman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Van Wilgenburg</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">28.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit</span> [<span class=\"reference-italic\">The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity</span>].</span> Amsterdam: EMGO Inst.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&amp;author=F+Den+Hertog&amp;author=M+Bronkhorst&amp;author=M+Moerman&amp;author=R+Van+Wilgenburg&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B29\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Kerr</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Lee</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Rosenberg</span> <span class=\"reference-given-names\">DE</span>. <span class=\"citation-label\">29.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Neighborhood environment and physical activity among youth: a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">442–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&amp;author=D+Ding&amp;author=JF+Sallis&amp;author=J+Kerr&amp;author=S+Lee&amp;author=DE+Rosenberg&amp;journal=Am.+J.+Prev.+Med.&amp;volume=41&amp;pages=442-55&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B30\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Domm</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Drew</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Greene</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Ripley</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Tordesillas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">30.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Recommended urban forest mixtures to optimize selected environmental benefits. </span> <span class=\"reference-source\"><span class=\"reference-italic\">EnviroNews: Int. Soc. Environ. Bot.</span></span> <span class=\"reference-volume\">14</span>:<span class=\"reference-fpage\">7–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&amp;author=J+Domm&amp;author=R+Drew&amp;author=A+Greene&amp;author=E+Ripley&amp;author=R+Smardon&amp;author=J+Tordesillas&amp;journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&amp;volume=14&amp;pages=7-10&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B31\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Donovan</span> <span class=\"reference-given-names\">GH</span>, <span class=\"reference-surname\">Prestemon</span> <span class=\"reference-given-names\">JP</span>. <span class=\"citation-label\">31.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The effect of trees on crime in Portland, Oregon. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&amp;author=GH+Donovan&amp;author=JP+Prestemon&amp;journal=Environ.+Behav.&amp;volume=44&amp;pages=3-30&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B32\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Eid</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Overman</span> <span class=\"reference-given-names\">HG</span>, <span class=\"reference-surname\">Puga</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Turner</span> <span class=\"reference-given-names\">MA</span>. <span class=\"citation-label\">32.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Fat city: questioning the relationship between urban sprawl and obesity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Urban Econ.</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">385–</span><span class=\"reference-lpage\">404</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&amp;author=J+Eid&amp;author=HG+Overman&amp;author=D+Puga&amp;author=MA+Turner&amp;journal=J.+Urban+Econ.&amp;volume=63&amp;pages=385-404&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B33\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Engel</span> <span class=\"reference-given-names\">GL</span>. <span class=\"citation-label\">33.\\u2002</span> <span class=\"reference-year\">1977</span>. <span class=\"reference-article-title\"> The need for a new medical model: a challenge for biomedicine. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">196</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&amp;author=GL+Engel&amp;journal=Science&amp;volume=196&amp;pages=129-36&amp;publication_year=1977&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B34\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Escobedo</span> <span class=\"reference-given-names\">FJ</span>, <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>. <span class=\"citation-label\">34.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Spatial heterogeneity and air pollution removal by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">90</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&amp;author=FJ+Escobedo&amp;author=DJ+Nowak&amp;journal=Landsc.+Urban+Plann.&amp;volume=90&amp;pages=102-10&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B35\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ferdinand</span> <span class=\"reference-given-names\">AO</span>, <span class=\"reference-surname\">Sen</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Rahurkar</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Engler</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Menachemi</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">35.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The relationship between built environments and physical activity: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">102</span>:<span class=\"reference-fpage\">e7–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&amp;author=AO+Ferdinand&amp;author=B+Sen&amp;author=S+Rahurkar&amp;author=S+Engler&amp;author=N+Menachemi&amp;journal=Am.+J.+Public+Health&amp;volume=102&amp;pages=e7-13&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B36\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Forrest</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kearns</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">36.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Social cohesion, social capital and the neighbourhood. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban Stud.</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">2125–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&amp;author=R+Forrest&amp;author=A+Kearns&amp;journal=Urban+Stud.&amp;volume=38&amp;pages=2125-43&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B37\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fowler</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">37.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollutant deposition and uptake by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Air Pollution and Plant Life</span></span> JNB Bell, M Treshow <span class=\"reference-fpage\">43–</span><span class=\"reference-lpage\">67</span> New York: Wiley, 2nd ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&amp;author=D+Fowler&amp;journal=Air+Pollution+and+Plant+Life&amp;pages=43-67&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B38\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">38.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Creating sense of community: the role of public space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&amp;author=J+Francis&amp;author=B+Giles-Corti&amp;author=L+Wood&amp;author=M+Knuiman&amp;journal=J.+Environ.+Psychol.&amp;volume=32&amp;pages=401-9&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B39\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">LJ</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">39.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">74</span>:<span class=\"reference-fpage\">1570–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&amp;author=J+Francis&amp;author=LJ+Wood&amp;author=M+Knuiman&amp;author=B+Giles-Corti&amp;journal=Soc.+Sci.+Med.&amp;volume=74&amp;pages=1570-77&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B40\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fraser</span> <span class=\"reference-given-names\">SDS</span>, <span class=\"reference-surname\">Lock</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">40.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Cycling for transport and public health: a systematic review of the effect of the environment on cycling. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eur. J. Public Health</span></span> <span class=\"reference-volume\">21</span>:<span class=\"reference-fpage\">738–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&amp;author=SDS+Fraser&amp;author=K+Lock&amp;journal=Eur.+J.+Public+Health&amp;volume=21&amp;pages=738-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B41\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frost</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Goins</span> <span class=\"reference-given-names\">RT</span>, <span class=\"reference-surname\">Hunter</span> <span class=\"reference-given-names\">RH</span>, <span class=\"reference-surname\">Hooker</span> <span class=\"reference-given-names\">SP</span>, <span class=\"reference-surname\">Bryant</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">41.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Effects of the built environment on physical activity of adults living in rural settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Health Promot.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">267–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&amp;author=SS+Frost&amp;author=RT+Goins&amp;author=RH+Hunter&amp;author=SP+Hooker&amp;author=LL+Bryant&amp;journal=Am.+J.+Health+Promot.&amp;volume=24&amp;pages=267-83&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B42\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">42.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Beyond toxicity: human health and the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">234–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=20&amp;pages=234-40&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B43\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">43.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The evidence of nature and the nature of evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">196–</span><span class=\"reference-lpage\">97</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=44&amp;pages=196-97&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B44\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Galea</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Vlahov</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">44.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Urban health: evidence, challenges, and directions. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">341–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&amp;author=S+Galea&amp;author=D+Vlahov&amp;journal=Annu.+Rev.+Public+Health&amp;volume=26&amp;pages=341-65&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B45\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gatersleben</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Andrews</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">45.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> When walking in nature is not restorative—the role of prospect and refuge. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">91–</span><span class=\"reference-lpage\">101</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&amp;author=B+Gatersleben&amp;author=M+Andrews&amp;journal=Health+Place&amp;volume=20&amp;pages=91-101&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B46\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Broomhall</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Collins</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Douglas</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">46.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Increasing walking: How important is distance to, attractiveness, and size of public open space?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&amp;author=B+Giles-Corti&amp;author=MH+Broomhall&amp;author=M+Knuiman&amp;author=C+Collins&amp;author=K+Douglas&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=169-76&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B47\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gonzalez</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>, <span class=\"reference-surname\">Martinsen</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Kirkevold</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">47.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Therapeutic horticulture in clinical depression: a prospective study of active components. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Adv. Nurs.</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">2002–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&amp;author=MT+Gonzalez&amp;author=T+Hartig&amp;author=GG+Patil&amp;author=EW+Martinsen&amp;author=M+Kirkevold&amp;journal=J.+Adv.+Nurs.&amp;volume=66&amp;pages=2002-13&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B48\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">48.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Nature experience in transactional perspective. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&amp;author=T+Hartig&amp;journal=Landsc.+Urban+Plann.&amp;volume=25&amp;pages=17-36&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B49\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>, <span class=\"reference-surname\">Jamner</span> <span class=\"reference-given-names\">LD</span>, <span class=\"reference-surname\">Davis</span> <span class=\"reference-given-names\">DS</span>, <span class=\"reference-surname\">Gärling</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">49.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Tracking restoration in natural and urban field settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">109–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&amp;author=T+Hartig&amp;author=GW+Evans&amp;author=LD+Jamner&amp;author=DS+Davis&amp;author=T+G%C3%A4rling&amp;journal=J.+Environ.+Psychol.&amp;volume=23&amp;pages=109-23&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B50\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Fransson</span> <span class=\"reference-given-names\">U</span>. <span class=\"citation-label\">50.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">82–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&amp;author=T+Hartig&amp;author=U+Fransson&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=82-96&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B51\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Kylin</span> <span class=\"reference-given-names\">C</span>. <span class=\"citation-label\">51.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Residence in the social ecology of stress and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Soc. Iss.</span></span> <span class=\"reference-volume\">59</span>:<span class=\"reference-fpage\">611–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&amp;author=T+Hartig&amp;author=G+Johansson&amp;author=C+Kylin&amp;journal=J.+Soc.+Iss.&amp;volume=59&amp;pages=611-36&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B52\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Mang</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">52.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Restorative effects of natural environment experiences. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&amp;author=T+Hartig&amp;author=M+Mang&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=23&amp;pages=3-26&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B53\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Hagerhall</span> <span class=\"reference-given-names\">CM</span>, <span class=\"reference-surname\">Tomalak</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">53.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: psychological, social and cultural processes. </span> See Ref. 98 <span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B54\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">54.\\u2002</span><span class=\"reference-collab\">Health Counc. Neth</span> <span class=\"reference-year\">2004</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being.</span></span> The Hague: Health Counc. Neth., RMNO <a target=\"xrefwindow\" href=\"http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf\"><span class=\"reference-bold\">http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&amp;publication_year=2004&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B55\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Heinen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">van Wee</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Maat</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">55.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Commuting by bicycle: an overview of the literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Transp. Rev.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&amp;author=E+Heinen&amp;author=B+van+Wee&amp;author=K+Maat&amp;journal=Transp.+Rev.&amp;volume=30&amp;pages=59-96&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B56\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hillsdon</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Panter</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Foster</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">56.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The relationship between access and quality of urban green space with population physical activity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">120</span>:<span class=\"reference-fpage\">1127–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&amp;author=M+Hillsdon&amp;author=J+Panter&amp;author=C+Foster&amp;author=A+Jones&amp;journal=Public+Health&amp;volume=120&amp;pages=1127-32&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B57\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Holt-Lunstad</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">TB</span>, <span class=\"reference-surname\">Layton</span> <span class=\"reference-given-names\">JB</span>. <span class=\"citation-label\">57.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social relationships and mortality risk: a meta-analytic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">PLoS Med.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">e1000316</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&amp;author=J+Holt-Lunstad&amp;author=TB+Smith&amp;author=JB+Layton&amp;journal=PLoS+Med.&amp;volume=7&amp;pages=e1000316&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B58\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Home</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hunziker</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">58.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Psychosocial outcomes as motivations for visiting nearby urban green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">34</span>:<span class=\"reference-fpage\">350–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&amp;author=R+Home&amp;author=M+Hunziker&amp;author=N+Bauer&amp;journal=Leis.+Sci.&amp;volume=34&amp;pages=350-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B59\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Islam</span> <span class=\"reference-given-names\">MN</span>, <span class=\"reference-surname\">Rahman</span> <span class=\"reference-given-names\">K-S</span>, <span class=\"reference-surname\">Bahar</span> <span class=\"reference-given-names\">MM</span>, <span class=\"reference-surname\">Habib</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Ando</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hattori</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">59.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Pollution attenuation by roadside greenbelt in and around urban areas. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">460–</span><span class=\"reference-lpage\">64</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&amp;author=MN+Islam&amp;author=K-S+Rahman&amp;author=MM+Bahar&amp;author=MA+Habib&amp;author=K+Ando&amp;author=N+Hattori&amp;journal=Urban+For.+Urban+Green.&amp;volume=11&amp;pages=460-64&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B60\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jahncke</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Hygge</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Halin</span> <span class=\"reference-given-names\">N</span>, <span class=\"reference-surname\">Green</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Dimberg</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">60.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Open-plan office noise: cognitive performance and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">31</span>:<span class=\"reference-fpage\">373–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&amp;author=H+Jahncke&amp;author=S+Hygge&amp;author=N+Halin&amp;author=AM+Green&amp;author=K+Dimberg&amp;journal=J.+Environ.+Psychol.&amp;volume=31&amp;pages=373-82&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B61\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Janssen</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">LeBlanc</span> <span class=\"reference-given-names\">AG</span>. <span class=\"citation-label\">61.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Behav. Nutr. Phys. Act.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&amp;author=I+Janssen&amp;author=AG+LeBlanc&amp;journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&amp;volume=7&amp;pages=40&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B62\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Fors</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Lindgren</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Wiström</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">62.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Perceived personal safety in relation to urban woodland vegetation—a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&amp;author=M+Jansson&amp;author=H+Fors&amp;author=T+Lindgren&amp;author=B+Wistr%C3%B6m&amp;journal=Urban+For.+Urban+Green.&amp;volume=12&amp;pages=127-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B63\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jim</span> <span class=\"reference-given-names\">CY</span>, <span class=\"reference-surname\">Chen</span> <span class=\"reference-given-names\">WY</span>. <span class=\"citation-label\">63.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Manag.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">665–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&amp;author=CY+Jim&amp;author=WY+Chen&amp;journal=J.+Environ.+Manag.&amp;volume=88&amp;pages=665-76&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B64\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">64.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Psychological benefits of walking: moderation by company and outdoor environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Appl. Psychol. Health Well-Being</span></span> <span class=\"reference-volume\">3</span>:<span class=\"reference-fpage\">261–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&amp;author=M+Johansson&amp;author=T+Hartig&amp;author=H+Staats&amp;journal=Appl.+Psychol.+Health+Well-Being&amp;volume=3&amp;pages=261-80&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B65\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaczynski</span> <span class=\"reference-given-names\">AT</span>, <span class=\"reference-surname\">Henderson</span> <span class=\"reference-given-names\">KA</span>. <span class=\"citation-label\">65.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Environmental correlates of physical activity: a review of evidence about parks and recreation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">315–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&amp;author=AT+Kaczynski&amp;author=KA+Henderson&amp;journal=Leis.+Sci.&amp;volume=29&amp;pages=315-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B66\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">66.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> The role of nature in the context of the workplace. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">193–</span><span class=\"reference-lpage\">201</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&amp;author=R+Kaplan&amp;journal=Landsc.+Urban+Plann.&amp;volume=26&amp;pages=193-201&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B67\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">67.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-source\"><span class=\"reference-italic\">The Experience of Nature: A Psychological Perspective</span></span> New York: Cambridge Univ. Press\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&amp;author=R+Kaplan&amp;author=S+Kaplan&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B68\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">68.\\u2002</span> <span class=\"reference-year\">1995</span>. <span class=\"reference-article-title\"> The restorative benefits of nature: toward an integrative framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&amp;author=S+Kaplan&amp;journal=J.+Environ.+Psychol.&amp;volume=15&amp;pages=169-82&amp;publication_year=1995&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B69\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">69.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Meditation, restoration, and the management of mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">480–</span><span class=\"reference-lpage\">506</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&amp;author=S+Kaplan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=480-506&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B70\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Karl</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Harley</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Emmons</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Thornton</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Guenther</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">70.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">330</span>:<span class=\"reference-fpage\">816–</span><span class=\"reference-lpage\">19</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&amp;author=T+Karl&amp;author=P+Harley&amp;author=L+Emmons&amp;author=B+Thornton&amp;author=A+Guenther&amp;journal=Science&amp;volume=330&amp;pages=816-19&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B71\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaźmierczak</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">71.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The contribution of local parks to neighbourhood social ties. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">109</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">44</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&amp;author=A+Ka%C5%BAmierczak&amp;journal=Landsc.+Urban+Plann.&amp;volume=109&amp;pages=31-44&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B72\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Knopf</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">72.\\u2002</span> <span class=\"reference-year\">1987</span>. <span class=\"reference-article-title\"> Human behavior, cognition, and affect in the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Handbook of Environmental Psychology</span></span> D Stokols, I Altman <span class=\"reference-fpage\">783–</span><span class=\"reference-lpage\">825</span> New York: Wiley\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&amp;author=RC+Knopf&amp;journal=Handbook+of+Environmental+Psychology&amp;pages=783-825&amp;publication_year=1987&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B73\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">73.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Restorative qualities of favorite places. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&amp;author=K+Korpela&amp;author=T+Hartig&amp;journal=J.+Environ.+Psychol.&amp;volume=16&amp;pages=221-33&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B74\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kroll</span> <span class=\"reference-given-names\">JH</span>, <span class=\"reference-surname\">Seinfeld</span> <span class=\"reference-given-names\">JH</span>. <span class=\"citation-label\">74.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">42</span>:<span class=\"reference-fpage\">3593–</span><span class=\"reference-lpage\">624</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&amp;author=JH+Kroll&amp;author=JH+Seinfeld&amp;journal=Atmos.+Environ.&amp;volume=42&amp;pages=3593-624&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B75\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">75.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Aggression and violence in the inner city: effects of environment via mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">543–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=543-71&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B76\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">76.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Environment and crime in the inner city: Does vegetation reduce crime?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">343–</span><span class=\"reference-lpage\">67</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=343-67&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B77\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>, <span class=\"reference-surname\">Coley</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Brunson</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">77.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Fertile ground for community: inner-city neighborhood common spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Community Psychol.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">823–</span><span class=\"reference-lpage\">51</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;author=RL+Coley&amp;author=L+Brunson&amp;journal=Am.+J.+Community+Psychol.&amp;volume=26&amp;pages=823-51&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B78\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">78.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Greenspace and obesity: a systematic review of the evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Obes. Rev.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">e183–</span><span class=\"reference-lpage\">89</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Obes.+Rev.&amp;volume=12&amp;pages=e183-89&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B79\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">79.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">118</span>:<span class=\"reference-fpage\">62–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Landsc.+Urban+Plann.&amp;volume=118&amp;pages=62-69&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B80\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lindheim</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Syme</span> <span class=\"reference-given-names\">SL</span>. <span class=\"citation-label\">80.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Environments, people, and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">335–</span><span class=\"reference-lpage\">59</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&amp;author=R+Lindheim&amp;author=SL+Syme&amp;journal=Annu.+Rev.+Public+Health&amp;volume=4&amp;pages=335-59&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B81\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Liu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Mu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Zhu</span> <span class=\"reference-given-names\">Y-G</span>, <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Arens</span> <span class=\"reference-given-names\">NC</span>. <span class=\"citation-label\">81.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Which ornamental plant species effectively remove benzene from indoor air?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">650–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&amp;author=Y-J+Liu&amp;author=Y-J+Mu&amp;author=Y-G+Zhu&amp;author=H+Ding&amp;author=NC+Arens&amp;journal=Atmos.+Environ.&amp;volume=41&amp;pages=650-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B82\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lloyd</span> <span class=\"reference-given-names\">GER</span>, <span class=\"reference-surname\">Chadwick</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mann</span> <span class=\"reference-given-names\">WN</span>. <span class=\"citation-label\">82.\\u2002</span> <span class=\"reference-year\">1978</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Hippocratic Writings</span></span> Harmondsworth: Penguin\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&amp;author=GER+Lloyd&amp;author=J+Chadwick&amp;author=WN+Mann&amp;publication_year=1978&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B83\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lovasi</span> <span class=\"reference-given-names\">GS</span>, <span class=\"reference-surname\">O\\'Neil-Dunne</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Lu</span> <span class=\"reference-given-names\">JW</span>, <span class=\"reference-surname\">Sheehan</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Perzanowski</span> <span class=\"reference-given-names\">MS</span>. <span class=\"citation-label\">83.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Perspect.</span></span> <span class=\"reference-volume\">121</span>:<span class=\"reference-fpage\">494–</span><span class=\"reference-lpage\">500</span> 00e1–6 \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&amp;author=GS+Lovasi&amp;author=JP+O%27Neil-Dunne&amp;author=JW+Lu&amp;author=D+Sheehan&amp;author=MS+Perzanowski&amp;journal=Environ.+Health+Perspect.&amp;volume=121&amp;pages=494-500&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B84\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">84.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Is green space in the living environment associated with people\\'s feelings of social safety?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">1763–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&amp;author=J+Maas&amp;author=P+Spreeuwenberg&amp;author=M+van+Winsum-Westra&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=PP+Groenewegen&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=1763-77&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B85\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SM</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">85.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Social contacts as a possible mechanism behind the relation between green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">586–</span><span class=\"reference-lpage\">95</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&amp;author=J+Maas&amp;author=SM+van+Dillen&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Health+Place&amp;volume=15&amp;pages=586-95&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B86\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Schellevis</span> <span class=\"reference-given-names\">FG</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">86.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Morbidity is related to a green living environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">967–</span><span class=\"reference-lpage\">73</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;author=FG+Schellevis&amp;author=PP+Groenewegen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=63&amp;pages=967-73&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B87\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">87.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Green space, urbanity, and health: How strong is the relation?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">60</span>:<span class=\"reference-fpage\">587–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=60&amp;pages=587-92&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B88\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">88.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">8</span>:<span class=\"reference-fpage\">206</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=P+Spreeuwenberg&amp;author=PP+Groenewegen&amp;journal=BMC+Public+Health&amp;volume=8&amp;pages=206&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B89\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maller</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Townsend</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">St Leger</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Henderson-Wilson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Pryor</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">89.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context</span></span> Melbourne, Aust.: Deakin Univ.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&amp;author=C+Maller&amp;author=M+Townsend&amp;author=L+St+Leger&amp;author=C+Henderson-Wilson&amp;author=A+Pryor&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B90\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCormack</span> <span class=\"reference-given-names\">GR</span>, <span class=\"reference-surname\">Rock</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Toohey</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Hignell</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">90.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">712–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&amp;author=GR+McCormack&amp;author=M+Rock&amp;author=AM+Toohey&amp;author=D+Hignell&amp;journal=Health+Place&amp;volume=16&amp;pages=712-26&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B91\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCurdy</span> <span class=\"reference-given-names\">LE</span>, <span class=\"reference-surname\">Winterbottom</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Mehta</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Roberts</span> <span class=\"reference-given-names\">JR</span>. <span class=\"citation-label\">91.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Using nature and outdoor activity to improve children\\'s health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Curr. Probl. Pediatr. Adolesc. Health Care</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&amp;author=LE+McCurdy&amp;author=KE+Winterbottom&amp;author=SS+Mehta&amp;author=JR+Roberts&amp;journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&amp;volume=40&amp;pages=102-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B92\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">92.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Is physical activity in natural environments better for mental health than physical activity in other environments?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">130–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=91&amp;pages=130-34&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B93\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">93.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Greenspace, urbanity and health: relationships in England. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">61</span>:<span class=\"reference-fpage\">681–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=61&amp;pages=681-83&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B94\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">94.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Effect of exposure to natural environment on health inequalities: an observational population study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">372</span>:<span class=\"reference-fpage\">1655–</span><span class=\"reference-lpage\">60</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=Lancet&amp;volume=372&amp;pages=1655-60&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B95\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitrione</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">95.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Therapeutic responses to natural environments: using gardens to improve health care. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Minn. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&amp;author=S+Mitrione&amp;journal=Minn.+Med.&amp;volume=91&amp;pages=31-34&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B96\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Muñoz</span> <span class=\"reference-given-names\">S-A</span>. <span class=\"citation-label\">96.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Children in the Outdoors: A Literature Review</span></span> Forres, Scotl.: Sustain. Dev. Res. Cent.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&amp;author=S-A+Mu%C3%B1oz&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B97\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nieminen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Martelin</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Koskinen</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Aro</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Alanen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hyyppä</span> <span class=\"reference-given-names\">MT</span>. <span class=\"citation-label\">97.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social capital as a determinant of self-rated health and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Public Health</span></span> <span class=\"reference-volume\">55</span>:<span class=\"reference-fpage\">531–</span><span class=\"reference-lpage\">42</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&amp;author=T+Nieminen&amp;author=T+Martelin&amp;author=S+Koskinen&amp;author=H+Aro&amp;author=E+Alanen&amp;author=MT+Hyypp%C3%A4&amp;journal=Int.+J.+Public+Health&amp;volume=55&amp;pages=531-42&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B98\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Sangster</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Gallis</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">98.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests, Trees and Human Health</span></span> Dordrecht: Springer\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&amp;author=K+Nilsson&amp;author=M+Sangster&amp;author=C+Gallis&amp;author=T+Hartig&amp;author=S+de+Vries&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B99\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">ME</span>, <span class=\"reference-surname\">Berglund</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">99.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Soundscape quality in suburban green areas and city parks. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Acta Acustica United Acustica</span></span> <span class=\"reference-volume\">92</span>:<span class=\"reference-fpage\">903–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&amp;author=ME+Nilsson&amp;author=B+Berglund&amp;journal=Acta+Acustica+United+Acustica&amp;volume=92&amp;pages=903-11&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B100\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>, <span class=\"reference-surname\">Crane</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Stevens</span> <span class=\"reference-given-names\">JC</span>. <span class=\"citation-label\">100.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Air pollution removal by urban trees and shrubs in the United States. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">115–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&amp;author=DJ+Nowak&amp;author=DE+Crane&amp;author=JC+Stevens&amp;journal=Urban+For.+Urban+Green.&amp;volume=4&amp;pages=115-23&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B101\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Olmsted</span> <span class=\"reference-given-names\">FL</span>. <span class=\"citation-label\">101.\\u2002</span> <span class=\"reference-year\">1970 (1870)</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Public Parks and the Enlargement of Towns</span></span> New York: Arno (Cambridge, MA: Riverside)\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&amp;author=FL+Olmsted&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B102\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Orwell</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Burchett</span> <span class=\"reference-given-names\">MD</span>, <span class=\"reference-surname\">Tarran</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Torpy</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">102.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Water Air Soil Poll.</span></span> <span class=\"reference-volume\">177</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&amp;author=RL+Orwell&amp;author=RA+Wood&amp;author=MD+Burchett&amp;author=J+Tarran&amp;author=F+Torpy&amp;journal=Water+Air+Soil+Poll.&amp;volume=177&amp;pages=59-80&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B103\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Paoletti</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Bardelli</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Giovannini</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Pecchioli</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">103.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Air quality impact of an urban park over time. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Procedia Environ. Sci.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">10–</span><span class=\"reference-lpage\">16</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&amp;author=E+Paoletti&amp;author=T+Bardelli&amp;author=G+Giovannini&amp;author=L+Pecchioli&amp;journal=Procedia+Environ.+Sci.&amp;volume=4&amp;pages=10-16&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B104\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Powell</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Paluch</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Blair</span> <span class=\"reference-given-names\">SN</span>. <span class=\"citation-label\">104.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Physical activity for health: What Kind? How much? How Intense? On Top of What?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">349–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&amp;author=KE+Powell&amp;author=AE+Paluch&amp;author=SN+Blair&amp;journal=Annu.+Rev.+Public+Health&amp;volume=32&amp;pages=349-65&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B105\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Peacock</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Sellens</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Griffin</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">105.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The mental and physical health outcomes of green exercise. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Environ. Health Res.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">319–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&amp;author=J+Pretty&amp;author=J+Peacock&amp;author=M+Sellens&amp;author=M+Griffin&amp;journal=Int.+J.+Environ.+Health+Res.&amp;volume=15&amp;pages=319-37&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B106\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Proctor</span> <span class=\"reference-given-names\">JD</span>. <span class=\"citation-label\">106.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> The social construction of nature: relativist accusations, pragmatist and critical realist responses. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Assoc. Am. Geogr.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">352–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&amp;author=JD+Proctor&amp;journal=Ann.+Assoc.+Am.+Geogr.&amp;volume=88&amp;pages=352-76&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B107\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">107.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Gender differences in relationships between urban green space and health in the United Kingdom. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">71</span>:<span class=\"reference-fpage\">568–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=71&amp;pages=568-75&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B108\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Astell-Burt</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">108.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Green cities and health: a question of scale?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">160–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;author=T+Hartig&amp;author=S+de+Vries&amp;author=T+Astell-Burt&amp;author=H+Frumkin&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=66&amp;pages=160-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B109\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Pearce</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kingham</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">109.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Role of physical activity in the relationship between urban green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">127</span>:<span class=\"reference-fpage\">318–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&amp;author=EA+Richardson&amp;author=J+Pearce&amp;author=R+Mitchell&amp;author=S+Kingham&amp;journal=Public+Health&amp;volume=127&amp;pages=318-24&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B110\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rios</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Aiken</span> <span class=\"reference-given-names\">LS</span>, <span class=\"reference-surname\">Zautra</span> <span class=\"reference-given-names\">AJ</span>. <span class=\"citation-label\">110.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Behav. Med.</span></span> <span class=\"reference-volume\">43</span>:<span class=\"reference-fpage\">50–</span><span class=\"reference-lpage\">61</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&amp;author=R+Rios&amp;author=LS+Aiken&amp;author=AJ+Zautra&amp;journal=Ann.+Behav.+Med.&amp;volume=43&amp;pages=50-61&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B111\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rose</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">111.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Sick individuals and sick populations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Epidemiol.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&amp;author=G+Rose&amp;journal=Int.+J.+Epidemiol.&amp;volume=30&amp;pages=427-32&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B112\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sartelet</span> <span class=\"reference-given-names\">KN</span>, <span class=\"reference-surname\">Couvidat</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Seigneur</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roustan</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">112.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Impact of biogenic emissions on air quality over Europe and North America. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">53</span>:<span class=\"reference-fpage\">131–</span><span class=\"reference-lpage\">41</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&amp;author=KN+Sartelet&amp;author=F+Couvidat&amp;author=C+Seigneur&amp;author=Y+Roustan&amp;journal=Atmos.+Environ.&amp;volume=53&amp;pages=131-41&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B113\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Setälä</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Viippola</span> <span class=\"reference-given-names\">V</span>, <span class=\"reference-surname\">Rantalainen</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Pennanen</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Yli-Pelkonen</span> <span class=\"reference-given-names\">V</span>. <span class=\"citation-label\">113.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Does urban vegetation mitigate air pollution in northern conditions?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">183</span>:<span class=\"reference-fpage\">104–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&amp;author=H+Set%C3%A4l%C3%A4&amp;author=V+Viippola&amp;author=AL+Rantalainen&amp;author=A+Pennanen&amp;author=V+Yli-Pelkonen&amp;journal=Environ.+Pollut.&amp;volume=183&amp;pages=104-12&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B114\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Simpson</span> <span class=\"reference-given-names\">JR</span>, <span class=\"reference-surname\">McPherson</span> <span class=\"reference-given-names\">EG</span>. <span class=\"citation-label\">114.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">69–</span><span class=\"reference-lpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&amp;author=JR+Simpson&amp;author=EG+McPherson&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=69-74&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B115\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">115.\\u2002</span> <span class=\"reference-year\">1988</span>. <span class=\"reference-article-title\"> Perception and aesthetics of the urban environment: review of the role of vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">106</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&amp;author=RC+Smardon&amp;journal=Landsc.+Urban+Plann.&amp;volume=15&amp;pages=85-106&amp;publication_year=1988&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B116\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Van Gemerden</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">116.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&amp;author=H+Staats&amp;author=E+Van+Gemerden&amp;author=T+Hartig&amp;journal=Leis.+Sci.&amp;volume=32&amp;pages=401-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B117\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Stigsdotter</span> <span class=\"reference-given-names\">UK</span>, <span class=\"reference-surname\">Ekholm</span> <span class=\"reference-given-names\">O</span>, <span class=\"reference-surname\">Schipperijn</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Toftager</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Kamper-Jørgensen</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Randrup</span> <span class=\"reference-given-names\">TB</span>. <span class=\"citation-label\">117.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">411–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&amp;author=UK+Stigsdotter&amp;author=O+Ekholm&amp;author=J+Schipperijn&amp;author=M+Toftager&amp;author=F+Kamper-J%C3%B8rgensen&amp;author=TB+Randrup&amp;journal=Scand.+J.+Public+Health&amp;volume=38&amp;pages=411-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B118\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sugiyama</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Leslie</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Owen</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">118.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">62</span>:<span class=\"reference-fpage\">e9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&amp;author=T+Sugiyama&amp;author=E+Leslie&amp;author=B+Giles-Corti&amp;author=N+Owen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=62&amp;pages=e9&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B119\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Takano</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Nakamura</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Watanabe</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">119.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">56</span>:<span class=\"reference-fpage\">913–</span><span class=\"reference-lpage\">18</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&amp;author=T+Takano&amp;author=K+Nakamura&amp;author=M+Watanabe&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=56&amp;pages=913-18&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B120\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tallis</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Sinnett</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">120.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">38</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&amp;author=M+Tallis&amp;author=G+Taylor&amp;author=D+Sinnett&amp;author=P+Freer-Smith&amp;journal=Landsc.+Urban+Plann.&amp;volume=103&amp;pages=129-38&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B121\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>. <span class=\"citation-label\">121.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Children with attention deficits concentrate better after walk in the park. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Atten. Disord.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">402–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;journal=J.+Atten.+Disord.&amp;volume=12&amp;pages=402-9&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B122\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">122.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Views of nature and self-discipline: evidence from inner city children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">49–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=J.+Environ.+Psychol.&amp;volume=22&amp;pages=49-63&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B123\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Thompson Coon</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Boddy</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Stein</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Whear</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Depledge</span> <span class=\"reference-given-names\">MH</span>. <span class=\"citation-label\">123.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">1761–</span><span class=\"reference-lpage\">72</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&amp;author=J+Thompson+Coon&amp;author=K+Boddy&amp;author=K+Stein&amp;author=R+Whear&amp;author=J+Barton&amp;author=MH+Depledge&amp;journal=Environ.+Sci.+Technol.&amp;volume=45&amp;pages=1761-72&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B124\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tsunetsugu</span> <span class=\"reference-given-names\">Y</span>, <span class=\"reference-surname\">Park</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Miyazaki</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">124.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Prevent. Med.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">27–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&amp;author=Y+Tsunetsugu&amp;author=B+Park&amp;author=Y+Miyazaki&amp;journal=Environ.+Health+Prevent.+Med.&amp;volume=15&amp;pages=27-37&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B125\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">125.\\u2002</span> <span class=\"reference-year\">1979</span>. <span class=\"reference-article-title\"> Visual landscapes and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Res.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&amp;author=RS+Ulrich&amp;journal=Landsc.+Res.&amp;volume=4&amp;pages=17-23&amp;publication_year=1979&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B126\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">126.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Aesthetic and affective response to natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Human Behaviour and Environment: Advances in Theory and Research.</span></span> Volume\\n<span class=\"reference-volume\">6</span> <span class=\"reference-source\"><span class=\"reference-italic\">Behaviour and the Natural Environment</span></span>, ed. I\\nAltman, JF Wohlwill <span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">125</span> New York: Plenum\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&amp;author=RS+Ulrich&amp;journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&amp;pages=85-125&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B127\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Simons</span> <span class=\"reference-given-names\">RF</span>, <span class=\"reference-surname\">Losito</span> <span class=\"reference-given-names\">BD</span>, <span class=\"reference-surname\">Fiorito</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Miles</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Zelson</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">127.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Stress recovery during exposure to natural and urban environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">201–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&amp;author=RS+Ulrich&amp;author=RF+Simons&amp;author=BD+Losito&amp;author=E+Fiorito&amp;author=MA+Miles&amp;author=M+Zelson&amp;journal=J.+Environ.+Psychol.&amp;volume=11&amp;pages=201-30&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B128\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Cauwenberg</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">De Bourdeaudhuij</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">De Meester</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Van Dyck</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Salmon</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">128.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Relationship between the physical environment and physical activity in older adults: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">458–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&amp;author=J+Van+Cauwenberg&amp;author=I+De+Bourdeaudhuij&amp;author=F+De+Meester&amp;author=D+Van+Dyck&amp;author=J+Salmon&amp;journal=Health+Place&amp;volume=17&amp;pages=458-69&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B129\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Custers</span> <span class=\"reference-given-names\">MHG</span>. <span class=\"citation-label\">129.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Gardening promotes neuroendocrine and affective restoration from stress. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Health Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&amp;author=AE+Van+den+Berg&amp;author=MHG+Custers&amp;journal=J.+Health+Psychol.&amp;volume=16&amp;pages=3-11&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B130\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">130.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Green space as a buffer between stressful life events and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">70</span>:<span class=\"reference-fpage\">1203–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&amp;author=AE+Van+den+Berg&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Soc.+Sci.+Med.&amp;volume=70&amp;pages=1203-10&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B131\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>. <span class=\"citation-label\">131.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health</span></span> <span class=\"reference-volume\">9</span>:<span class=\"reference-fpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&amp;author=AE+Van+den+Berg&amp;author=M+van+Winsum-Westra&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;journal=Environ.+Health&amp;volume=9&amp;pages=74&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B132\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Herzele</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Podesta</span> <span class=\"reference-given-names\">MTC</span>, <span class=\"reference-surname\">van Zon</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">132.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: the challenge of linking practice and research. </span> See Ref. 98 <span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B133\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Montarzino</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">133.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> The childhood factor: adult visits to green places and the significance of childhood experience. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">111–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&amp;author=C+Ward+Thompson&amp;author=P+Aspinall&amp;author=A+Montarzino&amp;journal=Environ.+Behav.&amp;volume=40&amp;pages=111-43&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B134\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roe</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Clow</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Miller</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">134.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">105</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">29</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&amp;author=C+Ward+Thompson&amp;author=J+Roe&amp;author=P+Aspinall&amp;author=R+Mitchell&amp;author=A+Clow&amp;author=D+Miller&amp;journal=Landsc.+Urban+Plann.&amp;volume=105&amp;pages=221-29&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B135\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">135.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Nearby nature—a buffer of life stress among rural children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">311–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&amp;author=NM+Wells&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=35&amp;pages=311-30&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B136\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Lekies</span> <span class=\"reference-given-names\">KS</span>. <span class=\"citation-label\">136.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Nature and the life course: pathways from childhood nature experiences to adult environmentalism. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Child. Youth Environ.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&amp;author=NM+Wells&amp;author=KS+Lekies&amp;journal=Child.+Youth+Environ.&amp;volume=16&amp;pages=1-24&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B137\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Whitelaw</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">137.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Crit. Public Health</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&amp;author=S+Whitelaw&amp;journal=Crit.+Public+Health&amp;volume=22&amp;pages=427-40&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B138\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">138.\\u2002</span><span class=\"reference-collab\">WHO (World Health Organ.)</span> <span class=\"reference-year\">1946</span>. <span class=\"reference-article-title\"> <span class=\"reference-italic\">Preamble to the Constitution of the World Health Organization</span> as adopted by the International Health Conference. </span> New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&amp;publication_year=1946&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B139\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wilson</span> <span class=\"reference-given-names\">SJ</span>, <span class=\"reference-surname\">Lipsey</span> <span class=\"reference-given-names\">MW</span>. <span class=\"citation-label\">139.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eval. Program Plann.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&amp;author=SJ+Wilson&amp;author=MW+Lipsey&amp;journal=Eval.+Program+Plann.&amp;volume=23&amp;pages=1-12&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B140\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Yoo</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Kwon</span> <span class=\"reference-given-names\">YJ</span>, <span class=\"reference-surname\">Son</span> <span class=\"reference-given-names\">KC</span>, <span class=\"reference-surname\">Kays</span> <span class=\"reference-given-names\">SJ</span>. <span class=\"citation-label\">140.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Am. Soc. Hort. Sci.</span></span> <span class=\"reference-volume\">131</span>:<span class=\"reference-fpage\">452–</span><span class=\"reference-lpage\">58</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&amp;author=MH+Yoo&amp;author=YJ+Kwon&amp;author=KC+Son&amp;author=SJ+Kays&amp;journal=J.+Am.+Soc.+Hort.+Sci.&amp;volume=131&amp;pages=452-58&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B141\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Zick</span> <span class=\"reference-given-names\">CD</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">KR</span>, <span class=\"reference-surname\">Kowaleski-Jones</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Uno</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Merrill</span> <span class=\"reference-given-names\">BJ</span>. <span class=\"citation-label\">141.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Harvesting more than vegetables: the potential weight control benefits of community gardening. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">e1–</span><span class=\"reference-lpage\">6</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&amp;author=CD+Zick&amp;author=KR+Smith&amp;author=L+Kowaleski-Jones&amp;author=C+Uno&amp;author=BJ+Merrill&amp;journal=Am.+J.+Public+Health&amp;volume=103&amp;pages=e1-6&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li></ol>\\n</div>\\n</div>\\n<div id=\"cited\" class=\"citations hidden-js-div tabbedsection tab-pane\">\\n<div class=\"hiddenjsdiv\" id=\"itemIdForCitations\" data-doi=\"10.1146/annurev-publhealth-032013-182443\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<img class=\"citingArticlesLoading\" src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<div id=\"citationContent\"></div>\\n</div>\\n<div class=\"hiddenjsdiv itemmetadata\">\\n<div class=\"metadata_title\">Nature and Health</div>\\n<div class=\"metadata_citation\">\\n<span>Annual Review of Public Health <span class=\"citationvolume\">35</span></span><span>, 207</span><span> (2014)</span><span>; <a href=\"https://doi.org/10.1146/annurev-publhealth-032013-182443\" rel=\"external\" class=\"externallink\" title=\"undefined - opens in new window/tab\" target=\"_blank\">https://doi.org/10.1146/annurev-publhealth-032013-182443</a></span>\\n</div>\\n<div class=\"metadata_itemWebId\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n</div>\\n<div id=\"dataandmedia\" class=\"dataandmedia tabbedsection hidden-js-div tab-pane\" data-fulltexturl=\"\" data-fulltextexpandlinktext=\"Toggle display:\" data-hideinlinetablesbydefault=\"false\">\\n\\n\\n\\n<div id=\"hiddenDataMediaWebid\" class=\"hiddenjsdiv\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"itemDataMediaLoading\">\\n<img src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<p>Data &amp; Media loading...</p>\\n</div>\\n<div id=\"datamediacontent\"></div>\\n</div>\\n<div id=\"supplementary_data\" class=\"supplementary-container tabbedsection hidden-js-div tab-pane\">\\n<div id=\"supplementary_data_contents\" data-statslogurl=\"/statslogredirect\">\\n<h4 id=\"supp_title_1\" class=\"supplementary-item-heading-show\" style=\"padding-top:10px;\">Supplementary Data</h4>\\n<ul class=\"articleMetadata list-unstyled col-sm-8 pull-left\" style=\"margin-bottom:0;padding-bottom:0;\">\\n<li style=\"margin-bottom:0;\">\\n<p></p><p>Download <a href=\"https://www.annualreviews.org/deliver/fulltext/publhealth/35/1/pu35_hartig_supmat.pdf?itemId=/content/suppdata/10.1146/annurev-publhealth-032013-182443/1\"><strong>Supplemental References</strong></a> (PDF)</p><p><strong>Audio:</strong> Terry Hartig, Richard Mitchell, Sjerp de Vries, and Howard Frumkin discuss the current state of research on the impact that contact with nature has on individual and population health.</p><p></p><div frameborder=\"0\" src=\"https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/149328804&amp;color=0058a0&amp;auto_play=false&amp;hide_related=false&amp;show_artwork=true\" data-original-tag=\"iframe\">\\n  \\n\\n  \\n  <link rel=\"dns-prefetch\" href=\"https://api-widget.soundcloud.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://sb.scorecardresearch.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://api.soundcloud.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://va.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i1.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i2.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i3.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" 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list-unstyled\">\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052020-110732\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-052020-110732\" dir=\"auto\" class=\"\"> \\nSocial Connection as a Public Health Issue: The Evidence and a Systemic Framework for Prioritizing the “Social” in Social Determinants of Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\">Julianne Holt-Lunstad</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">193–213\\n(21)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102529\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-090419-102529\" dir=\"auto\" class=\"\"> \\nUnderstanding and Responding to Health Literacy as a Social Determinant of Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Don Nutbeam</span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\nJane E. Lloyd</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">159–173\\n(15)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-012420-105026\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-012420-105026\" dir=\"auto\" class=\"\"> \\nExtreme Weather and Climate Change: Population Health and Health System Implications\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Kristie L. 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Reid</span><span class=\"author-list__item \">,\\nShubhayu Saha</span><span class=\"author-list__item \">,\\nJune Spector</span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\nPeter Berry</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">293–315\\n(23)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052620-103528\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-052620-103528\" dir=\"auto\" class=\"\"> \\nEliminating Explicit and Implicit Biases in Health Care: Evidence and Research Needs\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Monica B. 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Chin</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">477–501\\n(25)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102409\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-090419-102409\" dir=\"auto\" class=\"\"> \\nClimate Change Disinformation and How to Combat It\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\">Stephan Lewandowsky</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">1–21\\n(21)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li>\\n</li>\\n</ul>\\n<form class=\"ahahTocArticles\">\\n\\n\\n\\n</form>\\n</div> \\n\\n<div id=\"hiddenmostviewedparent\" class=\"hiddenjsdiv hidden-js-div\">content/journals/publhealth</div>\\n<div id=\"hiddenmostviewedparenttype\" class=\"hiddenjsdiv hidden-js-div\">Journal</div>\\n<div id=\"hiddenmostviewednumber\" class=\"hiddenjsdiv hidden-js-div\">5</div>\\n<div id=\"hiddenmostviewednumbershown\" class=\"hiddenjsdiv hidden-js-div\">3</div>\\n<div id=\"hiddenmostviewedemptymessage\" class=\"hiddenjsdiv hidden-js-div\">false</div>\\n<div id=\"hiddenmostviewedlanguage\" class=\"hiddenjsdiv hidden-js-div\">en</div>\\n\\n</div>\\n</div>\\n<div class=\"mostcitedcontainer panel panel-default \">\\n<div class=\"panel-heading\">\\n<h2 class=\"panel-title\">\\nMost Cited\\n<span class=\"rssicon\">\\n<a href=\"https://www.annualreviews.org/rss/content/journals/publhealth/mostcitedarticles?fmt=rss\" class=\"rssiconheader rssFeed externallink\" title=\"Subscribe to most Cited RSS feed\">\\n<i class=\"fa fa-rss\"></i>\\n<span class=\"sr-only\">Most Cited RSS feed</span>\\n</a>\\n</span>\\n</h2>\\n</div>\\n<div class=\"panel-body\">\\n<div id=\"mostcited\">\\n<ul class=\"separated-list list-unstyled\">\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.19.1.173_1\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.19.1.173\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.19.1.173\" dir=\"auto\" class=\"\"> \\nREVIEW OF COMMUNITY-BASED RESEARCH: Assessing Partnership Approaches to Improve Public Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Barbara+A.+Israel&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Barbara A. Israel</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Amy+J.+Schulz&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Amy J. Schulz</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Edith+A.+Parker&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Edith A. Parker</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Adam+B.+Becker&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Adam B. Becker</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 19 \\n(1998), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">173–202\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-032013-182443_2\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-032013-182443\" dir=\"auto\" class=\"\"> \\nNature and Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Terry+Hartig&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Terry Hartig</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Richard+Mitchell&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Richard Mitchell</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Sjerp+de+Vries&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Sjerp de Vries</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Howard+Frumkin&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Howard Frumkin</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 35 \\n(2014), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">207–228\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031912-114409_3\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031912-114409\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031912-114409\" dir=\"auto\" class=\"\"> \\nThe Epidemiology of Depression Across Cultures\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Ronald+C.+Kessler&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Ronald C. Kessler</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Evelyn+J.+Bromet&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Evelyn J. Bromet</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 34 \\n(2013), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">119–138\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-040218-043750_4\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-040218-043750\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-040218-043750\" dir=\"auto\" class=\"\"> \\nRacism and Health: Evidence and Needed Research\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=David+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David R. Williams</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Jourdyn+A.+Lawrence&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Jourdyn A. Lawrence</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Brigette+A.+Davis&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Brigette A. Davis</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 40 \\n(2019), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">105–125\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.18.1.341_5\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.18.1.341\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.18.1.341\" dir=\"auto\" class=\"\"> \\nMeasuring Social Class in US Public Health Research: Concepts, Methodologies, and Guidelines\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=N.+Krieger&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">N. Krieger</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=D.+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">D. R. Williams</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=N.+E.+Moss&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">N. E. Moss</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 18 \\n(1997), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">341–378\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031210-101218_6\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031210-101218\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031210-101218\" dir=\"auto\" class=\"\"> \\nThe Social Determinants of Health: Coming of Age\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Paula+Braveman&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Paula Braveman</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Susan+Egerter&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Susan Egerter</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=David+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David R. Williams</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 32 \\n(2011), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">381–398\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.012809.103604_7\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.012809.103604\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.012809.103604\" dir=\"auto\" class=\"\"> \\nThe Role of Behavioral Science Theory in Development and Implementation of Public Health Interventions\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Karen+Glanz&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Karen Glanz</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Donald+B.+Bishop&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Donald B. Bishop</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 31 \\n(2010), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">399–418\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev.pu.15.050194.000543_8\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.pu.15.050194.000543\" data-itemid=\"/content/journals/10.1146/annurev.pu.15.050194.000543\" dir=\"auto\" class=\"\"> \\nAcute Respiratory Effects of Particulate Air Pollution\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=D.+W.+Dockery&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">D. W. Dockery</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=C.+A.+Pope&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">C. A. Pope</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 15 \\n(1994), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">107–132\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-032315-021402_9\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032315-021402\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-032315-021402\" dir=\"auto\" class=\"\"> \\nMediation Analysis: A Practitioner\\'s Guide\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\"><a href=\"https://www.annualreviews.org/search?value1=Tyler+J.+VanderWeele&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Tyler J. VanderWeele</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 37 \\n(2016), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">17–32\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031914-122957_10\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031914-122957\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031914-122957\" dir=\"auto\" class=\"\"> \\nThe Prescription Opioid and Heroin Crisis: A Public Health Approach to an Epidemic of Addiction\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Andrew+Kolodny&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Andrew Kolodny</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=David+T.+Courtwright&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David T. 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email: terry.hartig@ibf.uu.se', '2Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: Richard.Mitchell@glasgow.ac.uk', '3Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: sjerp.devries@wur.nl', '4School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: frumkin@uw.edu'], 'citation_abstract': 'Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum]', 'ogDescription': 'Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum]', 'title': 'Nature and Health | Annual Reviews', 'shareaholic:site_id': '5a02bf1fca9627aa4ef195830cf8e332', 'twitter:card': 'summary_large_image', 'dc.type': 'Text', 'citation_issue': 'Volume 35, 2014', 'robots': ['NOODP,noarchive', 'noindex, follow'], 'dc.creator': ['Terry Hartig', 'Richard Mitchell', 'Sjerp de Vries', 'Howard Frumkin'], 'citation_issn': ['0163-7525', '1545-2093'], 'dc.publisher': 'Annual Reviews', 'citation_year': '2014', 'citation_publication_date': '2014/03/18', 'citation_doi': '10.1146/annurev-publhealth-032013-182443', 'dc.date': '2014/03/18', 'viewport': ['width=device-width, initial-scale=1', 'width=device-width,minimum-scale=1,maximum-scale=1,user-scalable=no'], 'citation_author': ['Terry Hartig', 'Richard Mitchell', 'Sjerp de Vries', 'Howard Frumkin'], 'citation_publisher': 'Annual Reviews', 'dc.title': 'Nature and Health', 'description': 'Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. 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      "success=True status='completed' completed=5 total=5 creditsUsed=5 expiresAt=datetime.datetime(2025, 7, 30, 18, 16, 43, tzinfo=TzInfo(UTC)) next=None data=[FirecrawlDocument(url=None, markdown='We use [cookies](https://www.annualreviews.org/cookie-info) to track usage and preferences. [I Understand](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443)\\n\\n1932\\n\\n### [Annual Review of Public Health](https://www.annualreviews.org/content/journals/publhealth)\\n\\n[**Volume 35, 2014**](https://www.annualreviews.org/content/journals/publhealth/35/1 \"\")\\n\\n#### Review Article\\n\\n#### Free\\n\\n# Nature and Health\\n\\n- [Terry Hartig](https://www.annualreviews.org/search?value1=Terry+Hartig&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 1, [Richard Mitchell](https://www.annualreviews.org/search?value1=Richard+Mitchell&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 2, [Sjerp de Vries](https://www.annualreviews.org/search?value1=Sjerp+de+Vries&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 3\\xa0and [Howard Frumkin](https://www.annualreviews.org/search?value1=Howard+Frumkin&option1=author&noRedirect=true&sortField=prism_publicationDate&sortDescending=true) 4\\n- [View Affiliations\\\\\\\\\\n\\\\\\\\\\nHide Affiliations](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#)\\n\\n\\n\\n1Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: [terry.hartig@ibf.uu.se](mailto:terry.hartig@ibf.uu.se)2Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: [Richard.Mitchell@glasgow.ac.uk](mailto:Richard.Mitchell@glasgow.ac.uk)3Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: [sjerp.devries@wur.nl](mailto:sjerp.devries@wur.nl)4School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: [frumkin@uw.edu](mailto:frumkin@uw.edu)\\n\\n- Vol. 35:207-228\\n(Volume publication date March 2014)\\n[https://doi.org/10.1146/annurev-publhealth-032013-182443](https://doi.org/10.1146/annurev-publhealth-032013-182443)\\n- First published as a Review in Advance on\\nJanuary 02, 2014\\n\\n- © Annual Reviews\\n\\n\\n### Abstract\\n\\nUrbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[ [Erratum](http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001)\\\\]\\n\\n**Keyword(s):**[community gardens](https://www.annualreviews.org/search?value1=%22community+gardens%22&option1=pub_keyword \"community gardens\"),\\xa0[green infrastructure](https://www.annualreviews.org/search?value1=%22green+infrastructure%22&option1=pub_keyword \"green infrastructure\"),\\xa0[green space](https://www.annualreviews.org/search?value1=%22green+space%22&option1=pub_keyword \"green space\"),\\xa0[greenspace](https://www.annualreviews.org/search?value1=%22greenspace%22&option1=pub_keyword \"greenspace\"),\\xa0[landscape](https://www.annualreviews.org/search?value1=%22landscape%22&option1=pub_keyword \"landscape\"),\\xa0[parks](https://www.annualreviews.org/search?value1=%22parks%22&option1=pub_keyword \"parks\"),\\xa0[urban forests](https://www.annualreviews.org/search?value1=%22urban+forests%22&option1=pub_keyword \"urban forests\")\\n\\n### Associated Article\\n\\nThere are media items related to this article:\\n\\n[Nature and Health](https://www.annualreviews.org/content/multimedia/10.1146/do.multimedia.2014.05.13.269)\\n\\n### Erratum\\n\\nAn erratum has been published for this article:\\n\\n[Nature and Health](https://www.annualreviews.org/content/journals/10.1146/annurev-pu-35-102115-200001)\\n\\n![Loading](https://www.annualreviews.org/images/jp/spinner.gif)\\n\\nArticle metrics loading...\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n2014-03-18\\n\\n2025-07-29\\n\\n[Download as PowerPoint](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#)\\n\\n- ISSN: 0163-7525, Online ISSN: 1545-2093\\n- DOI: http://dx.doi.org/10.1146/annurev-publhealth-032013-182443\\n- Volume 35, Issue 1, pages 207-228\\n- Copyright © 2014 by Annual Reviews. All rights reserved\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\n# Nature and Health\\n\\nTerry Hartig\\n1\\n; Richard Mitchell\\n2\\n; Sjerp de Vries\\n3\\n; Howard Frumkin\\n4\\n\\n\\n1Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: [terry.hartig@ibf.uu.se](mailto:terry.hartig@ibf.uu.se) 2Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: [Richard.Mitchell@glasgow.ac.uk](mailto:Richard.Mitchell@glasgow.ac.uk) 3Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: [sjerp.devries@wur.nl](mailto:sjerp.devries@wur.nl) 4School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: [frumkin@uw.edu](mailto:frumkin@uw.edu)\\n\\nABSTRACT\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nUrbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[ [Erratum](http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001)\\\\]\\n\\nKeywords\\n\\n- [greenspace](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22greenspace%22),\\n- [green space](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22green%20space%22),\\n- [green infrastructure](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22green%20infrastructure%22),\\n- [landscape](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22landscape%22),\\n- [parks](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22parks%22),\\n- [urban forests](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22urban%20forests%22),\\n- [community gardens](https://www.annualreviews.org/search?option1=pub_keyword&value1=%22community%20gardens%22)\\n\\nINTRODUCTION\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nThe public health field views the natural environment with ambivalence. Infectious agents, extreme weather, and geological events regularly sicken, injure, and kill people, often en masse. Yet, people cannot remain healthy without clean air, clean water, food, and other resources provided as “ecosystem services.” Enormous amounts of research inform these contrasting perspectives, describing how the natural environment harms humans, how health depends on the natural environment, and how human impacts on the natural environment rebound on health.\\n\\nA theme that has become increasingly distinct over recent years concerns the natural environment, or “nature,” perceived, valued, and engaged with as such, particularly in urbanized societies. This research focuses primarily on benefits of contact with nature. Key segments of this literature are young, but central ideas, such as the link between vegetation and air quality, have ancient provenance in the public health field ([82](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B82 \"\")). Interventions prompted by those ideas, such as urban parks, have long remained in place, presumably because the public has enjoyed them and believed in their salutary value. The recent research tests such beliefs, and it encourages more nuanced theoretical and practical consideration of nature-health relations.\\n\\nIn this article, we review work done in recent decades to better characterize the health benefits of contact with nature. We do not cover this body of work comprehensively, but instead we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations. We touch on clinically oriented work on contact with nature in therapeutic contexts, but we do not discuss benefits of companion animals, which may be taken as representations of nature ([42](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42 \"\"); however, see [6](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B6 \"\")). Although the core ideas we discuss have a durable legacy in public health practice, the topic has not previously been the focus of an Annual Review of Public Health article (however, see [44](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B44 \"\"), [80](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B80 \"\")).\\n\\nBelow, we examine the concept of nature, consider reasons for the current expansion of research, and provide a “review of reviews.” We then review research on pathways involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research.\\n\\nDEFINING “NATURE”\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nIn an objective sense, “nature” as used here refers to physical features and processes of nonhuman origin that people ordinarily can perceive, including the “living nature” of flora and fauna, together with still and running water, qualities of air and weather, and the landscapes that comprise these and show the influence of geological processes. As such, “nature” overlaps substantially with “natural environment,” an environment with little or no apparent evidence of human presence or intervention, and the two terms have been used interchangeably.\\n\\nIn practice, however, much research does not accept exclusion of the artificial as a basis for defining nature or natural environment. The nature of interest is often situated in built environments, as with indoor plants and street trees. Similarly, allotment (or community) gardens and urban parks comprise natural features, appear natural, and provide opportunities to engage with and follow natural processes, but they are typically designed, constructed, regulated, and maintained. Research has also acknowledged that a person may experience nature as such when viewing natural elements or landscapes from a building or vehicle, in photographs and films, or in virtual reality setups.\\n\\nThe term “urban nature” is instructive. It admits the presence of nature even in those human environments that some consider the antithesis of the natural. Yet, just as it puts the urban and natural together, it also sets them apart. It exemplifies how contacts with nature in an urbanized society occur within a frame of reference shaped in an everyday life oriented in various ways to the society\\'s urban circumstances.\\n\\nThe term “nature experience” is used in some segments of this research to emphasize the subjective perception and evaluation of relevant environmental features ([67](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67 \"\")). It is, however, not a purely individual subjectivity, nor is it fixed. An individual\\'s experience of nature occurs within and carries further the long-running exchange between the society and its environment ([48](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B48 \"\")).\\n\\nIn sum, although nature has a wide variety of objective referents, it is also experienced subjectively and is effective as a social construction (for further discussion, see [106](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B106 \"\")). Accordingly, researchers represent nature with diverse physical and spatial variables, encountered in diverse activity contexts. Some also apply measurement, analysis, and design strategies to tap into the subjective experience of the environment. Because opportunities for contact with nature, ways of encountering nature, and experiences of nature vary across sociocultural contexts, researchers have examined variation in outcomes not only among individuals within given populations, but also across populations ([108](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108 \"\")).\\n\\nSOME REASONS FOR THE CURRENT RESEARCH EXPANSION\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nGrowth in this field of research is shown clearly by the increase in publications. For example, a search in the Web of Knowledge on just one term, “greenspace and health,” yielded 2 hits for 1990–1999, 34 for 2000–2009, and 45 from 2010 to June 2013.\\n\\nWhy is this expansion occurring? Motives for involvement in the field vary. Some work reflects concerns that urbanization, environmental degradation, and lifestyle changes are quantitatively and qualitatively diminishing possibilities for human contact with nature. For example, dense urban settings, if poorly designed (without accessible green space), may reduce opportunities for stress-reducing nature contact as well as increase exposure to environmental stressors ([53](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B53 \"\")). Other work considers nature as just one aspect of the physical environment that is potentially beneficial for health. For example, epidemic obesity in some countries has focused attention on sedentary lifestyles and environmental supports for physical activity, including but not limited to nearby parks ([24](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B24 \"\")). In general, the research aims to inform practical measures that directly or indirectly involve access to nature, including provisions for housing, transportation, and recreation.\\n\\nChange in thinking about health has also enabled expansion of the research field. With the epidemiologic transition to chronic, lifestyle-related diseases as the major causes of mortality, biopsychosocial explanation ([33](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B33 \"\")) came to compete with the biomedical model, and constructs such as “psychological stress” and “social support” came into widespread use. This development has suited a field populated mainly by people trained in disciplines (e.g., human geography, environmental psychology, social epidemiology) and professions (e.g., outdoor recreation management, landscape architecture, urban forestry) that take interest in how people perceive, interpret, evaluate, and act on the environment. The conception of health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity” ([138](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B138 \"\"), p. 100) has also been influential for its heuristic value and as a basis for action. By acknowledging the positive, multidimensional character and subjective aspects of health, this concept supports the involvement of a wide variety of actors in efforts to understand and support health, including but not limited to those trained to treat symptoms of ill-health ([132](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B132 \"\")). Research in the field accordingly represents health in many ways, not only with regard to forms of morbidity ([86](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86 \"\")), causes of mortality ([94](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94 \"\")), and longevity ([119](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B119 \"\")) but also with regard to self-reported health ([26](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26 \"\")) and diverse intermediate outcomes involving different pathways, such as beneficial change in emotional and physiological markers of stress measured during visits to natural areas ([3](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B3 \"\"), [49](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49 \"\")).\\n\\nMethodological and conceptual advances are also feeding the expansion of the field; old and new topics are being studied with a range of new tools. For example, beliefs about stress-reducing effects of park visits are widespread and long-standing ([101](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B101 \"\")), but experimental testing of such effects is a relatively recent activity ([52](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B52 \"\"), [125](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B125 \"\")). These small-scale experimental demonstrations of pathway plausibility informed the first large-scale epidemiologic studies to assess associations between contact with nature and health ([26](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26 \"\"), [87](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87 \"\"), [93](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B93 \"\")). Those studies used resources and techniques that only recently became available. For example, they used land-use data extracted from satellite images with digital technologies to describe the spatial extent of different kinds of nature accessible to the given individuals and groups in their residential contexts.\\n\\nHaving considered some of the developments in societies, sciences, and professions that have motivated and enabled the recent expansion of this field, we turn now to examine the research in more detail, starting with previous efforts to review the literature.\\n\\nREVIEW OF REVIEWS\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nMany review articles on nature and human health have been published in recent years. Assessing them is one means of summarizing the state of the field in terms of what is known and the quality of the research. In April 2013, we undertook a systematic search for reviews. We used Medline and all Web of Knowledge databases to identify peer-reviewed papers, sought nonindexed, non-peer-reviewed (gray) literature, and online reviews via Internet searches, and examined citation lists of already identified reviews. We included review articles or reports relevant to relationships between nature and human health and well-being. Inevitably, because the topic boundaries of nature and health are fuzzy, relevance was sometimes difficult to establish. For example, reviews on environmental correlates of physical activity often include access to urban parks or trails among many other environmental characteristics, but they may not focus on natural environments. We identified 59 relevant reviews at the time of the search (see [Supplemental Material](http://www.annualreviews.org/doi/suppl/10.1146/annurev-publhealth-032013-182443)). Of the peer-reviewed articles, most appeared in journals concerned with public health or environmental planning.\\n\\nThe reviews varied considerably in methodology and guiding aims. We observed three broad search-and-synthesis approaches: (a) narrative reviews, not clearly based on a systematic literature search (n = 24); (b) narrative reviews based on a systematic literature search or comprehensive case identification (n = 13); and (c) full systematic reviews based on an exhaustive literature search (n = 22). The reviews tended to have one of four general aims. First, systematic reviews sought to collate and synthesize all evidence for the effects of specified contacts with nature on specified markers of health (e.g., [2](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2 \"\"), [123](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123 \"\")). Second, summary reviews often aimed to introduce the field, explain its concepts and the mechanisms by which natural environments might affect health, and then set out some evidence for effects (e.g., [54](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54 \"\"), [89](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B89 \"\")). Some were published as gray literature and had been commissioned by governmental or nongovernmental agencies. A third group included what might be labeled “flag-waving” reviews (e.g., [42](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42 \"\"), [95](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B95 \"\")). These were aimed at introducing the topic to a new audience and were often relatively brief. Fourth, and fewer in number, were conceptual reviews, methodological reviews, or those proposing new theoretical perspectives (e.g., [8](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B8 \"\"), [79](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B79 \"\")).\\n\\nReviews also varied by the environments and/or pathways to health discussed. Physical activity had the most dedicated coverage as the focus of 18 reviews (e.g., [65](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B65 \"\"), [90](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90 \"\")). Mitigation of poor air quality/urban heat problems and physiologically/psychologically restorative effects also had dedicated reviews (e.g., [12](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B12 \"\"), [15](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B15 \"\"), [19](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19 \"\")). Twenty-six of the reviews addressed multiple mechanisms. The reviews covered a wide range of natural features and environmental categories, including indoor plants ([16](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B16 \"\")), urban parks ([90](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90 \"\")), and forests ([22](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B22 \"\")), but coverage was uneven. Urban parks were the most commonly considered setting. Two categories of environments were conspicuously underrepresented or absent; rural areas had just one review ([41](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B41 \"\")), and there were no review articles about gardens or allotments or community gardens other than those used for therapeutic purposes. Also, very few reviews focused on population subgroups. Children were the most commonly considered subgroup (e.g., [91](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B91 \"\"), [96](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B96 \"\")). We found no reviews dedicated to differences in relationships between nature and health by gender, ethnicity, or socioeconomic position.\\n\\nGiven this variety in method, aims, and focus, we find it interesting that there was strong agreement about the methodological state of the art. Reviews commonly concluded that the field remains dominated by observational study designs. Reviews agreed that too few primary studies have been carried out in a consistent and rigorous way to establish the causality of relationships between contact with nature and health. They agreed, too, that few primary studies have explored how effects may vary by population subgroup, by type of natural environment, or by type of contact with nature. Many reviews commented that consistent and objective measurement of both exposure to nature and health-related outcomes remains elusive.\\n\\nWe identified three weaknesses in the reviews with specific relevance to this field. First, search strategies did not always address the variety of environments or settings that count as “natural.” It is necessary to enter multiple terms into the literature search to avoid missing important work. For example, urban parks may be described by one or more of park, green space, greenspace, green areas, open space, recreational space, natural space, natural environment, etc. Building a review of relevant literature on a search for “green space” or “park” alone, for example, is inadequate.\\n\\nSecond, reviews from individual-based disciplines such as psychology tended to ignore evidence from population-based disciplines such as epidemiology, and vice versa. A great strength of this field is that evidence exists to describe benefits of contact with nature at multiple levels, from laboratory experiments tracking individuals\\' physiological reactions to viewing natural scenes through to studies of differences in population mortality rates between more and less green cities. Each level and scale of study provides important components in understanding what contact with nature can and cannot do for human health.\\n\\nThird, the variety of health outcomes used in primary studies was not well addressed. When reviews try to synthesize results from outcome measures that are sensitive to contact with nature in different ways, and for different durations, messages become clouded. The pooling of results from heterogeneous outcome measures may be motivated by a lack of multiple studies using consistent measures and study designs. However, failure to appreciate differences among outcome measures leads to mischaracterization of the evidence base. Heterogeneity in outcome measures used in primary studies perhaps explains the relatively small number of reviews that attempted a pooled analysis. The body of reviews consequently tells us little about effect size.\\n\\nOverall, the reviews generally agreed that beneficial effects from contact with nature do occur and that these effects are plausibly connected to the mechanisms proposed in guiding theory. However, most of the evidence covered by the reviews related to intermediate health-related outcomes such as amount of physical activity, amount of social contacts, changes in physiological activity (e.g., cardiovascular, neuroendocrine, and musculoskeletal changes characteristic of stress reduction), changes in emotional states (e.g., increased happiness, decreased anger), and changes in cognitive capability (e.g., performance on standardized tests of executive attention) rather than to disease states or measures of mortality. The reviews found less evidence that traced full pathways from contact with nature, to measures reflecting the operation of the given mechanism(s), and on to longer-term outcomes. Thus, it is unsurprising that the reviews generally suggest that the evidence is not yet good enough to say when, where, and for whom given effects will occur or how large or long-lasting they will be.\\n\\nPATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nContact with nature may affect health via multiple pathways. Pathways that have received relatively large amounts of research attention involve air quality, physical activity, social cohesion, and stress reduction. We describe each of these pathways and indicate some of the complexities involved in drawing conclusions about its role, including variation in association across people, activities, and characteristics of the nature under study. The pathways emphasize different aspects of nature, as physical environment, as setting for (individual and social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously and affect one another, a point to which we return at the end of this section. The different pathways and possibilities for effect modification by individual or contextual variables are illustrated in [Figure 1](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1 \"\").\\n\\nFigure 1Some pathways through which the natural environment can affect the health of broad segments of populations. Four of the pathways go through contact with nature, whereas two others go directly from the natural environment to air quality and stress, respectively, implying that the natural environment may affect health without an individual or group consciously engaging with nature as such. Associations between variables at the different steps in a given pathway are subject to modification by characteristics of the people or the context. The two-headed arrow between the natural environment and contact with nature acknowledges that these are joined in a reciprocal relationship. The two-headed arrows between the variables designating pathways (air quality, physical activity, social contacts, and stress) also speak to their reciprocal relatedness; however, each may be related with all the others and not only with the one adjacent. Abbreviations: CHD, coronary heart disease; CVD, cardiovascular disease.\\n\\n[![                   Figure 1\\u2002                ](https://www.annualreviews.org/docserver/ahah/fulltext/publhealth/35/1/pu350207.f1_thmb.gif)\\\\\\\\\\n\\\\\\\\\\nFigure 1\\u2002\\\\\\\\\\n\\\\\\\\\\n\\\\\\\\\\nClick to view](https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.gif) [Download as PowerPoint](https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.ppt?mimeType=application/vnd.ms-powerpoint)\\n\\nAir Quality\\n\\nTrees, shrubs, and other vegetation may affect ambient air quality and, through it, human health and well-being. There are both positive and negative impacts. Trees and other vegetation may reduce levels of some pollutants, including gases and particulate matter (PM), but they may also contribute to air pollution by releasing hydrocarbons. Some trees and plants release pollen, aggravating allergies. Finally, trees improve air quality indirectly when they cool urban environments and reduce building energy demand.\\n\\nTrees and other vegetation can reduce levels of gaseous air pollutants \\\\[e.g., ozone, oxides of nitrogen (NOx), oxides of sulfur\\\\] and PM ([37](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B37 \"\")). For gases, the primary mechanisms of action are uptake by leaf stomata, absorption, and adsorption to plant surfaces. PM removal occurs through deposition on leaves and other plant surfaces ([7](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B7 \"\")). However, most PM is resuspended to the atmosphere, washed off by rain, or dropped to the ground ([100](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100 \"\")). Empirical studies (e.g., [34](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B34 \"\"), [113](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B113 \"\")) and modeling studies (e.g., [103](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B103 \"\"), [120](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B120 \"\")) suggest that urban tree canopy generally reduces air pollution levels by no more than a few percentage points, and often far less, although some results suggest more efficient removal of PM ([59](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B59 \"\"), [63](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B63 \"\")) and certain volatile organic compounds (VOCs) ([70](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B70 \"\")). Because trees may reduce air movement, especially in restricted spaces such as urban “canyons,” they may impede the localized dispersion of pollutants. Local factors such as the density, species composition, and age of the tree canopy, the concentration of air pollutants, and the length of the in-leaf season influence the extent of pollutant removal.\\n\\nPlants may also affect indoor air quality—an important observation because people in developed nations may spend as much as 90% of their time indoors. VOCs such as benzene and formaldehyde may derive from furniture, carpets, cleaning agents, paint, and other sources. Indoor plants, especially such species as English ivy and spider plant, have been shown to reduce levels of many VOCs ([81](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B81 \"\"), [140](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B140 \"\")). Bacteria in the soil may account for some VOC scavenging attributed to the plants ([102](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B102 \"\")).\\n\\nIn contrast to pollutant removal, trees can also be a source of hydrocarbons, including isoprene and terpenes, with considerable variation by species ([9](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B9 \"\")). These biogenic hydrocarbons may function as precursors of ozone and secondary organic aerosols ([20](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B20 \"\"), [74](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B74 \"\")). Modeling studies have assessed the relative contribution of biogenic emissions to pollution levels (e.g., [112](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B112 \"\")). Results vary depending on the species of trees in a canopy, local atmospheric chemistry (especially levels of other precursors, such as NOx), local weather, and other factors.\\n\\nTrees, grasses, and other plants release pollens, which can aggravate allergies and asthma in susceptible people ([18](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B18 \"\"), [27](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B27 \"\")). The culprits vary with geography but include ragweed, grasses (e.g., Timothy, Bermuda, bluegrass), and trees such as catalpa and walnut. In cities that have favored trees that are heavy pollen producers, the health impact may be especially significant ([19](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19 \"\")). A study of African American and Dominican children in New York City found a small but significant association between tree canopy extent and asthma and allergic sensitization ([83](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B83 \"\")). Hence, in some circumstances, the allergenic role of trees may eclipse their ability to improve health by reducing air contaminants.\\n\\nVegetation, especially trees, may also indirectly benefit air quality. During warm weather, trees reduce summer air conditioning demand by shading and hence cooling buildings and through the cooling effects of evapotranspiration. This effect, in turn, reduces energy demand, which, in areas served by coal-fired power plants, reduces air pollution derived from coal combustion, though not necessarily at the same location ([1](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B1 \"\")). During cold weather, the reverse can happen. In a simulation study in Sacramento, trees reduced the need for cooling energy in summer about three times more than they increased the need for warming energy in winter ([114](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B114 \"\")). The monetary benefits of energy savings related to trees may exceed those of the pollutant removal ([13](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B13 \"\")).\\n\\nThe overall impact of vegetation on air quality is therefore a function of several processes, operating in opposing directions: hydrocarbon emissions, pollen production, pollutant uptake, and effects on energy demand. Careful selection of species, design of planting configurations with regard to wind, shade, and other impacts, and maintenance of urban vegetation can optimize the beneficial effects on air quality ([30](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B30 \"\"), [100](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100 \"\")).\\n\\nPhysical Activity\\n\\nPhysical activity promotes physical and mental health across the life span ([10](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B10 \"\"), [61](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B61 \"\")). Recent evidence suggests that the health benefits of increased physical activity are largest among those who were initially doing the least ([104](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B104 \"\")). The outdoor environment may influence how physically active an individual is by offering suitable spaces for certain types of activities. It may also attract people outdoors because of the experiences it offers. Such outings ordinarily entail some form of physical activity, usually walking.\\n\\nAn important precondition for the use of natural environments for physical activity is individuals\\' (perceived) safety ([62](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B62 \"\")). Although there are possible negative effects associated with physical activity (e.g., sports injuries) as well as with being in a natural environment (e.g., Lyme disease from tick bites), most of these effects are not specific to physical activity in a natural environment.\\n\\nGreen space is only one part or aspect of the physical environment relevant for physical activity. Which environmental characteristics promote or hamper physical activity may depend strongly on the type of activity at hand ([5](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B5 \"\")). Three broad activity domains may be identified: work (including study), active transport (walking, cycling), and leisure (recreation, sport). Within the work domain, the greenness of the setting is thought to be of little importance for the amount of physical activity. The same is not true for active transport. Natural features may lead people to favor walking or cycling over other transport modes by making routes to destinations more attractive; however, distance to destination, availability of suitable infrastructure (e.g., sidewalks, bicycle paths), and safety are more important factors ([55](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55 \"\")). The evidence for association between green space and active transport (walking and/or cycling) is mixed, and this heterogeneity has been well summarized by recent systematic reviews ([40](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B40 \"\"), [78](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B78 \"\")). Reasons for (noncausal) negative associations may be that large amounts of green space tend to go together with (a) greater distances to destinations, (b) higher levels of car ownership, and (c) better availability and lower cost of car parking spaces near one\\'s home ([28](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B28 \"\"), [55](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55 \"\")).\\n\\nThe importance of natural environments for fostering physical activity may vary by population subgroup. Children are perhaps the most commonly studied subgroup in this context, but again results are mixed. In one review ([29](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B29 \"\")), ∼40% of the studies in which environmental characteristics were objectively measured showed park access or vegetation to be positively associated with children\\'s physical activity levels; in the other 60% of the studies, no association was observed. A further systematic review ([35](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B35 \"\")) concluded that for (young) children the safety of the environment as perceived by their parents was an important moderating factor. Results from studies of older people are also mixed; two recent systematic reviews arrived at different conclusions. One ([128](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B128 \"\")) reviewed studies on the physical environment in general and concluded that there was no clear relationship between green space (and most other physical environmental characteristics) and physical activity of older people. The other specifically focused on green space, however, and it observed that seven out of eight studies showed a positive relationship between the greenness of the living environment and physical activity levels of older people ([17](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B17 \"\")). It also concluded that the perception of safety is an important moderating factor.\\n\\nRelatively little attention has been paid to the relevance of specific environmental characteristics, such as the type of greenery or the quality of the open space. Results are again mixed. One study ([46](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B46 \"\")) concluded that very good access to large, very attractive public open space was associated with higher levels of walking. Another ([56](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B56 \"\")) by contrast observed no relationship between access to large, high-quality urban green spaces and recreational physical activity. A third study ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\")) observed a relationship of quality (but not quantity) of streetscape greenery with “green” activity, though not with total physical activity. Finally, recent results suggest that community gardening is associated with a lower body mass index ([141](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B141 \"\")).\\n\\nGiven that physical activity is assumed to be an important pathway joining nature with health, we find it surprising that few studies have formally investigated the extent to which any association between nature and health might be mediated by physical activity levels. Of four studies done ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\"), [88](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B88 \"\"), [109](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B109 \"\"), [118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")), only one ([118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")) concluded that physical activity (more specifically recreational walking) was indeed an important mediator.\\n\\nFinally, we note that most of the studies referred to in this overview have been cross-sectional in nature. Hence, the direction of observed relationships remains open to alternative explanations. For example, some people may choose a highly car-dependent (and presumably more green) living environment because they are not inclined to be physically active anyway ([32](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B32 \"\")).\\n\\nSocial Cohesion\\n\\nMuch as for physical activity, abundant research has documented positive associations between social relationships and health and well-being ([57](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B57 \"\"), [97](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B97 \"\")). Such salutary associations have also been observed for positive relationships specifically within the neighborhood ([110](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110 \"\")). A variety of terms have been introduced to reflect the potential value of social relationships in this context, including social capital, social support, social cohesion, and sense of community. Although these terms are often used interchangeably ([4](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4 \"\"), [110](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110 \"\")), we draw a distinction here between social capital and social cohesion. Social capital comprises primarily those resources available to an individual through his or her social connections, which may be activated in times of need. In contrast, social cohesion refers to shared norms and values, the existence of positive and friendly relationships, and feelings of being accepted and belonging (cf. 36). We prefer to use the term social cohesion here because it is more a characteristic of neighborhoods than of individuals ([4](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4 \"\")) and so more likely to be influenced by physical characteristics of the neighborhood, such as the availability and quality of green space and natural elements.\\n\\nUnlike physical activity, the environmental correlates of social cohesion have received little research attention thus far. Generally, the few studies available suggest a positive relationship between social cohesion and natural environments ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\"), [38](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B38 \"\"), [85](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85 \"\"), [118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")). Sugiyama et al. ([118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")), for example, found perceived social coherence and local social interaction to be associated with the perceived greenness of the neighborhood. De Vries et al. ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\")) found an association between streetscape greenery and perceived social cohesion at the neighborhood scale, both for the quantity and, even more strongly, for the quality of greenery.\\n\\nSocial cohesion within a neighborhood does not lend itself to experimental research, which makes it difficult to determine whether relations with environmental features are causal. A few studies have, however, taken advantage of circumstances that likened a natural experiment. Researchers in Chicago ([77](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77 \"\")) took advantage of quasi-random assignment of public housing residents to dwelling units in architecturally similar high-rise buildings with varying amounts of vegetation outside. They found a positive association between the presence of trees and grass on the use of common spaces and informal social contact with neighbors. Moreover, the relationship between greenery and social contacts appeared to be mediated by the use of the common spaces.\\n\\nThe research in Chicago ([77](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77 \"\")) also showed that social contact was positively related to one\\'s sense of safety. Subsequent studies showed that residents with more trees and grass around their buildings displayed less aggressive behavior, and their buildings were associated with fewer crimes ([75](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75 \"\"), [76](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76 \"\")). More recent research suggests similar positive effects of greening vacant lots, especially a reduction in gun assaults and disorderly conduct ([14](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14 \"\")).\\n\\nOther attributes of the environment may moderate any association between natural features and social cohesion. Arguably, local parks must be well maintained and provide attractive recreational facilities to realize their full potential in developing social ties ([71](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B71 \"\")). Although green space generally is positively associated with feelings of safety, in dense urban areas enclosed green spaces may reduce such feelings ([84](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B84 \"\")). Similarly, trees in the public realm have been associated with reduced crime rates, but small trees on private lots have been associated with increased crime rates, presumably because these trees make it more difficult to observe criminal activity ([31](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B31 \"\")). Some natural settings, such as community gardens, incorporate social ties almost by definition. In one study, older allotment gardeners reported having more contacts with friends and felt less lonely than did nongardening neighbors in the same age category ([131](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B131 \"\")).\\n\\nThe question remains whether social cohesion, sense of safety, aggressive behavior, and crime rates mediate an eventual relationship between contact with nature and health. Results from a few cross-sectional studies bear on this point. One found that social cohesion partially mediated the relationship between perceived neighborhood greenness and mental health ([118](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118 \"\")). Another concluded that feelings of loneliness and perceived shortage of social support partially mediated the relationship between the amount of green space within one kilometer and overall health ([85](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85 \"\")). A third found that social cohesion mediated relationships between quantity and quality of streetscape greenery and both overall health and mental health ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\")). In contrast, Francis et al. ([39](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B39 \"\")) found neither sense of community nor social support to be an important mediator of the relationship between the quality of public open space and mental health. No studies were identified on mediation by aggressive behavior, fear of crime, and/or crime rates.\\n\\nStress Reduction\\n\\nBy helping people maintain adaptive resources needed to meet the demands of life, nature can reduce risk of illnesses involving chronic stress, as well as promote a range of intermediate outcomes such as increased subjective well-being. It can do so in two general ways. First, natural areas and features can reduce exposure to challenging environmental conditions by increasing distance to stressors and/or decreasing their perceptual salience. For example, green spaces between residences and heavily trafficked roads can reduce occupant noise annoyance ([99](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B99 \"\")), vegetation can conceal displeasing structures ([115](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B115 \"\")), and landscaping around housing can help residents maintain privacy and avoid feelings of crowding ([23](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B23 \"\")).\\n\\nSecond, nature can help people restore their adaptive resources. Escape from physical and social stressors has long been described as an important motive for recreation in natural areas ([58](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B58 \"\"), [72](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72 \"\")). Nature\\'s restorative quality does not, however, depend only on an absence of stressors; its restorative quality is also defined in positive terms. Another persistent motive for outdoor recreation has been appreciation of nature—for beautiful scenery, symbolic qualities, and other valued attributes ([72](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72 \"\")). Push and pull motives also work in tandem in contexts other than outdoor recreation, notably the residential context. For example, residential location decisions commonly reflect efforts to both minimize stressful exposures and enhance access to restorative amenities, including green (or blue, i.e., water) areas ([51](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B51 \"\")).\\n\\nThis motive combination appears in two theories about how nature can promote more rapid and complete restoration than other environments can. They offer contrasting views on how restoration can proceed once a person has gained psychological distance from threats and other demands. Psychoevolutionary theory holds that, for a person experiencing acute stress, nature contact can very rapidly evoke positive affect, which in turn blocks negative thoughts and feelings and fosters reduction of physiological activation ([126](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B126 \"\"), [127](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B127 \"\")). Evolution purportedly conserved this functional aesthetic response because more rapid recovery from acute stress would have helped proto-humans better prepare for the next survival task. In contrast, attention restoration theory holds that effortless attention engaged by intrinsically interesting aspects of nature enables rest for a fatigued neurocognitive inhibitory mechanism engaged when willfully directing attention ([67](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67 \"\"), [68](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68 \"\")). People must inhibit task-irrelevant stimuli as they direct their attention at work and in many other circumstances. Fatigue of this directed attention capability occurs commonly, undermines effective action, and can increase susceptibility to stress ([68](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68 \"\")).\\n\\nInformed by one or both of these theories, true and quasi-experiments done in laboratory and field settings have assessed diverse affective, cognitive, and physiological effects of more and less natural comparison conditions, realized over varying but generally brief time spans after a naturalistic or experimental induction of a need for restoration. Published studies generally report some restorative advantage of nature, and by 2004, reviewers had judged the evidence for restorative effects of nature to be strong ([54](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54 \"\")). More recently, methodological heterogeneity led other reviewers ([11](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B11 \"\")) to include only 3–6 studies in quantitative syntheses for each of several outcomes. They concluded, nonetheless, that the available studies provided reliable evidence of reductions in self-reported anger, fatigue, anxiety, and sadness and an increase in feelings of energy. They also found tentative evidence of enhanced attention. Conclusions regarding physiological effects were limited by a lack of studies that had the desired design features. Studies done since that 2010 review have further expanded the body of experimental evidence in several directions: additional comparison conditions \\\\[e.g., more or less open vegetation ([45](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B45 \"\")); encountered in different ways, e.g., work site desktop relaxation packages ([60](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B60 \"\"))\\\\], alone or in company ([64](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B64 \"\")), and in additional subpopulations \\\\[e.g., children with attention deficit disorder (ADD) ([121](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121 \"\")), with effects registered using additional measurement techniques (e.g., cortisol; [129](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B129 \"\"))\\\\].\\n\\nOther research assumes cumulative health effects of more effective restoration on many occasions over time. That work is bolstered by studies that situate repeated contact with nature into an ongoing process of self-regulation. Such studies recognize that some people learn that natural settings are more likely than other settings to be restorative. Over time, they apply this knowledge to better manage adaptive resources such as attentional capacity ([69](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B69 \"\"), [73](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B73 \"\"), [116](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B116 \"\")). When and how that learning begins remain understudied, but childhood experience appears influential for environmental attitudes measured in later life ([133](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B133 \"\"), [136](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B136 \"\")). Some research does suggest that restorative childhood contact with nature can cumulatively provide benefits with far-reaching developmental significance. Contact with nature may for example improve attentional function in children with ADD ([121](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121 \"\")) and enhance self-discipline in children without a diagnosis ([122](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B122 \"\")).\\n\\nObservational studies commonly cite nature\\'s cumulative stress-reducing or restorative effects as one plausible pathway by which residential green space might affect perceived health ([26](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26 \"\"), [87](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87 \"\")), diverse forms of morbidity ([86](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86 \"\")), and death from circulatory disease and other causes ([94](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94 \"\")). To date, however, most studies with individual data have not directly addressed a stress-reduction pathway owing to a lack of measures suitable for assessing mediation. One early quasi-experiment did however assess mediation with reference to attention restoration ([76](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76 \"\")), and some recent surveys have begun to address this issue with self-report measures ([25](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25 \"\"), [117](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B117 \"\")). Another study has considered variation in the level of cortisol as a biomarker of chronic stress in members of a community sample living in more or less green circumstances ([134](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B134 \"\")); such a measure could serve tests of mediation of the effect of nature on stress-related illnesses.\\n\\nSome studies have framed nature as a stress buffer, which has entailed estimating the interactive effect of stressful demands and access to nature on some health outcome. Several studies focused on nature in the residential context are illustrative. In a study done in rural New York state, conflicts at school experienced during the preceding three months were less strongly associated with psychological distress in children who had more nature in and around the home ([135](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B135 \"\")). In a Dutch study, the relationships between stressful life events in the previous three months and both health complaints and perceived general health were weaker among those with more green space within 3 km of the home ([130](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B130 \"\")). In an ecological study covering the population of England, high income deprivation had a weaker association with all-cause and circulatory disease mortality among people living in areas with relatively large amounts of green space ([94](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94 \"\")).\\n\\nIn sum, substantial evidence speaks to the potential benefits of contact with nature for avoiding health problems traceable to chronic stress and attentional fatigue; however, the greater part of this evidence concerns the short-term restorative benefits of single encounters with or experiences in nature.\\n\\nThe Pathways Intertwine\\n\\nDiscussions of air quality, physical activity, social cohesion, and stress-reduction pathways emphasize different aspects of nature: as physical environment, as setting for (individual or social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously, as illustrated in [Figure 1](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1 \"\").\\n\\nMost individual studies have focused on one particular pathway from nature to health, but some research has addressed combinations involving two or more of them. Much of this work has recognized links between physical activity and stress reduction. People commonly engage in physical activity not only or even primarily because it will serve their health in the long run, but also because it helps them to feel good in the short run, sometimes by reducing tension and stress. Conversely, people who want to enter a natural environment for restoration ordinarily must engage in some form of physical activity to do so. Accordingly, experiments have found “green exercise” more psychologically beneficial than the same exercise in settings with relatively little nature ([92](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B92 \"\"), [105](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B105 \"\")). Thus, being active in natural settings may yield health benefits over and above the benefits of physical activity in other environments (for a meta-analysis, see [123](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123 \"\")). Conversely, a person walking or running along city streets may have to endure aversive conditions that reduce the benefits of the activity itself ([49](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49 \"\")).\\n\\nMultiple pathways may be purposefully combined in cultural practices that regularly bring people in contact with nature. For example, community gardening may promote social contacts during moderate physical activity that also supports restoration from stress associated with work or other demands. The Japanese practice of Shinrin-yoku, or forest-bathing, involves beliefs about the salutary values of certain substances in the air, and it entails behaviors that ordinarily promote stress reduction (e.g., distancing oneself from everyday demands, adopting a meditative stance) ([124](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B124 \"\")).\\n\\nSome cultural practices that engage multiple pathways may however not be salutary for all population subgroups. For example, in some countries, many households maintain a simple, inexpensive leisure home in the countryside, to which family members ordinarily travel together during vacation periods; however, as a domestic setting, the leisure home may also impose unwanted demands and on some household members more than others. Swedish research found that, after several years of follow-up, employed men who owned a leisure home had lower odds of retiring early for health reasons ([50](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B50 \"\")); however, this prospective association did not hold for women. Indeed, among highly educated and highly paid women, the likelihood of early retirement for health reasons was greater if they also owned a leisure home. Other studies have also indicated a potential gender difference in the nature-health relationship (e.g., [107](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B107 \"\")).\\n\\nMETHODOLOGICAL CHALLENGES\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nIn addition to the usual methodological concerns in experimental and epidemiologic research, we must tackle a litany of specific methodological challenges if we are to develop our understanding of the degree to which, how, and under which circumstances contact with nature affects human health and well-being.\\n\\nMeasuring Exposure to Nature\\n\\nContact with nature challenges definition and control in field and laboratory experiments, and it is even more difficult to assess in free-living populations. Studies at population level typically assess exposure in one of three ways: assessments of exposure by how much nature there is in, or close to, the participants\\' area of residence; survey questions about how much time, and/or how often, people visit natural environments; and objective measures of contact via GPS (global positioning systems) technology. Each method has problems; that people live near natural spaces, report visiting them, or position themselves spatially within them does not mean that individuals actually have had contact with nature in a way that affects their health. None of these measures includes visual contact with nature from, for example, windows at home or in the workplace, which may also have beneficial effects ([66](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B66 \"\")). Furthermore, these measures typically miss fine details of exposure that may be important, such as the timing of exposure (e.g., for many environmental exposures, specific windows of vulnerability exist across the life span), the seasonality of exposure (e.g., the role of deciduous trees being in leaf), the quality of the nature (e.g., area in mature trees versus immature trees versus shrubs versus lawn), and the duration of exposure.\\n\\nMeasuring Outcomes\\n\\nThe other end of the equation between natural environment and health is the assessment of health itself. Plausible health impacts are varied and multiple, positive and negative, psychological and physiological, short term and/or long term. This plurality means many different health measures can be used, which, in turn, makes it difficult to achieve a coherent body of research. There is a particular challenge in bridging what we know about effects of contact with nature from small-scale, shorter-term experimental studies and what we might expect to observe as effects in the real world at the population level. For example, it is difficult to determine what the fall in blood pressure on viewing nature, established in experimental studies, might mean for rates of heart disease among regular visitors to national parks. There is no simple solution to this challenge and no one clearly superior set of instruments or measurements that are suited to use in all settings and studies.\\n\\nUnderstanding Mechanisms\\n\\nUnderstanding how any relationship between nature and health happens can aid interventions that promote possible benefits. It is also vital for specifying who might benefit most and least from the relationship. The challenge is that, as we have noted, the mechanisms by which nature might affect health are multiple and synergistic. They likely vary in significance within a single contact with nature, between contacts, across the life course, between population subgroups, between environment types and across cultures. Understandings of mechanisms being developed in the relatively controlled conditions of experiments should eventually help epidemiologists to form better hypotheses about the variation in associations they could expect at a population level.\\n\\nDemonstrating Causality at a Population Level\\n\\nPositive, short-term effects of contact with nature on affect, cognition, and physiology have been reasonably well established in laboratory and field experiments. However, cross-sectional designs still dominate studies of long-term health outcomes measured in populations. The vulnerability of these designs to confounding and reverse causality is a particular problem. The likelihood of contact with nature is strongly patterned by socioeconomic, ethnic, age, and cultural characteristics, which are, themselves, linked to health. Richardson et al. ([108](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108 \"\")) provide a fine example of the potential for confounding factors to obscure relationships between green space and health at a population level.\\n\\nBoth experimental and longitudinal observational designs are potential routes to better evidence for a causal relationship among free-living populations. For studies of nature and health, however, both types of study impose specific challenges. Experimental studies at a population level are hard to perform. Manipulating environments or people is difficult and expensive. Scientists often must rely on public agencies or authorities to fund and deliver environmental changes, such as the creation of a new park or trail. It can also be difficult to establish and maintain control sites or populations, and opportunities to randomize the receipt of environmental interventions to different communities are rare. Useful results have emerged from quasi-experimental and before-after studies that capture some of the attributes of true experiments ([14](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14 \"\"), [75](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75 \"\")). The timescale for effects is also often a constraint. Funding to follow-up intervention studies is rarely longer than 3–5 years, but effects at a population level (perhaps even intergenerational effects) may take longer to establish.\\n\\nResearch on nature and health has been undertaken within different scientific paradigms. Attitudes toward the level of proof for an association, indeed attitudes toward the very idea of “proof,” vary between paradigms and are contested within them. Biomedical research, for example, often places great emphasis on low p-value thresholds for acceptance of an association. Frumkin ([43](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B43 \"\")) recently suggested, however, that the application of stringent p-value thresholds needs careful and explicit reconsideration in studies of nature and health. Moving from partial evidence to evidence-based recommendations regarding nature contact is a thorny problem.\\n\\nFor their part, existing panel or cohort studies that have good measures of health and well-being rarely also carry detailed information on contact with natural environments because this topic is relatively new to public health and epidemiology. Moreover, data sets that can also capture the change in or development of natural environments over time are rare.\\n\\nEffect Size\\n\\nEvidence suggests that contact with nature has a small effect on health and well-being in comparison to structural characteristics such as income, employment, or education, and behavioral characteristics such as smoking. The signal-to-noise ratio in population-level studies is often small, and these studies need to be well designed and of sufficient power to identify any benefits. This does not mean that such studies are not worth doing, however; a small beneficial effect on a large number of people is a large contribution to population health ([111](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B111 \"\")).\\n\\nPRIORITIES FOR FURTHER RESEARCH\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nThroughout this review we have identified issues that warrant further research, and in the previous section we have identified methodological challenges that must be met. Here, we try to highlight some specific priorities for the field.\\n\\nFirst, we see a need to seek, create, and take opportunities for population-level experimental studies when they arise, within an understanding of their limits. Doing so will assist in demonstrating the degree to which nature-health relations have meaning for population health. We should also work to incorporate questions about contact with nature in ongoing longitudinal studies and ensure that high-quality data on change in type, quality, and availability of nature are maintained into the future and created retrospectively for the past. These additions would permit studies consistent with both cohort and life-course perspectives on relationships between nature and health.\\n\\nSecond, research on which types of nature are relatively effective for particular outcomes, and which qualities of those types are highly relevant, may be more fruitful when guided by theoretical ideas about why a particular type or quality of that type is likely to contribute to a particular pathway to health. Natural elements that are effective in improving air quality are not necessarily the same as those best suited to improving social cohesion in a neighborhood or to promoting psychological restoration.\\n\\nThird, with specific regard to the stress pathway, much work remains to be done to rigorously assess theoretical claims regarding the components of experience that sustain attention restoration and stress recovery. To what extent, for example, are beneficial effects dependent on gaining psychological distance from stressful demands versus engaging with positive aspects of the nature encountered? This work will be aided by, among other things, further development of measures of perceived restorative quality in environments, and experimentation that more directly addresses the interplay of stress recovery, attention restoration, and other possible processes through which adaptive resources become renewed (cf. [49](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49 \"\")).\\n\\nFourth, if we acknowledge the competing priorities for funding and investment in health and health care, some research on nature and health might gain from a health economics perspective. If contact with nature is cost-effective as a means to protect and improve population health, it should be resourced and prioritized in preference to other approaches. Arguably, doing so requires knowledge not only about the economic significance of the health benefits generated, but also about the “doses” of nature needed to generate those benefits at the lowest possible cost. Discussions of dose, however, can entail a variety of problems, such as trivialization of contact with nature through neglect of long-term consequences of particularly powerful forms of contact (e.g., life-changing wilderness experiences). The dose metaphor therefore must be handled with care ([137](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B137 \"\")). As with other health-related issues, economic analyses must extend beyond health impacts to account for other benefits. For instance, an urban park may offer not only health benefits, but also benefits such as stormwater management and enhanced property values.\\n\\nFinally, variety between population subgroups in access to, use of, and responses to nature remains persistently underexplored. Spatial, social, economic, racial, cultural, and demographic differences in relationships between nature and health seem highly probable. It may be that relationships between nature and health are implicated in exacerbating or mitigating health inequalities between subgroups, for example. This potential should be thoroughly explored.\\n\\nCONCLUDING COMMENTS\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nWe have provided for a general public health audience an overview of research on how contact with nature relates to health in urbanized societies. We have not covered this body of work comprehensively, but instead have focused on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations, such as the availability of urban parks, the amount of green space in and near residential areas, and the preservation of peri-urban natural areas. Given our public health orientation, we have focused on the conditions of everyday life for the greatest part of the populations of interest. We consequently have hardly touched on the extensive literatures on wilderness experience (for reviews, see 72, [139](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B139 \"\")) and contact with nature in the treatment and management of disability and illnesses such as depression ([47](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B47 \"\")) and breast cancer ([21](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B21 \"\"); see [2](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2 \"\") for a review).\\n\\nDespite such significant omissions, we trust readers will take away an appreciation not only of the diversity and complexity in forms of nature contact and potential benefits thereof, but also of the many challenges faced in characterizing those contacts and benefits. Taken together, the research reviewed does indicate that contact with nature can promote health. The evidence for some benefits, such as short-term restorative effects, is already quite strong. That said, nature contact should not be assumed always and automatically to be good for health; we have more to learn about for whom, when, how, and in which contexts it offers benefits.\\n\\nMuch also remains to be done to help those responsible for environmental policy, design, and management to make realistic assessments of what nature can and cannot do in their domain of activity. Part of this task involves explaining how health benefits might coincide (versus conflict with) other benefits, such as better stormwater management, species preservation, and carbon sequestration. If a particular form of nature contact shows small health benefits, interventions to promote it may still justify public investment if the health benefits combine with other benefits.\\n\\nIn closing, we recognize that many people speak of human-nature relations in moral/ethical and spiritual/religious terms with a view toward preservation of the natural environment. We respect such views. Our observations here regarding human health values should not be understood as the only or even the main bases for arguments regarding protection of habitats, species, and ecosystem integrity.\\n\\ndisclosure statement\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nH. Frumkin is a board member of the US Green Building Council and of the Children and Nature Network. R. Mitchell supervises a doctoral student funded by the UK Forestry Commission and has received research funding from the Forestry Commission in the recent past. The other authors are not aware of any affiliations, memberships, funding, or financial holdings that might be perceived as affecting the objectivity of this review.\\n\\nACKNOWLEDGMENTS\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\nacknowledgments\\n\\nR. Mitchell was funded under a European Research Council grant (ERC-2010-StG Grant 263501).\\n\\nliterature cited\\n\\nGo to section...\\n\\n- [TOP](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1)\\n- [ABSTRACT](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1)\\n- [INTRODUCTION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1)\\n- [DEFINING “NATURE”](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1)\\n- [SOME REASONS FOR THE CURRENT RESEARCH EXPANSION](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1)\\n- [REVIEW OF REVIEWS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1)\\n- [PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1)\\n- [METHODOLOGICAL CHALLENGES](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1)\\n- [PRIORITIES FOR FURTHER RESEARCH](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1)\\n- [CONCLUDING COMMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1)\\n- [disclosure statement](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1)\\n- [ACKNOWLEDGMENTS](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1)\\n- [literature cited](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1)\\n\\n001. AkbariH, KurnDM, BretzSE, HanfordJW. 1.\\u20021997.  Peak power and cooling energy savings of shade trees. Energy Build.25:139–48[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&author=H+Akbari&author=DM+Kurn&author=SE+Bretz&author=JW+Hanford&journal=Energy+Build.&volume=25&pages=139-48&publication_year=1997&)\\n002. AnnerstedtM, WährborgP. 2.\\u20022011.  Nature-assisted therapy: systematic review of controlled and observational studies. Scand. J. Public Health39:371–88[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&author=M+Annerstedt&author=P+W%C3%A4hrborg&journal=Scand.+J.+Public+Health&volume=39&pages=371-88&publication_year=2011&)\\n003. BartonJ, PrettyJ. 3.\\u20022010.  What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. Environ. Sci. Technol.44:3947–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&author=J+Barton&author=J+Pretty&journal=Environ.+Sci.+Technol.&volume=44&pages=3947-55&publication_year=2010&)\\n004. BaumFE, ZierschAM, ZhangG, OsborneK. 4.\\u20022009.  Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. Health Place15:925–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&author=FE+Baum&author=AM+Ziersch&author=G+Zhang&author=K+Osborne&journal=Health+Place&volume=15&pages=925-34&publication_year=2009&)\\n005. BaumanAE, ReisRS, SallisJF, WellsJC, LoosRJ, MartinBW. 5.\\u20022012.  Correlates of physical activity: Why are some people physically active and others not?. Lancet380:258–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&author=AE+Bauman&author=RS+Reis&author=JF+Sallis&author=JC+Wells&author=RJ+Loos&author=BW+Martin&journal=Lancet&volume=380&pages=258-71&publication_year=2012&)\\n006. BeckAM, MeyersNM. 6.\\u20021996.  Health enhancement and companion animal ownership. Annu. Rev. Public Health17:247–57[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&author=AM+Beck&author=NM+Meyers&journal=Annu.+Rev.+Public+Health&volume=17&pages=247-57&publication_year=1996&)\\n007. BeckettKP, Freer-SmithPH, TaylorG. 7.\\u20022000.  The capture of particulate pollution by trees at five contrasting urban sites. Arboric. J.24:209–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&author=KP+Beckett&author=PH+Freer-Smith&author=G+Taylor&journal=Arboric.+J.&volume=24&pages=209-30&publication_year=2000&)\\n008. Bedimo-RungAL, MowenAJ, CohenDA. 8.\\u20022005.  The significance of parks to physical activity and public health: a conceptual model. Am. J. Prev. Med.28:159–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&author=AL+Bedimo-Rung&author=AJ+Mowen&author=DA+Cohen&journal=Am.+J.+Prev.+Med.&volume=28&pages=159-68&publication_year=2005&)\\n009. BenjaminMT, WinerAM. 9.\\u20021998.  Estimating the ozone-forming potential of urban trees and shrubs. Atmos. Environ.32:53–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&author=MT+Benjamin&author=AM+Winer&journal=Atmos.+Environ.&volume=32&pages=53-68&publication_year=1998&)\\n010. BizeR, JohnsonJA, PlotnikoffRC. 10.\\u20022007.  Physical activity level and health-related quality of life in the general adult population: a systematic review. Prev. Med.45:401–15[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&author=R+Bize&author=JA+Johnson&author=RC+Plotnikoff&journal=Prev.+Med.&volume=45&pages=401-15&publication_year=2007&)\\n011. BowlerDE, Buyung-AliLM, KnightTM, PullinAS. 11.\\u20022010.  A systematic review of evidence for the added benefits to health of exposure to natural environments. BMC Public Health10:456[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&author=DE+Bowler&author=LM+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=BMC+Public+Health&volume=10&pages=456&publication_year=2010&)\\n012. BowlerDE, Buyung-AliL, KnightTM, PullinAS. 12.\\u20022010.  Urban greening to cool towns and cities: a systematic review of the empirical evidence. Landsc. Urban Plann.97:147–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&author=DE+Bowler&author=L+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=Landsc.+Urban+Plann.&volume=97&pages=147-55&publication_year=2010&)\\n013. BrackCL. 13.\\u20022002.  Pollution mitigation and carbon sequestration by an urban forest. Environ. Pollut.116:S195–200[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&author=CL+Brack&journal=Environ.+Pollut.&volume=116&pages=S195-200&publication_year=2002&)\\n014. BranasCC, CheneyRA, MacDonaldJM, TamVW, JacksonTD, Ten HaveTR. 14.\\u20022011.  A difference-in-differences analysis of health, safety, and greening vacant urban space. Am. J. Epidemiol.174:1296–306[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&author=CC+Branas&author=RA+Cheney&author=JM+MacDonald&author=VW+Tam&author=TD+Jackson&author=TR+Ten+Have&journal=Am.+J.+Epidemiol.&volume=174&pages=1296-306&publication_year=2011&)\\n015. BratmanGN, HamiltonJP, DailyGC. 15.\\u20022012.  The impacts of nature experience on human cognitive function and mental health. Ann. N.Y. Acad. Sci.1249:118–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&author=GN+Bratman&author=JP+Hamilton&author=GC+Daily&journal=Ann.+N.Y.+Acad.+Sci.&volume=1249&pages=118-36&publication_year=2012&)\\n016. BringslimarkT, HartigT, PatilGG. 16.\\u20022009.  The psychological benefits of indoor plants: a critical review of the experimental literature. J. Environ. Psychol.29:422–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&author=T+Bringslimark&author=T+Hartig&author=GG+Patil&journal=J.+Environ.+Psychol.&volume=29&pages=422-33&publication_year=2009&)\\n017. BroekhuizenK, de VriesSI, PierikFH. 17.\\u20022013. Healthy Aging in a Green Living Environment: A Systematic Review of the Literature. TNO rep. R10154 Leiden: TNO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&author=K+Broekhuizen&author=SI+de+Vries&author=FH+Pierik&publication_year=2013&)\\n018. BrooksGD, BushRK. 18.\\u20022009.  Allergens and other factors important in atopic disease. Patterson\\'s Allergic Diseases LC Grammer, PA Greenberger 73–103 Philadelphia: Lippincott, Williams & Wilkins, 7th ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&author=GD+Brooks&author=RK+Bush&journal=Patterson%27s+Allergic+Diseases&pages=73-103&publication_year=2009&)\\n019. CariñanosP, Casares-PorcelM. 19.\\u20022011.  Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. Landsc. Urban Plann.101:205–14[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&author=P+Cari%C3%B1anos&author=M+Casares-Porcel&journal=Landsc.+Urban+Plann.&volume=101&pages=205-14&publication_year=2011&)\\n020. ChameidesWL, LindsayRW, RichardsonJ, KiangCS. 20.\\u20021989.  The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. Science241:1473–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&author=WL+Chameides&author=RW+Lindsay&author=J+Richardson&author=CS+Kiang&journal=Science&volume=241&pages=1473-75&publication_year=1989&)\\n021. CimprichB. 21.\\u20021993.  Development of an intervention to restore attention in cancer patients. Cancer Nurs.16:83–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&author=B+Cimprich&journal=Cancer+Nurs.&volume=16&pages=83-92&publication_year=1993&)\\n022. ColferCJP, SheilD, KishiM. 22.\\u20022006. Forests and Human Health: Assessing the Evidence Bogor, Indones.: Cent. Int. For. Res [http://www.cifor.org/publications/pdf\\\\_files/OccPapers/OP-45.pdf](http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&author=CJP+Colfer&author=D+Sheil&author=M+Kishi&publication_year=2006&)\\n023. DayLL. 23.\\u20022000.  Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. J. Plan Educ. Res.19:265–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&author=LL+Day&journal=J.+Plan+Educ.+Res.&volume=19&pages=265-75&publication_year=2000&)\\n024. de VriesS, ClaßenT, Eigenheer-HugS-M, KorpelaK, MaasJ. 24.\\u2002 et al.2011.  Contributions of natural environments to physical activity.  See Ref. 98 205–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&author=S+de+Vries&author=T+Cla%C3%9Fen&author=S-M+Eigenheer-Hug&author=K+Korpela&author=J+Maas&pages=205-43&publication_year=2011&)\\n025. de VriesS, van DillenSME, GroenewegenPP, SpreeuwenbergP. 25.\\u20022013.  Streetscape greenery and health: stress, social cohesion and physical activity as mediators. Soc. Sci. Med.94:26–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&author=S+de+Vries&author=SME+van+Dillen&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Soc.+Sci.+Med.&volume=94&pages=26-33&publication_year=2013&)\\n026. de VriesS, VerheijRA, GroenewegenPP, SpreeuwenbergP. 26.\\u20022003.  Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. Environ. Plann. A35:1717–31[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&author=S+de+Vries&author=RA+Verheij&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Environ.+Plann.+A&volume=35&pages=1717-31&publication_year=2003&)\\n027. DellaValleCT, TricheEW, LeadererBP, BellML. 27.\\u20022012.  Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. Epidemiology23:55–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&author=CT+DellaValle&author=EW+Triche&author=BP+Leaderer&author=ML+Bell&journal=Epidemiology&volume=23&pages=55-63&publication_year=2012&)\\n028. Den HertogF, BronkhorstM, MoermanM, Van WilgenburgR. 28.\\u20022006. De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit \\\\[The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity\\\\]. Amsterdam: EMGO Inst.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&author=F+Den+Hertog&author=M+Bronkhorst&author=M+Moerman&author=R+Van+Wilgenburg&publication_year=2006&)\\n029. DingD, SallisJF, KerrJ, LeeS, RosenbergDE. 29.\\u20022011.  Neighborhood environment and physical activity among youth: a review. Am. J. Prev. Med.41:442–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&author=D+Ding&author=JF+Sallis&author=J+Kerr&author=S+Lee&author=DE+Rosenberg&journal=Am.+J.+Prev.+Med.&volume=41&pages=442-55&publication_year=2011&)\\n030. DommJ, DrewR, GreeneA, RipleyE, SmardonR, TordesillasJ. 30.\\u20022008.  Recommended urban forest mixtures to optimize selected environmental benefits. EnviroNews: Int. Soc. Environ. Bot.14:7–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&author=J+Domm&author=R+Drew&author=A+Greene&author=E+Ripley&author=R+Smardon&author=J+Tordesillas&journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&volume=14&pages=7-10&publication_year=2008&)\\n031. DonovanGH, PrestemonJP. 31.\\u20022012.  The effect of trees on crime in Portland, Oregon. Environ. Behav.44:3–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&author=GH+Donovan&author=JP+Prestemon&journal=Environ.+Behav.&volume=44&pages=3-30&publication_year=2012&)\\n032. EidJ, OvermanHG, PugaD, TurnerMA. 32.\\u20022008.  Fat city: questioning the relationship between urban sprawl and obesity. J. Urban Econ.63:385–404[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&author=J+Eid&author=HG+Overman&author=D+Puga&author=MA+Turner&journal=J.+Urban+Econ.&volume=63&pages=385-404&publication_year=2008&)\\n033. EngelGL. 33.\\u20021977.  The need for a new medical model: a challenge for biomedicine. Science196:129–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&author=GL+Engel&journal=Science&volume=196&pages=129-36&publication_year=1977&)\\n034. EscobedoFJ, NowakDJ. 34.\\u20022009.  Spatial heterogeneity and air pollution removal by an urban forest. Landsc. Urban Plann.90:102–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&author=FJ+Escobedo&author=DJ+Nowak&journal=Landsc.+Urban+Plann.&volume=90&pages=102-10&publication_year=2009&)\\n035. FerdinandAO, SenB, RahurkarS, EnglerS, MenachemiN. 35.\\u20022012.  The relationship between built environments and physical activity: a systematic review. Am. J. Public Health102:e7–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&author=AO+Ferdinand&author=B+Sen&author=S+Rahurkar&author=S+Engler&author=N+Menachemi&journal=Am.+J.+Public+Health&volume=102&pages=e7-13&publication_year=2012&)\\n036. ForrestR, KearnsA. 36.\\u20022001.  Social cohesion, social capital and the neighbourhood. Urban Stud.38:2125–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&author=R+Forrest&author=A+Kearns&journal=Urban+Stud.&volume=38&pages=2125-43&publication_year=2001&)\\n037. FowlerD. 37.\\u20022002.  Pollutant deposition and uptake by vegetation. Air Pollution and Plant Life JNB Bell, M Treshow 43–67 New York: Wiley, 2nd ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&author=D+Fowler&journal=Air+Pollution+and+Plant+Life&pages=43-67&publication_year=2002&)\\n038. FrancisJ, Giles-CortiB, WoodL, KnuimanM. 38.\\u20022012.  Creating sense of community: the role of public space. J. Environ. Psychol.32:401–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&author=J+Francis&author=B+Giles-Corti&author=L+Wood&author=M+Knuiman&journal=J.+Environ.+Psychol.&volume=32&pages=401-9&publication_year=2012&)\\n039. FrancisJ, WoodLJ, KnuimanM, Giles-CortiB. 39.\\u20022012.  Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. Soc. Sci. Med.74:1570–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&author=J+Francis&author=LJ+Wood&author=M+Knuiman&author=B+Giles-Corti&journal=Soc.+Sci.+Med.&volume=74&pages=1570-77&publication_year=2012&)\\n040. FraserSDS, LockK. 40.\\u20022011.  Cycling for transport and public health: a systematic review of the effect of the environment on cycling. Eur. J. Public Health21:738–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&author=SDS+Fraser&author=K+Lock&journal=Eur.+J.+Public+Health&volume=21&pages=738-43&publication_year=2011&)\\n041. FrostSS, GoinsRT, HunterRH, HookerSP, BryantLL. 41.\\u2002 et al.2010.  Effects of the built environment on physical activity of adults living in rural settings. Am. J. Health Promot.24:267–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&author=SS+Frost&author=RT+Goins&author=RH+Hunter&author=SP+Hooker&author=LL+Bryant&journal=Am.+J.+Health+Promot.&volume=24&pages=267-83&publication_year=2010&)\\n042. FrumkinH. 42.\\u20022001.  Beyond toxicity: human health and the natural environment. Am. J. Prev. Med.20:234–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=20&pages=234-40&publication_year=2001&)\\n043. FrumkinH. 43.\\u20022013.  The evidence of nature and the nature of evidence. Am. J. Prev. Med.44:196–97[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=44&pages=196-97&publication_year=2013&)\\n044. GaleaS, VlahovD. 44.\\u20022005.  Urban health: evidence, challenges, and directions. Annu. Rev. Public Health26:341–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&author=S+Galea&author=D+Vlahov&journal=Annu.+Rev.+Public+Health&volume=26&pages=341-65&publication_year=2005&)\\n045. GaterslebenB, AndrewsM. 45.\\u20022013.  When walking in nature is not restorative—the role of prospect and refuge. Health Place20:91–101[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&author=B+Gatersleben&author=M+Andrews&journal=Health+Place&volume=20&pages=91-101&publication_year=2013&)\\n046. Giles-CortiB, BroomhallMH, KnuimanM, CollinsC, DouglasK. 46.\\u2002 et al.2005.  Increasing walking: How important is distance to, attractiveness, and size of public open space?. Am. J. Prev. Med.28:169–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&author=B+Giles-Corti&author=MH+Broomhall&author=M+Knuiman&author=C+Collins&author=K+Douglas&journal=Am.+J.+Prev.+Med.&volume=28&pages=169-76&publication_year=2005&)\\n047. GonzalezMT, HartigT, PatilGG, MartinsenEW, KirkevoldM. 47.\\u20022010.  Therapeutic horticulture in clinical depression: a prospective study of active components. J. Adv. Nurs.66:2002–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&author=MT+Gonzalez&author=T+Hartig&author=GG+Patil&author=EW+Martinsen&author=M+Kirkevold&journal=J.+Adv.+Nurs.&volume=66&pages=2002-13&publication_year=2010&)\\n048. HartigT. 48.\\u20021993.  Nature experience in transactional perspective. Landsc. Urban Plann.25:17–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&author=T+Hartig&journal=Landsc.+Urban+Plann.&volume=25&pages=17-36&publication_year=1993&)\\n049. HartigT, EvansGW, JamnerLD, DavisDS, GärlingT. 49.\\u20022003.  Tracking restoration in natural and urban field settings. J. Environ. Psychol.23:109–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&author=T+Hartig&author=GW+Evans&author=LD+Jamner&author=DS+Davis&author=T+G%C3%A4rling&journal=J.+Environ.+Psychol.&volume=23&pages=109-23&publication_year=2003&)\\n050. HartigT, FranssonU. 50.\\u20022009.  Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. Environ. Plann. A41:82–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&author=T+Hartig&author=U+Fransson&journal=Environ.+Plann.+A&volume=41&pages=82-96&publication_year=2009&)\\n051. HartigT, JohanssonG, KylinC. 51.\\u20022003.  Residence in the social ecology of stress and restoration. J. Soc. Iss.59:611–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&author=T+Hartig&author=G+Johansson&author=C+Kylin&journal=J.+Soc.+Iss.&volume=59&pages=611-36&publication_year=2003&)\\n052. HartigT, MangM, EvansGW. 52.\\u20021991.  Restorative effects of natural environment experiences. Environ. Behav.23:3–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&author=T+Hartig&author=M+Mang&author=GW+Evans&journal=Environ.+Behav.&volume=23&pages=3-26&publication_year=1991&)\\n053. HartigT, van den BergAE, HagerhallCM, TomalakM, BauerN. 53.\\u2002 et al.2011.  Health benefits of nature experience: psychological, social and cultural processes.  See Ref. 98 127–68\\n054. 54.\\u2002Health Counc. Neth2004. Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being. The Hague: Health Counc. Neth., RMNO [http://www.gezondheidsraad.nl/sites/default/files/Nature\\\\_and\\\\_health.pdf](http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&publication_year=2004&)\\n055. HeinenE, van WeeB, MaatK. 55.\\u20022010.  Commuting by bicycle: an overview of the literature. Transp. Rev.30:59–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&author=E+Heinen&author=B+van+Wee&author=K+Maat&journal=Transp.+Rev.&volume=30&pages=59-96&publication_year=2010&)\\n056. HillsdonM, PanterJ, FosterC, JonesA. 56.\\u20022006.  The relationship between access and quality of urban green space with population physical activity. Public Health120:1127–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&author=M+Hillsdon&author=J+Panter&author=C+Foster&author=A+Jones&journal=Public+Health&volume=120&pages=1127-32&publication_year=2006&)\\n057. Holt-LunstadJ, SmithTB, LaytonJB. 57.\\u20022010.  Social relationships and mortality risk: a meta-analytic review. PLoS Med.7:e1000316[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&author=J+Holt-Lunstad&author=TB+Smith&author=JB+Layton&journal=PLoS+Med.&volume=7&pages=e1000316&publication_year=2010&)\\n058. HomeR, HunzikerM, BauerN. 58.\\u20022012.  Psychosocial outcomes as motivations for visiting nearby urban green spaces. Leis. Sci.34:350–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&author=R+Home&author=M+Hunziker&author=N+Bauer&journal=Leis.+Sci.&volume=34&pages=350-65&publication_year=2012&)\\n059. IslamMN, RahmanK-S, BaharMM, HabibMA, AndoK, HattoriN. 59.\\u20022012.  Pollution attenuation by roadside greenbelt in and around urban areas. Urban For. Urban Green.11:460–64[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&author=MN+Islam&author=K-S+Rahman&author=MM+Bahar&author=MA+Habib&author=K+Ando&author=N+Hattori&journal=Urban+For.+Urban+Green.&volume=11&pages=460-64&publication_year=2012&)\\n060. JahnckeH, HyggeS, HalinN, GreenAM, DimbergK. 60.\\u20022011.  Open-plan office noise: cognitive performance and restoration. J. Environ. Psychol.31:373–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&author=H+Jahncke&author=S+Hygge&author=N+Halin&author=AM+Green&author=K+Dimberg&journal=J.+Environ.+Psychol.&volume=31&pages=373-82&publication_year=2011&)\\n061. JanssenI, LeBlancAG. 61.\\u20022010.  Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. Int. J. Behav. Nutr. Phys. Act.7:40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&author=I+Janssen&author=AG+LeBlanc&journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&volume=7&pages=40&publication_year=2010&)\\n062. JanssonM, ForsH, LindgrenT, WiströmB. 62.\\u20022013.  Perceived personal safety in relation to urban woodland vegetation—a review. Urban For. Urban Green.12:127–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&author=M+Jansson&author=H+Fors&author=T+Lindgren&author=B+Wistr%C3%B6m&journal=Urban+For.+Urban+Green.&volume=12&pages=127-33&publication_year=2013&)\\n063. JimCY, ChenWY. 63.\\u20022008.  Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). J. Environ. Manag.88:665–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&author=CY+Jim&author=WY+Chen&journal=J.+Environ.+Manag.&volume=88&pages=665-76&publication_year=2008&)\\n064. JohanssonM, HartigT, StaatsH. 64.\\u20022011.  Psychological benefits of walking: moderation by company and outdoor environment. Appl. Psychol. Health Well-Being3:261–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&author=M+Johansson&author=T+Hartig&author=H+Staats&journal=Appl.+Psychol.+Health+Well-Being&volume=3&pages=261-80&publication_year=2011&)\\n065. KaczynskiAT, HendersonKA. 65.\\u20022007.  Environmental correlates of physical activity: a review of evidence about parks and recreation. Leis. Sci.29:315–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&author=AT+Kaczynski&author=KA+Henderson&journal=Leis.+Sci.&volume=29&pages=315-54&publication_year=2007&)\\n066. KaplanR. 66.\\u20021993.  The role of nature in the context of the workplace. Landsc. Urban Plann.26:193–201[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&author=R+Kaplan&journal=Landsc.+Urban+Plann.&volume=26&pages=193-201&publication_year=1993&)\\n067. KaplanR, KaplanS. 67.\\u20021989. The Experience of Nature: A Psychological Perspective New York: Cambridge Univ. Press\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&author=R+Kaplan&author=S+Kaplan&publication_year=1989&)\\n068. KaplanS. 68.\\u20021995.  The restorative benefits of nature: toward an integrative framework. J. Environ. Psychol.15:169–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&author=S+Kaplan&journal=J.+Environ.+Psychol.&volume=15&pages=169-82&publication_year=1995&)\\n069. KaplanS. 69.\\u20022001.  Meditation, restoration, and the management of mental fatigue. Environ. Behav.33:480–506[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&author=S+Kaplan&journal=Environ.+Behav.&volume=33&pages=480-506&publication_year=2001&)\\n070. KarlT, HarleyP, EmmonsL, ThorntonB, GuentherA. 70.\\u2002 et al.2010.  Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. Science330:816–19[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&author=T+Karl&author=P+Harley&author=L+Emmons&author=B+Thornton&author=A+Guenther&journal=Science&volume=330&pages=816-19&publication_year=2010&)\\n071. KaźmierczakA. 71.\\u20022013.  The contribution of local parks to neighbourhood social ties. Landsc. Urban Plann.109:31–44[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&author=A+Ka%C5%BAmierczak&journal=Landsc.+Urban+Plann.&volume=109&pages=31-44&publication_year=2013&)\\n072. KnopfRC. 72.\\u20021987.  Human behavior, cognition, and affect in the natural environment. Handbook of Environmental Psychology D Stokols, I Altman 783–825 New York: Wiley\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&author=RC+Knopf&journal=Handbook+of+Environmental+Psychology&pages=783-825&publication_year=1987&)\\n073. KorpelaK, HartigT. 73.\\u20021996.  Restorative qualities of favorite places. J. Environ. Psychol.16:221–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&author=K+Korpela&author=T+Hartig&journal=J.+Environ.+Psychol.&volume=16&pages=221-33&publication_year=1996&)\\n074. KrollJH, SeinfeldJH. 74.\\u20022008.  Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. Atmos. Environ.42:3593–624[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&author=JH+Kroll&author=JH+Seinfeld&journal=Atmos.+Environ.&volume=42&pages=3593-624&publication_year=2008&)\\n075. KuoFE, SullivanWC. 75.\\u20022001.  Aggression and violence in the inner city: effects of environment via mental fatigue. Environ. Behav.33:543–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=543-71&publication_year=2001&)\\n076. KuoFE, SullivanWC. 76.\\u20022001.  Environment and crime in the inner city: Does vegetation reduce crime?. Environ. Behav.33:343–67[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=343-67&publication_year=2001&)\\n077. KuoFE, SullivanWC, ColeyRL, BrunsonL. 77.\\u20021998.  Fertile ground for community: inner-city neighborhood common spaces. Am. J. Community Psychol.26:823–51[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&author=FE+Kuo&author=WC+Sullivan&author=RL+Coley&author=L+Brunson&journal=Am.+J.+Community+Psychol.&volume=26&pages=823-51&publication_year=1998&)\\n078. LachowyczK, JonesAP. 78.\\u20022011.  Greenspace and obesity: a systematic review of the evidence. Obes. Rev.12:e183–89[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&author=K+Lachowycz&author=AP+Jones&journal=Obes.+Rev.&volume=12&pages=e183-89&publication_year=2011&)\\n079. LachowyczK, JonesAP. 79.\\u20022013.  Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. Landsc. Urban Plann.118:62–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&author=K+Lachowycz&author=AP+Jones&journal=Landsc.+Urban+Plann.&volume=118&pages=62-69&publication_year=2013&)\\n080. LindheimR, SymeSL. 80.\\u20021983.  Environments, people, and health. Annu. Rev. Public Health4:335–59[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&author=R+Lindheim&author=SL+Syme&journal=Annu.+Rev.+Public+Health&volume=4&pages=335-59&publication_year=1983&)\\n081. LiuY-J, MuY-J, ZhuY-G, DingH, ArensNC. 81.\\u20022007.  Which ornamental plant species effectively remove benzene from indoor air?. Atmos. Environ.41:650–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&author=Y-J+Liu&author=Y-J+Mu&author=Y-G+Zhu&author=H+Ding&author=NC+Arens&journal=Atmos.+Environ.&volume=41&pages=650-54&publication_year=2007&)\\n082. LloydGER, ChadwickJ, MannWN. 82.\\u20021978. Hippocratic Writings Harmondsworth: Penguin\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&author=GER+Lloyd&author=J+Chadwick&author=WN+Mann&publication_year=1978&)\\n083. LovasiGS, O\\'Neil-DunneJP, LuJW, SheehanD, PerzanowskiMS. 83.\\u2002 et al.2013.  Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. Environ. Health Perspect.121:494–500 00e1–6\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&author=GS+Lovasi&author=JP+O%27Neil-Dunne&author=JW+Lu&author=D+Sheehan&author=MS+Perzanowski&journal=Environ.+Health+Perspect.&volume=121&pages=494-500&publication_year=2013&)\\n084. MaasJ, SpreeuwenbergP, van Winsum-WestraM, VerheijRA, de VriesS, GroenewegenPP. 84.\\u20022009.  Is green space in the living environment associated with people\\'s feelings of social safety?. Environ. Plann. A41:1763–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&author=J+Maas&author=P+Spreeuwenberg&author=M+van+Winsum-Westra&author=RA+Verheij&author=S+de+Vries&author=PP+Groenewegen&journal=Environ.+Plann.+A&volume=41&pages=1763-77&publication_year=2009&)\\n085. MaasJ, van DillenSM, VerheijRA, GroenewegenPP. 85.\\u20022009.  Social contacts as a possible mechanism behind the relation between green space and health. Health Place15:586–95[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&author=J+Maas&author=SM+van+Dillen&author=RA+Verheij&author=PP+Groenewegen&journal=Health+Place&volume=15&pages=586-95&publication_year=2009&)\\n086. MaasJ, VerheijRA, de VriesS, SpreeuwenbergP, SchellevisFG, GroenewegenPP. 86.\\u20022009.  Morbidity is related to a green living environment. J. Epidemiol. Community Health63:967–73[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&author=J+Maas&author=RA+Verheij&author=S+de+Vries&author=P+Spreeuwenberg&author=FG+Schellevis&author=PP+Groenewegen&journal=J.+Epidemiol.+Community+Health&volume=63&pages=967-73&publication_year=2009&)\\n087. MaasJ, VerheijRA, GroenewegenPP, de VriesS, SpreeuwenbergP. 87.\\u20022006.  Green space, urbanity, and health: How strong is the relation?. J. Epidemiol. Community Health60:587–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&author=S+de+Vries&author=P+Spreeuwenberg&journal=J.+Epidemiol.+Community+Health&volume=60&pages=587-92&publication_year=2006&)\\n088. MaasJ, VerheijRA, SpreeuwenbergP, GroenewegenPP. 88.\\u20022008.  Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. BMC Public Health8:206[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&author=J+Maas&author=RA+Verheij&author=P+Spreeuwenberg&author=PP+Groenewegen&journal=BMC+Public+Health&volume=8&pages=206&publication_year=2008&)\\n089. MallerC, TownsendM, St LegerL, Henderson-WilsonC, PryorA. 89.\\u2002 et al.2008. Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context Melbourne, Aust.: Deakin Univ.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&author=C+Maller&author=M+Townsend&author=L+St+Leger&author=C+Henderson-Wilson&author=A+Pryor&publication_year=2008&)\\n090. McCormackGR, RockM, TooheyAM, HignellD. 90.\\u20022010.  Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. Health Place16:712–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&author=GR+McCormack&author=M+Rock&author=AM+Toohey&author=D+Hignell&journal=Health+Place&volume=16&pages=712-26&publication_year=2010&)\\n091. McCurdyLE, WinterbottomKE, MehtaSS, RobertsJR. 91.\\u20022010.  Using nature and outdoor activity to improve children\\'s health. Curr. Probl. Pediatr. Adolesc. Health Care40:102–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&author=LE+McCurdy&author=KE+Winterbottom&author=SS+Mehta&author=JR+Roberts&journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&volume=40&pages=102-17&publication_year=2010&)\\n092. MitchellR. 92.\\u20022013.  Is physical activity in natural environments better for mental health than physical activity in other environments?. Soc. Sci. Med.91:130–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=91&pages=130-34&publication_year=2013&)\\n093. MitchellR, PophamF. 93.\\u20022007.  Greenspace, urbanity and health: relationships in England. J. Epidemiol. Community Health61:681–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&author=R+Mitchell&author=F+Popham&journal=J.+Epidemiol.+Community+Health&volume=61&pages=681-83&publication_year=2007&)\\n094. MitchellR, PophamF. 94.\\u20022008.  Effect of exposure to natural environment on health inequalities: an observational population study. Lancet372:1655–60[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&author=R+Mitchell&author=F+Popham&journal=Lancet&volume=372&pages=1655-60&publication_year=2008&)\\n095. MitrioneS. 95.\\u20022008.  Therapeutic responses to natural environments: using gardens to improve health care. Minn. Med.91:31–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&author=S+Mitrione&journal=Minn.+Med.&volume=91&pages=31-34&publication_year=2008&)\\n096. MuñozS-A. 96.\\u20022009. Children in the Outdoors: A Literature Review Forres, Scotl.: Sustain. Dev. Res. Cent.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&author=S-A+Mu%C3%B1oz&publication_year=2009&)\\n097. NieminenT, MartelinT, KoskinenS, AroH, AlanenE, HyyppäMT. 97.\\u20022010.  Social capital as a determinant of self-rated health and psychological well-being. Int. J. Public Health55:531–42[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&author=T+Nieminen&author=T+Martelin&author=S+Koskinen&author=H+Aro&author=E+Alanen&author=MT+Hyypp%C3%A4&journal=Int.+J.+Public+Health&volume=55&pages=531-42&publication_year=2010&)\\n098. NilssonK, SangsterM, GallisC, HartigT, de VriesS. 98.\\u2002 et al.2011. Forests, Trees and Human Health Dordrecht: Springer\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&author=K+Nilsson&author=M+Sangster&author=C+Gallis&author=T+Hartig&author=S+de+Vries&publication_year=2011&)\\n099. NilssonME, BerglundB. 99.\\u20022006.  Soundscape quality in suburban green areas and city parks. Acta Acustica United Acustica92:903–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&author=ME+Nilsson&author=B+Berglund&journal=Acta+Acustica+United+Acustica&volume=92&pages=903-11&publication_year=2006&)\\n100. NowakDJ, CraneDE, StevensJC. 100.\\u20022006.  Air pollution removal by urban trees and shrubs in the United States. Urban For. Urban Green.4:115–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&author=DJ+Nowak&author=DE+Crane&author=JC+Stevens&journal=Urban+For.+Urban+Green.&volume=4&pages=115-23&publication_year=2006&)\\n101. OlmstedFL. 101.\\u20021970 (1870). Public Parks and the Enlargement of Towns New York: Arno (Cambridge, MA: Riverside)\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&author=FL+Olmsted&)\\n102. OrwellRL, WoodRA, BurchettMD, TarranJ, TorpyF. 102.\\u20022006.  The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. Water Air Soil Poll.177:59–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&author=RL+Orwell&author=RA+Wood&author=MD+Burchett&author=J+Tarran&author=F+Torpy&journal=Water+Air+Soil+Poll.&volume=177&pages=59-80&publication_year=2006&)\\n103. PaolettiE, BardelliT, GiovanniniG, PecchioliL. 103.\\u20022011.  Air quality impact of an urban park over time. Procedia Environ. Sci.4:10–16[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&author=E+Paoletti&author=T+Bardelli&author=G+Giovannini&author=L+Pecchioli&journal=Procedia+Environ.+Sci.&volume=4&pages=10-16&publication_year=2011&)\\n104. PowellKE, PaluchAE, BlairSN. 104.\\u20022011.  Physical activity for health: What Kind? How much? How Intense? On Top of What?. Annu. Rev. Public Health32:349–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&author=KE+Powell&author=AE+Paluch&author=SN+Blair&journal=Annu.+Rev.+Public+Health&volume=32&pages=349-65&publication_year=2011&)\\n105. PrettyJ, PeacockJ, SellensM, GriffinM. 105.\\u20022005.  The mental and physical health outcomes of green exercise. Int. J. Environ. Health Res.15:319–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&author=J+Pretty&author=J+Peacock&author=M+Sellens&author=M+Griffin&journal=Int.+J.+Environ.+Health+Res.&volume=15&pages=319-37&publication_year=2005&)\\n106. ProctorJD. 106.\\u20021998.  The social construction of nature: relativist accusations, pragmatist and critical realist responses. Ann. Assoc. Am. Geogr.88:352–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&author=JD+Proctor&journal=Ann.+Assoc.+Am.+Geogr.&volume=88&pages=352-76&publication_year=1998&)\\n107. RichardsonEA, MitchellR. 107.\\u20022010.  Gender differences in relationships between urban green space and health in the United Kingdom. Soc. Sci. Med.71:568–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&author=EA+Richardson&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=71&pages=568-75&publication_year=2010&)\\n108. RichardsonEA, MitchellR, HartigT, de VriesS, Astell-BurtT, FrumkinH. 108.\\u20022012.  Green cities and health: a question of scale?. J. Epidemiol. Community Health66:160–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&author=EA+Richardson&author=R+Mitchell&author=T+Hartig&author=S+de+Vries&author=T+Astell-Burt&author=H+Frumkin&journal=J.+Epidemiol.+Community+Health&volume=66&pages=160-65&publication_year=2012&)\\n109. RichardsonEA, PearceJ, MitchellR, KinghamS. 109.\\u20022013.  Role of physical activity in the relationship between urban green space and health. Public Health127:318–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&author=EA+Richardson&author=J+Pearce&author=R+Mitchell&author=S+Kingham&journal=Public+Health&volume=127&pages=318-24&publication_year=2013&)\\n110. RiosR, AikenLS, ZautraAJ. 110.\\u20022012.  Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. Ann. Behav. Med.43:50–61[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&author=R+Rios&author=LS+Aiken&author=AJ+Zautra&journal=Ann.+Behav.+Med.&volume=43&pages=50-61&publication_year=2012&)\\n111. RoseG. 111.\\u20022001.  Sick individuals and sick populations. Int. J. Epidemiol.30:427–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&author=G+Rose&journal=Int.+J.+Epidemiol.&volume=30&pages=427-32&publication_year=2001&)\\n112. SarteletKN, CouvidatF, SeigneurC, RoustanY. 112.\\u20022012.  Impact of biogenic emissions on air quality over Europe and North America. Atmos. Environ.53:131–41[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&author=KN+Sartelet&author=F+Couvidat&author=C+Seigneur&author=Y+Roustan&journal=Atmos.+Environ.&volume=53&pages=131-41&publication_year=2012&)\\n113. SetäläH, ViippolaV, RantalainenAL, PennanenA, Yli-PelkonenV. 113.\\u20022012.  Does urban vegetation mitigate air pollution in northern conditions?. Environ. Pollut.183:104–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&author=H+Set%C3%A4l%C3%A4&author=V+Viippola&author=AL+Rantalainen&author=A+Pennanen&author=V+Yli-Pelkonen&journal=Environ.+Pollut.&volume=183&pages=104-12&publication_year=2012&)\\n114. SimpsonJR, McPhersonEG. 114.\\u20021998.  Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. Atmos. Environ.32:69–74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&author=JR+Simpson&author=EG+McPherson&journal=Atmos.+Environ.&volume=32&pages=69-74&publication_year=1998&)\\n115. SmardonRC. 115.\\u20021988.  Perception and aesthetics of the urban environment: review of the role of vegetation. Landsc. Urban Plann.15:85–106[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&author=RC+Smardon&journal=Landsc.+Urban+Plann.&volume=15&pages=85-106&publication_year=1988&)\\n116. StaatsH, Van GemerdenE, HartigT. 116.\\u20022010.  Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. Leis. Sci.32:401–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&author=H+Staats&author=E+Van+Gemerden&author=T+Hartig&journal=Leis.+Sci.&volume=32&pages=401-17&publication_year=2010&)\\n117. StigsdotterUK, EkholmO, SchipperijnJ, ToftagerM, Kamper-JørgensenF, RandrupTB. 117.\\u20022010.  Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. Scand. J. Public Health38:411–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&author=UK+Stigsdotter&author=O+Ekholm&author=J+Schipperijn&author=M+Toftager&author=F+Kamper-J%C3%B8rgensen&author=TB+Randrup&journal=Scand.+J.+Public+Health&volume=38&pages=411-17&publication_year=2010&)\\n118. SugiyamaT, LeslieE, Giles-CortiB, OwenN. 118.\\u20022008.  Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. J. Epidemiol. Community Health62:e9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&author=T+Sugiyama&author=E+Leslie&author=B+Giles-Corti&author=N+Owen&journal=J.+Epidemiol.+Community+Health&volume=62&pages=e9&publication_year=2008&)\\n119. TakanoT, NakamuraK, WatanabeM. 119.\\u20022002.  Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. J. Epidemiol. Community Health56:913–18[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&author=T+Takano&author=K+Nakamura&author=M+Watanabe&journal=J.+Epidemiol.+Community+Health&volume=56&pages=913-18&publication_year=2002&)\\n120. TallisM, TaylorG, SinnettD, Freer-SmithP. 120.\\u20022011.  Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. Landsc. Urban Plann.103:129–38[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&author=M+Tallis&author=G+Taylor&author=D+Sinnett&author=P+Freer-Smith&journal=Landsc.+Urban+Plann.&volume=103&pages=129-38&publication_year=2011&)\\n121. TaylorAF, KuoFE. 121.\\u20022009.  Children with attention deficits concentrate better after walk in the park. J. Atten. Disord.12:402–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&author=AF+Taylor&author=FE+Kuo&journal=J.+Atten.+Disord.&volume=12&pages=402-9&publication_year=2009&)\\n122. TaylorAF, KuoFE, SullivanWC. 122.\\u20022002.  Views of nature and self-discipline: evidence from inner city children. J. Environ. Psychol.22:49–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&author=AF+Taylor&author=FE+Kuo&author=WC+Sullivan&journal=J.+Environ.+Psychol.&volume=22&pages=49-63&publication_year=2002&)\\n123. Thompson CoonJ, BoddyK, SteinK, WhearR, BartonJ, DepledgeMH. 123.\\u20022011.  Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. Environ. Sci. Technol.45:1761–72[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&author=J+Thompson+Coon&author=K+Boddy&author=K+Stein&author=R+Whear&author=J+Barton&author=MH+Depledge&journal=Environ.+Sci.+Technol.&volume=45&pages=1761-72&publication_year=2011&)\\n124. TsunetsuguY, ParkB, MiyazakiY. 124.\\u20022010.  Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. Environ. Health Prevent. Med.15:27–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&author=Y+Tsunetsugu&author=B+Park&author=Y+Miyazaki&journal=Environ.+Health+Prevent.+Med.&volume=15&pages=27-37&publication_year=2010&)\\n125. UlrichRS. 125.\\u20021979.  Visual landscapes and psychological well-being. Landsc. Res.4:17–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&author=RS+Ulrich&journal=Landsc.+Res.&volume=4&pages=17-23&publication_year=1979&)\\n126. UlrichRS. 126.\\u20021983.  Aesthetic and affective response to natural environment. Human Behaviour and Environment: Advances in Theory and Research. Volume\\n     6Behaviour and the Natural Environment, ed. I\\n     Altman, JF Wohlwill 85–125 New York: Plenum\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&author=RS+Ulrich&journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&pages=85-125&publication_year=1983&)\\n127. UlrichRS, SimonsRF, LositoBD, FioritoE, MilesMA, ZelsonM. 127.\\u20021991.  Stress recovery during exposure to natural and urban environments. J. Environ. Psychol.11:201–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&author=RS+Ulrich&author=RF+Simons&author=BD+Losito&author=E+Fiorito&author=MA+Miles&author=M+Zelson&journal=J.+Environ.+Psychol.&volume=11&pages=201-30&publication_year=1991&)\\n128. Van CauwenbergJ, De BourdeaudhuijI, De MeesterF, Van DyckD, SalmonJ. 128.\\u2002 et al.2011.  Relationship between the physical environment and physical activity in older adults: a systematic review. Health Place17:458–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&author=J+Van+Cauwenberg&author=I+De+Bourdeaudhuij&author=F+De+Meester&author=D+Van+Dyck&author=J+Salmon&journal=Health+Place&volume=17&pages=458-69&publication_year=2011&)\\n129. Van den BergAE, CustersMHG. 129.\\u20022011.  Gardening promotes neuroendocrine and affective restoration from stress. J. Health Psychol.16:3–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&author=AE+Van+den+Berg&author=MHG+Custers&journal=J.+Health+Psychol.&volume=16&pages=3-11&publication_year=2011&)\\n130. Van den BergAE, MaasJ, VerheijRA, GroenewegenPP. 130.\\u20022010.  Green space as a buffer between stressful life events and health. Soc. Sci. Med.70:1203–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&author=AE+Van+den+Berg&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&journal=Soc.+Sci.+Med.&volume=70&pages=1203-10&publication_year=2010&)\\n131. Van den BergAE, van Winsum-WestraM, de VriesS, van DillenSME. 131.\\u20022010.  Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. Environ. Health9:74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&author=AE+Van+den+Berg&author=M+van+Winsum-Westra&author=S+de+Vries&author=SME+van+Dillen&journal=Environ.+Health&volume=9&pages=74&publication_year=2010&)\\n132. Van HerzeleA, BellS, HartigT, PodestaMTC, van ZonR. 132.\\u20022011.  Health benefits of nature experience: the challenge of linking practice and research.  See Ref. 98 169–82\\n133. Ward ThompsonC, AspinallP, MontarzinoA. 133.\\u20022008.  The childhood factor: adult visits to green places and the significance of childhood experience. Environ. Behav.40:111–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&author=C+Ward+Thompson&author=P+Aspinall&author=A+Montarzino&journal=Environ.+Behav.&volume=40&pages=111-43&publication_year=2008&)\\n134. Ward ThompsonC, RoeJ, AspinallP, MitchellR, ClowA, MillerD. 134.\\u20022012.  More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. Landsc. Urban Plann.105:221–29[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&author=C+Ward+Thompson&author=J+Roe&author=P+Aspinall&author=R+Mitchell&author=A+Clow&author=D+Miller&journal=Landsc.+Urban+Plann.&volume=105&pages=221-29&publication_year=2012&)\\n135. WellsNM, EvansGW. 135.\\u20022003.  Nearby nature—a buffer of life stress among rural children. Environ. Behav.35:311–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&author=NM+Wells&author=GW+Evans&journal=Environ.+Behav.&volume=35&pages=311-30&publication_year=2003&)\\n136. WellsNM, LekiesKS. 136.\\u20022006.  Nature and the life course: pathways from childhood nature experiences to adult environmentalism. Child. Youth Environ.16:1–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&author=NM+Wells&author=KS+Lekies&journal=Child.+Youth+Environ.&volume=16&pages=1-24&publication_year=2006&)\\n137. WhitelawS. 137.\\u20022012.  The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. Crit. Public Health22:427–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&author=S+Whitelaw&journal=Crit.+Public+Health&volume=22&pages=427-40&publication_year=2012&)\\n138. 138.\\u2002WHO (World Health Organ.)1946. Preamble to the Constitution of the World Health Organization as adopted by the International Health Conference.  New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&publication_year=1946&)\\n139. WilsonSJ, LipseyMW. 139.\\u20022000.  Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. Eval. Program Plann.23:1–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&author=SJ+Wilson&author=MW+Lipsey&journal=Eval.+Program+Plann.&volume=23&pages=1-12&publication_year=2000&)\\n140. YooMH, KwonYJ, SonKC, KaysSJ. 140.\\u20022006.  Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. J. Am. Soc. Hort. Sci.131:452–58[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&author=MH+Yoo&author=YJ+Kwon&author=KC+Son&author=SJ+Kays&journal=J.+Am.+Soc.+Hort.+Sci.&volume=131&pages=452-58&publication_year=2006&)\\n141. ZickCD, SmithKR, Kowaleski-JonesL, UnoC, MerrillBJ. 141.\\u20022013.  Harvesting more than vegetables: the potential weight control benefits of community gardening. Am. J. Public Health103:e1–6[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&author=CD+Zick&author=KR+Smith&author=L+Kowaleski-Jones&author=C+Uno&author=BJ+Merrill&journal=Am.+J.+Public+Health&volume=103&pages=e1-6&publication_year=2013&)\\n\\nLiterature Cited\\n\\n001. AkbariH, KurnDM, BretzSE, HanfordJW. 1.\\u20021997.  Peak power and cooling energy savings of shade trees. Energy Build.25:139–48[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&author=H+Akbari&author=DM+Kurn&author=SE+Bretz&author=JW+Hanford&journal=Energy+Build.&volume=25&pages=139-48&publication_year=1997&)\\n002. AnnerstedtM, WährborgP. 2.\\u20022011.  Nature-assisted therapy: systematic review of controlled and observational studies. Scand. J. Public Health39:371–88[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&author=M+Annerstedt&author=P+W%C3%A4hrborg&journal=Scand.+J.+Public+Health&volume=39&pages=371-88&publication_year=2011&)\\n003. BartonJ, PrettyJ. 3.\\u20022010.  What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. Environ. Sci. Technol.44:3947–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&author=J+Barton&author=J+Pretty&journal=Environ.+Sci.+Technol.&volume=44&pages=3947-55&publication_year=2010&)\\n004. BaumFE, ZierschAM, ZhangG, OsborneK. 4.\\u20022009.  Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. Health Place15:925–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&author=FE+Baum&author=AM+Ziersch&author=G+Zhang&author=K+Osborne&journal=Health+Place&volume=15&pages=925-34&publication_year=2009&)\\n005. BaumanAE, ReisRS, SallisJF, WellsJC, LoosRJ, MartinBW. 5.\\u20022012.  Correlates of physical activity: Why are some people physically active and others not?. Lancet380:258–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&author=AE+Bauman&author=RS+Reis&author=JF+Sallis&author=JC+Wells&author=RJ+Loos&author=BW+Martin&journal=Lancet&volume=380&pages=258-71&publication_year=2012&)\\n006. BeckAM, MeyersNM. 6.\\u20021996.  Health enhancement and companion animal ownership. Annu. Rev. Public Health17:247–57[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&author=AM+Beck&author=NM+Meyers&journal=Annu.+Rev.+Public+Health&volume=17&pages=247-57&publication_year=1996&)\\n007. BeckettKP, Freer-SmithPH, TaylorG. 7.\\u20022000.  The capture of particulate pollution by trees at five contrasting urban sites. Arboric. J.24:209–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&author=KP+Beckett&author=PH+Freer-Smith&author=G+Taylor&journal=Arboric.+J.&volume=24&pages=209-30&publication_year=2000&)\\n008. Bedimo-RungAL, MowenAJ, CohenDA. 8.\\u20022005.  The significance of parks to physical activity and public health: a conceptual model. Am. J. Prev. Med.28:159–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&author=AL+Bedimo-Rung&author=AJ+Mowen&author=DA+Cohen&journal=Am.+J.+Prev.+Med.&volume=28&pages=159-68&publication_year=2005&)\\n009. BenjaminMT, WinerAM. 9.\\u20021998.  Estimating the ozone-forming potential of urban trees and shrubs. Atmos. Environ.32:53–68[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&author=MT+Benjamin&author=AM+Winer&journal=Atmos.+Environ.&volume=32&pages=53-68&publication_year=1998&)\\n010. BizeR, JohnsonJA, PlotnikoffRC. 10.\\u20022007.  Physical activity level and health-related quality of life in the general adult population: a systematic review. Prev. Med.45:401–15[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&author=R+Bize&author=JA+Johnson&author=RC+Plotnikoff&journal=Prev.+Med.&volume=45&pages=401-15&publication_year=2007&)\\n011. BowlerDE, Buyung-AliLM, KnightTM, PullinAS. 11.\\u20022010.  A systematic review of evidence for the added benefits to health of exposure to natural environments. BMC Public Health10:456[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&author=DE+Bowler&author=LM+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=BMC+Public+Health&volume=10&pages=456&publication_year=2010&)\\n012. BowlerDE, Buyung-AliL, KnightTM, PullinAS. 12.\\u20022010.  Urban greening to cool towns and cities: a systematic review of the empirical evidence. Landsc. Urban Plann.97:147–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&author=DE+Bowler&author=L+Buyung-Ali&author=TM+Knight&author=AS+Pullin&journal=Landsc.+Urban+Plann.&volume=97&pages=147-55&publication_year=2010&)\\n013. BrackCL. 13.\\u20022002.  Pollution mitigation and carbon sequestration by an urban forest. Environ. Pollut.116:S195–200[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&author=CL+Brack&journal=Environ.+Pollut.&volume=116&pages=S195-200&publication_year=2002&)\\n014. BranasCC, CheneyRA, MacDonaldJM, TamVW, JacksonTD, Ten HaveTR. 14.\\u20022011.  A difference-in-differences analysis of health, safety, and greening vacant urban space. Am. J. Epidemiol.174:1296–306[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&author=CC+Branas&author=RA+Cheney&author=JM+MacDonald&author=VW+Tam&author=TD+Jackson&author=TR+Ten+Have&journal=Am.+J.+Epidemiol.&volume=174&pages=1296-306&publication_year=2011&)\\n015. BratmanGN, HamiltonJP, DailyGC. 15.\\u20022012.  The impacts of nature experience on human cognitive function and mental health. Ann. N.Y. Acad. Sci.1249:118–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&author=GN+Bratman&author=JP+Hamilton&author=GC+Daily&journal=Ann.+N.Y.+Acad.+Sci.&volume=1249&pages=118-36&publication_year=2012&)\\n016. BringslimarkT, HartigT, PatilGG. 16.\\u20022009.  The psychological benefits of indoor plants: a critical review of the experimental literature. J. Environ. Psychol.29:422–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&author=T+Bringslimark&author=T+Hartig&author=GG+Patil&journal=J.+Environ.+Psychol.&volume=29&pages=422-33&publication_year=2009&)\\n017. BroekhuizenK, de VriesSI, PierikFH. 17.\\u20022013. Healthy Aging in a Green Living Environment: A Systematic Review of the Literature. TNO rep. R10154 Leiden: TNO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&author=K+Broekhuizen&author=SI+de+Vries&author=FH+Pierik&publication_year=2013&)\\n018. BrooksGD, BushRK. 18.\\u20022009.  Allergens and other factors important in atopic disease. Patterson\\'s Allergic Diseases LC Grammer, PA Greenberger 73–103 Philadelphia: Lippincott, Williams & Wilkins, 7th ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&author=GD+Brooks&author=RK+Bush&journal=Patterson%27s+Allergic+Diseases&pages=73-103&publication_year=2009&)\\n019. CariñanosP, Casares-PorcelM. 19.\\u20022011.  Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. Landsc. Urban Plann.101:205–14[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&author=P+Cari%C3%B1anos&author=M+Casares-Porcel&journal=Landsc.+Urban+Plann.&volume=101&pages=205-14&publication_year=2011&)\\n020. ChameidesWL, LindsayRW, RichardsonJ, KiangCS. 20.\\u20021989.  The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. Science241:1473–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&author=WL+Chameides&author=RW+Lindsay&author=J+Richardson&author=CS+Kiang&journal=Science&volume=241&pages=1473-75&publication_year=1989&)\\n021. CimprichB. 21.\\u20021993.  Development of an intervention to restore attention in cancer patients. Cancer Nurs.16:83–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&author=B+Cimprich&journal=Cancer+Nurs.&volume=16&pages=83-92&publication_year=1993&)\\n022. ColferCJP, SheilD, KishiM. 22.\\u20022006. Forests and Human Health: Assessing the Evidence Bogor, Indones.: Cent. Int. For. Res [http://www.cifor.org/publications/pdf\\\\_files/OccPapers/OP-45.pdf](http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&author=CJP+Colfer&author=D+Sheil&author=M+Kishi&publication_year=2006&)\\n023. DayLL. 23.\\u20022000.  Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. J. Plan Educ. Res.19:265–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&author=LL+Day&journal=J.+Plan+Educ.+Res.&volume=19&pages=265-75&publication_year=2000&)\\n024. de VriesS, ClaßenT, Eigenheer-HugS-M, KorpelaK, MaasJ. 24.\\u2002 et al.2011.  Contributions of natural environments to physical activity.  See Ref. 98 205–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&author=S+de+Vries&author=T+Cla%C3%9Fen&author=S-M+Eigenheer-Hug&author=K+Korpela&author=J+Maas&pages=205-43&publication_year=2011&)\\n025. de VriesS, van DillenSME, GroenewegenPP, SpreeuwenbergP. 25.\\u20022013.  Streetscape greenery and health: stress, social cohesion and physical activity as mediators. Soc. Sci. Med.94:26–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&author=S+de+Vries&author=SME+van+Dillen&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Soc.+Sci.+Med.&volume=94&pages=26-33&publication_year=2013&)\\n026. de VriesS, VerheijRA, GroenewegenPP, SpreeuwenbergP. 26.\\u20022003.  Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. Environ. Plann. A35:1717–31[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&author=S+de+Vries&author=RA+Verheij&author=PP+Groenewegen&author=P+Spreeuwenberg&journal=Environ.+Plann.+A&volume=35&pages=1717-31&publication_year=2003&)\\n027. DellaValleCT, TricheEW, LeadererBP, BellML. 27.\\u20022012.  Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. Epidemiology23:55–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&author=CT+DellaValle&author=EW+Triche&author=BP+Leaderer&author=ML+Bell&journal=Epidemiology&volume=23&pages=55-63&publication_year=2012&)\\n028. Den HertogF, BronkhorstM, MoermanM, Van WilgenburgR. 28.\\u20022006. De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit \\\\[The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity\\\\]. Amsterdam: EMGO Inst.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&author=F+Den+Hertog&author=M+Bronkhorst&author=M+Moerman&author=R+Van+Wilgenburg&publication_year=2006&)\\n029. DingD, SallisJF, KerrJ, LeeS, RosenbergDE. 29.\\u20022011.  Neighborhood environment and physical activity among youth: a review. Am. J. Prev. Med.41:442–55[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&author=D+Ding&author=JF+Sallis&author=J+Kerr&author=S+Lee&author=DE+Rosenberg&journal=Am.+J.+Prev.+Med.&volume=41&pages=442-55&publication_year=2011&)\\n030. DommJ, DrewR, GreeneA, RipleyE, SmardonR, TordesillasJ. 30.\\u20022008.  Recommended urban forest mixtures to optimize selected environmental benefits. EnviroNews: Int. Soc. Environ. Bot.14:7–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&author=J+Domm&author=R+Drew&author=A+Greene&author=E+Ripley&author=R+Smardon&author=J+Tordesillas&journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&volume=14&pages=7-10&publication_year=2008&)\\n031. DonovanGH, PrestemonJP. 31.\\u20022012.  The effect of trees on crime in Portland, Oregon. Environ. Behav.44:3–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&author=GH+Donovan&author=JP+Prestemon&journal=Environ.+Behav.&volume=44&pages=3-30&publication_year=2012&)\\n032. EidJ, OvermanHG, PugaD, TurnerMA. 32.\\u20022008.  Fat city: questioning the relationship between urban sprawl and obesity. J. Urban Econ.63:385–404[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&author=J+Eid&author=HG+Overman&author=D+Puga&author=MA+Turner&journal=J.+Urban+Econ.&volume=63&pages=385-404&publication_year=2008&)\\n033. EngelGL. 33.\\u20021977.  The need for a new medical model: a challenge for biomedicine. Science196:129–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&author=GL+Engel&journal=Science&volume=196&pages=129-36&publication_year=1977&)\\n034. EscobedoFJ, NowakDJ. 34.\\u20022009.  Spatial heterogeneity and air pollution removal by an urban forest. Landsc. Urban Plann.90:102–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&author=FJ+Escobedo&author=DJ+Nowak&journal=Landsc.+Urban+Plann.&volume=90&pages=102-10&publication_year=2009&)\\n035. FerdinandAO, SenB, RahurkarS, EnglerS, MenachemiN. 35.\\u20022012.  The relationship between built environments and physical activity: a systematic review. Am. J. Public Health102:e7–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&author=AO+Ferdinand&author=B+Sen&author=S+Rahurkar&author=S+Engler&author=N+Menachemi&journal=Am.+J.+Public+Health&volume=102&pages=e7-13&publication_year=2012&)\\n036. ForrestR, KearnsA. 36.\\u20022001.  Social cohesion, social capital and the neighbourhood. Urban Stud.38:2125–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&author=R+Forrest&author=A+Kearns&journal=Urban+Stud.&volume=38&pages=2125-43&publication_year=2001&)\\n037. FowlerD. 37.\\u20022002.  Pollutant deposition and uptake by vegetation. Air Pollution and Plant Life JNB Bell, M Treshow 43–67 New York: Wiley, 2nd ed..\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&author=D+Fowler&journal=Air+Pollution+and+Plant+Life&pages=43-67&publication_year=2002&)\\n038. FrancisJ, Giles-CortiB, WoodL, KnuimanM. 38.\\u20022012.  Creating sense of community: the role of public space. J. Environ. Psychol.32:401–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&author=J+Francis&author=B+Giles-Corti&author=L+Wood&author=M+Knuiman&journal=J.+Environ.+Psychol.&volume=32&pages=401-9&publication_year=2012&)\\n039. FrancisJ, WoodLJ, KnuimanM, Giles-CortiB. 39.\\u20022012.  Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. Soc. Sci. Med.74:1570–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&author=J+Francis&author=LJ+Wood&author=M+Knuiman&author=B+Giles-Corti&journal=Soc.+Sci.+Med.&volume=74&pages=1570-77&publication_year=2012&)\\n040. FraserSDS, LockK. 40.\\u20022011.  Cycling for transport and public health: a systematic review of the effect of the environment on cycling. Eur. J. Public Health21:738–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&author=SDS+Fraser&author=K+Lock&journal=Eur.+J.+Public+Health&volume=21&pages=738-43&publication_year=2011&)\\n041. FrostSS, GoinsRT, HunterRH, HookerSP, BryantLL. 41.\\u2002 et al.2010.  Effects of the built environment on physical activity of adults living in rural settings. Am. J. Health Promot.24:267–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&author=SS+Frost&author=RT+Goins&author=RH+Hunter&author=SP+Hooker&author=LL+Bryant&journal=Am.+J.+Health+Promot.&volume=24&pages=267-83&publication_year=2010&)\\n042. FrumkinH. 42.\\u20022001.  Beyond toxicity: human health and the natural environment. Am. J. Prev. Med.20:234–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=20&pages=234-40&publication_year=2001&)\\n043. FrumkinH. 43.\\u20022013.  The evidence of nature and the nature of evidence. Am. J. Prev. Med.44:196–97[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&author=H+Frumkin&journal=Am.+J.+Prev.+Med.&volume=44&pages=196-97&publication_year=2013&)\\n044. GaleaS, VlahovD. 44.\\u20022005.  Urban health: evidence, challenges, and directions. Annu. Rev. Public Health26:341–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&author=S+Galea&author=D+Vlahov&journal=Annu.+Rev.+Public+Health&volume=26&pages=341-65&publication_year=2005&)\\n045. GaterslebenB, AndrewsM. 45.\\u20022013.  When walking in nature is not restorative—the role of prospect and refuge. Health Place20:91–101[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&author=B+Gatersleben&author=M+Andrews&journal=Health+Place&volume=20&pages=91-101&publication_year=2013&)\\n046. Giles-CortiB, BroomhallMH, KnuimanM, CollinsC, DouglasK. 46.\\u2002 et al.2005.  Increasing walking: How important is distance to, attractiveness, and size of public open space?. Am. J. Prev. Med.28:169–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&author=B+Giles-Corti&author=MH+Broomhall&author=M+Knuiman&author=C+Collins&author=K+Douglas&journal=Am.+J.+Prev.+Med.&volume=28&pages=169-76&publication_year=2005&)\\n047. GonzalezMT, HartigT, PatilGG, MartinsenEW, KirkevoldM. 47.\\u20022010.  Therapeutic horticulture in clinical depression: a prospective study of active components. J. Adv. Nurs.66:2002–13[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&author=MT+Gonzalez&author=T+Hartig&author=GG+Patil&author=EW+Martinsen&author=M+Kirkevold&journal=J.+Adv.+Nurs.&volume=66&pages=2002-13&publication_year=2010&)\\n048. HartigT. 48.\\u20021993.  Nature experience in transactional perspective. Landsc. Urban Plann.25:17–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&author=T+Hartig&journal=Landsc.+Urban+Plann.&volume=25&pages=17-36&publication_year=1993&)\\n049. HartigT, EvansGW, JamnerLD, DavisDS, GärlingT. 49.\\u20022003.  Tracking restoration in natural and urban field settings. J. Environ. Psychol.23:109–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&author=T+Hartig&author=GW+Evans&author=LD+Jamner&author=DS+Davis&author=T+G%C3%A4rling&journal=J.+Environ.+Psychol.&volume=23&pages=109-23&publication_year=2003&)\\n050. HartigT, FranssonU. 50.\\u20022009.  Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. Environ. Plann. A41:82–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&author=T+Hartig&author=U+Fransson&journal=Environ.+Plann.+A&volume=41&pages=82-96&publication_year=2009&)\\n051. HartigT, JohanssonG, KylinC. 51.\\u20022003.  Residence in the social ecology of stress and restoration. J. Soc. Iss.59:611–36[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&author=T+Hartig&author=G+Johansson&author=C+Kylin&journal=J.+Soc.+Iss.&volume=59&pages=611-36&publication_year=2003&)\\n052. HartigT, MangM, EvansGW. 52.\\u20021991.  Restorative effects of natural environment experiences. Environ. Behav.23:3–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&author=T+Hartig&author=M+Mang&author=GW+Evans&journal=Environ.+Behav.&volume=23&pages=3-26&publication_year=1991&)\\n053. HartigT, van den BergAE, HagerhallCM, TomalakM, BauerN. 53.\\u2002 et al.2011.  Health benefits of nature experience: psychological, social and cultural processes.  See Ref. 98 127–68\\n054. 54.\\u2002Health Counc. Neth2004. Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being. The Hague: Health Counc. Neth., RMNO [http://www.gezondheidsraad.nl/sites/default/files/Nature\\\\_and\\\\_health.pdf](http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf)[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&publication_year=2004&)\\n055. HeinenE, van WeeB, MaatK. 55.\\u20022010.  Commuting by bicycle: an overview of the literature. Transp. Rev.30:59–96[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&author=E+Heinen&author=B+van+Wee&author=K+Maat&journal=Transp.+Rev.&volume=30&pages=59-96&publication_year=2010&)\\n056. HillsdonM, PanterJ, FosterC, JonesA. 56.\\u20022006.  The relationship between access and quality of urban green space with population physical activity. Public Health120:1127–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&author=M+Hillsdon&author=J+Panter&author=C+Foster&author=A+Jones&journal=Public+Health&volume=120&pages=1127-32&publication_year=2006&)\\n057. Holt-LunstadJ, SmithTB, LaytonJB. 57.\\u20022010.  Social relationships and mortality risk: a meta-analytic review. PLoS Med.7:e1000316[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&author=J+Holt-Lunstad&author=TB+Smith&author=JB+Layton&journal=PLoS+Med.&volume=7&pages=e1000316&publication_year=2010&)\\n058. HomeR, HunzikerM, BauerN. 58.\\u20022012.  Psychosocial outcomes as motivations for visiting nearby urban green spaces. Leis. Sci.34:350–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&author=R+Home&author=M+Hunziker&author=N+Bauer&journal=Leis.+Sci.&volume=34&pages=350-65&publication_year=2012&)\\n059. IslamMN, RahmanK-S, BaharMM, HabibMA, AndoK, HattoriN. 59.\\u20022012.  Pollution attenuation by roadside greenbelt in and around urban areas. Urban For. Urban Green.11:460–64[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&author=MN+Islam&author=K-S+Rahman&author=MM+Bahar&author=MA+Habib&author=K+Ando&author=N+Hattori&journal=Urban+For.+Urban+Green.&volume=11&pages=460-64&publication_year=2012&)\\n060. JahnckeH, HyggeS, HalinN, GreenAM, DimbergK. 60.\\u20022011.  Open-plan office noise: cognitive performance and restoration. J. Environ. Psychol.31:373–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&author=H+Jahncke&author=S+Hygge&author=N+Halin&author=AM+Green&author=K+Dimberg&journal=J.+Environ.+Psychol.&volume=31&pages=373-82&publication_year=2011&)\\n061. JanssenI, LeBlancAG. 61.\\u20022010.  Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. Int. J. Behav. Nutr. Phys. Act.7:40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&author=I+Janssen&author=AG+LeBlanc&journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&volume=7&pages=40&publication_year=2010&)\\n062. JanssonM, ForsH, LindgrenT, WiströmB. 62.\\u20022013.  Perceived personal safety in relation to urban woodland vegetation—a review. Urban For. Urban Green.12:127–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&author=M+Jansson&author=H+Fors&author=T+Lindgren&author=B+Wistr%C3%B6m&journal=Urban+For.+Urban+Green.&volume=12&pages=127-33&publication_year=2013&)\\n063. JimCY, ChenWY. 63.\\u20022008.  Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). J. Environ. Manag.88:665–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&author=CY+Jim&author=WY+Chen&journal=J.+Environ.+Manag.&volume=88&pages=665-76&publication_year=2008&)\\n064. JohanssonM, HartigT, StaatsH. 64.\\u20022011.  Psychological benefits of walking: moderation by company and outdoor environment. Appl. Psychol. Health Well-Being3:261–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&author=M+Johansson&author=T+Hartig&author=H+Staats&journal=Appl.+Psychol.+Health+Well-Being&volume=3&pages=261-80&publication_year=2011&)\\n065. KaczynskiAT, HendersonKA. 65.\\u20022007.  Environmental correlates of physical activity: a review of evidence about parks and recreation. Leis. Sci.29:315–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&author=AT+Kaczynski&author=KA+Henderson&journal=Leis.+Sci.&volume=29&pages=315-54&publication_year=2007&)\\n066. KaplanR. 66.\\u20021993.  The role of nature in the context of the workplace. Landsc. Urban Plann.26:193–201[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&author=R+Kaplan&journal=Landsc.+Urban+Plann.&volume=26&pages=193-201&publication_year=1993&)\\n067. KaplanR, KaplanS. 67.\\u20021989. The Experience of Nature: A Psychological Perspective New York: Cambridge Univ. Press\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&author=R+Kaplan&author=S+Kaplan&publication_year=1989&)\\n068. KaplanS. 68.\\u20021995.  The restorative benefits of nature: toward an integrative framework. J. Environ. Psychol.15:169–82[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&author=S+Kaplan&journal=J.+Environ.+Psychol.&volume=15&pages=169-82&publication_year=1995&)\\n069. KaplanS. 69.\\u20022001.  Meditation, restoration, and the management of mental fatigue. Environ. Behav.33:480–506[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&author=S+Kaplan&journal=Environ.+Behav.&volume=33&pages=480-506&publication_year=2001&)\\n070. KarlT, HarleyP, EmmonsL, ThorntonB, GuentherA. 70.\\u2002 et al.2010.  Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. Science330:816–19[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&author=T+Karl&author=P+Harley&author=L+Emmons&author=B+Thornton&author=A+Guenther&journal=Science&volume=330&pages=816-19&publication_year=2010&)\\n071. KaźmierczakA. 71.\\u20022013.  The contribution of local parks to neighbourhood social ties. Landsc. Urban Plann.109:31–44[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&author=A+Ka%C5%BAmierczak&journal=Landsc.+Urban+Plann.&volume=109&pages=31-44&publication_year=2013&)\\n072. KnopfRC. 72.\\u20021987.  Human behavior, cognition, and affect in the natural environment. Handbook of Environmental Psychology D Stokols, I Altman 783–825 New York: Wiley\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&author=RC+Knopf&journal=Handbook+of+Environmental+Psychology&pages=783-825&publication_year=1987&)\\n073. KorpelaK, HartigT. 73.\\u20021996.  Restorative qualities of favorite places. J. Environ. Psychol.16:221–33[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&author=K+Korpela&author=T+Hartig&journal=J.+Environ.+Psychol.&volume=16&pages=221-33&publication_year=1996&)\\n074. KrollJH, SeinfeldJH. 74.\\u20022008.  Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. Atmos. Environ.42:3593–624[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&author=JH+Kroll&author=JH+Seinfeld&journal=Atmos.+Environ.&volume=42&pages=3593-624&publication_year=2008&)\\n075. KuoFE, SullivanWC. 75.\\u20022001.  Aggression and violence in the inner city: effects of environment via mental fatigue. Environ. Behav.33:543–71[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=543-71&publication_year=2001&)\\n076. KuoFE, SullivanWC. 76.\\u20022001.  Environment and crime in the inner city: Does vegetation reduce crime?. Environ. Behav.33:343–67[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&author=FE+Kuo&author=WC+Sullivan&journal=Environ.+Behav.&volume=33&pages=343-67&publication_year=2001&)\\n077. KuoFE, SullivanWC, ColeyRL, BrunsonL. 77.\\u20021998.  Fertile ground for community: inner-city neighborhood common spaces. Am. J. Community Psychol.26:823–51[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&author=FE+Kuo&author=WC+Sullivan&author=RL+Coley&author=L+Brunson&journal=Am.+J.+Community+Psychol.&volume=26&pages=823-51&publication_year=1998&)\\n078. LachowyczK, JonesAP. 78.\\u20022011.  Greenspace and obesity: a systematic review of the evidence. Obes. Rev.12:e183–89[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&author=K+Lachowycz&author=AP+Jones&journal=Obes.+Rev.&volume=12&pages=e183-89&publication_year=2011&)\\n079. LachowyczK, JonesAP. 79.\\u20022013.  Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. Landsc. Urban Plann.118:62–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&author=K+Lachowycz&author=AP+Jones&journal=Landsc.+Urban+Plann.&volume=118&pages=62-69&publication_year=2013&)\\n080. LindheimR, SymeSL. 80.\\u20021983.  Environments, people, and health. Annu. Rev. Public Health4:335–59[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&author=R+Lindheim&author=SL+Syme&journal=Annu.+Rev.+Public+Health&volume=4&pages=335-59&publication_year=1983&)\\n081. LiuY-J, MuY-J, ZhuY-G, DingH, ArensNC. 81.\\u20022007.  Which ornamental plant species effectively remove benzene from indoor air?. Atmos. Environ.41:650–54[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&author=Y-J+Liu&author=Y-J+Mu&author=Y-G+Zhu&author=H+Ding&author=NC+Arens&journal=Atmos.+Environ.&volume=41&pages=650-54&publication_year=2007&)\\n082. LloydGER, ChadwickJ, MannWN. 82.\\u20021978. Hippocratic Writings Harmondsworth: Penguin\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&author=GER+Lloyd&author=J+Chadwick&author=WN+Mann&publication_year=1978&)\\n083. LovasiGS, O\\'Neil-DunneJP, LuJW, SheehanD, PerzanowskiMS. 83.\\u2002 et al.2013.  Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. Environ. Health Perspect.121:494–500 00e1–6\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&author=GS+Lovasi&author=JP+O%27Neil-Dunne&author=JW+Lu&author=D+Sheehan&author=MS+Perzanowski&journal=Environ.+Health+Perspect.&volume=121&pages=494-500&publication_year=2013&)\\n084. MaasJ, SpreeuwenbergP, van Winsum-WestraM, VerheijRA, de VriesS, GroenewegenPP. 84.\\u20022009.  Is green space in the living environment associated with people\\'s feelings of social safety?. Environ. Plann. A41:1763–77[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&author=J+Maas&author=P+Spreeuwenberg&author=M+van+Winsum-Westra&author=RA+Verheij&author=S+de+Vries&author=PP+Groenewegen&journal=Environ.+Plann.+A&volume=41&pages=1763-77&publication_year=2009&)\\n085. MaasJ, van DillenSM, VerheijRA, GroenewegenPP. 85.\\u20022009.  Social contacts as a possible mechanism behind the relation between green space and health. Health Place15:586–95[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&author=J+Maas&author=SM+van+Dillen&author=RA+Verheij&author=PP+Groenewegen&journal=Health+Place&volume=15&pages=586-95&publication_year=2009&)\\n086. MaasJ, VerheijRA, de VriesS, SpreeuwenbergP, SchellevisFG, GroenewegenPP. 86.\\u20022009.  Morbidity is related to a green living environment. J. Epidemiol. Community Health63:967–73[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&author=J+Maas&author=RA+Verheij&author=S+de+Vries&author=P+Spreeuwenberg&author=FG+Schellevis&author=PP+Groenewegen&journal=J.+Epidemiol.+Community+Health&volume=63&pages=967-73&publication_year=2009&)\\n087. MaasJ, VerheijRA, GroenewegenPP, de VriesS, SpreeuwenbergP. 87.\\u20022006.  Green space, urbanity, and health: How strong is the relation?. J. Epidemiol. Community Health60:587–92[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&author=S+de+Vries&author=P+Spreeuwenberg&journal=J.+Epidemiol.+Community+Health&volume=60&pages=587-92&publication_year=2006&)\\n088. MaasJ, VerheijRA, SpreeuwenbergP, GroenewegenPP. 88.\\u20022008.  Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. BMC Public Health8:206[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&author=J+Maas&author=RA+Verheij&author=P+Spreeuwenberg&author=PP+Groenewegen&journal=BMC+Public+Health&volume=8&pages=206&publication_year=2008&)\\n089. MallerC, TownsendM, St LegerL, Henderson-WilsonC, PryorA. 89.\\u2002 et al.2008. Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context Melbourne, Aust.: Deakin Univ.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&author=C+Maller&author=M+Townsend&author=L+St+Leger&author=C+Henderson-Wilson&author=A+Pryor&publication_year=2008&)\\n090. McCormackGR, RockM, TooheyAM, HignellD. 90.\\u20022010.  Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. Health Place16:712–26[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&author=GR+McCormack&author=M+Rock&author=AM+Toohey&author=D+Hignell&journal=Health+Place&volume=16&pages=712-26&publication_year=2010&)\\n091. McCurdyLE, WinterbottomKE, MehtaSS, RobertsJR. 91.\\u20022010.  Using nature and outdoor activity to improve children\\'s health. Curr. Probl. Pediatr. Adolesc. Health Care40:102–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&author=LE+McCurdy&author=KE+Winterbottom&author=SS+Mehta&author=JR+Roberts&journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&volume=40&pages=102-17&publication_year=2010&)\\n092. MitchellR. 92.\\u20022013.  Is physical activity in natural environments better for mental health than physical activity in other environments?. Soc. Sci. Med.91:130–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=91&pages=130-34&publication_year=2013&)\\n093. MitchellR, PophamF. 93.\\u20022007.  Greenspace, urbanity and health: relationships in England. J. Epidemiol. Community Health61:681–83[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&author=R+Mitchell&author=F+Popham&journal=J.+Epidemiol.+Community+Health&volume=61&pages=681-83&publication_year=2007&)\\n094. MitchellR, PophamF. 94.\\u20022008.  Effect of exposure to natural environment on health inequalities: an observational population study. Lancet372:1655–60[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&author=R+Mitchell&author=F+Popham&journal=Lancet&volume=372&pages=1655-60&publication_year=2008&)\\n095. MitrioneS. 95.\\u20022008.  Therapeutic responses to natural environments: using gardens to improve health care. Minn. Med.91:31–34[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&author=S+Mitrione&journal=Minn.+Med.&volume=91&pages=31-34&publication_year=2008&)\\n096. MuñozS-A. 96.\\u20022009. Children in the Outdoors: A Literature Review Forres, Scotl.: Sustain. Dev. Res. Cent.\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&author=S-A+Mu%C3%B1oz&publication_year=2009&)\\n097. NieminenT, MartelinT, KoskinenS, AroH, AlanenE, HyyppäMT. 97.\\u20022010.  Social capital as a determinant of self-rated health and psychological well-being. Int. J. Public Health55:531–42[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&author=T+Nieminen&author=T+Martelin&author=S+Koskinen&author=H+Aro&author=E+Alanen&author=MT+Hyypp%C3%A4&journal=Int.+J.+Public+Health&volume=55&pages=531-42&publication_year=2010&)\\n098. NilssonK, SangsterM, GallisC, HartigT, de VriesS. 98.\\u2002 et al.2011. Forests, Trees and Human Health Dordrecht: Springer\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&author=K+Nilsson&author=M+Sangster&author=C+Gallis&author=T+Hartig&author=S+de+Vries&publication_year=2011&)\\n099. NilssonME, BerglundB. 99.\\u20022006.  Soundscape quality in suburban green areas and city parks. Acta Acustica United Acustica92:903–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&author=ME+Nilsson&author=B+Berglund&journal=Acta+Acustica+United+Acustica&volume=92&pages=903-11&publication_year=2006&)\\n100. NowakDJ, CraneDE, StevensJC. 100.\\u20022006.  Air pollution removal by urban trees and shrubs in the United States. Urban For. Urban Green.4:115–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&author=DJ+Nowak&author=DE+Crane&author=JC+Stevens&journal=Urban+For.+Urban+Green.&volume=4&pages=115-23&publication_year=2006&)\\n101. OlmstedFL. 101.\\u20021970 (1870). Public Parks and the Enlargement of Towns New York: Arno (Cambridge, MA: Riverside)\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&author=FL+Olmsted&)\\n102. OrwellRL, WoodRA, BurchettMD, TarranJ, TorpyF. 102.\\u20022006.  The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. Water Air Soil Poll.177:59–80[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&author=RL+Orwell&author=RA+Wood&author=MD+Burchett&author=J+Tarran&author=F+Torpy&journal=Water+Air+Soil+Poll.&volume=177&pages=59-80&publication_year=2006&)\\n103. PaolettiE, BardelliT, GiovanniniG, PecchioliL. 103.\\u20022011.  Air quality impact of an urban park over time. Procedia Environ. Sci.4:10–16[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&author=E+Paoletti&author=T+Bardelli&author=G+Giovannini&author=L+Pecchioli&journal=Procedia+Environ.+Sci.&volume=4&pages=10-16&publication_year=2011&)\\n104. PowellKE, PaluchAE, BlairSN. 104.\\u20022011.  Physical activity for health: What Kind? How much? How Intense? On Top of What?. Annu. Rev. Public Health32:349–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&author=KE+Powell&author=AE+Paluch&author=SN+Blair&journal=Annu.+Rev.+Public+Health&volume=32&pages=349-65&publication_year=2011&)\\n105. PrettyJ, PeacockJ, SellensM, GriffinM. 105.\\u20022005.  The mental and physical health outcomes of green exercise. Int. J. Environ. Health Res.15:319–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&author=J+Pretty&author=J+Peacock&author=M+Sellens&author=M+Griffin&journal=Int.+J.+Environ.+Health+Res.&volume=15&pages=319-37&publication_year=2005&)\\n106. ProctorJD. 106.\\u20021998.  The social construction of nature: relativist accusations, pragmatist and critical realist responses. Ann. Assoc. Am. Geogr.88:352–76[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&author=JD+Proctor&journal=Ann.+Assoc.+Am.+Geogr.&volume=88&pages=352-76&publication_year=1998&)\\n107. RichardsonEA, MitchellR. 107.\\u20022010.  Gender differences in relationships between urban green space and health in the United Kingdom. Soc. Sci. Med.71:568–75[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&author=EA+Richardson&author=R+Mitchell&journal=Soc.+Sci.+Med.&volume=71&pages=568-75&publication_year=2010&)\\n108. RichardsonEA, MitchellR, HartigT, de VriesS, Astell-BurtT, FrumkinH. 108.\\u20022012.  Green cities and health: a question of scale?. J. Epidemiol. Community Health66:160–65[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&author=EA+Richardson&author=R+Mitchell&author=T+Hartig&author=S+de+Vries&author=T+Astell-Burt&author=H+Frumkin&journal=J.+Epidemiol.+Community+Health&volume=66&pages=160-65&publication_year=2012&)\\n109. RichardsonEA, PearceJ, MitchellR, KinghamS. 109.\\u20022013.  Role of physical activity in the relationship between urban green space and health. Public Health127:318–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&author=EA+Richardson&author=J+Pearce&author=R+Mitchell&author=S+Kingham&journal=Public+Health&volume=127&pages=318-24&publication_year=2013&)\\n110. RiosR, AikenLS, ZautraAJ. 110.\\u20022012.  Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. Ann. Behav. Med.43:50–61[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&author=R+Rios&author=LS+Aiken&author=AJ+Zautra&journal=Ann.+Behav.+Med.&volume=43&pages=50-61&publication_year=2012&)\\n111. RoseG. 111.\\u20022001.  Sick individuals and sick populations. Int. J. Epidemiol.30:427–32[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&author=G+Rose&journal=Int.+J.+Epidemiol.&volume=30&pages=427-32&publication_year=2001&)\\n112. SarteletKN, CouvidatF, SeigneurC, RoustanY. 112.\\u20022012.  Impact of biogenic emissions on air quality over Europe and North America. Atmos. Environ.53:131–41[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&author=KN+Sartelet&author=F+Couvidat&author=C+Seigneur&author=Y+Roustan&journal=Atmos.+Environ.&volume=53&pages=131-41&publication_year=2012&)\\n113. SetäläH, ViippolaV, RantalainenAL, PennanenA, Yli-PelkonenV. 113.\\u20022012.  Does urban vegetation mitigate air pollution in northern conditions?. Environ. Pollut.183:104–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&author=H+Set%C3%A4l%C3%A4&author=V+Viippola&author=AL+Rantalainen&author=A+Pennanen&author=V+Yli-Pelkonen&journal=Environ.+Pollut.&volume=183&pages=104-12&publication_year=2012&)\\n114. SimpsonJR, McPhersonEG. 114.\\u20021998.  Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. Atmos. Environ.32:69–74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&author=JR+Simpson&author=EG+McPherson&journal=Atmos.+Environ.&volume=32&pages=69-74&publication_year=1998&)\\n115. SmardonRC. 115.\\u20021988.  Perception and aesthetics of the urban environment: review of the role of vegetation. Landsc. Urban Plann.15:85–106[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&author=RC+Smardon&journal=Landsc.+Urban+Plann.&volume=15&pages=85-106&publication_year=1988&)\\n116. StaatsH, Van GemerdenE, HartigT. 116.\\u20022010.  Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. Leis. Sci.32:401–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&author=H+Staats&author=E+Van+Gemerden&author=T+Hartig&journal=Leis.+Sci.&volume=32&pages=401-17&publication_year=2010&)\\n117. StigsdotterUK, EkholmO, SchipperijnJ, ToftagerM, Kamper-JørgensenF, RandrupTB. 117.\\u20022010.  Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. Scand. J. Public Health38:411–17[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&author=UK+Stigsdotter&author=O+Ekholm&author=J+Schipperijn&author=M+Toftager&author=F+Kamper-J%C3%B8rgensen&author=TB+Randrup&journal=Scand.+J.+Public+Health&volume=38&pages=411-17&publication_year=2010&)\\n118. SugiyamaT, LeslieE, Giles-CortiB, OwenN. 118.\\u20022008.  Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. J. Epidemiol. Community Health62:e9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&author=T+Sugiyama&author=E+Leslie&author=B+Giles-Corti&author=N+Owen&journal=J.+Epidemiol.+Community+Health&volume=62&pages=e9&publication_year=2008&)\\n119. TakanoT, NakamuraK, WatanabeM. 119.\\u20022002.  Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. J. Epidemiol. Community Health56:913–18[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&author=T+Takano&author=K+Nakamura&author=M+Watanabe&journal=J.+Epidemiol.+Community+Health&volume=56&pages=913-18&publication_year=2002&)\\n120. TallisM, TaylorG, SinnettD, Freer-SmithP. 120.\\u20022011.  Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. Landsc. Urban Plann.103:129–38[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&author=M+Tallis&author=G+Taylor&author=D+Sinnett&author=P+Freer-Smith&journal=Landsc.+Urban+Plann.&volume=103&pages=129-38&publication_year=2011&)\\n121. TaylorAF, KuoFE. 121.\\u20022009.  Children with attention deficits concentrate better after walk in the park. J. Atten. Disord.12:402–9[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&author=AF+Taylor&author=FE+Kuo&journal=J.+Atten.+Disord.&volume=12&pages=402-9&publication_year=2009&)\\n122. TaylorAF, KuoFE, SullivanWC. 122.\\u20022002.  Views of nature and self-discipline: evidence from inner city children. J. Environ. Psychol.22:49–63[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&author=AF+Taylor&author=FE+Kuo&author=WC+Sullivan&journal=J.+Environ.+Psychol.&volume=22&pages=49-63&publication_year=2002&)\\n123. Thompson CoonJ, BoddyK, SteinK, WhearR, BartonJ, DepledgeMH. 123.\\u20022011.  Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. Environ. Sci. Technol.45:1761–72[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&author=J+Thompson+Coon&author=K+Boddy&author=K+Stein&author=R+Whear&author=J+Barton&author=MH+Depledge&journal=Environ.+Sci.+Technol.&volume=45&pages=1761-72&publication_year=2011&)\\n124. TsunetsuguY, ParkB, MiyazakiY. 124.\\u20022010.  Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. Environ. Health Prevent. Med.15:27–37[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&author=Y+Tsunetsugu&author=B+Park&author=Y+Miyazaki&journal=Environ.+Health+Prevent.+Med.&volume=15&pages=27-37&publication_year=2010&)\\n125. UlrichRS. 125.\\u20021979.  Visual landscapes and psychological well-being. Landsc. Res.4:17–23[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&author=RS+Ulrich&journal=Landsc.+Res.&volume=4&pages=17-23&publication_year=1979&)\\n126. UlrichRS. 126.\\u20021983.  Aesthetic and affective response to natural environment. Human Behaviour and Environment: Advances in Theory and Research. Volume\\n     6Behaviour and the Natural Environment, ed. I\\n     Altman, JF Wohlwill 85–125 New York: Plenum\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&author=RS+Ulrich&journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&pages=85-125&publication_year=1983&)\\n127. UlrichRS, SimonsRF, LositoBD, FioritoE, MilesMA, ZelsonM. 127.\\u20021991.  Stress recovery during exposure to natural and urban environments. J. Environ. Psychol.11:201–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&author=RS+Ulrich&author=RF+Simons&author=BD+Losito&author=E+Fiorito&author=MA+Miles&author=M+Zelson&journal=J.+Environ.+Psychol.&volume=11&pages=201-30&publication_year=1991&)\\n128. Van CauwenbergJ, De BourdeaudhuijI, De MeesterF, Van DyckD, SalmonJ. 128.\\u2002 et al.2011.  Relationship between the physical environment and physical activity in older adults: a systematic review. Health Place17:458–69[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&author=J+Van+Cauwenberg&author=I+De+Bourdeaudhuij&author=F+De+Meester&author=D+Van+Dyck&author=J+Salmon&journal=Health+Place&volume=17&pages=458-69&publication_year=2011&)\\n129. Van den BergAE, CustersMHG. 129.\\u20022011.  Gardening promotes neuroendocrine and affective restoration from stress. J. Health Psychol.16:3–11[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&author=AE+Van+den+Berg&author=MHG+Custers&journal=J.+Health+Psychol.&volume=16&pages=3-11&publication_year=2011&)\\n130. Van den BergAE, MaasJ, VerheijRA, GroenewegenPP. 130.\\u20022010.  Green space as a buffer between stressful life events and health. Soc. Sci. Med.70:1203–10[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&author=AE+Van+den+Berg&author=J+Maas&author=RA+Verheij&author=PP+Groenewegen&journal=Soc.+Sci.+Med.&volume=70&pages=1203-10&publication_year=2010&)\\n131. Van den BergAE, van Winsum-WestraM, de VriesS, van DillenSME. 131.\\u20022010.  Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. Environ. Health9:74[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&author=AE+Van+den+Berg&author=M+van+Winsum-Westra&author=S+de+Vries&author=SME+van+Dillen&journal=Environ.+Health&volume=9&pages=74&publication_year=2010&)\\n132. Van HerzeleA, BellS, HartigT, PodestaMTC, van ZonR. 132.\\u20022011.  Health benefits of nature experience: the challenge of linking practice and research.  See Ref. 98 169–82\\n133. Ward ThompsonC, AspinallP, MontarzinoA. 133.\\u20022008.  The childhood factor: adult visits to green places and the significance of childhood experience. Environ. Behav.40:111–43[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&author=C+Ward+Thompson&author=P+Aspinall&author=A+Montarzino&journal=Environ.+Behav.&volume=40&pages=111-43&publication_year=2008&)\\n134. Ward ThompsonC, RoeJ, AspinallP, MitchellR, ClowA, MillerD. 134.\\u20022012.  More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. Landsc. Urban Plann.105:221–29[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&author=C+Ward+Thompson&author=J+Roe&author=P+Aspinall&author=R+Mitchell&author=A+Clow&author=D+Miller&journal=Landsc.+Urban+Plann.&volume=105&pages=221-29&publication_year=2012&)\\n135. WellsNM, EvansGW. 135.\\u20022003.  Nearby nature—a buffer of life stress among rural children. Environ. Behav.35:311–30[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&author=NM+Wells&author=GW+Evans&journal=Environ.+Behav.&volume=35&pages=311-30&publication_year=2003&)\\n136. WellsNM, LekiesKS. 136.\\u20022006.  Nature and the life course: pathways from childhood nature experiences to adult environmentalism. Child. Youth Environ.16:1–24[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&author=NM+Wells&author=KS+Lekies&journal=Child.+Youth+Environ.&volume=16&pages=1-24&publication_year=2006&)\\n137. WhitelawS. 137.\\u20022012.  The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. Crit. Public Health22:427–40[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&author=S+Whitelaw&journal=Crit.+Public+Health&volume=22&pages=427-40&publication_year=2012&)\\n138. 138.\\u2002WHO (World Health Organ.)1946. Preamble to the Constitution of the World Health Organization as adopted by the International Health Conference.  New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n     [\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&publication_year=1946&)\\n139. WilsonSJ, LipseyMW. 139.\\u20022000.  Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. Eval. Program Plann.23:1–12[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&author=SJ+Wilson&author=MW+Lipsey&journal=Eval.+Program+Plann.&volume=23&pages=1-12&publication_year=2000&)\\n140. YooMH, KwonYJ, SonKC, KaysSJ. 140.\\u20022006.  Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. J. Am. Soc. Hort. Sci.131:452–58[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&author=MH+Yoo&author=YJ+Kwon&author=KC+Son&author=SJ+Kays&journal=J.+Am.+Soc.+Hort.+Sci.&volume=131&pages=452-58&publication_year=2006&)\\n141. ZickCD, SmithKR, Kowaleski-JonesL, UnoC, MerrillBJ. 141.\\u20022013.  Harvesting more than vegetables: the potential weight control benefits of community gardening. Am. J. Public Health103:e1–6[\\\\[Google Scholar\\\\]](http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&author=CD+Zick&author=KR+Smith&author=L+Kowaleski-Jones&author=C+Uno&author=BJ+Merrill&journal=Am.+J.+Public+Health&volume=103&pages=e1-6&publication_year=2013&)\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n![Loading](https://www.annualreviews.org/images/jp/spinner.gif)\\n\\nNature and Health\\n\\nAnnual Review of Public Health 35, 207 (2014); [https://doi.org/10.1146/annurev-publhealth-032013-182443](https://doi.org/10.1146/annurev-publhealth-032013-182443 \"undefined - opens in new window/tab\")\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n![Loading](https://www.annualreviews.org/images/jp/spinner.gif)\\n\\nData & Media loading...\\n\\n#### Supplementary Data\\n\\n- Download [**Supplemental References**](https://www.annualreviews.org/deliver/fulltext/publhealth/35/1/pu35_hartig_supmat.pdf?itemId=/content/suppdata/10.1146/annurev-publhealth-032013-182443/1) (PDF)\\n\\n**Audio:** Terry Hartig, Richard Mitchell, Sjerp de Vries, and Howard Frumkin discuss the current state of research on the impact that contact with nature has on individual and population health.\\n\\n\\n\\nSoundCloud Widget\\n\\n\\n### Most Read This Month\\n\\nArticle\\n\\n- - ### [Social Connection as a Public Health Issue: The Evidence and a Systemic Framework for Prioritizing the “Social” in Social Determinants of Health](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052020-110732)\\n\\n\\n\\n\\n\\n    Julianne Holt-Lunstad\\n\\n\\n\\n\\n\\n    pp.193–213\\n    (21)\\n\\n\\n- - ### [Understanding and Responding to Health Literacy as a Social Determinant of Health](https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102529)\\n\\n\\n\\n\\n\\n    Don Nutbeam\\xa0and\\n    Jane E. 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href=\"https://www.annualreviews.org/content/journals/publhealth\" class=\"item-meta-data__journal-title-link\">\\nAnnual Review of Public Health\\n</a>\\n</h3>\\n<a href=\"https://www.annualreviews.org/content/journals/publhealth/35/1\" title=\"\" class=\"item-meta-data__issue-title-link\">\\n<h4 class=\"item-meta-data__journal-issue\" title=\"Volume 35, Issue 1\">Volume 35, 2014</h4>\\n</a>\\n</div>\\n<div class=\"hidden-xs article-access-icon-and-access item-meta-data__accreditation\">\\n<h4 class=\"article-type item-meta-data__type\">Review Article</h4>\\n<h4 class=\"article-access item-meta-data__oa\"> \\n<span class=\"accesstext\">Free</span>\\n</h4>\\n</div>\\n<h1 class=\"item-meta-data__item-title\">\\nNature and Health\\n</h1>\\n<ul class=\"list-unstyled article-meta-data item-meta-data__article\"> \\n<li class=\"data-author article-meta-data__item item-meta-data__author\">\\n<span class=\"meta-value authors\"><a href=\"https://www.annualreviews.org/search?value1=Terry+Hartig&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Terry Hartig</a><sup>1</sup>, <a href=\"https://www.annualreviews.org/search?value1=Richard+Mitchell&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Richard Mitchell</a><sup>2</sup>, <a href=\"https://www.annualreviews.org/search?value1=Sjerp+de+Vries&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Sjerp de Vries</a><sup>3</sup>&nbsp;and <a href=\"https://www.annualreviews.org/search?value1=Howard+Frumkin&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Howard Frumkin</a><sup>4</sup></span>\\n</li>\\n<li class=\"data-author article-meta-data__item item-meta-data__author-affiliations\">\\n<div class=\"showhide spacing\">\\n<a id=\"showHideAffiliation\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" role=\"button\" class=\"std-display viewHideAffiliation js-showhide\" aria-expanded=\"false\" aria-controls=\"showHideAffiliationContent\">\\n<span class=\"js-plus\">\\n<i class=\"fa fa-plus-circle\"></i>\\n<span class=\"underline\">\\nView Affiliations\\n</span>\\n</span>\\n<span class=\"js-minus minus\">\\n<i class=\"fa fa-minus-circle\"></i>\\n<span class=\"underline\">\\nHide Affiliations\\n</span>\\n</span>\\n</a>\\n<div id=\"showHideAffiliationContent\" class=\"js-description minus\">\\n<div class=\"affiliation-details\">\\n<!-- -->\\n<span class=\"meta-value affiliations\">\\n<sup>1</sup>Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: <a href=\"mailto:terry.hartig@ibf.uu.se\">terry.hartig@ibf.uu.se</a>\\n</span>\\n<!-- , -->\\n<span class=\"meta-value affiliations\">\\n<sup>2</sup>Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: <a href=\"mailto:Richard.Mitchell@glasgow.ac.uk\">Richard.Mitchell@glasgow.ac.uk</a>\\n</span>\\n<!-- , -->\\n<span class=\"meta-value affiliations\">\\n<sup>3</sup>Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: <a href=\"mailto:sjerp.devries@wur.nl\">sjerp.devries@wur.nl</a>\\n</span>\\n<!-- and -->\\n<span class=\"meta-value affiliations\">\\n<sup>4</sup>School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: <a href=\"mailto:frumkin@uw.edu\">frumkin@uw.edu</a>\\n</span>\\n</div>\\n<div class=\"institutionLinks\">\\n<div class=\"instList\">\\n</div>\\n</div>\\n</div>\\n</div>\\n</li>\\n<li class=\"article-meta-data__item item-meta-data__date-and-doi\">\\n<span class=\"meta-container\">\\nVol. 35:207-228\\n(Volume publication date March 2014)\\n</span>\\n<a href=\"https://doi.org/10.1146/annurev-publhealth-032013-182443\" class=\"externallink meta-container meta-container__value item-meta-data__doi meta-container--doi hidden-xs\">https://doi.org/10.1146/annurev-publhealth-032013-182443</a>\\n</li>\\n<li>\\nFirst published as a Review in Advance on \\nJanuary 02, 2014\\n</li> \\n<li>\\n<div class=\"copyright-info\" dir=\"auto\">\\n© Annual Reviews\\n</div>\\n</li>\\n</ul>\\n</div>\\n</div>\\n \\n\\n<section id=\"tabbedpages\" class=\"tabs icon-image-content\">\\n<div id=\"abstract_content\" class=\" tab-pane abstract tabbedsection\">\\n<div class=\"articleabstract\">\\n<h3 dir=\"auto\">Abstract</h3>\\n<div dir=\"auto\">\\n<div class=\"description\"><p>Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [<a href=\"http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001\" target=\"xrefwindow\">Erratum</a>]</p></div>\\n</div>\\n</div>\\n<ul class=\"list-inline border-right-list article-dates\">\\n</ul> \\n<div class=\"bottom-side-nav\">\\n<span>\\n<strong dir=\"auto\">\\nKeyword(s):\\n</strong>\\n</span>\\n<a href=\"https://www.annualreviews.org/search?value1=%22community+gardens%22&amp;option1=pub_keyword\" title=\"community gardens\">community gardens</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22green+infrastructure%22&amp;option1=pub_keyword\" title=\"green infrastructure\">green infrastructure</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22green+space%22&amp;option1=pub_keyword\" title=\"green space\">green space</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22greenspace%22&amp;option1=pub_keyword\" title=\"greenspace\">greenspace</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22landscape%22&amp;option1=pub_keyword\" title=\"landscape\">landscape</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22parks%22&amp;option1=pub_keyword\" title=\"parks\">parks</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22urban+forests%22&amp;option1=pub_keyword\" title=\"urban forests\">urban forests</a>\\n</div>\\n<div class=\"metaDataBlock\">\\n<div class=\"metaDataBlock__Item\">\\n<h3 class=\"metaDataBlock__title h5\">\\nAssociated Article\\n</h3>\\n<div class=\"consanguinityBlurbContainer\">\\nThere are media items related to this article:\\n</div>\\n<a href=\"https://www.annualreviews.org/content/multimedia/10.1146/do.multimedia.2014.05.13.269\">Nature and Health</a>\\n</div>\\n<div class=\"metaDataBlock__Item\">\\n<h3 class=\"metaDataBlock__title h5\">\\nErratum\\n</h3>\\n<div class=\"consanguinityBlurbContainer\">\\nAn erratum has been published for this article:\\n</div>\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-pu-35-102115-200001\">Nature and Health</a>\\n</div>\\n</div>\\n</div>\\n<div id=\"metrics_content\" class=\"tab-pane metrics hidden-js-div tabbedsection\">\\n<div class=\"itemMetricsLoading\">\\n<img src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<p>Article metrics loading...</p>\\n</div>\\n<div class=\"metricsContainer retrieveMetrics\">\\n<div class=\"hiddenjsdiv metricsItemId\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"hiddenjsdiv metricsPubDate\">2014-03-18</div>\\n<div class=\"hiddenjsdiv metricsEndDate\">2025-07-29</div>\\n<div class=\"hiddenjsdiv\" id=\"graph1Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"hiddenjsdiv\" id=\"graph2Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"hiddenjsdiv \" id=\"graph3Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"metricsDetails\">\\n</div>\\n</div>\\n</div>\\n<div id=\"html_fulltext\" class=\"htmlfulltext hidden-js-div tabbedsection tab-pane active\">\\n<form name=\"pptForm\" class=\"hidden pptForm\" id=\"pptDwnld\" action=\"https://www.annualreviews.org/contentexport/powerpoint/powerpoint.action\" method=\"POST\">\\n\\n\\n\\n\\n\\n\\n\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"pptDownload\">Download as PowerPoint</a>\\n</form>\\n\\n<span class=\"showPPT\" data-showppt=\"true\"></span>\\n<div id=\"itemFullTextId\" class=\"itemFullTextHtml\" data-fulltexturl=\"/deliver/fulltext/publhealth/35/1/annurev-publhealth-032013-182443.html?itemId=/content/journals/10.1146/annurev-publhealth-032013-182443&amp;mimeType=html&amp;fmt=ahah\" data-fulltextunavailablemsg=\"<span dir=&quot;auto&quot;>The full text of this item is not currently available.</span>\" data-fulltextexpandlinktext=\"Toggle display:\" data-hideinlinetablesbydefault=\"false\" data-showreferenceoverlaypopup=\"true\"><!--?xml version=\"1.0\" encoding=\"UTF-8\"?--><div xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" id=\"html-body\">\\n\\n<div id=\"article-level-0-front-and-body\" class=\"article-level-0-front-and-body\">\\n<ul xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"flat fm article-header-metadata\"><li></li><li>ISSN: <span class=\"issn\">0163-7525</span>, Online ISSN: <span class=\"oissn\">1545-2093</span></li><li>DOI: <span class=\"doi\">http://dx.doi.org/10.1146/annurev-publhealth-032013-182443</span></li><li>Volume <span class=\"volume\">35</span>, Issue <span class=\"issue\">1</span>, pages <span class=\"first-page\">207</span>-<span class=\"last-page\">228</span></li><li><span class=\"copyright\">Copyright © 2014 by Annual Reviews. All rights reserved</span>&nbsp;</li></ul><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection article-title-and-authors\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"top-1\" id=\"top-1\">\\n                                &nbsp;\\n                            </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><h1><span class=\"article-title\">Nature and Health</span></h1><ul class=\"flat authors\">Terry Hartig<span class=\"au-label\">\\n                  1\\n               </span>; Richard Mitchell<span class=\"au-label\">\\n                  2\\n               </span>; Sjerp de Vries<span class=\"au-label\">\\n                  3\\n               </span>; Howard Frumkin<span class=\"au-label\">\\n                  4\\n               </span></ul><ul class=\"flat affiliations\">\\n               <sup xmlns:f=\"http://www.example.org/functions\">1</sup>Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: <a href=\"mailto:terry.hartig@ibf.uu.se\">terry.hartig@ibf.uu.se</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">2</sup>Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: <a href=\"mailto:Richard.Mitchell@glasgow.ac.uk\">Richard.Mitchell@glasgow.ac.uk</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">3</sup>Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: <a href=\"mailto:sjerp.devries@wur.nl\">sjerp.devries@wur.nl</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">4</sup>School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: <a href=\"mailto:frumkin@uw.edu\">frumkin@uw.edu</a>\\n            </ul><div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection article-abstract\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"abstract-1\" id=\"abstract-1\">ABSTRACT</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><p>Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [<a target=\"xrefwindow\" href=\"http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001\">Erratum</a>]</p>\\n<span class=\"tl-lowest-section\">Keywords</span><ul class=\"flat keywords\"><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22greenspace%22\">greenspace</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22green%20space%22\">green space</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22green%20infrastructure%22\">green infrastructure</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22landscape%22\">landscape</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22parks%22\">parks</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22urban%20forests%22\">urban forests</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22community%20gardens%22\">community gardens</a></li></ul><div class=\"clearer\">&nbsp;</div></div>\\n\\n\\n\\n\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"introduction-1\" id=\"introduction-1\">INTRODUCTION</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>The public health field views the natural environment with ambivalence. Infectious agents, extreme weather, and geological events regularly sicken, injure, and kill people, often en masse. Yet, people cannot remain healthy without clean air, clean water, food, and other resources provided as “ecosystem services.” Enormous amounts of research inform these contrasting perspectives, describing how the natural environment harms humans, how health depends on the natural environment, and how human impacts on the natural environment rebound on health.</p>\\n\\n         <p>A theme that has become increasingly distinct over recent years concerns the natural environment, or “nature,” perceived, valued, and engaged with as such, particularly in urbanized societies. This research focuses primarily on benefits of contact with nature. Key segments of this literature are young, but central ideas, such as the link between vegetation and air quality, have ancient provenance in the public health field (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B82\" data-original-title=\"\" title=\"\">82</a></span>). Interventions prompted by those ideas, such as urban parks, have long remained in place, presumably because the public has enjoyed them and believed in their salutary value. The recent research tests such beliefs, and it encourages more nuanced theoretical and practical consideration of nature-health relations.</p>\\n\\n         <p>In this article, we review work done in recent decades to better characterize the health benefits of contact with nature. We do not cover this body of work comprehensively, but instead we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations. We touch on clinically oriented work on contact with nature in therapeutic contexts, but we do not discuss benefits of companion animals, which may be taken as representations of nature (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42\" data-original-title=\"\" title=\"\">42</a></span>; however, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B6\" data-original-title=\"\" title=\"\">6</a></span>). Although the core ideas we discuss have a durable legacy in public health practice, the topic has not previously been the focus of an <span class=\"jp-italic\">Annual Review of Public Health</span> article (however, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B44\" data-original-title=\"\" title=\"\">44</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B80\" data-original-title=\"\" title=\"\">80</a></span>).</p>\\n\\n         <p>Below, we examine the concept of nature, consider reasons for the current expansion of research, and provide a “review of reviews.” We then review research on pathways involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"definingnature-1\" id=\"definingnature-1\">DEFINING “NATURE”</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>In an objective sense, “nature” as used here refers to physical features and processes of nonhuman origin that people ordinarily can perceive, including the “living nature” of flora and fauna, together with still and running water, qualities of air and weather, and the landscapes that comprise these and show the influence of geological processes. As such, “nature” overlaps substantially with “natural environment,” an environment with little or no apparent evidence of human presence or intervention, and the two terms have been used interchangeably.</p>\\n\\n         <p>In practice, however, much research does not accept exclusion of the artificial as a basis for defining nature or natural environment. The nature of interest is often situated in built environments, as with indoor plants and street trees. Similarly, allotment (or community) gardens and urban parks comprise natural features, appear natural, and provide opportunities to engage with and follow natural processes, but they are typically designed, constructed, regulated, and maintained. Research has also acknowledged that a person may experience nature as such when viewing natural elements or landscapes from a building or vehicle, in photographs and films, or in virtual reality setups.</p>\\n\\n         <p>The term “urban nature” is instructive. It admits the presence of nature even in those human environments that some consider the antithesis of the natural. Yet, just as it puts the urban and natural together, it also sets them apart. It exemplifies how contacts with nature in an urbanized society occur within a frame of reference shaped in an everyday life oriented in various ways to the society\\'s urban circumstances.</p>\\n\\n         <p>The term “<span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">nature experience</a></span>” is used in some segments of this research to emphasize the subjective perception and evaluation of relevant environmental features (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67\" data-original-title=\"\" title=\"\">67</a></span>). It is, however, not a purely individual subjectivity, nor is it fixed. An individual\\'s experience of nature occurs within and carries further the long-running exchange between the society and its environment (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B48\" data-original-title=\"\" title=\"\">48</a></span>).</p>\\n\\n         <p>In sum, although nature has a wide variety of objective referents, it is also experienced subjectively and is effective as a social construction (for further discussion, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B106\" data-original-title=\"\" title=\"\">106</a></span>). Accordingly, researchers represent nature with diverse physical and spatial variables, encountered in diverse activity contexts. Some also apply measurement, analysis, and design strategies to tap into the subjective experience of the environment. Because opportunities for contact with nature, ways of encountering nature, and experiences of nature vary across sociocultural contexts, researchers have examined variation in outcomes not only among individuals within given populations, but also across populations (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108\" data-original-title=\"\" title=\"\">108</a></span>).</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"somereasonsforthecurrentresearchexpansion-1\" id=\"somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Growth in this field of research is shown clearly by the increase in publications. For example, a search in the Web of Knowledge on just one term, “greenspace and health,” yielded 2 hits for 1990–1999, 34 for 2000–2009, and 45 from 2010 to June 2013.</p>\\n\\n         <p>Why is this expansion occurring? Motives for involvement in the field vary. Some work reflects concerns that urbanization, environmental degradation, and lifestyle changes are quantitatively and qualitatively diminishing possibilities for human contact with nature. For example, dense urban settings, if poorly designed (without accessible green space), may reduce opportunities for stress-reducing nature contact as well as increase exposure to environmental stressors (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B53\" data-original-title=\"\" title=\"\">53</a></span>). Other work considers nature as just one aspect of the physical environment that is potentially beneficial for health. For example, epidemic obesity in some countries has focused attention on sedentary lifestyles and environmental supports for physical activity, including but not limited to nearby parks (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B24\" data-original-title=\"\" title=\"\">24</a></span>). In general, the research aims to inform practical measures that directly or indirectly involve access to nature, including provisions for housing, transportation, and recreation.</p>\\n\\n         <p>Change in thinking about health has also enabled expansion of the research field. With the epidemiologic transition to chronic, lifestyle-related diseases as the major causes of mortality, biopsychosocial explanation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B33\" data-original-title=\"\" title=\"\">33</a></span>) came to compete with the biomedical model, and constructs such as “psychological stress” and “social support” came into widespread use. This development has suited a field populated mainly by people trained in disciplines (e.g., human geography, environmental psychology, social epidemiology) and professions (e.g., outdoor recreation management, landscape architecture, urban forestry) that take interest in how people perceive, interpret, evaluate, and act on the environment. The conception of health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity” (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B138\" data-original-title=\"\" title=\"\">138</a></span>, p. 100) has also been influential for its heuristic value and as a basis for action. By acknowledging the positive, multidimensional character and subjective aspects of health, this concept supports the involvement of a wide variety of actors in efforts to understand and support health, including but not limited to those trained to treat symptoms of ill-health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B132\" data-original-title=\"\" title=\"\">132</a></span>). Research in the field accordingly represents health in many ways, not only with regard to forms of morbidity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86\" data-original-title=\"\" title=\"\">86</a></span>), causes of mortality (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>), and longevity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B119\" data-original-title=\"\" title=\"\">119</a></span>) but also with regard to self-reported health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>) and diverse intermediate outcomes involving different pathways, such as beneficial change in emotional and physiological markers of stress measured during visits to natural areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B3\" data-original-title=\"\" title=\"\">3</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n         <p>Methodological and conceptual advances are also feeding the expansion of the field; old and new topics are being studied with a range of new tools. For example, beliefs about stress-reducing effects of park visits are widespread and long-standing (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B101\" data-original-title=\"\" title=\"\">101</a></span>), but experimental testing of such effects is a relatively recent activity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B52\" data-original-title=\"\" title=\"\">52</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B125\" data-original-title=\"\" title=\"\">125</a></span>). These small-scale experimental demonstrations of pathway plausibility informed the first large-scale epidemiologic studies to assess associations between contact with nature and health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87\" data-original-title=\"\" title=\"\">87</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B93\" data-original-title=\"\" title=\"\">93</a></span>). Those studies used resources and techniques that only recently became available. For example, they used land-use data extracted from satellite images with digital technologies to describe the spatial extent of different kinds of nature accessible to the given individuals and groups in their residential contexts.</p>\\n\\n         <p>Having considered some of the developments in societies, sciences, and professions that have motivated and enabled the recent expansion of this field, we turn now to examine the research in more detail, starting with previous efforts to review the literature.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"reviewofreviews-1\" id=\"reviewofreviews-1\">REVIEW OF REVIEWS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Many review articles on nature and human health have been published in recent years. Assessing them is one means of summarizing the state of the field in terms of what is known and the quality of the research. In April 2013, we undertook a systematic search for reviews. We used Medline and all Web of Knowledge databases to identify peer-reviewed papers, sought nonindexed, non-peer-reviewed (gray) literature, and online reviews via Internet searches, and examined citation lists of already identified reviews. We included review articles or reports relevant to relationships between nature and human health and well-being. Inevitably, because the topic boundaries of nature and health are fuzzy, relevance was sometimes difficult to establish. For example, reviews on environmental correlates of physical activity often include access to urban parks or trails among many other environmental characteristics, but they may not focus on natural environments. We identified 59 relevant reviews at the time of the search (see <a target=\"xrefwindow\" href=\"http://www.annualreviews.org/doi/suppl/10.1146/annurev-publhealth-032013-182443\">\\n               <span class=\"jp-bold\">Supplemental Material</span>\\n            </a>). Of the peer-reviewed articles, most appeared in journals concerned with public health or environmental planning.</p>\\n\\n         <p>The reviews varied considerably in methodology and guiding aims. We observed three broad search-and-synthesis approaches: (<span class=\"jp-italic\">a</span>) narrative reviews, not clearly based on a systematic literature search (<span class=\"jp-italic\">n</span> = 24); (<span class=\"jp-italic\">b</span>) narrative reviews based on a systematic literature search or comprehensive case identification (<span class=\"jp-italic\">n</span> = 13); and (<span class=\"jp-italic\">c</span>) full systematic reviews based on an exhaustive literature search (<span class=\"jp-italic\">n</span> = 22). The reviews tended to have one of four general aims. First, systematic reviews sought to collate and synthesize all evidence for the effects of specified contacts with nature on specified markers of health (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2\" data-original-title=\"\" title=\"\">2</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123\" data-original-title=\"\" title=\"\">123</a></span>). Second, summary reviews often aimed to introduce the field, explain its concepts and the mechanisms by which natural environments might affect health, and then set out some evidence for effects (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54\" data-original-title=\"\" title=\"\">54</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B89\" data-original-title=\"\" title=\"\">89</a></span>). Some were published as gray literature and had been commissioned by governmental or nongovernmental agencies. A third group included what might be labeled “flag-waving” reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42\" data-original-title=\"\" title=\"\">42</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B95\" data-original-title=\"\" title=\"\">95</a></span>). These were aimed at introducing the topic to a new audience and were often relatively brief. Fourth, and fewer in number, were conceptual reviews, methodological reviews, or those proposing new theoretical perspectives (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B8\" data-original-title=\"\" title=\"\">8</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B79\" data-original-title=\"\" title=\"\">79</a></span>).</p>\\n\\n         <p>Reviews also varied by the environments and/or pathways to health discussed. Physical activity had the most dedicated coverage as the focus of 18 reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B65\" data-original-title=\"\" title=\"\">65</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90\" data-original-title=\"\" title=\"\">90</a></span>). Mitigation of poor air quality/urban heat problems and physiologically/psychologically restorative effects also had dedicated reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B12\" data-original-title=\"\" title=\"\">12</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B15\" data-original-title=\"\" title=\"\">15</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19\" data-original-title=\"\" title=\"\">19</a></span>). Twenty-six of the reviews addressed multiple mechanisms. The reviews covered a wide range of natural features and environmental categories, including indoor plants (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B16\" data-original-title=\"\" title=\"\">16</a></span>), urban parks (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90\" data-original-title=\"\" title=\"\">90</a></span>), and forests (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B22\" data-original-title=\"\" title=\"\">22</a></span>), but coverage was uneven. Urban parks were the most commonly considered setting. Two categories of environments were conspicuously underrepresented or absent; rural areas had just one review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B41\" data-original-title=\"\" title=\"\">41</a></span>), and there were no review articles about gardens or allotments or community gardens other than those used for therapeutic purposes. Also, very few reviews focused on population subgroups. Children were the most commonly considered subgroup (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B91\" data-original-title=\"\" title=\"\">91</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B96\" data-original-title=\"\" title=\"\">96</a></span>). We found no reviews dedicated to differences in relationships between nature and health by gender, ethnicity, or socioeconomic position.</p>\\n\\n         <p>Given this variety in method, aims, and focus, we find it interesting that there was strong agreement about the methodological state of the art. Reviews commonly concluded that the field remains dominated by observational study designs. Reviews agreed that too few primary studies have been carried out in a consistent and rigorous way to establish the causality of relationships between contact with nature and health. They agreed, too, that few primary studies have explored how effects may vary by population subgroup, by type of natural environment, or by type of contact with nature. Many reviews commented that consistent and objective measurement of both exposure to nature and health-related outcomes remains elusive.</p>\\n\\n         <p>We identified three weaknesses in the reviews with specific relevance to this field. First, search strategies did not always address the variety of environments or settings that count as “natural.” It is necessary to enter multiple terms into the literature search to avoid missing important work. For example, urban parks may be described by one or more of park, green space, greenspace, green areas, open space, recreational space, natural space, natural environment, etc. Building a review of relevant literature on a search for “green space” or “park” alone, for example, is inadequate.</p>\\n\\n         <p>Second, reviews from individual-based disciplines such as psychology tended to ignore evidence from population-based disciplines such as epidemiology, and vice versa. A great strength of this field is that evidence exists to describe benefits of contact with nature at multiple levels, from laboratory experiments tracking individuals\\' physiological reactions to viewing natural scenes through to studies of differences in population mortality rates between more and less green cities. Each level and scale of study provides important components in understanding what contact with nature can and cannot do for human health.</p>\\n\\n         <p>Third, the variety of health outcomes used in primary studies was not well addressed. When reviews try to synthesize results from outcome measures that are sensitive to contact with nature in different ways, and for different durations, messages become clouded. The pooling of results from heterogeneous outcome measures may be motivated by a lack of multiple studies using consistent measures and study designs. However, failure to appreciate differences among outcome measures leads to mischaracterization of the evidence base. Heterogeneity in outcome measures used in primary studies perhaps explains the relatively small number of reviews that attempted a pooled analysis. The body of reviews consequently tells us little about effect size.</p>\\n\\n         <p>Overall, the reviews generally agreed that beneficial effects from contact with nature do occur and that these effects are plausibly connected to the mechanisms proposed in guiding theory. However, most of the evidence covered by the reviews related to intermediate health-related outcomes such as amount of physical activity, amount of social contacts, changes in physiological activity (e.g., cardiovascular, neuroendocrine, and musculoskeletal changes characteristic of stress reduction), changes in emotional states (e.g., increased happiness, decreased anger), and changes in cognitive capability (e.g., performance on standardized tests of executive attention) rather than to disease states or measures of mortality. The reviews found less evidence that traced full pathways from contact with nature, to measures reflecting the operation of the given mechanism(s), and on to longer-term outcomes. Thus, it is unsurprising that the reviews generally suggest that the evidence is not yet good enough to say when, where, and for whom given effects will occur or how large or long-lasting they will be.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"pathwaysthroughwhichcontactwithnaturerelatestohealth-1\" id=\"pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Contact with nature may affect health via multiple pathways. Pathways that have received relatively large amounts of research attention involve air quality, physical activity, social cohesion, and stress reduction. We describe each of these pathways and indicate some of the complexities involved in drawing conclusions about its role, including variation in association across people, activities, and characteristics of the nature under study. The pathways emphasize different aspects of nature, as physical environment, as setting for (individual and social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously and affect one another, a point to which we return at the end of this section. The different pathways and possibilities for effect modification by individual or contextual variables are illustrated in <span xmlns:f=\"http://www.example.org/functions\" class=\"xref\"><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1\" data-original-title=\"\" title=\"\">\\n               <span class=\"jp-bold\">Figure 1</span>\\n            </a></span>.\\n</p><p xmlns:f=\"http://www.example.org/functions\"></p><div class=\"figure html-fulltext-responsive-figure\" id=\"f1\"><div class=\"caption\"><span class=\"captionLabel\"><span class=\"label\">\\n                  <span class=\"jp-bold\">Figure 1</span>\\u2002\\n               </span></span><span class=\"captionText\"><span>Some pathways through which the natural environment can affect the health of broad segments of populations. Four of the pathways go through contact with nature, whereas two others go directly from the natural environment to air quality and stress, respectively, implying that the natural environment may affect health without an individual or group consciously engaging with nature as such. Associations between variables at the different steps in a given pathway are subject to modification by characteristics of the people or the context. The two-headed arrow between the natural environment and contact with nature acknowledges that these are joined in a reciprocal relationship. The two-headed arrows between the variables designating pathways (air quality, physical activity, social contacts, and stress) also speak to their reciprocal relatedness; however, each may be related with all the others and not only with the one adjacent. Abbreviations: CHD, coronary heart disease; CVD, cardiovascular disease.</span>\\n</span></div><div class=\"image\"><a class=\"media-link\" href=\"https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.gif\" id=\"/content/figure/10.1146/annurev-publhealth-032013-182443.f1\" data-fancybox=\"gallery1\"><img src=\"https://www.annualreviews.org/docserver/ahah/fulltext/publhealth/35/1/pu350207.f1_thmb.gif\" border=\"0\" alt=\"\\n                  Figure 1\\u2002\\n               \"><p style=\"margin-bottom:0;\"><span class=\"figure-duplicate-label\">\\n                  Figure 1\\u2002\\n               <br><br></span>Click to view</p></a><a href=\"https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.ppt?mimeType=application/vnd.ms-powerpoint\">\\n                                        Download as PowerPoint\\n                                </a></div><div class=\"clearer\">&nbsp;</div></div><p></p>\\n         <p></p>\\n<!--splitRids is f1--><!--currentRid is f1--><!--current position is 51--><!--check position is 51-->\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Air Quality</span>\\n\\n            <p>Trees, shrubs, and other vegetation may affect ambient air quality and, through it, human health and well-being. There are both positive and negative impacts. Trees and other vegetation may reduce levels of some pollutants, including gases and particulate matter (PM), but they may also contribute to air pollution by releasing hydrocarbons. Some trees and plants release pollen, aggravating allergies. Finally, trees improve air quality indirectly when they cool urban environments and reduce building energy demand.</p>\\n\\n            <p>Trees and other vegetation can reduce levels of gaseous air pollutants [e.g., ozone, oxides of nitrogen (NOx), oxides of sulfur] and PM (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B37\" data-original-title=\"\" title=\"\">37</a></span>). For gases, the primary mechanisms of action are uptake by leaf stomata, absorption, and adsorption to plant surfaces. PM removal occurs through deposition on leaves and other plant surfaces (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B7\" data-original-title=\"\" title=\"\">7</a></span>). However, most <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">PM</a></span> is resuspended to the atmosphere, washed off by rain, or dropped to the ground (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100\" data-original-title=\"\" title=\"\">100</a></span>). Empirical studies (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B34\" data-original-title=\"\" title=\"\">34</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B113\" data-original-title=\"\" title=\"\">113</a></span>) and modeling studies (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B103\" data-original-title=\"\" title=\"\">103</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B120\" data-original-title=\"\" title=\"\">120</a></span>) suggest that urban tree canopy generally reduces air pollution levels by no more than a few percentage points, and often far less, although some results suggest more efficient removal of PM (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B59\" data-original-title=\"\" title=\"\">59</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B63\" data-original-title=\"\" title=\"\">63</a></span>) and certain volatile organic compounds (VOCs) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B70\" data-original-title=\"\" title=\"\">70</a></span>). Because trees may reduce air movement, especially in restricted spaces such as urban “canyons,” they may impede the localized dispersion of pollutants. Local factors such as the density, species composition, and age of the tree canopy, the concentration of air pollutants, and the length of the in-leaf season influence the extent of pollutant removal.</p>\\n\\n            <p>Plants may also affect indoor air quality—an important observation because people in developed nations may spend as much as 90% of their time indoors. <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">VOCs</a></span> such as benzene and formaldehyde may derive from furniture, carpets, cleaning agents, paint, and other sources. Indoor plants, especially such species as English ivy and spider plant, have been shown to reduce levels of many VOCs (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B81\" data-original-title=\"\" title=\"\">81</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B140\" data-original-title=\"\" title=\"\">140</a></span>). Bacteria in the soil may account for some VOC scavenging attributed to the plants (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B102\" data-original-title=\"\" title=\"\">102</a></span>).</p>\\n\\n            <p>In contrast to pollutant removal, trees can also be a source of hydrocarbons, including isoprene and terpenes, with considerable variation by species (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B9\" data-original-title=\"\" title=\"\">9</a></span>). These biogenic hydrocarbons may function as precursors of ozone and secondary organic aerosols (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B20\" data-original-title=\"\" title=\"\">20</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B74\" data-original-title=\"\" title=\"\">74</a></span>). Modeling studies have assessed the relative contribution of biogenic emissions to pollution levels (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B112\" data-original-title=\"\" title=\"\">112</a></span>). Results vary depending on the species of trees in a canopy, local atmospheric chemistry (especially levels of other precursors, such as NOx), local weather, and other factors.</p>\\n\\n            <p>Trees, grasses, and other plants release pollens, which can aggravate allergies and asthma in susceptible people (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B18\" data-original-title=\"\" title=\"\">18</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B27\" data-original-title=\"\" title=\"\">27</a></span>). The culprits vary with geography but include ragweed, grasses (e.g., Timothy, Bermuda, bluegrass), and trees such as catalpa and walnut. In cities that have favored trees that are heavy pollen producers, the health impact may be especially significant (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19\" data-original-title=\"\" title=\"\">19</a></span>). A study of African American and Dominican children in New York City found a small but significant association between tree canopy extent and asthma and allergic sensitization (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B83\" data-original-title=\"\" title=\"\">83</a></span>). Hence, in some circumstances, the allergenic role of trees may eclipse their ability to improve health by reducing air contaminants.</p>\\n\\n            <p>Vegetation, especially trees, may also indirectly benefit air quality. During warm weather, trees reduce summer air conditioning demand by shading and hence cooling buildings and through the cooling effects of evapotranspiration. This effect, in turn, reduces energy demand, which, in areas served by coal-fired power plants, reduces air pollution derived from coal combustion, though not necessarily at the same location (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B1\" data-original-title=\"\" title=\"\">1</a></span>). During cold weather, the reverse can happen. In a simulation study in Sacramento, trees reduced the need for cooling energy in summer about three times more than they increased the need for warming energy in winter (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B114\" data-original-title=\"\" title=\"\">114</a></span>). The monetary benefits of energy savings related to trees may exceed those of the pollutant removal (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B13\" data-original-title=\"\" title=\"\">13</a></span>).</p>\\n\\n            <p>The overall impact of vegetation on air quality is therefore a function of several processes, operating in opposing directions: hydrocarbon emissions, pollen production, pollutant uptake, and effects on energy demand. Careful selection of species, design of planting configurations with regard to wind, shade, and other impacts, and maintenance of urban vegetation can optimize the beneficial effects on air quality (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B30\" data-original-title=\"\" title=\"\">30</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100\" data-original-title=\"\" title=\"\">100</a></span>).</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Physical Activity</span>\\n\\n            <p>Physical activity promotes physical and mental health across the life span (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B10\" data-original-title=\"\" title=\"\">10</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B61\" data-original-title=\"\" title=\"\">61</a></span>). Recent evidence suggests that the health benefits of increased physical activity are largest among those who were initially doing the least (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B104\" data-original-title=\"\" title=\"\">104</a></span>). The outdoor environment may influence how physically active an individual is by offering suitable spaces for certain types of activities. It may also attract people outdoors because of the experiences it offers. Such outings ordinarily entail some form of physical activity, usually walking.</p>\\n\\n            <p>An important precondition for the use of natural environments for physical activity is individuals\\' (perceived) safety (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B62\" data-original-title=\"\" title=\"\">62</a></span>). Although there are possible negative effects associated with physical activity (e.g., sports injuries) as well as with being in a natural environment (e.g., Lyme disease from tick bites), most of these effects are not specific to physical activity in a natural environment.</p>\\n\\n            <p>Green space is only one part or aspect of the physical environment relevant for physical activity. Which environmental characteristics promote or hamper physical activity may depend strongly on the type of activity at hand (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B5\" data-original-title=\"\" title=\"\">5</a></span>). Three broad activity domains may be identified: work (including study), active transport (walking, cycling), and leisure (recreation, sport). Within the work domain, the greenness of the setting is thought to be of little importance for the amount of physical activity. The same is not true for active transport. Natural features may lead people to favor walking or cycling over other transport modes by making routes to destinations more attractive; however, distance to destination, availability of suitable infrastructure (e.g., sidewalks, bicycle paths), and safety are more important factors (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55\" data-original-title=\"\" title=\"\">55</a></span>). The evidence for association between green space and active transport (walking and/or cycling) is mixed, and this heterogeneity has been well summarized by recent systematic reviews (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B40\" data-original-title=\"\" title=\"\">40</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B78\" data-original-title=\"\" title=\"\">78</a></span>). Reasons for (noncausal) negative associations may be that large amounts of green space tend to go together with (<span class=\"jp-italic\">a</span>) greater distances to destinations, (<span class=\"jp-italic\">b</span>) higher levels of car ownership, and (<span class=\"jp-italic\">c</span>) better availability and lower cost of car parking spaces near one\\'s home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B28\" data-original-title=\"\" title=\"\">28</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55\" data-original-title=\"\" title=\"\">55</a></span>).</p>\\n\\n            <p>The importance of natural environments for fostering physical activity may vary by population subgroup. Children are perhaps the most commonly studied subgroup in this context, but again results are mixed. In one review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B29\" data-original-title=\"\" title=\"\">29</a></span>), ∼40% of the studies in which environmental characteristics were objectively measured showed park access or vegetation to be positively associated with children\\'s physical activity levels; in the other 60% of the studies, no association was observed. A further systematic review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B35\" data-original-title=\"\" title=\"\">35</a></span>) concluded that for (young) children the safety of the environment as perceived by their parents was an important moderating factor. Results from studies of older people are also mixed; two recent systematic reviews arrived at different conclusions. One (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B128\" data-original-title=\"\" title=\"\">128</a></span>) reviewed studies on the physical environment in general and concluded that there was no clear relationship between green space (and most other physical environmental characteristics) and physical activity of older people. The other specifically focused on green space, however, and it observed that seven out of eight studies showed a positive relationship between the greenness of the living environment and physical activity levels of older people (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B17\" data-original-title=\"\" title=\"\">17</a></span>). It also concluded that the perception of safety is an important moderating factor.</p>\\n\\n            <p>Relatively little attention has been paid to the relevance of specific environmental characteristics, such as the type of greenery or the quality of the open space. Results are again mixed. One study (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B46\" data-original-title=\"\" title=\"\">46</a></span>) concluded that very good access to large, very attractive public open space was associated with higher levels of walking. Another (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B56\" data-original-title=\"\" title=\"\">56</a></span>) by contrast observed no relationship between access to large, high-quality urban green spaces and recreational physical activity. A third study (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>) observed a relationship of quality (but not quantity) of streetscape greenery with “green” activity, though not with total physical activity. Finally, recent results suggest that community gardening is associated with a lower body mass index (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B141\" data-original-title=\"\" title=\"\">141</a></span>).</p>\\n\\n            <p>Given that physical activity is assumed to be an important pathway joining nature with health, we find it surprising that few studies have formally investigated the extent to which any association between nature and health might be mediated by physical activity levels. Of four studies done (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B88\" data-original-title=\"\" title=\"\">88</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B109\" data-original-title=\"\" title=\"\">109</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>), only one (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>) concluded that physical activity (more specifically recreational walking) was indeed an important mediator.</p>\\n\\n            <p>Finally, we note that most of the studies referred to in this overview have been cross-sectional in nature. Hence, the direction of observed relationships remains open to alternative explanations. For example, some people may choose a highly car-dependent (and presumably more green) living environment because they are not inclined to be physically active anyway (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B32\" data-original-title=\"\" title=\"\">32</a></span>).</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Social Cohesion</span>\\n\\n            <p>Much as for physical activity, abundant research has documented positive associations between social relationships and health and well-being (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B57\" data-original-title=\"\" title=\"\">57</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B97\" data-original-title=\"\" title=\"\">97</a></span>). Such salutary associations have also been observed for positive relationships specifically within the neighborhood (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110\" data-original-title=\"\" title=\"\">110</a></span>). A variety of terms have been introduced to reflect the potential value of social relationships in this context, including social capital, social support, social cohesion, and sense of community. Although these terms are often used interchangeably (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4\" data-original-title=\"\" title=\"\">4</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110\" data-original-title=\"\" title=\"\">110</a></span>), we draw a distinction here between social capital and social cohesion. Social capital comprises primarily those resources available to an individual through his or her social connections, which may be activated in times of need. In contrast, social cohesion refers to shared norms and values, the existence of positive and friendly relationships, and feelings of being accepted and belonging (cf. 36). We prefer to use the term social cohesion here because it is more a characteristic of neighborhoods than of individuals (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4\" data-original-title=\"\" title=\"\">4</a></span>) and so more likely to be influenced by physical characteristics of the neighborhood, such as the availability and quality of green space and natural elements.</p>\\n\\n            <p>Unlike physical activity, the environmental correlates of social cohesion have received little research attention thus far. Generally, the few studies available suggest a positive relationship between social cohesion and natural environments (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B38\" data-original-title=\"\" title=\"\">38</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85\" data-original-title=\"\" title=\"\">85</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>). Sugiyama et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>), for example, found perceived social coherence and local social interaction to be associated with the perceived greenness of the neighborhood. De Vries et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>) found an association between streetscape greenery and perceived social cohesion at the neighborhood scale, both for the quantity and, even more strongly, for the quality of greenery.</p>\\n\\n            <p>Social cohesion within a neighborhood does not lend itself to experimental research, which makes it difficult to determine whether relations with environmental features are causal. A few studies have, however, taken advantage of circumstances that likened a natural experiment. Researchers in Chicago (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77\" data-original-title=\"\" title=\"\">77</a></span>) took advantage of quasi-random assignment of public housing residents to dwelling units in architecturally similar high-rise buildings with varying amounts of vegetation outside. They found a positive association between the presence of trees and grass on the use of common spaces and informal social contact with neighbors. Moreover, the relationship between greenery and social contacts appeared to be mediated by the use of the common spaces.</p>\\n\\n            <p>The research in Chicago (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77\" data-original-title=\"\" title=\"\">77</a></span>) also showed that social contact was positively related to one\\'s sense of safety. Subsequent studies showed that residents with more trees and grass around their buildings displayed less aggressive behavior, and their buildings were associated with fewer crimes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75\" data-original-title=\"\" title=\"\">75</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76\" data-original-title=\"\" title=\"\">76</a></span>). More recent research suggests similar positive effects of greening vacant lots, especially a reduction in gun assaults and disorderly conduct (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14\" data-original-title=\"\" title=\"\">14</a></span>).</p>\\n\\n            <p>Other attributes of the environment may moderate any association between natural features and social cohesion. Arguably, local parks must be well maintained and provide attractive recreational facilities to realize their full potential in developing social ties (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B71\" data-original-title=\"\" title=\"\">71</a></span>). Although green space generally is positively associated with feelings of safety, in dense urban areas enclosed green spaces may reduce such feelings (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B84\" data-original-title=\"\" title=\"\">84</a></span>). Similarly, trees in the public realm have been associated with reduced crime rates, but small trees on private lots have been associated with increased crime rates, presumably because these trees make it more difficult to observe criminal activity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B31\" data-original-title=\"\" title=\"\">31</a></span>). Some natural settings, such as community gardens, incorporate social ties almost by definition. In one study, older allotment gardeners reported having more contacts with friends and felt less lonely than did nongardening neighbors in the same age category (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B131\" data-original-title=\"\" title=\"\">131</a></span>).</p>\\n\\n            <p>The question remains whether social cohesion, sense of safety, aggressive behavior, and crime rates mediate an eventual relationship between contact with nature and health. Results from a few cross-sectional studies bear on this point. One found that social cohesion partially mediated the relationship between perceived neighborhood greenness and mental health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>). Another concluded that feelings of loneliness and perceived shortage of social support partially mediated the relationship between the amount of green space within one kilometer and overall health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85\" data-original-title=\"\" title=\"\">85</a></span>). A third found that social cohesion mediated relationships between quantity and quality of streetscape greenery and both overall health and mental health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>). In contrast, Francis et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B39\" data-original-title=\"\" title=\"\">39</a></span>) found neither sense of community nor social support to be an important mediator of the relationship between the quality of public open space and mental health. No studies were identified on mediation by aggressive behavior, fear of crime, and/or crime rates.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Stress Reduction</span>\\n\\n            <p>By helping people maintain adaptive resources needed to meet the demands of life, nature can reduce risk of illnesses involving chronic stress, as well as promote a range of intermediate outcomes such as increased subjective well-being. It can do so in two general ways. First, natural areas and features can reduce exposure to challenging environmental conditions by increasing distance to stressors and/or decreasing their perceptual salience. For example, green spaces between residences and heavily trafficked roads can reduce occupant noise annoyance (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B99\" data-original-title=\"\" title=\"\">99</a></span>), vegetation can conceal displeasing structures (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B115\" data-original-title=\"\" title=\"\">115</a></span>), and landscaping around housing can help residents maintain privacy and avoid feelings of crowding (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B23\" data-original-title=\"\" title=\"\">23</a></span>).</p>\\n\\n            <p>Second, nature can help people restore their adaptive resources. Escape from physical and social stressors has long been described as an important motive for recreation in natural areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B58\" data-original-title=\"\" title=\"\">58</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72\" data-original-title=\"\" title=\"\">72</a></span>). Nature\\'s restorative quality does not, however, depend only on an absence of stressors; its restorative quality is also defined in positive terms. Another persistent motive for outdoor recreation has been appreciation of nature—for beautiful scenery, symbolic qualities, and other valued attributes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72\" data-original-title=\"\" title=\"\">72</a></span>). Push and pull motives also work in tandem in contexts other than outdoor recreation, notably the residential context. For example, residential location decisions commonly reflect efforts to both minimize stressful exposures and enhance access to restorative amenities, including green (or blue, i.e., water) areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B51\" data-original-title=\"\" title=\"\">51</a></span>).</p>\\n\\n            <p>This motive combination appears in two theories about how nature can promote more rapid and complete restoration than other environments can. They offer contrasting views on how restoration can proceed once a person has gained psychological distance from threats and other demands. Psychoevolutionary theory holds that, for a person experiencing acute stress, nature contact can very rapidly evoke positive affect, which in turn blocks negative thoughts and feelings and fosters reduction of physiological activation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B126\" data-original-title=\"\" title=\"\">126</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B127\" data-original-title=\"\" title=\"\">127</a></span>). Evolution purportedly conserved this functional aesthetic response because more rapid recovery from acute stress would have helped proto-humans better prepare for the next survival task. In contrast, attention restoration theory holds that effortless attention engaged by intrinsically interesting aspects of nature enables rest for a fatigued neurocognitive inhibitory mechanism engaged when willfully directing attention (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67\" data-original-title=\"\" title=\"\">67</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68\" data-original-title=\"\" title=\"\">68</a></span>). People must inhibit task-irrelevant stimuli as they direct their attention at work and in many other circumstances. Fatigue of this directed attention capability occurs commonly, undermines effective action, and can increase susceptibility to stress (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68\" data-original-title=\"\" title=\"\">68</a></span>).</p>\\n\\n            <p>Informed by one or both of these theories, true and quasi-experiments done in laboratory and field settings have assessed diverse affective, cognitive, and physiological effects of more and less natural comparison conditions, realized over varying but generally brief time spans after a naturalistic or experimental induction of a need for restoration. Published studies generally report some restorative advantage of nature, and by 2004, reviewers had judged the evidence for restorative effects of nature to be strong (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54\" data-original-title=\"\" title=\"\">54</a></span>). More recently, methodological heterogeneity led other reviewers (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B11\" data-original-title=\"\" title=\"\">11</a></span>) to include only 3–6 studies in quantitative syntheses for each of several outcomes. They concluded, nonetheless, that the available studies provided reliable evidence of reductions in self-reported anger, fatigue, anxiety, and sadness and an increase in feelings of energy. They also found tentative evidence of enhanced attention. Conclusions regarding physiological effects were limited by a lack of studies that had the desired design features. Studies done since that 2010 review have further expanded the body of experimental evidence in several directions: additional comparison conditions [e.g., more or less open vegetation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B45\" data-original-title=\"\" title=\"\">45</a></span>); encountered in different ways, e.g., work site desktop relaxation packages (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B60\" data-original-title=\"\" title=\"\">60</a></span>)], alone or in company (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B64\" data-original-title=\"\" title=\"\">64</a></span>), and in additional subpopulations [e.g., children with attention deficit disorder (ADD) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121\" data-original-title=\"\" title=\"\">121</a></span>), with effects registered using additional measurement techniques (e.g., cortisol; <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B129\" data-original-title=\"\" title=\"\">129</a></span>)].</p>\\n\\n            <p>Other research assumes cumulative health effects of more effective restoration on many occasions over time. That work is bolstered by studies that situate repeated contact with nature into an ongoing process of self-regulation. Such studies recognize that some people learn that natural settings are more likely than other settings to be restorative. Over time, they apply this knowledge to better manage adaptive resources such as attentional capacity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B69\" data-original-title=\"\" title=\"\">69</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B73\" data-original-title=\"\" title=\"\">73</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B116\" data-original-title=\"\" title=\"\">116</a></span>). When and how that learning begins remain understudied, but childhood experience appears influential for environmental attitudes measured in later life (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B133\" data-original-title=\"\" title=\"\">133</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B136\" data-original-title=\"\" title=\"\">136</a></span>). Some research does suggest that restorative childhood contact with nature can cumulatively provide benefits with far-reaching developmental significance. Contact with nature may for example improve attentional function in children with <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">ADD</a></span> (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121\" data-original-title=\"\" title=\"\">121</a></span>) and enhance self-discipline in children without a diagnosis (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B122\" data-original-title=\"\" title=\"\">122</a></span>).</p>\\n\\n            <p>Observational studies commonly cite nature\\'s cumulative stress-reducing or restorative effects as one plausible pathway by which residential green space might affect perceived health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87\" data-original-title=\"\" title=\"\">87</a></span>), diverse forms of morbidity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86\" data-original-title=\"\" title=\"\">86</a></span>), and death from circulatory disease and other causes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>). To date, however, most studies with individual data have not directly addressed a stress-reduction pathway owing to a lack of measures suitable for assessing mediation. One early quasi-experiment did however assess mediation with reference to attention restoration (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76\" data-original-title=\"\" title=\"\">76</a></span>), and some recent surveys have begun to address this issue with self-report measures (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B117\" data-original-title=\"\" title=\"\">117</a></span>). Another study has considered variation in the level of cortisol as a biomarker of chronic stress in members of a community sample living in more or less green circumstances (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B134\" data-original-title=\"\" title=\"\">134</a></span>); such a measure could serve tests of mediation of the effect of nature on stress-related illnesses.</p>\\n\\n            <p>Some studies have framed nature as a stress buffer, which has entailed estimating the interactive effect of stressful demands and access to nature on some health outcome. Several studies focused on nature in the residential context are illustrative. In a study done in rural New York state, conflicts at school experienced during the preceding three months were less strongly associated with psychological distress in children who had more nature in and around the home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B135\" data-original-title=\"\" title=\"\">135</a></span>). In a Dutch study, the relationships between stressful life events in the previous three months and both health complaints and perceived general health were weaker among those with more green space within 3 km of the home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B130\" data-original-title=\"\" title=\"\">130</a></span>). In an ecological study covering the population of England, high income deprivation had a weaker association with all-cause and circulatory disease mortality among people living in areas with relatively large amounts of green space (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>).</p>\\n\\n            <p>In sum, substantial evidence speaks to the potential benefits of contact with nature for avoiding health problems traceable to chronic stress and attentional fatigue; however, the greater part of this evidence concerns the short-term restorative benefits of single encounters with or experiences in nature.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">The Pathways Intertwine</span>\\n\\n            <p>Discussions of air quality, physical activity, social cohesion, and stress-reduction pathways emphasize different aspects of nature: as physical environment, as setting for (individual or social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously, as illustrated in <span xmlns:f=\"http://www.example.org/functions\" class=\"xref\"><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1\" data-original-title=\"\" title=\"\">\\n                  <span class=\"jp-bold\">Figure 1</span>\\n               </a></span>.</p>\\n<!--splitRids is f1--><!--currentRid is f1--><!--current position is 167--><!--check position is 51-->\\n            <p>Most individual studies have focused on one particular pathway from nature to health, but some research has addressed combinations involving two or more of them. Much of this work has recognized links between physical activity and stress reduction. People commonly engage in physical activity not only or even primarily because it will serve their health in the long run, but also because it helps them to feel good in the short run, sometimes by reducing tension and stress. Conversely, people who want to enter a natural environment for restoration ordinarily must engage in some form of physical activity to do so. Accordingly, experiments have found “green exercise” more psychologically beneficial than the same exercise in settings with relatively little nature (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B92\" data-original-title=\"\" title=\"\">92</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B105\" data-original-title=\"\" title=\"\">105</a></span>). Thus, being active in natural settings may yield health benefits over and above the benefits of physical activity in other environments (for a meta-analysis, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123\" data-original-title=\"\" title=\"\">123</a></span>). Conversely, a person walking or running along city streets may have to endure aversive conditions that reduce the benefits of the activity itself (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n            <p>Multiple pathways may be purposefully combined in cultural practices that regularly bring people in contact with nature. For example, community gardening may promote social contacts during moderate physical activity that also supports restoration from stress associated with work or other demands. The Japanese practice of Shinrin-yoku, or forest-bathing, involves beliefs about the salutary values of certain substances in the air, and it entails behaviors that ordinarily promote stress reduction (e.g., distancing oneself from everyday demands, adopting a meditative stance) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B124\" data-original-title=\"\" title=\"\">124</a></span>).</p>\\n\\n            <p>Some cultural practices that engage multiple pathways may however not be salutary for all population subgroups. For example, in some countries, many households maintain a simple, inexpensive leisure home in the countryside, to which family members ordinarily travel together during vacation periods; however, as a domestic setting, the leisure home may also impose unwanted demands and on some household members more than others. Swedish research found that, after several years of follow-up, employed men who owned a leisure home had lower odds of retiring early for health reasons (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B50\" data-original-title=\"\" title=\"\">50</a></span>); however, this prospective association did not hold for women. Indeed, among highly educated and highly paid women, the likelihood of early retirement for health reasons was greater if they also owned a leisure home. Other studies have also indicated a potential gender difference in the nature-health relationship (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B107\" data-original-title=\"\" title=\"\">107</a></span>).</p>\\n\\n         </div>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"methodologicalchallenges-1\" id=\"methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>In addition to the usual methodological concerns in experimental and epidemiologic research, we must tackle a litany of specific methodological challenges if we are to develop our understanding of the degree to which, how, and under which circumstances contact with nature affects human health and well-being.</p>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Measuring Exposure to Nature</span>\\n\\n            <p>Contact with nature challenges definition and control in field and laboratory experiments, and it is even more difficult to assess in free-living populations. Studies at population level typically assess exposure in one of three ways: assessments of exposure by how much nature there is in, or close to, the participants\\' area of residence; survey questions about how much time, and/or how often, people visit natural environments; and objective measures of contact via GPS (global positioning systems) technology. Each method has problems; that people live near natural spaces, report visiting them, or position themselves spatially within them does not mean that individuals actually have had contact with nature in a way that affects their health. None of these measures includes visual contact with nature from, for example, windows at home or in the workplace, which may also have beneficial effects (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B66\" data-original-title=\"\" title=\"\">66</a></span>). Furthermore, these measures typically miss fine details of exposure that may be important, such as the timing of exposure (e.g., for many environmental exposures, specific windows of vulnerability exist across the life span), the seasonality of exposure (e.g., the role of deciduous trees being in leaf), the quality of the nature (e.g., area in mature trees versus immature trees versus shrubs versus lawn), and the duration of exposure.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Measuring Outcomes</span>\\n\\n            <p>The other end of the equation between natural environment and health is the assessment of health itself. Plausible health impacts are varied and multiple, positive and negative, psychological and physiological, short term and/or long term. This plurality means many different health measures can be used, which, in turn, makes it difficult to achieve a coherent body of research. There is a particular challenge in bridging what we know about effects of contact with nature from small-scale, shorter-term experimental studies and what we might expect to observe as effects in the real world at the population level. For example, it is difficult to determine what the fall in blood pressure on viewing nature, established in experimental studies, might mean for rates of heart disease among regular visitors to national parks. There is no simple solution to this challenge and no one clearly superior set of instruments or measurements that are suited to use in all settings and studies.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Understanding Mechanisms</span>\\n\\n            <p>Understanding how any relationship between nature and health happens can aid interventions that promote possible benefits. It is also vital for specifying who might benefit most and least from the relationship. The challenge is that, as we have noted, the mechanisms by which nature might affect health are multiple and synergistic. They likely vary in significance within a single contact with nature, between contacts, across the life course, between population subgroups, between environment types and across cultures. Understandings of mechanisms being developed in the relatively controlled conditions of experiments should eventually help epidemiologists to form better hypotheses about the variation in associations they could expect at a population level.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Demonstrating Causality at a Population Level</span>\\n\\n            <p>Positive, short-term effects of contact with nature on affect, cognition, and physiology have been reasonably well established in laboratory and field experiments. However, cross-sectional designs still dominate studies of long-term health outcomes measured in populations. The vulnerability of these designs to confounding and reverse causality is a particular problem. The likelihood of contact with nature is strongly patterned by socioeconomic, ethnic, age, and cultural characteristics, which are, themselves, linked to health. Richardson et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108\" data-original-title=\"\" title=\"\">108</a></span>) provide a fine example of the potential for confounding factors to obscure relationships between green space and health at a population level.</p>\\n\\n            <p>Both experimental and longitudinal observational designs are potential routes to better evidence for a causal relationship among free-living populations. For studies of nature and health, however, both types of study impose specific challenges. Experimental studies at a population level are hard to perform. Manipulating environments or people is difficult and expensive. Scientists often must rely on public agencies or authorities to fund and deliver environmental changes, such as the creation of a new park or trail. It can also be difficult to establish and maintain control sites or populations, and opportunities to randomize the receipt of environmental interventions to different communities are rare. Useful results have emerged from quasi-experimental and before-after studies that capture some of the attributes of true experiments (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14\" data-original-title=\"\" title=\"\">14</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75\" data-original-title=\"\" title=\"\">75</a></span>). The timescale for effects is also often a constraint. Funding to follow-up intervention studies is rarely longer than 3–5 years, but effects at a population level (perhaps even intergenerational effects) may take longer to establish.</p>\\n\\n            <p>Research on nature and health has been undertaken within different scientific paradigms. Attitudes toward the level of proof for an association, indeed attitudes toward the very idea of “proof,” vary between paradigms and are contested within them. Biomedical research, for example, often places great emphasis on low <span class=\"jp-italic\">p</span>-value thresholds for acceptance of an association. Frumkin (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B43\" data-original-title=\"\" title=\"\">43</a></span>) recently suggested, however, that the application of stringent <span class=\"jp-italic\">p</span>-value thresholds needs careful and explicit reconsideration in studies of nature and health. Moving from partial evidence to evidence-based recommendations regarding nature contact is a thorny problem.</p>\\n\\n            <p>For their part, existing panel or cohort studies that have good measures of health and well-being rarely also carry detailed information on contact with natural environments because this topic is relatively new to public health and epidemiology. Moreover, data sets that can also capture the change in or development of natural environments over time are rare.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Effect Size</span>\\n\\n            <p>Evidence suggests that contact with nature has a small effect on health and well-being in comparison to structural characteristics such as income, employment, or education, and behavioral characteristics such as smoking. The signal-to-noise ratio in population-level studies is often small, and these studies need to be well designed and of sufficient power to identify any benefits. This does not mean that such studies are not worth doing, however; a small beneficial effect on a large number of people is a large contribution to population health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B111\" data-original-title=\"\" title=\"\">111</a></span>).</p>\\n\\n         </div>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"prioritiesforfurtherresearch-1\" id=\"prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Throughout this review we have identified issues that warrant further research, and in the previous section we have identified methodological challenges that must be met. Here, we try to highlight some specific priorities for the field.</p>\\n\\n         <p>First, we see a need to seek, create, and take opportunities for population-level experimental studies when they arise, within an understanding of their limits. Doing so will assist in demonstrating the degree to which nature-health relations have meaning for population health. We should also work to incorporate questions about contact with nature in ongoing longitudinal studies and ensure that high-quality data on change in type, quality, and availability of nature are maintained into the future and created retrospectively for the past. These additions would permit studies consistent with both cohort and life-course perspectives on relationships between nature and health.</p>\\n\\n         <p>Second, research on which types of nature are relatively effective for particular outcomes, and which qualities of those types are highly relevant, may be more fruitful when guided by theoretical ideas about why a particular type or quality of that type is likely to contribute to a particular pathway to health. Natural elements that are effective in improving air quality are not necessarily the same as those best suited to improving social cohesion in a neighborhood or to promoting psychological restoration.</p>\\n\\n         <p>Third, with specific regard to the stress pathway, much work remains to be done to rigorously assess theoretical claims regarding the components of experience that sustain attention restoration and stress recovery. To what extent, for example, are beneficial effects dependent on gaining psychological distance from stressful demands versus engaging with positive aspects of the nature encountered? This work will be aided by, among other things, further development of measures of perceived restorative quality in environments, and experimentation that more directly addresses the interplay of stress recovery, attention restoration, and other possible processes through which adaptive resources become renewed (cf. <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n         <p>Fourth, if we acknowledge the competing priorities for funding and investment in health and health care, some research on nature and health might gain from a health economics perspective. If contact with nature is cost-effective as a means to protect and improve population health, it should be resourced and prioritized in preference to other approaches. Arguably, doing so requires knowledge not only about the economic significance of the health benefits generated, but also about the “doses” of nature needed to generate those benefits at the lowest possible cost. Discussions of dose, however, can entail a variety of problems, such as trivialization of contact with nature through neglect of long-term consequences of particularly powerful forms of contact (e.g., life-changing wilderness experiences). The dose metaphor therefore must be handled with care (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B137\" data-original-title=\"\" title=\"\">137</a></span>). As with other health-related issues, economic analyses must extend beyond health impacts to account for other benefits. For instance, an urban park may offer not only health benefits, but also benefits such as stormwater management and enhanced property values.</p>\\n\\n         <p>Finally, variety between population subgroups in access to, use of, and responses to nature remains persistently underexplored. Spatial, social, economic, racial, cultural, and demographic differences in relationships between nature and health seem highly probable. It may be that relationships between nature and health are implicated in exacerbating or mitigating health inequalities between subgroups, for example. This potential should be thoroughly explored.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"concludingcomments-1\" id=\"concludingcomments-1\">CONCLUDING COMMENTS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>We have provided for a general public health audience an overview of research on how contact with nature relates to health in urbanized societies. We have not covered this body of work comprehensively, but instead have focused on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations, such as the availability of urban parks, the amount of green space in and near residential areas, and the preservation of peri-urban natural areas. Given our public health orientation, we have focused on the conditions of everyday life for the greatest part of the populations of interest. We consequently have hardly touched on the extensive literatures on wilderness experience (for reviews, see 72, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B139\" data-original-title=\"\" title=\"\">139</a></span>) and contact with nature in the treatment and management of disability and illnesses such as depression (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B47\" data-original-title=\"\" title=\"\">47</a></span>) and breast cancer (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B21\" data-original-title=\"\" title=\"\">21</a></span>; see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2\" data-original-title=\"\" title=\"\">2</a></span> for a review).</p>\\n\\n         <p>Despite such significant omissions, we trust readers will take away an appreciation not only of the diversity and complexity in forms of nature contact and potential benefits thereof, but also of the many challenges faced in characterizing those contacts and benefits. Taken together, the research reviewed does indicate that contact with nature can promote health. The evidence for some benefits, such as short-term restorative effects, is already quite strong. That said, nature contact should not be assumed always and automatically to be good for health; we have more to learn about for whom, when, how, and in which contexts it offers benefits.</p>\\n\\n         <p>Much also remains to be done to help those responsible for environmental policy, design, and management to make realistic assessments of what nature can and cannot do in their domain of activity. Part of this task involves explaining how health benefits might coincide (versus conflict with) other benefits, such as better stormwater management, species preservation, and carbon sequestration. If a particular form of nature contact shows small health benefits, interventions to promote it may still justify public investment if the health benefits combine with other benefits.</p>\\n\\n         <p>In closing, we recognize that many people speak of human-nature relations in moral/ethical and spiritual/religious terms with a view toward preservation of the natural environment. We respect such views. Our observations here regarding human health values should not be understood as the only or even the main bases for arguments regarding protection of habitats, species, and ecosystem integrity.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n   \\n</div>\\n\\n<div id=\"article-level-0-back\">\\n<div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"disclosurestatement-1\" id=\"disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><p>H. Frumkin is a board member of the US Green Building Council and of the Children and Nature Network. R. Mitchell supervises a doctoral student funded by the UK Forestry Commission and has received research funding from the Forestry Commission in the recent past. The other authors are not aware of any affiliations, memberships, funding, or financial holdings that might be perceived as affecting the objectivity of this review.</p>\\n<div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"acknowledgments-1\" id=\"acknowledgments-1\">ACKNOWLEDGMENTS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><div>\\n            \\n<span class=\"tl-lowest-section\">\\n               <span class=\"jp-small\">acknowledgments</span>\\n            </span>\\n\\n            <p>R. Mitchell was funded under a European Research Council grant (ERC-2010-StG Grant 263501).</p>\\n\\n         </div>\\n<div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"literaturecited-1\" id=\"literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><span class=\"references\"><ol id=\"articlereference\" class=\"articlereference-vancouver\">\\n<li class=\"refbody\" id=\"B1\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Akbari</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Kurn</span> <span class=\"reference-given-names\">DM</span>, <span class=\"reference-surname\">Bretz</span> <span class=\"reference-given-names\">SE</span>, <span class=\"reference-surname\">Hanford</span> <span class=\"reference-given-names\">JW</span>. <span class=\"citation-label\">1.\\u2002</span> <span class=\"reference-year\">1997</span>. <span class=\"reference-article-title\"> Peak power and cooling energy savings of shade trees. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Energy Build.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">139–</span><span class=\"reference-lpage\">48</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&amp;author=H+Akbari&amp;author=DM+Kurn&amp;author=SE+Bretz&amp;author=JW+Hanford&amp;journal=Energy+Build.&amp;volume=25&amp;pages=139-48&amp;publication_year=1997&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B2\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Annerstedt</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Währborg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">2.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Nature-assisted therapy: systematic review of controlled and observational studies. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">39</span>:<span class=\"reference-fpage\">371–</span><span class=\"reference-lpage\">88</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&amp;author=M+Annerstedt&amp;author=P+W%C3%A4hrborg&amp;journal=Scand.+J.+Public+Health&amp;volume=39&amp;pages=371-88&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B3\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">3.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3947–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&amp;author=J+Barton&amp;author=J+Pretty&amp;journal=Environ.+Sci.+Technol.&amp;volume=44&amp;pages=3947-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B4\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Baum</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Ziersch</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Zhang</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Osborne</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">4.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">925–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&amp;author=FE+Baum&amp;author=AM+Ziersch&amp;author=G+Zhang&amp;author=K+Osborne&amp;journal=Health+Place&amp;volume=15&amp;pages=925-34&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B5\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bauman</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Reis</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">JC</span>, <span class=\"reference-surname\">Loos</span> <span class=\"reference-given-names\">RJ</span>, <span class=\"reference-surname\">Martin</span> <span class=\"reference-given-names\">BW</span>. <span class=\"citation-label\">5.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Correlates of physical activity: Why are some people physically active and others not?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">380</span>:<span class=\"reference-fpage\">258–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&amp;author=AE+Bauman&amp;author=RS+Reis&amp;author=JF+Sallis&amp;author=JC+Wells&amp;author=RJ+Loos&amp;author=BW+Martin&amp;journal=Lancet&amp;volume=380&amp;pages=258-71&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B6\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beck</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Meyers</span> <span class=\"reference-given-names\">NM</span>. <span class=\"citation-label\">6.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Health enhancement and companion animal ownership. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">247–</span><span class=\"reference-lpage\">57</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&amp;author=AM+Beck&amp;author=NM+Meyers&amp;journal=Annu.+Rev.+Public+Health&amp;volume=17&amp;pages=247-57&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B7\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beckett</span> <span class=\"reference-given-names\">KP</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">PH</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">7.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> The capture of particulate pollution by trees at five contrasting urban sites. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Arboric. J.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">209–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&amp;author=KP+Beckett&amp;author=PH+Freer-Smith&amp;author=G+Taylor&amp;journal=Arboric.+J.&amp;volume=24&amp;pages=209-30&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B8\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bedimo-Rung</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Mowen</span> <span class=\"reference-given-names\">AJ</span>, <span class=\"reference-surname\">Cohen</span> <span class=\"reference-given-names\">DA</span>. <span class=\"citation-label\">8.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The significance of parks to physical activity and public health: a conceptual model. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">159–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&amp;author=AL+Bedimo-Rung&amp;author=AJ+Mowen&amp;author=DA+Cohen&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=159-68&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B9\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Benjamin</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Winer</span> <span class=\"reference-given-names\">AM</span>. <span class=\"citation-label\">9.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Estimating the ozone-forming potential of urban trees and shrubs. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">53–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&amp;author=MT+Benjamin&amp;author=AM+Winer&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=53-68&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B10\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bize</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Johnson</span> <span class=\"reference-given-names\">JA</span>, <span class=\"reference-surname\">Plotnikoff</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">10.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Physical activity level and health-related quality of life in the general adult population: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Prev. Med.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">15</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&amp;author=R+Bize&amp;author=JA+Johnson&amp;author=RC+Plotnikoff&amp;journal=Prev.+Med.&amp;volume=45&amp;pages=401-15&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B11\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">LM</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">11.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> A systematic review of evidence for the added benefits to health of exposure to natural environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">10</span>:<span class=\"reference-fpage\">456</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&amp;author=DE+Bowler&amp;author=LM+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=BMC+Public+Health&amp;volume=10&amp;pages=456&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B12\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">12.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Urban greening to cool towns and cities: a systematic review of the empirical evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">97</span>:<span class=\"reference-fpage\">147–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&amp;author=DE+Bowler&amp;author=L+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=Landsc.+Urban+Plann.&amp;volume=97&amp;pages=147-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B13\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brack</span> <span class=\"reference-given-names\">CL</span>. <span class=\"citation-label\">13.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollution mitigation and carbon sequestration by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">116</span>:<span class=\"reference-fpage\">S195–</span><span class=\"reference-lpage\">200</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&amp;author=CL+Brack&amp;journal=Environ.+Pollut.&amp;volume=116&amp;pages=S195-200&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B14\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Branas</span> <span class=\"reference-given-names\">CC</span>, <span class=\"reference-surname\">Cheney</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">MacDonald</span> <span class=\"reference-given-names\">JM</span>, <span class=\"reference-surname\">Tam</span> <span class=\"reference-given-names\">VW</span>, <span class=\"reference-surname\">Jackson</span> <span class=\"reference-given-names\">TD</span>, <span class=\"reference-surname\">Ten Have</span> <span class=\"reference-given-names\">TR</span>. <span class=\"citation-label\">14.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> A difference-in-differences analysis of health, safety, and greening vacant urban space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Epidemiol.</span></span> <span class=\"reference-volume\">174</span>:<span class=\"reference-fpage\">1296–</span><span class=\"reference-lpage\">306</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&amp;author=CC+Branas&amp;author=RA+Cheney&amp;author=JM+MacDonald&amp;author=VW+Tam&amp;author=TD+Jackson&amp;author=TR+Ten+Have&amp;journal=Am.+J.+Epidemiol.&amp;volume=174&amp;pages=1296-306&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B15\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bratman</span> <span class=\"reference-given-names\">GN</span>, <span class=\"reference-surname\">Hamilton</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Daily</span> <span class=\"reference-given-names\">GC</span>. <span class=\"citation-label\">15.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The impacts of nature experience on human cognitive function and mental health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. N.Y. Acad. Sci.</span></span> <span class=\"reference-volume\">1249</span>:<span class=\"reference-fpage\">118–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&amp;author=GN+Bratman&amp;author=JP+Hamilton&amp;author=GC+Daily&amp;journal=Ann.+N.Y.+Acad.+Sci.&amp;volume=1249&amp;pages=118-36&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B16\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bringslimark</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>. <span class=\"citation-label\">16.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> The psychological benefits of indoor plants: a critical review of the experimental literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">422–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&amp;author=T+Bringslimark&amp;author=T+Hartig&amp;author=GG+Patil&amp;journal=J.+Environ.+Psychol.&amp;volume=29&amp;pages=422-33&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B17\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Broekhuizen</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">SI</span>, <span class=\"reference-surname\">Pierik</span> <span class=\"reference-given-names\">FH</span>. <span class=\"citation-label\">17.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Aging in a Green Living Environment: A Systematic Review of the Literature.</span></span> TNO rep. R10154 Leiden: TNO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&amp;author=K+Broekhuizen&amp;author=SI+de+Vries&amp;author=FH+Pierik&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B18\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brooks</span> <span class=\"reference-given-names\">GD</span>, <span class=\"reference-surname\">Bush</span> <span class=\"reference-given-names\">RK</span>. <span class=\"citation-label\">18.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Allergens and other factors important in atopic disease. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Patterson\\'s Allergic Diseases</span></span> LC Grammer, PA Greenberger <span class=\"reference-fpage\">73–</span><span class=\"reference-lpage\">103</span> Philadelphia: Lippincott, Williams &amp; Wilkins, 7th ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&amp;author=GD+Brooks&amp;author=RK+Bush&amp;journal=Patterson%27s+Allergic+Diseases&amp;pages=73-103&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B19\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cariñanos</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Casares-Porcel</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">19.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">101</span>:<span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">14</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&amp;author=P+Cari%C3%B1anos&amp;author=M+Casares-Porcel&amp;journal=Landsc.+Urban+Plann.&amp;volume=101&amp;pages=205-14&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B20\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Chameides</span> <span class=\"reference-given-names\">WL</span>, <span class=\"reference-surname\">Lindsay</span> <span class=\"reference-given-names\">RW</span>, <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Kiang</span> <span class=\"reference-given-names\">CS</span>. <span class=\"citation-label\">20.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-article-title\"> The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">241</span>:<span class=\"reference-fpage\">1473–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&amp;author=WL+Chameides&amp;author=RW+Lindsay&amp;author=J+Richardson&amp;author=CS+Kiang&amp;journal=Science&amp;volume=241&amp;pages=1473-75&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B21\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cimprich</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">21.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Development of an intervention to restore attention in cancer patients. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Cancer Nurs.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">83–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&amp;author=B+Cimprich&amp;journal=Cancer+Nurs.&amp;volume=16&amp;pages=83-92&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B22\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Colfer</span> <span class=\"reference-given-names\">CJP</span>, <span class=\"reference-surname\">Sheil</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Kishi</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">22.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests and Human Health: Assessing the Evidence</span></span> Bogor, Indones.: Cent. Int. For. Res <a target=\"xrefwindow\" href=\"http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf\"><span class=\"reference-bold\">http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&amp;author=CJP+Colfer&amp;author=D+Sheil&amp;author=M+Kishi&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B23\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Day</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">23.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Plan Educ. Res.</span></span> <span class=\"reference-volume\">19</span>:<span class=\"reference-fpage\">265–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&amp;author=LL+Day&amp;journal=J.+Plan+Educ.+Res.&amp;volume=19&amp;pages=265-75&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B24\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Claßen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Eigenheer-Hug</span> <span class=\"reference-given-names\">S-M</span>, <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">24.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Contributions of natural environments to physical activity. </span> See Ref. 98 <span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&amp;author=S+de+Vries&amp;author=T+Cla%C3%9Fen&amp;author=S-M+Eigenheer-Hug&amp;author=K+Korpela&amp;author=J+Maas&amp;pages=205-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B25\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">25.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Streetscape greenery and health: stress, social cohesion and physical activity as mediators. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">94</span>:<span class=\"reference-fpage\">26–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Soc.+Sci.+Med.&amp;volume=94&amp;pages=26-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B26\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">26.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">1717–</span><span class=\"reference-lpage\">31</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&amp;author=S+de+Vries&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Environ.+Plann.+A&amp;volume=35&amp;pages=1717-31&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B27\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">DellaValle</span> <span class=\"reference-given-names\">CT</span>, <span class=\"reference-surname\">Triche</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Leaderer</span> <span class=\"reference-given-names\">BP</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">ML</span>. <span class=\"citation-label\">27.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Epidemiology</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">55–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&amp;author=CT+DellaValle&amp;author=EW+Triche&amp;author=BP+Leaderer&amp;author=ML+Bell&amp;journal=Epidemiology&amp;volume=23&amp;pages=55-63&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B28\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Den Hertog</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Bronkhorst</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Moerman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Van Wilgenburg</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">28.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit</span> [<span class=\"reference-italic\">The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity</span>].</span> Amsterdam: EMGO Inst.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&amp;author=F+Den+Hertog&amp;author=M+Bronkhorst&amp;author=M+Moerman&amp;author=R+Van+Wilgenburg&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B29\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Kerr</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Lee</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Rosenberg</span> <span class=\"reference-given-names\">DE</span>. <span class=\"citation-label\">29.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Neighborhood environment and physical activity among youth: a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">442–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&amp;author=D+Ding&amp;author=JF+Sallis&amp;author=J+Kerr&amp;author=S+Lee&amp;author=DE+Rosenberg&amp;journal=Am.+J.+Prev.+Med.&amp;volume=41&amp;pages=442-55&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B30\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Domm</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Drew</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Greene</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Ripley</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Tordesillas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">30.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Recommended urban forest mixtures to optimize selected environmental benefits. </span> <span class=\"reference-source\"><span class=\"reference-italic\">EnviroNews: Int. Soc. Environ. Bot.</span></span> <span class=\"reference-volume\">14</span>:<span class=\"reference-fpage\">7–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&amp;author=J+Domm&amp;author=R+Drew&amp;author=A+Greene&amp;author=E+Ripley&amp;author=R+Smardon&amp;author=J+Tordesillas&amp;journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&amp;volume=14&amp;pages=7-10&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B31\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Donovan</span> <span class=\"reference-given-names\">GH</span>, <span class=\"reference-surname\">Prestemon</span> <span class=\"reference-given-names\">JP</span>. <span class=\"citation-label\">31.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The effect of trees on crime in Portland, Oregon. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&amp;author=GH+Donovan&amp;author=JP+Prestemon&amp;journal=Environ.+Behav.&amp;volume=44&amp;pages=3-30&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B32\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Eid</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Overman</span> <span class=\"reference-given-names\">HG</span>, <span class=\"reference-surname\">Puga</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Turner</span> <span class=\"reference-given-names\">MA</span>. <span class=\"citation-label\">32.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Fat city: questioning the relationship between urban sprawl and obesity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Urban Econ.</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">385–</span><span class=\"reference-lpage\">404</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&amp;author=J+Eid&amp;author=HG+Overman&amp;author=D+Puga&amp;author=MA+Turner&amp;journal=J.+Urban+Econ.&amp;volume=63&amp;pages=385-404&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B33\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Engel</span> <span class=\"reference-given-names\">GL</span>. <span class=\"citation-label\">33.\\u2002</span> <span class=\"reference-year\">1977</span>. <span class=\"reference-article-title\"> The need for a new medical model: a challenge for biomedicine. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">196</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&amp;author=GL+Engel&amp;journal=Science&amp;volume=196&amp;pages=129-36&amp;publication_year=1977&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B34\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Escobedo</span> <span class=\"reference-given-names\">FJ</span>, <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>. <span class=\"citation-label\">34.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Spatial heterogeneity and air pollution removal by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">90</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&amp;author=FJ+Escobedo&amp;author=DJ+Nowak&amp;journal=Landsc.+Urban+Plann.&amp;volume=90&amp;pages=102-10&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B35\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ferdinand</span> <span class=\"reference-given-names\">AO</span>, <span class=\"reference-surname\">Sen</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Rahurkar</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Engler</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Menachemi</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">35.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The relationship between built environments and physical activity: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">102</span>:<span class=\"reference-fpage\">e7–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&amp;author=AO+Ferdinand&amp;author=B+Sen&amp;author=S+Rahurkar&amp;author=S+Engler&amp;author=N+Menachemi&amp;journal=Am.+J.+Public+Health&amp;volume=102&amp;pages=e7-13&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B36\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Forrest</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kearns</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">36.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Social cohesion, social capital and the neighbourhood. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban Stud.</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">2125–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&amp;author=R+Forrest&amp;author=A+Kearns&amp;journal=Urban+Stud.&amp;volume=38&amp;pages=2125-43&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B37\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fowler</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">37.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollutant deposition and uptake by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Air Pollution and Plant Life</span></span> JNB Bell, M Treshow <span class=\"reference-fpage\">43–</span><span class=\"reference-lpage\">67</span> New York: Wiley, 2nd ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&amp;author=D+Fowler&amp;journal=Air+Pollution+and+Plant+Life&amp;pages=43-67&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B38\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">38.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Creating sense of community: the role of public space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&amp;author=J+Francis&amp;author=B+Giles-Corti&amp;author=L+Wood&amp;author=M+Knuiman&amp;journal=J.+Environ.+Psychol.&amp;volume=32&amp;pages=401-9&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B39\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">LJ</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">39.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">74</span>:<span class=\"reference-fpage\">1570–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&amp;author=J+Francis&amp;author=LJ+Wood&amp;author=M+Knuiman&amp;author=B+Giles-Corti&amp;journal=Soc.+Sci.+Med.&amp;volume=74&amp;pages=1570-77&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B40\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fraser</span> <span class=\"reference-given-names\">SDS</span>, <span class=\"reference-surname\">Lock</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">40.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Cycling for transport and public health: a systematic review of the effect of the environment on cycling. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eur. J. Public Health</span></span> <span class=\"reference-volume\">21</span>:<span class=\"reference-fpage\">738–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&amp;author=SDS+Fraser&amp;author=K+Lock&amp;journal=Eur.+J.+Public+Health&amp;volume=21&amp;pages=738-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B41\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frost</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Goins</span> <span class=\"reference-given-names\">RT</span>, <span class=\"reference-surname\">Hunter</span> <span class=\"reference-given-names\">RH</span>, <span class=\"reference-surname\">Hooker</span> <span class=\"reference-given-names\">SP</span>, <span class=\"reference-surname\">Bryant</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">41.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Effects of the built environment on physical activity of adults living in rural settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Health Promot.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">267–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&amp;author=SS+Frost&amp;author=RT+Goins&amp;author=RH+Hunter&amp;author=SP+Hooker&amp;author=LL+Bryant&amp;journal=Am.+J.+Health+Promot.&amp;volume=24&amp;pages=267-83&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B42\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">42.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Beyond toxicity: human health and the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">234–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=20&amp;pages=234-40&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B43\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">43.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The evidence of nature and the nature of evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">196–</span><span class=\"reference-lpage\">97</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=44&amp;pages=196-97&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B44\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Galea</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Vlahov</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">44.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Urban health: evidence, challenges, and directions. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">341–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&amp;author=S+Galea&amp;author=D+Vlahov&amp;journal=Annu.+Rev.+Public+Health&amp;volume=26&amp;pages=341-65&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B45\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gatersleben</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Andrews</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">45.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> When walking in nature is not restorative—the role of prospect and refuge. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">91–</span><span class=\"reference-lpage\">101</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&amp;author=B+Gatersleben&amp;author=M+Andrews&amp;journal=Health+Place&amp;volume=20&amp;pages=91-101&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B46\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Broomhall</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Collins</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Douglas</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">46.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Increasing walking: How important is distance to, attractiveness, and size of public open space?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&amp;author=B+Giles-Corti&amp;author=MH+Broomhall&amp;author=M+Knuiman&amp;author=C+Collins&amp;author=K+Douglas&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=169-76&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B47\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gonzalez</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>, <span class=\"reference-surname\">Martinsen</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Kirkevold</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">47.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Therapeutic horticulture in clinical depression: a prospective study of active components. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Adv. Nurs.</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">2002–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&amp;author=MT+Gonzalez&amp;author=T+Hartig&amp;author=GG+Patil&amp;author=EW+Martinsen&amp;author=M+Kirkevold&amp;journal=J.+Adv.+Nurs.&amp;volume=66&amp;pages=2002-13&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B48\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">48.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Nature experience in transactional perspective. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&amp;author=T+Hartig&amp;journal=Landsc.+Urban+Plann.&amp;volume=25&amp;pages=17-36&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B49\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>, <span class=\"reference-surname\">Jamner</span> <span class=\"reference-given-names\">LD</span>, <span class=\"reference-surname\">Davis</span> <span class=\"reference-given-names\">DS</span>, <span class=\"reference-surname\">Gärling</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">49.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Tracking restoration in natural and urban field settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">109–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&amp;author=T+Hartig&amp;author=GW+Evans&amp;author=LD+Jamner&amp;author=DS+Davis&amp;author=T+G%C3%A4rling&amp;journal=J.+Environ.+Psychol.&amp;volume=23&amp;pages=109-23&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B50\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Fransson</span> <span class=\"reference-given-names\">U</span>. <span class=\"citation-label\">50.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">82–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&amp;author=T+Hartig&amp;author=U+Fransson&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=82-96&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B51\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Kylin</span> <span class=\"reference-given-names\">C</span>. <span class=\"citation-label\">51.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Residence in the social ecology of stress and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Soc. Iss.</span></span> <span class=\"reference-volume\">59</span>:<span class=\"reference-fpage\">611–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&amp;author=T+Hartig&amp;author=G+Johansson&amp;author=C+Kylin&amp;journal=J.+Soc.+Iss.&amp;volume=59&amp;pages=611-36&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B52\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Mang</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">52.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Restorative effects of natural environment experiences. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&amp;author=T+Hartig&amp;author=M+Mang&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=23&amp;pages=3-26&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B53\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Hagerhall</span> <span class=\"reference-given-names\">CM</span>, <span class=\"reference-surname\">Tomalak</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">53.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: psychological, social and cultural processes. </span> See Ref. 98 <span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B54\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">54.\\u2002</span><span class=\"reference-collab\">Health Counc. Neth</span> <span class=\"reference-year\">2004</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being.</span></span> The Hague: Health Counc. Neth., RMNO <a target=\"xrefwindow\" href=\"http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf\"><span class=\"reference-bold\">http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&amp;publication_year=2004&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B55\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Heinen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">van Wee</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Maat</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">55.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Commuting by bicycle: an overview of the literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Transp. Rev.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&amp;author=E+Heinen&amp;author=B+van+Wee&amp;author=K+Maat&amp;journal=Transp.+Rev.&amp;volume=30&amp;pages=59-96&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B56\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hillsdon</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Panter</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Foster</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">56.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The relationship between access and quality of urban green space with population physical activity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">120</span>:<span class=\"reference-fpage\">1127–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&amp;author=M+Hillsdon&amp;author=J+Panter&amp;author=C+Foster&amp;author=A+Jones&amp;journal=Public+Health&amp;volume=120&amp;pages=1127-32&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B57\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Holt-Lunstad</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">TB</span>, <span class=\"reference-surname\">Layton</span> <span class=\"reference-given-names\">JB</span>. <span class=\"citation-label\">57.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social relationships and mortality risk: a meta-analytic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">PLoS Med.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">e1000316</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&amp;author=J+Holt-Lunstad&amp;author=TB+Smith&amp;author=JB+Layton&amp;journal=PLoS+Med.&amp;volume=7&amp;pages=e1000316&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B58\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Home</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hunziker</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">58.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Psychosocial outcomes as motivations for visiting nearby urban green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">34</span>:<span class=\"reference-fpage\">350–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&amp;author=R+Home&amp;author=M+Hunziker&amp;author=N+Bauer&amp;journal=Leis.+Sci.&amp;volume=34&amp;pages=350-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B59\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Islam</span> <span class=\"reference-given-names\">MN</span>, <span class=\"reference-surname\">Rahman</span> <span class=\"reference-given-names\">K-S</span>, <span class=\"reference-surname\">Bahar</span> <span class=\"reference-given-names\">MM</span>, <span class=\"reference-surname\">Habib</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Ando</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hattori</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">59.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Pollution attenuation by roadside greenbelt in and around urban areas. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">460–</span><span class=\"reference-lpage\">64</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&amp;author=MN+Islam&amp;author=K-S+Rahman&amp;author=MM+Bahar&amp;author=MA+Habib&amp;author=K+Ando&amp;author=N+Hattori&amp;journal=Urban+For.+Urban+Green.&amp;volume=11&amp;pages=460-64&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B60\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jahncke</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Hygge</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Halin</span> <span class=\"reference-given-names\">N</span>, <span class=\"reference-surname\">Green</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Dimberg</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">60.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Open-plan office noise: cognitive performance and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">31</span>:<span class=\"reference-fpage\">373–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&amp;author=H+Jahncke&amp;author=S+Hygge&amp;author=N+Halin&amp;author=AM+Green&amp;author=K+Dimberg&amp;journal=J.+Environ.+Psychol.&amp;volume=31&amp;pages=373-82&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B61\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Janssen</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">LeBlanc</span> <span class=\"reference-given-names\">AG</span>. <span class=\"citation-label\">61.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Behav. Nutr. Phys. Act.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&amp;author=I+Janssen&amp;author=AG+LeBlanc&amp;journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&amp;volume=7&amp;pages=40&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B62\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Fors</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Lindgren</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Wiström</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">62.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Perceived personal safety in relation to urban woodland vegetation—a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&amp;author=M+Jansson&amp;author=H+Fors&amp;author=T+Lindgren&amp;author=B+Wistr%C3%B6m&amp;journal=Urban+For.+Urban+Green.&amp;volume=12&amp;pages=127-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B63\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jim</span> <span class=\"reference-given-names\">CY</span>, <span class=\"reference-surname\">Chen</span> <span class=\"reference-given-names\">WY</span>. <span class=\"citation-label\">63.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Manag.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">665–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&amp;author=CY+Jim&amp;author=WY+Chen&amp;journal=J.+Environ.+Manag.&amp;volume=88&amp;pages=665-76&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B64\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">64.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Psychological benefits of walking: moderation by company and outdoor environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Appl. Psychol. Health Well-Being</span></span> <span class=\"reference-volume\">3</span>:<span class=\"reference-fpage\">261–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&amp;author=M+Johansson&amp;author=T+Hartig&amp;author=H+Staats&amp;journal=Appl.+Psychol.+Health+Well-Being&amp;volume=3&amp;pages=261-80&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B65\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaczynski</span> <span class=\"reference-given-names\">AT</span>, <span class=\"reference-surname\">Henderson</span> <span class=\"reference-given-names\">KA</span>. <span class=\"citation-label\">65.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Environmental correlates of physical activity: a review of evidence about parks and recreation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">315–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&amp;author=AT+Kaczynski&amp;author=KA+Henderson&amp;journal=Leis.+Sci.&amp;volume=29&amp;pages=315-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B66\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">66.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> The role of nature in the context of the workplace. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">193–</span><span class=\"reference-lpage\">201</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&amp;author=R+Kaplan&amp;journal=Landsc.+Urban+Plann.&amp;volume=26&amp;pages=193-201&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B67\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">67.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-source\"><span class=\"reference-italic\">The Experience of Nature: A Psychological Perspective</span></span> New York: Cambridge Univ. Press\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&amp;author=R+Kaplan&amp;author=S+Kaplan&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B68\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">68.\\u2002</span> <span class=\"reference-year\">1995</span>. <span class=\"reference-article-title\"> The restorative benefits of nature: toward an integrative framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&amp;author=S+Kaplan&amp;journal=J.+Environ.+Psychol.&amp;volume=15&amp;pages=169-82&amp;publication_year=1995&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B69\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">69.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Meditation, restoration, and the management of mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">480–</span><span class=\"reference-lpage\">506</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&amp;author=S+Kaplan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=480-506&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B70\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Karl</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Harley</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Emmons</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Thornton</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Guenther</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">70.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">330</span>:<span class=\"reference-fpage\">816–</span><span class=\"reference-lpage\">19</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&amp;author=T+Karl&amp;author=P+Harley&amp;author=L+Emmons&amp;author=B+Thornton&amp;author=A+Guenther&amp;journal=Science&amp;volume=330&amp;pages=816-19&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B71\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaźmierczak</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">71.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The contribution of local parks to neighbourhood social ties. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">109</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">44</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&amp;author=A+Ka%C5%BAmierczak&amp;journal=Landsc.+Urban+Plann.&amp;volume=109&amp;pages=31-44&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B72\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Knopf</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">72.\\u2002</span> <span class=\"reference-year\">1987</span>. <span class=\"reference-article-title\"> Human behavior, cognition, and affect in the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Handbook of Environmental Psychology</span></span> D Stokols, I Altman <span class=\"reference-fpage\">783–</span><span class=\"reference-lpage\">825</span> New York: Wiley\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&amp;author=RC+Knopf&amp;journal=Handbook+of+Environmental+Psychology&amp;pages=783-825&amp;publication_year=1987&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B73\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">73.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Restorative qualities of favorite places. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&amp;author=K+Korpela&amp;author=T+Hartig&amp;journal=J.+Environ.+Psychol.&amp;volume=16&amp;pages=221-33&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B74\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kroll</span> <span class=\"reference-given-names\">JH</span>, <span class=\"reference-surname\">Seinfeld</span> <span class=\"reference-given-names\">JH</span>. <span class=\"citation-label\">74.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">42</span>:<span class=\"reference-fpage\">3593–</span><span class=\"reference-lpage\">624</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&amp;author=JH+Kroll&amp;author=JH+Seinfeld&amp;journal=Atmos.+Environ.&amp;volume=42&amp;pages=3593-624&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B75\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">75.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Aggression and violence in the inner city: effects of environment via mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">543–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=543-71&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B76\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">76.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Environment and crime in the inner city: Does vegetation reduce crime?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">343–</span><span class=\"reference-lpage\">67</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=343-67&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B77\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>, <span class=\"reference-surname\">Coley</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Brunson</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">77.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Fertile ground for community: inner-city neighborhood common spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Community Psychol.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">823–</span><span class=\"reference-lpage\">51</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;author=RL+Coley&amp;author=L+Brunson&amp;journal=Am.+J.+Community+Psychol.&amp;volume=26&amp;pages=823-51&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B78\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">78.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Greenspace and obesity: a systematic review of the evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Obes. Rev.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">e183–</span><span class=\"reference-lpage\">89</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Obes.+Rev.&amp;volume=12&amp;pages=e183-89&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B79\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">79.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">118</span>:<span class=\"reference-fpage\">62–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Landsc.+Urban+Plann.&amp;volume=118&amp;pages=62-69&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B80\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lindheim</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Syme</span> <span class=\"reference-given-names\">SL</span>. <span class=\"citation-label\">80.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Environments, people, and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">335–</span><span class=\"reference-lpage\">59</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&amp;author=R+Lindheim&amp;author=SL+Syme&amp;journal=Annu.+Rev.+Public+Health&amp;volume=4&amp;pages=335-59&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B81\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Liu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Mu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Zhu</span> <span class=\"reference-given-names\">Y-G</span>, <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Arens</span> <span class=\"reference-given-names\">NC</span>. <span class=\"citation-label\">81.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Which ornamental plant species effectively remove benzene from indoor air?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">650–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&amp;author=Y-J+Liu&amp;author=Y-J+Mu&amp;author=Y-G+Zhu&amp;author=H+Ding&amp;author=NC+Arens&amp;journal=Atmos.+Environ.&amp;volume=41&amp;pages=650-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B82\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lloyd</span> <span class=\"reference-given-names\">GER</span>, <span class=\"reference-surname\">Chadwick</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mann</span> <span class=\"reference-given-names\">WN</span>. <span class=\"citation-label\">82.\\u2002</span> <span class=\"reference-year\">1978</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Hippocratic Writings</span></span> Harmondsworth: Penguin\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&amp;author=GER+Lloyd&amp;author=J+Chadwick&amp;author=WN+Mann&amp;publication_year=1978&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B83\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lovasi</span> <span class=\"reference-given-names\">GS</span>, <span class=\"reference-surname\">O\\'Neil-Dunne</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Lu</span> <span class=\"reference-given-names\">JW</span>, <span class=\"reference-surname\">Sheehan</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Perzanowski</span> <span class=\"reference-given-names\">MS</span>. <span class=\"citation-label\">83.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Perspect.</span></span> <span class=\"reference-volume\">121</span>:<span class=\"reference-fpage\">494–</span><span class=\"reference-lpage\">500</span> 00e1–6 \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&amp;author=GS+Lovasi&amp;author=JP+O%27Neil-Dunne&amp;author=JW+Lu&amp;author=D+Sheehan&amp;author=MS+Perzanowski&amp;journal=Environ.+Health+Perspect.&amp;volume=121&amp;pages=494-500&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B84\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">84.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Is green space in the living environment associated with people\\'s feelings of social safety?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">1763–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&amp;author=J+Maas&amp;author=P+Spreeuwenberg&amp;author=M+van+Winsum-Westra&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=PP+Groenewegen&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=1763-77&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B85\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SM</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">85.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Social contacts as a possible mechanism behind the relation between green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">586–</span><span class=\"reference-lpage\">95</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&amp;author=J+Maas&amp;author=SM+van+Dillen&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Health+Place&amp;volume=15&amp;pages=586-95&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B86\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Schellevis</span> <span class=\"reference-given-names\">FG</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">86.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Morbidity is related to a green living environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">967–</span><span class=\"reference-lpage\">73</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;author=FG+Schellevis&amp;author=PP+Groenewegen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=63&amp;pages=967-73&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B87\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">87.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Green space, urbanity, and health: How strong is the relation?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">60</span>:<span class=\"reference-fpage\">587–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=60&amp;pages=587-92&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B88\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">88.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">8</span>:<span class=\"reference-fpage\">206</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=P+Spreeuwenberg&amp;author=PP+Groenewegen&amp;journal=BMC+Public+Health&amp;volume=8&amp;pages=206&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B89\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maller</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Townsend</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">St Leger</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Henderson-Wilson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Pryor</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">89.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context</span></span> Melbourne, Aust.: Deakin Univ.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&amp;author=C+Maller&amp;author=M+Townsend&amp;author=L+St+Leger&amp;author=C+Henderson-Wilson&amp;author=A+Pryor&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B90\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCormack</span> <span class=\"reference-given-names\">GR</span>, <span class=\"reference-surname\">Rock</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Toohey</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Hignell</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">90.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">712–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&amp;author=GR+McCormack&amp;author=M+Rock&amp;author=AM+Toohey&amp;author=D+Hignell&amp;journal=Health+Place&amp;volume=16&amp;pages=712-26&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B91\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCurdy</span> <span class=\"reference-given-names\">LE</span>, <span class=\"reference-surname\">Winterbottom</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Mehta</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Roberts</span> <span class=\"reference-given-names\">JR</span>. <span class=\"citation-label\">91.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Using nature and outdoor activity to improve children\\'s health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Curr. Probl. Pediatr. Adolesc. Health Care</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&amp;author=LE+McCurdy&amp;author=KE+Winterbottom&amp;author=SS+Mehta&amp;author=JR+Roberts&amp;journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&amp;volume=40&amp;pages=102-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B92\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">92.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Is physical activity in natural environments better for mental health than physical activity in other environments?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">130–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=91&amp;pages=130-34&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B93\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">93.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Greenspace, urbanity and health: relationships in England. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">61</span>:<span class=\"reference-fpage\">681–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=61&amp;pages=681-83&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B94\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">94.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Effect of exposure to natural environment on health inequalities: an observational population study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">372</span>:<span class=\"reference-fpage\">1655–</span><span class=\"reference-lpage\">60</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=Lancet&amp;volume=372&amp;pages=1655-60&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B95\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitrione</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">95.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Therapeutic responses to natural environments: using gardens to improve health care. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Minn. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&amp;author=S+Mitrione&amp;journal=Minn.+Med.&amp;volume=91&amp;pages=31-34&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B96\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Muñoz</span> <span class=\"reference-given-names\">S-A</span>. <span class=\"citation-label\">96.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Children in the Outdoors: A Literature Review</span></span> Forres, Scotl.: Sustain. Dev. Res. Cent.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&amp;author=S-A+Mu%C3%B1oz&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B97\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nieminen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Martelin</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Koskinen</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Aro</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Alanen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hyyppä</span> <span class=\"reference-given-names\">MT</span>. <span class=\"citation-label\">97.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social capital as a determinant of self-rated health and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Public Health</span></span> <span class=\"reference-volume\">55</span>:<span class=\"reference-fpage\">531–</span><span class=\"reference-lpage\">42</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&amp;author=T+Nieminen&amp;author=T+Martelin&amp;author=S+Koskinen&amp;author=H+Aro&amp;author=E+Alanen&amp;author=MT+Hyypp%C3%A4&amp;journal=Int.+J.+Public+Health&amp;volume=55&amp;pages=531-42&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B98\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Sangster</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Gallis</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">98.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests, Trees and Human Health</span></span> Dordrecht: Springer\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&amp;author=K+Nilsson&amp;author=M+Sangster&amp;author=C+Gallis&amp;author=T+Hartig&amp;author=S+de+Vries&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B99\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">ME</span>, <span class=\"reference-surname\">Berglund</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">99.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Soundscape quality in suburban green areas and city parks. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Acta Acustica United Acustica</span></span> <span class=\"reference-volume\">92</span>:<span class=\"reference-fpage\">903–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&amp;author=ME+Nilsson&amp;author=B+Berglund&amp;journal=Acta+Acustica+United+Acustica&amp;volume=92&amp;pages=903-11&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B100\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>, <span class=\"reference-surname\">Crane</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Stevens</span> <span class=\"reference-given-names\">JC</span>. <span class=\"citation-label\">100.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Air pollution removal by urban trees and shrubs in the United States. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">115–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&amp;author=DJ+Nowak&amp;author=DE+Crane&amp;author=JC+Stevens&amp;journal=Urban+For.+Urban+Green.&amp;volume=4&amp;pages=115-23&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B101\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Olmsted</span> <span class=\"reference-given-names\">FL</span>. <span class=\"citation-label\">101.\\u2002</span> <span class=\"reference-year\">1970 (1870)</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Public Parks and the Enlargement of Towns</span></span> New York: Arno (Cambridge, MA: Riverside)\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&amp;author=FL+Olmsted&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B102\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Orwell</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Burchett</span> <span class=\"reference-given-names\">MD</span>, <span class=\"reference-surname\">Tarran</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Torpy</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">102.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Water Air Soil Poll.</span></span> <span class=\"reference-volume\">177</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&amp;author=RL+Orwell&amp;author=RA+Wood&amp;author=MD+Burchett&amp;author=J+Tarran&amp;author=F+Torpy&amp;journal=Water+Air+Soil+Poll.&amp;volume=177&amp;pages=59-80&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B103\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Paoletti</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Bardelli</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Giovannini</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Pecchioli</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">103.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Air quality impact of an urban park over time. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Procedia Environ. Sci.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">10–</span><span class=\"reference-lpage\">16</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&amp;author=E+Paoletti&amp;author=T+Bardelli&amp;author=G+Giovannini&amp;author=L+Pecchioli&amp;journal=Procedia+Environ.+Sci.&amp;volume=4&amp;pages=10-16&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B104\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Powell</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Paluch</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Blair</span> <span class=\"reference-given-names\">SN</span>. <span class=\"citation-label\">104.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Physical activity for health: What Kind? How much? How Intense? On Top of What?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">349–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&amp;author=KE+Powell&amp;author=AE+Paluch&amp;author=SN+Blair&amp;journal=Annu.+Rev.+Public+Health&amp;volume=32&amp;pages=349-65&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B105\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Peacock</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Sellens</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Griffin</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">105.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The mental and physical health outcomes of green exercise. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Environ. Health Res.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">319–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&amp;author=J+Pretty&amp;author=J+Peacock&amp;author=M+Sellens&amp;author=M+Griffin&amp;journal=Int.+J.+Environ.+Health+Res.&amp;volume=15&amp;pages=319-37&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B106\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Proctor</span> <span class=\"reference-given-names\">JD</span>. <span class=\"citation-label\">106.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> The social construction of nature: relativist accusations, pragmatist and critical realist responses. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Assoc. Am. Geogr.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">352–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&amp;author=JD+Proctor&amp;journal=Ann.+Assoc.+Am.+Geogr.&amp;volume=88&amp;pages=352-76&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B107\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">107.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Gender differences in relationships between urban green space and health in the United Kingdom. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">71</span>:<span class=\"reference-fpage\">568–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=71&amp;pages=568-75&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B108\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Astell-Burt</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">108.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Green cities and health: a question of scale?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">160–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;author=T+Hartig&amp;author=S+de+Vries&amp;author=T+Astell-Burt&amp;author=H+Frumkin&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=66&amp;pages=160-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B109\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Pearce</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kingham</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">109.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Role of physical activity in the relationship between urban green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">127</span>:<span class=\"reference-fpage\">318–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&amp;author=EA+Richardson&amp;author=J+Pearce&amp;author=R+Mitchell&amp;author=S+Kingham&amp;journal=Public+Health&amp;volume=127&amp;pages=318-24&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B110\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rios</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Aiken</span> <span class=\"reference-given-names\">LS</span>, <span class=\"reference-surname\">Zautra</span> <span class=\"reference-given-names\">AJ</span>. <span class=\"citation-label\">110.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Behav. Med.</span></span> <span class=\"reference-volume\">43</span>:<span class=\"reference-fpage\">50–</span><span class=\"reference-lpage\">61</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&amp;author=R+Rios&amp;author=LS+Aiken&amp;author=AJ+Zautra&amp;journal=Ann.+Behav.+Med.&amp;volume=43&amp;pages=50-61&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B111\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rose</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">111.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Sick individuals and sick populations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Epidemiol.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&amp;author=G+Rose&amp;journal=Int.+J.+Epidemiol.&amp;volume=30&amp;pages=427-32&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B112\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sartelet</span> <span class=\"reference-given-names\">KN</span>, <span class=\"reference-surname\">Couvidat</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Seigneur</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roustan</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">112.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Impact of biogenic emissions on air quality over Europe and North America. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">53</span>:<span class=\"reference-fpage\">131–</span><span class=\"reference-lpage\">41</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&amp;author=KN+Sartelet&amp;author=F+Couvidat&amp;author=C+Seigneur&amp;author=Y+Roustan&amp;journal=Atmos.+Environ.&amp;volume=53&amp;pages=131-41&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B113\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Setälä</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Viippola</span> <span class=\"reference-given-names\">V</span>, <span class=\"reference-surname\">Rantalainen</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Pennanen</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Yli-Pelkonen</span> <span class=\"reference-given-names\">V</span>. <span class=\"citation-label\">113.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Does urban vegetation mitigate air pollution in northern conditions?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">183</span>:<span class=\"reference-fpage\">104–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&amp;author=H+Set%C3%A4l%C3%A4&amp;author=V+Viippola&amp;author=AL+Rantalainen&amp;author=A+Pennanen&amp;author=V+Yli-Pelkonen&amp;journal=Environ.+Pollut.&amp;volume=183&amp;pages=104-12&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B114\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Simpson</span> <span class=\"reference-given-names\">JR</span>, <span class=\"reference-surname\">McPherson</span> <span class=\"reference-given-names\">EG</span>. <span class=\"citation-label\">114.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">69–</span><span class=\"reference-lpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&amp;author=JR+Simpson&amp;author=EG+McPherson&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=69-74&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B115\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">115.\\u2002</span> <span class=\"reference-year\">1988</span>. <span class=\"reference-article-title\"> Perception and aesthetics of the urban environment: review of the role of vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">106</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&amp;author=RC+Smardon&amp;journal=Landsc.+Urban+Plann.&amp;volume=15&amp;pages=85-106&amp;publication_year=1988&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B116\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Van Gemerden</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">116.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&amp;author=H+Staats&amp;author=E+Van+Gemerden&amp;author=T+Hartig&amp;journal=Leis.+Sci.&amp;volume=32&amp;pages=401-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B117\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Stigsdotter</span> <span class=\"reference-given-names\">UK</span>, <span class=\"reference-surname\">Ekholm</span> <span class=\"reference-given-names\">O</span>, <span class=\"reference-surname\">Schipperijn</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Toftager</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Kamper-Jørgensen</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Randrup</span> <span class=\"reference-given-names\">TB</span>. <span class=\"citation-label\">117.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">411–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&amp;author=UK+Stigsdotter&amp;author=O+Ekholm&amp;author=J+Schipperijn&amp;author=M+Toftager&amp;author=F+Kamper-J%C3%B8rgensen&amp;author=TB+Randrup&amp;journal=Scand.+J.+Public+Health&amp;volume=38&amp;pages=411-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B118\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sugiyama</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Leslie</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Owen</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">118.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">62</span>:<span class=\"reference-fpage\">e9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&amp;author=T+Sugiyama&amp;author=E+Leslie&amp;author=B+Giles-Corti&amp;author=N+Owen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=62&amp;pages=e9&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B119\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Takano</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Nakamura</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Watanabe</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">119.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">56</span>:<span class=\"reference-fpage\">913–</span><span class=\"reference-lpage\">18</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&amp;author=T+Takano&amp;author=K+Nakamura&amp;author=M+Watanabe&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=56&amp;pages=913-18&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B120\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tallis</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Sinnett</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">120.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">38</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&amp;author=M+Tallis&amp;author=G+Taylor&amp;author=D+Sinnett&amp;author=P+Freer-Smith&amp;journal=Landsc.+Urban+Plann.&amp;volume=103&amp;pages=129-38&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B121\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>. <span class=\"citation-label\">121.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Children with attention deficits concentrate better after walk in the park. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Atten. Disord.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">402–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;journal=J.+Atten.+Disord.&amp;volume=12&amp;pages=402-9&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B122\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">122.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Views of nature and self-discipline: evidence from inner city children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">49–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=J.+Environ.+Psychol.&amp;volume=22&amp;pages=49-63&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B123\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Thompson Coon</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Boddy</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Stein</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Whear</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Depledge</span> <span class=\"reference-given-names\">MH</span>. <span class=\"citation-label\">123.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">1761–</span><span class=\"reference-lpage\">72</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&amp;author=J+Thompson+Coon&amp;author=K+Boddy&amp;author=K+Stein&amp;author=R+Whear&amp;author=J+Barton&amp;author=MH+Depledge&amp;journal=Environ.+Sci.+Technol.&amp;volume=45&amp;pages=1761-72&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B124\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tsunetsugu</span> <span class=\"reference-given-names\">Y</span>, <span class=\"reference-surname\">Park</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Miyazaki</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">124.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Prevent. Med.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">27–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&amp;author=Y+Tsunetsugu&amp;author=B+Park&amp;author=Y+Miyazaki&amp;journal=Environ.+Health+Prevent.+Med.&amp;volume=15&amp;pages=27-37&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B125\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">125.\\u2002</span> <span class=\"reference-year\">1979</span>. <span class=\"reference-article-title\"> Visual landscapes and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Res.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&amp;author=RS+Ulrich&amp;journal=Landsc.+Res.&amp;volume=4&amp;pages=17-23&amp;publication_year=1979&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B126\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">126.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Aesthetic and affective response to natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Human Behaviour and Environment: Advances in Theory and Research.</span></span> Volume\\n<span class=\"reference-volume\">6</span> <span class=\"reference-source\"><span class=\"reference-italic\">Behaviour and the Natural Environment</span></span>, ed. I\\nAltman, JF Wohlwill <span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">125</span> New York: Plenum\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&amp;author=RS+Ulrich&amp;journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&amp;pages=85-125&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B127\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Simons</span> <span class=\"reference-given-names\">RF</span>, <span class=\"reference-surname\">Losito</span> <span class=\"reference-given-names\">BD</span>, <span class=\"reference-surname\">Fiorito</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Miles</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Zelson</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">127.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Stress recovery during exposure to natural and urban environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">201–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&amp;author=RS+Ulrich&amp;author=RF+Simons&amp;author=BD+Losito&amp;author=E+Fiorito&amp;author=MA+Miles&amp;author=M+Zelson&amp;journal=J.+Environ.+Psychol.&amp;volume=11&amp;pages=201-30&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B128\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Cauwenberg</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">De Bourdeaudhuij</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">De Meester</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Van Dyck</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Salmon</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">128.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Relationship between the physical environment and physical activity in older adults: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">458–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&amp;author=J+Van+Cauwenberg&amp;author=I+De+Bourdeaudhuij&amp;author=F+De+Meester&amp;author=D+Van+Dyck&amp;author=J+Salmon&amp;journal=Health+Place&amp;volume=17&amp;pages=458-69&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B129\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Custers</span> <span class=\"reference-given-names\">MHG</span>. <span class=\"citation-label\">129.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Gardening promotes neuroendocrine and affective restoration from stress. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Health Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&amp;author=AE+Van+den+Berg&amp;author=MHG+Custers&amp;journal=J.+Health+Psychol.&amp;volume=16&amp;pages=3-11&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B130\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">130.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Green space as a buffer between stressful life events and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">70</span>:<span class=\"reference-fpage\">1203–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&amp;author=AE+Van+den+Berg&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Soc.+Sci.+Med.&amp;volume=70&amp;pages=1203-10&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B131\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>. <span class=\"citation-label\">131.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health</span></span> <span class=\"reference-volume\">9</span>:<span class=\"reference-fpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&amp;author=AE+Van+den+Berg&amp;author=M+van+Winsum-Westra&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;journal=Environ.+Health&amp;volume=9&amp;pages=74&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B132\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Herzele</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Podesta</span> <span class=\"reference-given-names\">MTC</span>, <span class=\"reference-surname\">van Zon</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">132.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: the challenge of linking practice and research. </span> See Ref. 98 <span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B133\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Montarzino</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">133.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> The childhood factor: adult visits to green places and the significance of childhood experience. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">111–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&amp;author=C+Ward+Thompson&amp;author=P+Aspinall&amp;author=A+Montarzino&amp;journal=Environ.+Behav.&amp;volume=40&amp;pages=111-43&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B134\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roe</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Clow</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Miller</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">134.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">105</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">29</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&amp;author=C+Ward+Thompson&amp;author=J+Roe&amp;author=P+Aspinall&amp;author=R+Mitchell&amp;author=A+Clow&amp;author=D+Miller&amp;journal=Landsc.+Urban+Plann.&amp;volume=105&amp;pages=221-29&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B135\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">135.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Nearby nature—a buffer of life stress among rural children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">311–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&amp;author=NM+Wells&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=35&amp;pages=311-30&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B136\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Lekies</span> <span class=\"reference-given-names\">KS</span>. <span class=\"citation-label\">136.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Nature and the life course: pathways from childhood nature experiences to adult environmentalism. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Child. Youth Environ.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&amp;author=NM+Wells&amp;author=KS+Lekies&amp;journal=Child.+Youth+Environ.&amp;volume=16&amp;pages=1-24&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B137\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Whitelaw</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">137.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Crit. Public Health</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&amp;author=S+Whitelaw&amp;journal=Crit.+Public+Health&amp;volume=22&amp;pages=427-40&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B138\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">138.\\u2002</span><span class=\"reference-collab\">WHO (World Health Organ.)</span> <span class=\"reference-year\">1946</span>. <span class=\"reference-article-title\"> <span class=\"reference-italic\">Preamble to the Constitution of the World Health Organization</span> as adopted by the International Health Conference. </span> New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&amp;publication_year=1946&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B139\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wilson</span> <span class=\"reference-given-names\">SJ</span>, <span class=\"reference-surname\">Lipsey</span> <span class=\"reference-given-names\">MW</span>. <span class=\"citation-label\">139.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eval. Program Plann.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&amp;author=SJ+Wilson&amp;author=MW+Lipsey&amp;journal=Eval.+Program+Plann.&amp;volume=23&amp;pages=1-12&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B140\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Yoo</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Kwon</span> <span class=\"reference-given-names\">YJ</span>, <span class=\"reference-surname\">Son</span> <span class=\"reference-given-names\">KC</span>, <span class=\"reference-surname\">Kays</span> <span class=\"reference-given-names\">SJ</span>. <span class=\"citation-label\">140.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Am. Soc. Hort. Sci.</span></span> <span class=\"reference-volume\">131</span>:<span class=\"reference-fpage\">452–</span><span class=\"reference-lpage\">58</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&amp;author=MH+Yoo&amp;author=YJ+Kwon&amp;author=KC+Son&amp;author=SJ+Kays&amp;journal=J.+Am.+Soc.+Hort.+Sci.&amp;volume=131&amp;pages=452-58&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B141\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Zick</span> <span class=\"reference-given-names\">CD</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">KR</span>, <span class=\"reference-surname\">Kowaleski-Jones</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Uno</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Merrill</span> <span class=\"reference-given-names\">BJ</span>. <span class=\"citation-label\">141.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Harvesting more than vegetables: the potential weight control benefits of community gardening. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">e1–</span><span class=\"reference-lpage\">6</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&amp;author=CD+Zick&amp;author=KR+Smith&amp;author=L+Kowaleski-Jones&amp;author=C+Uno&amp;author=BJ+Merrill&amp;journal=Am.+J.+Public+Health&amp;volume=103&amp;pages=e1-6&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li></ol></span><div class=\"clearer\">&nbsp;</div></div>\\n</div>\\n\\n<div id=\"article-level-0-figs-and-tables\" class=\"bm\">\\n\\n</div>\\n\\n<div id=\"article-level-0-end-metadata\" class=\"fm\">\\n\\n</div></div></div>\\n\\n</div>\\n<div id=\"referenceContainer\" class=\"references hidden-js-div tabbedsection tab-pane\">\\n<div id=\"referencedetails\">\\n<template id=\"js-morelikethis-link\"></template>\\n<template id=\"js-webofscience-link\" class=\"externallink\"></template>\\n<template id=\"js-pubmed-link\"></template>\\n<p class=\"description\"><span class=\"tl-main-part\">Literature Cited</span></p>\\n<ol id=\"articlereference\" class=\"articlereference-vancouver\">\\n<li class=\"refbody\" id=\"ref-B1\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Akbari</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Kurn</span> <span class=\"reference-given-names\">DM</span>, <span class=\"reference-surname\">Bretz</span> <span class=\"reference-given-names\">SE</span>, <span class=\"reference-surname\">Hanford</span> <span class=\"reference-given-names\">JW</span>. <span class=\"citation-label\">1.\\u2002</span> <span class=\"reference-year\">1997</span>. <span class=\"reference-article-title\"> Peak power and cooling energy savings of shade trees. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Energy Build.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">139–</span><span class=\"reference-lpage\">48</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&amp;author=H+Akbari&amp;author=DM+Kurn&amp;author=SE+Bretz&amp;author=JW+Hanford&amp;journal=Energy+Build.&amp;volume=25&amp;pages=139-48&amp;publication_year=1997&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B2\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Annerstedt</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Währborg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">2.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Nature-assisted therapy: systematic review of controlled and observational studies. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">39</span>:<span class=\"reference-fpage\">371–</span><span class=\"reference-lpage\">88</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&amp;author=M+Annerstedt&amp;author=P+W%C3%A4hrborg&amp;journal=Scand.+J.+Public+Health&amp;volume=39&amp;pages=371-88&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B3\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">3.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3947–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&amp;author=J+Barton&amp;author=J+Pretty&amp;journal=Environ.+Sci.+Technol.&amp;volume=44&amp;pages=3947-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B4\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Baum</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Ziersch</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Zhang</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Osborne</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">4.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">925–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&amp;author=FE+Baum&amp;author=AM+Ziersch&amp;author=G+Zhang&amp;author=K+Osborne&amp;journal=Health+Place&amp;volume=15&amp;pages=925-34&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B5\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bauman</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Reis</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">JC</span>, <span class=\"reference-surname\">Loos</span> <span class=\"reference-given-names\">RJ</span>, <span class=\"reference-surname\">Martin</span> <span class=\"reference-given-names\">BW</span>. <span class=\"citation-label\">5.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Correlates of physical activity: Why are some people physically active and others not?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">380</span>:<span class=\"reference-fpage\">258–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&amp;author=AE+Bauman&amp;author=RS+Reis&amp;author=JF+Sallis&amp;author=JC+Wells&amp;author=RJ+Loos&amp;author=BW+Martin&amp;journal=Lancet&amp;volume=380&amp;pages=258-71&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B6\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beck</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Meyers</span> <span class=\"reference-given-names\">NM</span>. <span class=\"citation-label\">6.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Health enhancement and companion animal ownership. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">247–</span><span class=\"reference-lpage\">57</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&amp;author=AM+Beck&amp;author=NM+Meyers&amp;journal=Annu.+Rev.+Public+Health&amp;volume=17&amp;pages=247-57&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B7\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beckett</span> <span class=\"reference-given-names\">KP</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">PH</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">7.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> The capture of particulate pollution by trees at five contrasting urban sites. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Arboric. J.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">209–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&amp;author=KP+Beckett&amp;author=PH+Freer-Smith&amp;author=G+Taylor&amp;journal=Arboric.+J.&amp;volume=24&amp;pages=209-30&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B8\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bedimo-Rung</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Mowen</span> <span class=\"reference-given-names\">AJ</span>, <span class=\"reference-surname\">Cohen</span> <span class=\"reference-given-names\">DA</span>. <span class=\"citation-label\">8.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The significance of parks to physical activity and public health: a conceptual model. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">159–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&amp;author=AL+Bedimo-Rung&amp;author=AJ+Mowen&amp;author=DA+Cohen&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=159-68&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B9\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Benjamin</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Winer</span> <span class=\"reference-given-names\">AM</span>. <span class=\"citation-label\">9.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Estimating the ozone-forming potential of urban trees and shrubs. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">53–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&amp;author=MT+Benjamin&amp;author=AM+Winer&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=53-68&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B10\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bize</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Johnson</span> <span class=\"reference-given-names\">JA</span>, <span class=\"reference-surname\">Plotnikoff</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">10.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Physical activity level and health-related quality of life in the general adult population: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Prev. Med.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">15</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&amp;author=R+Bize&amp;author=JA+Johnson&amp;author=RC+Plotnikoff&amp;journal=Prev.+Med.&amp;volume=45&amp;pages=401-15&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B11\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">LM</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">11.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> A systematic review of evidence for the added benefits to health of exposure to natural environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">10</span>:<span class=\"reference-fpage\">456</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&amp;author=DE+Bowler&amp;author=LM+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=BMC+Public+Health&amp;volume=10&amp;pages=456&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B12\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">12.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Urban greening to cool towns and cities: a systematic review of the empirical evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">97</span>:<span class=\"reference-fpage\">147–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&amp;author=DE+Bowler&amp;author=L+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=Landsc.+Urban+Plann.&amp;volume=97&amp;pages=147-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B13\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brack</span> <span class=\"reference-given-names\">CL</span>. <span class=\"citation-label\">13.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollution mitigation and carbon sequestration by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">116</span>:<span class=\"reference-fpage\">S195–</span><span class=\"reference-lpage\">200</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&amp;author=CL+Brack&amp;journal=Environ.+Pollut.&amp;volume=116&amp;pages=S195-200&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B14\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Branas</span> <span class=\"reference-given-names\">CC</span>, <span class=\"reference-surname\">Cheney</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">MacDonald</span> <span class=\"reference-given-names\">JM</span>, <span class=\"reference-surname\">Tam</span> <span class=\"reference-given-names\">VW</span>, <span class=\"reference-surname\">Jackson</span> <span class=\"reference-given-names\">TD</span>, <span class=\"reference-surname\">Ten Have</span> <span class=\"reference-given-names\">TR</span>. <span class=\"citation-label\">14.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> A difference-in-differences analysis of health, safety, and greening vacant urban space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Epidemiol.</span></span> <span class=\"reference-volume\">174</span>:<span class=\"reference-fpage\">1296–</span><span class=\"reference-lpage\">306</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&amp;author=CC+Branas&amp;author=RA+Cheney&amp;author=JM+MacDonald&amp;author=VW+Tam&amp;author=TD+Jackson&amp;author=TR+Ten+Have&amp;journal=Am.+J.+Epidemiol.&amp;volume=174&amp;pages=1296-306&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B15\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bratman</span> <span class=\"reference-given-names\">GN</span>, <span class=\"reference-surname\">Hamilton</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Daily</span> <span class=\"reference-given-names\">GC</span>. <span class=\"citation-label\">15.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The impacts of nature experience on human cognitive function and mental health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. N.Y. Acad. Sci.</span></span> <span class=\"reference-volume\">1249</span>:<span class=\"reference-fpage\">118–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&amp;author=GN+Bratman&amp;author=JP+Hamilton&amp;author=GC+Daily&amp;journal=Ann.+N.Y.+Acad.+Sci.&amp;volume=1249&amp;pages=118-36&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B16\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bringslimark</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>. <span class=\"citation-label\">16.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> The psychological benefits of indoor plants: a critical review of the experimental literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">422–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&amp;author=T+Bringslimark&amp;author=T+Hartig&amp;author=GG+Patil&amp;journal=J.+Environ.+Psychol.&amp;volume=29&amp;pages=422-33&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B17\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Broekhuizen</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">SI</span>, <span class=\"reference-surname\">Pierik</span> <span class=\"reference-given-names\">FH</span>. <span class=\"citation-label\">17.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Aging in a Green Living Environment: A Systematic Review of the Literature.</span></span> TNO rep. R10154 Leiden: TNO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&amp;author=K+Broekhuizen&amp;author=SI+de+Vries&amp;author=FH+Pierik&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B18\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brooks</span> <span class=\"reference-given-names\">GD</span>, <span class=\"reference-surname\">Bush</span> <span class=\"reference-given-names\">RK</span>. <span class=\"citation-label\">18.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Allergens and other factors important in atopic disease. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Patterson\\'s Allergic Diseases</span></span> LC Grammer, PA Greenberger <span class=\"reference-fpage\">73–</span><span class=\"reference-lpage\">103</span> Philadelphia: Lippincott, Williams &amp; Wilkins, 7th ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&amp;author=GD+Brooks&amp;author=RK+Bush&amp;journal=Patterson%27s+Allergic+Diseases&amp;pages=73-103&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B19\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cariñanos</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Casares-Porcel</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">19.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">101</span>:<span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">14</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&amp;author=P+Cari%C3%B1anos&amp;author=M+Casares-Porcel&amp;journal=Landsc.+Urban+Plann.&amp;volume=101&amp;pages=205-14&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B20\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Chameides</span> <span class=\"reference-given-names\">WL</span>, <span class=\"reference-surname\">Lindsay</span> <span class=\"reference-given-names\">RW</span>, <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Kiang</span> <span class=\"reference-given-names\">CS</span>. <span class=\"citation-label\">20.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-article-title\"> The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">241</span>:<span class=\"reference-fpage\">1473–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&amp;author=WL+Chameides&amp;author=RW+Lindsay&amp;author=J+Richardson&amp;author=CS+Kiang&amp;journal=Science&amp;volume=241&amp;pages=1473-75&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B21\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cimprich</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">21.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Development of an intervention to restore attention in cancer patients. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Cancer Nurs.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">83–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&amp;author=B+Cimprich&amp;journal=Cancer+Nurs.&amp;volume=16&amp;pages=83-92&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B22\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Colfer</span> <span class=\"reference-given-names\">CJP</span>, <span class=\"reference-surname\">Sheil</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Kishi</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">22.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests and Human Health: Assessing the Evidence</span></span> Bogor, Indones.: Cent. Int. For. Res <a target=\"xrefwindow\" href=\"http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf\"><span class=\"reference-bold\">http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&amp;author=CJP+Colfer&amp;author=D+Sheil&amp;author=M+Kishi&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B23\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Day</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">23.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Plan Educ. Res.</span></span> <span class=\"reference-volume\">19</span>:<span class=\"reference-fpage\">265–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&amp;author=LL+Day&amp;journal=J.+Plan+Educ.+Res.&amp;volume=19&amp;pages=265-75&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B24\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Claßen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Eigenheer-Hug</span> <span class=\"reference-given-names\">S-M</span>, <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">24.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Contributions of natural environments to physical activity. </span> See Ref. 98 <span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&amp;author=S+de+Vries&amp;author=T+Cla%C3%9Fen&amp;author=S-M+Eigenheer-Hug&amp;author=K+Korpela&amp;author=J+Maas&amp;pages=205-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B25\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">25.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Streetscape greenery and health: stress, social cohesion and physical activity as mediators. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">94</span>:<span class=\"reference-fpage\">26–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Soc.+Sci.+Med.&amp;volume=94&amp;pages=26-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B26\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">26.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">1717–</span><span class=\"reference-lpage\">31</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&amp;author=S+de+Vries&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Environ.+Plann.+A&amp;volume=35&amp;pages=1717-31&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B27\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">DellaValle</span> <span class=\"reference-given-names\">CT</span>, <span class=\"reference-surname\">Triche</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Leaderer</span> <span class=\"reference-given-names\">BP</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">ML</span>. <span class=\"citation-label\">27.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Epidemiology</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">55–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&amp;author=CT+DellaValle&amp;author=EW+Triche&amp;author=BP+Leaderer&amp;author=ML+Bell&amp;journal=Epidemiology&amp;volume=23&amp;pages=55-63&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B28\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Den Hertog</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Bronkhorst</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Moerman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Van Wilgenburg</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">28.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit</span> [<span class=\"reference-italic\">The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity</span>].</span> Amsterdam: EMGO Inst.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&amp;author=F+Den+Hertog&amp;author=M+Bronkhorst&amp;author=M+Moerman&amp;author=R+Van+Wilgenburg&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B29\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Kerr</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Lee</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Rosenberg</span> <span class=\"reference-given-names\">DE</span>. <span class=\"citation-label\">29.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Neighborhood environment and physical activity among youth: a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">442–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&amp;author=D+Ding&amp;author=JF+Sallis&amp;author=J+Kerr&amp;author=S+Lee&amp;author=DE+Rosenberg&amp;journal=Am.+J.+Prev.+Med.&amp;volume=41&amp;pages=442-55&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B30\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Domm</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Drew</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Greene</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Ripley</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Tordesillas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">30.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Recommended urban forest mixtures to optimize selected environmental benefits. </span> <span class=\"reference-source\"><span class=\"reference-italic\">EnviroNews: Int. Soc. Environ. Bot.</span></span> <span class=\"reference-volume\">14</span>:<span class=\"reference-fpage\">7–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&amp;author=J+Domm&amp;author=R+Drew&amp;author=A+Greene&amp;author=E+Ripley&amp;author=R+Smardon&amp;author=J+Tordesillas&amp;journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&amp;volume=14&amp;pages=7-10&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B31\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Donovan</span> <span class=\"reference-given-names\">GH</span>, <span class=\"reference-surname\">Prestemon</span> <span class=\"reference-given-names\">JP</span>. <span class=\"citation-label\">31.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The effect of trees on crime in Portland, Oregon. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&amp;author=GH+Donovan&amp;author=JP+Prestemon&amp;journal=Environ.+Behav.&amp;volume=44&amp;pages=3-30&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B32\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Eid</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Overman</span> <span class=\"reference-given-names\">HG</span>, <span class=\"reference-surname\">Puga</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Turner</span> <span class=\"reference-given-names\">MA</span>. <span class=\"citation-label\">32.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Fat city: questioning the relationship between urban sprawl and obesity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Urban Econ.</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">385–</span><span class=\"reference-lpage\">404</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&amp;author=J+Eid&amp;author=HG+Overman&amp;author=D+Puga&amp;author=MA+Turner&amp;journal=J.+Urban+Econ.&amp;volume=63&amp;pages=385-404&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B33\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Engel</span> <span class=\"reference-given-names\">GL</span>. <span class=\"citation-label\">33.\\u2002</span> <span class=\"reference-year\">1977</span>. <span class=\"reference-article-title\"> The need for a new medical model: a challenge for biomedicine. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">196</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&amp;author=GL+Engel&amp;journal=Science&amp;volume=196&amp;pages=129-36&amp;publication_year=1977&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B34\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Escobedo</span> <span class=\"reference-given-names\">FJ</span>, <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>. <span class=\"citation-label\">34.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Spatial heterogeneity and air pollution removal by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">90</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&amp;author=FJ+Escobedo&amp;author=DJ+Nowak&amp;journal=Landsc.+Urban+Plann.&amp;volume=90&amp;pages=102-10&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B35\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ferdinand</span> <span class=\"reference-given-names\">AO</span>, <span class=\"reference-surname\">Sen</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Rahurkar</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Engler</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Menachemi</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">35.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The relationship between built environments and physical activity: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">102</span>:<span class=\"reference-fpage\">e7–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&amp;author=AO+Ferdinand&amp;author=B+Sen&amp;author=S+Rahurkar&amp;author=S+Engler&amp;author=N+Menachemi&amp;journal=Am.+J.+Public+Health&amp;volume=102&amp;pages=e7-13&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B36\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Forrest</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kearns</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">36.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Social cohesion, social capital and the neighbourhood. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban Stud.</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">2125–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&amp;author=R+Forrest&amp;author=A+Kearns&amp;journal=Urban+Stud.&amp;volume=38&amp;pages=2125-43&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B37\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fowler</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">37.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollutant deposition and uptake by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Air Pollution and Plant Life</span></span> JNB Bell, M Treshow <span class=\"reference-fpage\">43–</span><span class=\"reference-lpage\">67</span> New York: Wiley, 2nd ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&amp;author=D+Fowler&amp;journal=Air+Pollution+and+Plant+Life&amp;pages=43-67&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B38\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">38.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Creating sense of community: the role of public space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&amp;author=J+Francis&amp;author=B+Giles-Corti&amp;author=L+Wood&amp;author=M+Knuiman&amp;journal=J.+Environ.+Psychol.&amp;volume=32&amp;pages=401-9&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B39\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">LJ</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">39.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">74</span>:<span class=\"reference-fpage\">1570–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&amp;author=J+Francis&amp;author=LJ+Wood&amp;author=M+Knuiman&amp;author=B+Giles-Corti&amp;journal=Soc.+Sci.+Med.&amp;volume=74&amp;pages=1570-77&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B40\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fraser</span> <span class=\"reference-given-names\">SDS</span>, <span class=\"reference-surname\">Lock</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">40.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Cycling for transport and public health: a systematic review of the effect of the environment on cycling. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eur. J. Public Health</span></span> <span class=\"reference-volume\">21</span>:<span class=\"reference-fpage\">738–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&amp;author=SDS+Fraser&amp;author=K+Lock&amp;journal=Eur.+J.+Public+Health&amp;volume=21&amp;pages=738-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B41\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frost</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Goins</span> <span class=\"reference-given-names\">RT</span>, <span class=\"reference-surname\">Hunter</span> <span class=\"reference-given-names\">RH</span>, <span class=\"reference-surname\">Hooker</span> <span class=\"reference-given-names\">SP</span>, <span class=\"reference-surname\">Bryant</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">41.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Effects of the built environment on physical activity of adults living in rural settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Health Promot.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">267–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&amp;author=SS+Frost&amp;author=RT+Goins&amp;author=RH+Hunter&amp;author=SP+Hooker&amp;author=LL+Bryant&amp;journal=Am.+J.+Health+Promot.&amp;volume=24&amp;pages=267-83&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B42\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">42.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Beyond toxicity: human health and the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">234–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=20&amp;pages=234-40&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B43\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">43.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The evidence of nature and the nature of evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">196–</span><span class=\"reference-lpage\">97</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=44&amp;pages=196-97&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B44\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Galea</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Vlahov</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">44.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Urban health: evidence, challenges, and directions. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">341–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&amp;author=S+Galea&amp;author=D+Vlahov&amp;journal=Annu.+Rev.+Public+Health&amp;volume=26&amp;pages=341-65&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B45\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gatersleben</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Andrews</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">45.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> When walking in nature is not restorative—the role of prospect and refuge. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">91–</span><span class=\"reference-lpage\">101</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&amp;author=B+Gatersleben&amp;author=M+Andrews&amp;journal=Health+Place&amp;volume=20&amp;pages=91-101&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B46\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Broomhall</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Collins</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Douglas</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">46.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Increasing walking: How important is distance to, attractiveness, and size of public open space?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&amp;author=B+Giles-Corti&amp;author=MH+Broomhall&amp;author=M+Knuiman&amp;author=C+Collins&amp;author=K+Douglas&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=169-76&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B47\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gonzalez</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>, <span class=\"reference-surname\">Martinsen</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Kirkevold</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">47.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Therapeutic horticulture in clinical depression: a prospective study of active components. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Adv. Nurs.</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">2002–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&amp;author=MT+Gonzalez&amp;author=T+Hartig&amp;author=GG+Patil&amp;author=EW+Martinsen&amp;author=M+Kirkevold&amp;journal=J.+Adv.+Nurs.&amp;volume=66&amp;pages=2002-13&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B48\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">48.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Nature experience in transactional perspective. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&amp;author=T+Hartig&amp;journal=Landsc.+Urban+Plann.&amp;volume=25&amp;pages=17-36&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B49\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>, <span class=\"reference-surname\">Jamner</span> <span class=\"reference-given-names\">LD</span>, <span class=\"reference-surname\">Davis</span> <span class=\"reference-given-names\">DS</span>, <span class=\"reference-surname\">Gärling</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">49.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Tracking restoration in natural and urban field settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">109–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&amp;author=T+Hartig&amp;author=GW+Evans&amp;author=LD+Jamner&amp;author=DS+Davis&amp;author=T+G%C3%A4rling&amp;journal=J.+Environ.+Psychol.&amp;volume=23&amp;pages=109-23&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B50\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Fransson</span> <span class=\"reference-given-names\">U</span>. <span class=\"citation-label\">50.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">82–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&amp;author=T+Hartig&amp;author=U+Fransson&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=82-96&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B51\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Kylin</span> <span class=\"reference-given-names\">C</span>. <span class=\"citation-label\">51.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Residence in the social ecology of stress and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Soc. Iss.</span></span> <span class=\"reference-volume\">59</span>:<span class=\"reference-fpage\">611–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&amp;author=T+Hartig&amp;author=G+Johansson&amp;author=C+Kylin&amp;journal=J.+Soc.+Iss.&amp;volume=59&amp;pages=611-36&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B52\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Mang</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">52.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Restorative effects of natural environment experiences. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&amp;author=T+Hartig&amp;author=M+Mang&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=23&amp;pages=3-26&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B53\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Hagerhall</span> <span class=\"reference-given-names\">CM</span>, <span class=\"reference-surname\">Tomalak</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">53.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: psychological, social and cultural processes. </span> See Ref. 98 <span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B54\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">54.\\u2002</span><span class=\"reference-collab\">Health Counc. Neth</span> <span class=\"reference-year\">2004</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being.</span></span> The Hague: Health Counc. Neth., RMNO <a target=\"xrefwindow\" href=\"http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf\"><span class=\"reference-bold\">http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&amp;publication_year=2004&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B55\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Heinen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">van Wee</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Maat</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">55.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Commuting by bicycle: an overview of the literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Transp. Rev.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&amp;author=E+Heinen&amp;author=B+van+Wee&amp;author=K+Maat&amp;journal=Transp.+Rev.&amp;volume=30&amp;pages=59-96&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B56\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hillsdon</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Panter</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Foster</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">56.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The relationship between access and quality of urban green space with population physical activity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">120</span>:<span class=\"reference-fpage\">1127–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&amp;author=M+Hillsdon&amp;author=J+Panter&amp;author=C+Foster&amp;author=A+Jones&amp;journal=Public+Health&amp;volume=120&amp;pages=1127-32&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B57\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Holt-Lunstad</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">TB</span>, <span class=\"reference-surname\">Layton</span> <span class=\"reference-given-names\">JB</span>. <span class=\"citation-label\">57.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social relationships and mortality risk: a meta-analytic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">PLoS Med.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">e1000316</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&amp;author=J+Holt-Lunstad&amp;author=TB+Smith&amp;author=JB+Layton&amp;journal=PLoS+Med.&amp;volume=7&amp;pages=e1000316&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B58\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Home</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hunziker</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">58.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Psychosocial outcomes as motivations for visiting nearby urban green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">34</span>:<span class=\"reference-fpage\">350–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&amp;author=R+Home&amp;author=M+Hunziker&amp;author=N+Bauer&amp;journal=Leis.+Sci.&amp;volume=34&amp;pages=350-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B59\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Islam</span> <span class=\"reference-given-names\">MN</span>, <span class=\"reference-surname\">Rahman</span> <span class=\"reference-given-names\">K-S</span>, <span class=\"reference-surname\">Bahar</span> <span class=\"reference-given-names\">MM</span>, <span class=\"reference-surname\">Habib</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Ando</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hattori</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">59.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Pollution attenuation by roadside greenbelt in and around urban areas. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">460–</span><span class=\"reference-lpage\">64</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&amp;author=MN+Islam&amp;author=K-S+Rahman&amp;author=MM+Bahar&amp;author=MA+Habib&amp;author=K+Ando&amp;author=N+Hattori&amp;journal=Urban+For.+Urban+Green.&amp;volume=11&amp;pages=460-64&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B60\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jahncke</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Hygge</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Halin</span> <span class=\"reference-given-names\">N</span>, <span class=\"reference-surname\">Green</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Dimberg</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">60.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Open-plan office noise: cognitive performance and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">31</span>:<span class=\"reference-fpage\">373–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&amp;author=H+Jahncke&amp;author=S+Hygge&amp;author=N+Halin&amp;author=AM+Green&amp;author=K+Dimberg&amp;journal=J.+Environ.+Psychol.&amp;volume=31&amp;pages=373-82&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B61\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Janssen</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">LeBlanc</span> <span class=\"reference-given-names\">AG</span>. <span class=\"citation-label\">61.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Behav. Nutr. Phys. Act.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&amp;author=I+Janssen&amp;author=AG+LeBlanc&amp;journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&amp;volume=7&amp;pages=40&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B62\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Fors</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Lindgren</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Wiström</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">62.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Perceived personal safety in relation to urban woodland vegetation—a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&amp;author=M+Jansson&amp;author=H+Fors&amp;author=T+Lindgren&amp;author=B+Wistr%C3%B6m&amp;journal=Urban+For.+Urban+Green.&amp;volume=12&amp;pages=127-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B63\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jim</span> <span class=\"reference-given-names\">CY</span>, <span class=\"reference-surname\">Chen</span> <span class=\"reference-given-names\">WY</span>. <span class=\"citation-label\">63.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Manag.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">665–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&amp;author=CY+Jim&amp;author=WY+Chen&amp;journal=J.+Environ.+Manag.&amp;volume=88&amp;pages=665-76&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B64\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">64.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Psychological benefits of walking: moderation by company and outdoor environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Appl. Psychol. Health Well-Being</span></span> <span class=\"reference-volume\">3</span>:<span class=\"reference-fpage\">261–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&amp;author=M+Johansson&amp;author=T+Hartig&amp;author=H+Staats&amp;journal=Appl.+Psychol.+Health+Well-Being&amp;volume=3&amp;pages=261-80&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B65\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaczynski</span> <span class=\"reference-given-names\">AT</span>, <span class=\"reference-surname\">Henderson</span> <span class=\"reference-given-names\">KA</span>. <span class=\"citation-label\">65.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Environmental correlates of physical activity: a review of evidence about parks and recreation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">315–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&amp;author=AT+Kaczynski&amp;author=KA+Henderson&amp;journal=Leis.+Sci.&amp;volume=29&amp;pages=315-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B66\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">66.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> The role of nature in the context of the workplace. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">193–</span><span class=\"reference-lpage\">201</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&amp;author=R+Kaplan&amp;journal=Landsc.+Urban+Plann.&amp;volume=26&amp;pages=193-201&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B67\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">67.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-source\"><span class=\"reference-italic\">The Experience of Nature: A Psychological Perspective</span></span> New York: Cambridge Univ. Press\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&amp;author=R+Kaplan&amp;author=S+Kaplan&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B68\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">68.\\u2002</span> <span class=\"reference-year\">1995</span>. <span class=\"reference-article-title\"> The restorative benefits of nature: toward an integrative framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&amp;author=S+Kaplan&amp;journal=J.+Environ.+Psychol.&amp;volume=15&amp;pages=169-82&amp;publication_year=1995&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B69\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">69.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Meditation, restoration, and the management of mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">480–</span><span class=\"reference-lpage\">506</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&amp;author=S+Kaplan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=480-506&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B70\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Karl</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Harley</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Emmons</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Thornton</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Guenther</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">70.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">330</span>:<span class=\"reference-fpage\">816–</span><span class=\"reference-lpage\">19</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&amp;author=T+Karl&amp;author=P+Harley&amp;author=L+Emmons&amp;author=B+Thornton&amp;author=A+Guenther&amp;journal=Science&amp;volume=330&amp;pages=816-19&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B71\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaźmierczak</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">71.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The contribution of local parks to neighbourhood social ties. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">109</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">44</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&amp;author=A+Ka%C5%BAmierczak&amp;journal=Landsc.+Urban+Plann.&amp;volume=109&amp;pages=31-44&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B72\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Knopf</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">72.\\u2002</span> <span class=\"reference-year\">1987</span>. <span class=\"reference-article-title\"> Human behavior, cognition, and affect in the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Handbook of Environmental Psychology</span></span> D Stokols, I Altman <span class=\"reference-fpage\">783–</span><span class=\"reference-lpage\">825</span> New York: Wiley\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&amp;author=RC+Knopf&amp;journal=Handbook+of+Environmental+Psychology&amp;pages=783-825&amp;publication_year=1987&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B73\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">73.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Restorative qualities of favorite places. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&amp;author=K+Korpela&amp;author=T+Hartig&amp;journal=J.+Environ.+Psychol.&amp;volume=16&amp;pages=221-33&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B74\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kroll</span> <span class=\"reference-given-names\">JH</span>, <span class=\"reference-surname\">Seinfeld</span> <span class=\"reference-given-names\">JH</span>. <span class=\"citation-label\">74.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">42</span>:<span class=\"reference-fpage\">3593–</span><span class=\"reference-lpage\">624</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&amp;author=JH+Kroll&amp;author=JH+Seinfeld&amp;journal=Atmos.+Environ.&amp;volume=42&amp;pages=3593-624&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B75\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">75.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Aggression and violence in the inner city: effects of environment via mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">543–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=543-71&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B76\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">76.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Environment and crime in the inner city: Does vegetation reduce crime?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">343–</span><span class=\"reference-lpage\">67</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=343-67&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B77\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>, <span class=\"reference-surname\">Coley</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Brunson</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">77.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Fertile ground for community: inner-city neighborhood common spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Community Psychol.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">823–</span><span class=\"reference-lpage\">51</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;author=RL+Coley&amp;author=L+Brunson&amp;journal=Am.+J.+Community+Psychol.&amp;volume=26&amp;pages=823-51&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B78\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">78.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Greenspace and obesity: a systematic review of the evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Obes. Rev.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">e183–</span><span class=\"reference-lpage\">89</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Obes.+Rev.&amp;volume=12&amp;pages=e183-89&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B79\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">79.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">118</span>:<span class=\"reference-fpage\">62–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Landsc.+Urban+Plann.&amp;volume=118&amp;pages=62-69&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B80\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lindheim</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Syme</span> <span class=\"reference-given-names\">SL</span>. <span class=\"citation-label\">80.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Environments, people, and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">335–</span><span class=\"reference-lpage\">59</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&amp;author=R+Lindheim&amp;author=SL+Syme&amp;journal=Annu.+Rev.+Public+Health&amp;volume=4&amp;pages=335-59&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B81\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Liu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Mu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Zhu</span> <span class=\"reference-given-names\">Y-G</span>, <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Arens</span> <span class=\"reference-given-names\">NC</span>. <span class=\"citation-label\">81.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Which ornamental plant species effectively remove benzene from indoor air?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">650–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&amp;author=Y-J+Liu&amp;author=Y-J+Mu&amp;author=Y-G+Zhu&amp;author=H+Ding&amp;author=NC+Arens&amp;journal=Atmos.+Environ.&amp;volume=41&amp;pages=650-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B82\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lloyd</span> <span class=\"reference-given-names\">GER</span>, <span class=\"reference-surname\">Chadwick</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mann</span> <span class=\"reference-given-names\">WN</span>. <span class=\"citation-label\">82.\\u2002</span> <span class=\"reference-year\">1978</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Hippocratic Writings</span></span> Harmondsworth: Penguin\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&amp;author=GER+Lloyd&amp;author=J+Chadwick&amp;author=WN+Mann&amp;publication_year=1978&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B83\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lovasi</span> <span class=\"reference-given-names\">GS</span>, <span class=\"reference-surname\">O\\'Neil-Dunne</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Lu</span> <span class=\"reference-given-names\">JW</span>, <span class=\"reference-surname\">Sheehan</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Perzanowski</span> <span class=\"reference-given-names\">MS</span>. <span class=\"citation-label\">83.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Perspect.</span></span> <span class=\"reference-volume\">121</span>:<span class=\"reference-fpage\">494–</span><span class=\"reference-lpage\">500</span> 00e1–6 \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&amp;author=GS+Lovasi&amp;author=JP+O%27Neil-Dunne&amp;author=JW+Lu&amp;author=D+Sheehan&amp;author=MS+Perzanowski&amp;journal=Environ.+Health+Perspect.&amp;volume=121&amp;pages=494-500&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B84\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">84.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Is green space in the living environment associated with people\\'s feelings of social safety?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">1763–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&amp;author=J+Maas&amp;author=P+Spreeuwenberg&amp;author=M+van+Winsum-Westra&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=PP+Groenewegen&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=1763-77&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B85\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SM</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">85.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Social contacts as a possible mechanism behind the relation between green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">586–</span><span class=\"reference-lpage\">95</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&amp;author=J+Maas&amp;author=SM+van+Dillen&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Health+Place&amp;volume=15&amp;pages=586-95&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B86\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Schellevis</span> <span class=\"reference-given-names\">FG</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">86.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Morbidity is related to a green living environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">967–</span><span class=\"reference-lpage\">73</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;author=FG+Schellevis&amp;author=PP+Groenewegen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=63&amp;pages=967-73&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B87\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">87.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Green space, urbanity, and health: How strong is the relation?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">60</span>:<span class=\"reference-fpage\">587–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=60&amp;pages=587-92&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B88\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">88.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">8</span>:<span class=\"reference-fpage\">206</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=P+Spreeuwenberg&amp;author=PP+Groenewegen&amp;journal=BMC+Public+Health&amp;volume=8&amp;pages=206&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B89\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maller</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Townsend</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">St Leger</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Henderson-Wilson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Pryor</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">89.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context</span></span> Melbourne, Aust.: Deakin Univ.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&amp;author=C+Maller&amp;author=M+Townsend&amp;author=L+St+Leger&amp;author=C+Henderson-Wilson&amp;author=A+Pryor&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B90\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCormack</span> <span class=\"reference-given-names\">GR</span>, <span class=\"reference-surname\">Rock</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Toohey</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Hignell</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">90.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">712–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&amp;author=GR+McCormack&amp;author=M+Rock&amp;author=AM+Toohey&amp;author=D+Hignell&amp;journal=Health+Place&amp;volume=16&amp;pages=712-26&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B91\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCurdy</span> <span class=\"reference-given-names\">LE</span>, <span class=\"reference-surname\">Winterbottom</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Mehta</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Roberts</span> <span class=\"reference-given-names\">JR</span>. <span class=\"citation-label\">91.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Using nature and outdoor activity to improve children\\'s health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Curr. Probl. Pediatr. Adolesc. Health Care</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&amp;author=LE+McCurdy&amp;author=KE+Winterbottom&amp;author=SS+Mehta&amp;author=JR+Roberts&amp;journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&amp;volume=40&amp;pages=102-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B92\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">92.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Is physical activity in natural environments better for mental health than physical activity in other environments?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">130–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=91&amp;pages=130-34&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B93\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">93.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Greenspace, urbanity and health: relationships in England. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">61</span>:<span class=\"reference-fpage\">681–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=61&amp;pages=681-83&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B94\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">94.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Effect of exposure to natural environment on health inequalities: an observational population study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">372</span>:<span class=\"reference-fpage\">1655–</span><span class=\"reference-lpage\">60</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=Lancet&amp;volume=372&amp;pages=1655-60&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B95\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitrione</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">95.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Therapeutic responses to natural environments: using gardens to improve health care. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Minn. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&amp;author=S+Mitrione&amp;journal=Minn.+Med.&amp;volume=91&amp;pages=31-34&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B96\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Muñoz</span> <span class=\"reference-given-names\">S-A</span>. <span class=\"citation-label\">96.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Children in the Outdoors: A Literature Review</span></span> Forres, Scotl.: Sustain. Dev. Res. Cent.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&amp;author=S-A+Mu%C3%B1oz&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B97\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nieminen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Martelin</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Koskinen</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Aro</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Alanen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hyyppä</span> <span class=\"reference-given-names\">MT</span>. <span class=\"citation-label\">97.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social capital as a determinant of self-rated health and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Public Health</span></span> <span class=\"reference-volume\">55</span>:<span class=\"reference-fpage\">531–</span><span class=\"reference-lpage\">42</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&amp;author=T+Nieminen&amp;author=T+Martelin&amp;author=S+Koskinen&amp;author=H+Aro&amp;author=E+Alanen&amp;author=MT+Hyypp%C3%A4&amp;journal=Int.+J.+Public+Health&amp;volume=55&amp;pages=531-42&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B98\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Sangster</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Gallis</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">98.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests, Trees and Human Health</span></span> Dordrecht: Springer\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&amp;author=K+Nilsson&amp;author=M+Sangster&amp;author=C+Gallis&amp;author=T+Hartig&amp;author=S+de+Vries&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B99\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">ME</span>, <span class=\"reference-surname\">Berglund</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">99.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Soundscape quality in suburban green areas and city parks. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Acta Acustica United Acustica</span></span> <span class=\"reference-volume\">92</span>:<span class=\"reference-fpage\">903–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&amp;author=ME+Nilsson&amp;author=B+Berglund&amp;journal=Acta+Acustica+United+Acustica&amp;volume=92&amp;pages=903-11&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B100\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>, <span class=\"reference-surname\">Crane</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Stevens</span> <span class=\"reference-given-names\">JC</span>. <span class=\"citation-label\">100.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Air pollution removal by urban trees and shrubs in the United States. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">115–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&amp;author=DJ+Nowak&amp;author=DE+Crane&amp;author=JC+Stevens&amp;journal=Urban+For.+Urban+Green.&amp;volume=4&amp;pages=115-23&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B101\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Olmsted</span> <span class=\"reference-given-names\">FL</span>. <span class=\"citation-label\">101.\\u2002</span> <span class=\"reference-year\">1970 (1870)</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Public Parks and the Enlargement of Towns</span></span> New York: Arno (Cambridge, MA: Riverside)\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&amp;author=FL+Olmsted&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B102\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Orwell</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Burchett</span> <span class=\"reference-given-names\">MD</span>, <span class=\"reference-surname\">Tarran</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Torpy</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">102.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Water Air Soil Poll.</span></span> <span class=\"reference-volume\">177</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&amp;author=RL+Orwell&amp;author=RA+Wood&amp;author=MD+Burchett&amp;author=J+Tarran&amp;author=F+Torpy&amp;journal=Water+Air+Soil+Poll.&amp;volume=177&amp;pages=59-80&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B103\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Paoletti</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Bardelli</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Giovannini</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Pecchioli</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">103.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Air quality impact of an urban park over time. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Procedia Environ. Sci.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">10–</span><span class=\"reference-lpage\">16</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&amp;author=E+Paoletti&amp;author=T+Bardelli&amp;author=G+Giovannini&amp;author=L+Pecchioli&amp;journal=Procedia+Environ.+Sci.&amp;volume=4&amp;pages=10-16&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B104\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Powell</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Paluch</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Blair</span> <span class=\"reference-given-names\">SN</span>. <span class=\"citation-label\">104.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Physical activity for health: What Kind? How much? How Intense? On Top of What?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">349–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&amp;author=KE+Powell&amp;author=AE+Paluch&amp;author=SN+Blair&amp;journal=Annu.+Rev.+Public+Health&amp;volume=32&amp;pages=349-65&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B105\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Peacock</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Sellens</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Griffin</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">105.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The mental and physical health outcomes of green exercise. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Environ. Health Res.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">319–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&amp;author=J+Pretty&amp;author=J+Peacock&amp;author=M+Sellens&amp;author=M+Griffin&amp;journal=Int.+J.+Environ.+Health+Res.&amp;volume=15&amp;pages=319-37&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B106\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Proctor</span> <span class=\"reference-given-names\">JD</span>. <span class=\"citation-label\">106.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> The social construction of nature: relativist accusations, pragmatist and critical realist responses. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Assoc. Am. Geogr.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">352–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&amp;author=JD+Proctor&amp;journal=Ann.+Assoc.+Am.+Geogr.&amp;volume=88&amp;pages=352-76&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B107\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">107.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Gender differences in relationships between urban green space and health in the United Kingdom. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">71</span>:<span class=\"reference-fpage\">568–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=71&amp;pages=568-75&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B108\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Astell-Burt</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">108.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Green cities and health: a question of scale?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">160–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;author=T+Hartig&amp;author=S+de+Vries&amp;author=T+Astell-Burt&amp;author=H+Frumkin&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=66&amp;pages=160-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B109\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Pearce</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kingham</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">109.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Role of physical activity in the relationship between urban green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">127</span>:<span class=\"reference-fpage\">318–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&amp;author=EA+Richardson&amp;author=J+Pearce&amp;author=R+Mitchell&amp;author=S+Kingham&amp;journal=Public+Health&amp;volume=127&amp;pages=318-24&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B110\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rios</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Aiken</span> <span class=\"reference-given-names\">LS</span>, <span class=\"reference-surname\">Zautra</span> <span class=\"reference-given-names\">AJ</span>. <span class=\"citation-label\">110.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Behav. Med.</span></span> <span class=\"reference-volume\">43</span>:<span class=\"reference-fpage\">50–</span><span class=\"reference-lpage\">61</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&amp;author=R+Rios&amp;author=LS+Aiken&amp;author=AJ+Zautra&amp;journal=Ann.+Behav.+Med.&amp;volume=43&amp;pages=50-61&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B111\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rose</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">111.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Sick individuals and sick populations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Epidemiol.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&amp;author=G+Rose&amp;journal=Int.+J.+Epidemiol.&amp;volume=30&amp;pages=427-32&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B112\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sartelet</span> <span class=\"reference-given-names\">KN</span>, <span class=\"reference-surname\">Couvidat</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Seigneur</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roustan</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">112.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Impact of biogenic emissions on air quality over Europe and North America. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">53</span>:<span class=\"reference-fpage\">131–</span><span class=\"reference-lpage\">41</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&amp;author=KN+Sartelet&amp;author=F+Couvidat&amp;author=C+Seigneur&amp;author=Y+Roustan&amp;journal=Atmos.+Environ.&amp;volume=53&amp;pages=131-41&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B113\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Setälä</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Viippola</span> <span class=\"reference-given-names\">V</span>, <span class=\"reference-surname\">Rantalainen</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Pennanen</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Yli-Pelkonen</span> <span class=\"reference-given-names\">V</span>. <span class=\"citation-label\">113.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Does urban vegetation mitigate air pollution in northern conditions?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">183</span>:<span class=\"reference-fpage\">104–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&amp;author=H+Set%C3%A4l%C3%A4&amp;author=V+Viippola&amp;author=AL+Rantalainen&amp;author=A+Pennanen&amp;author=V+Yli-Pelkonen&amp;journal=Environ.+Pollut.&amp;volume=183&amp;pages=104-12&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B114\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Simpson</span> <span class=\"reference-given-names\">JR</span>, <span class=\"reference-surname\">McPherson</span> <span class=\"reference-given-names\">EG</span>. <span class=\"citation-label\">114.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">69–</span><span class=\"reference-lpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&amp;author=JR+Simpson&amp;author=EG+McPherson&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=69-74&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B115\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">115.\\u2002</span> <span class=\"reference-year\">1988</span>. <span class=\"reference-article-title\"> Perception and aesthetics of the urban environment: review of the role of vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">106</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&amp;author=RC+Smardon&amp;journal=Landsc.+Urban+Plann.&amp;volume=15&amp;pages=85-106&amp;publication_year=1988&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B116\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Van Gemerden</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">116.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&amp;author=H+Staats&amp;author=E+Van+Gemerden&amp;author=T+Hartig&amp;journal=Leis.+Sci.&amp;volume=32&amp;pages=401-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B117\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Stigsdotter</span> <span class=\"reference-given-names\">UK</span>, <span class=\"reference-surname\">Ekholm</span> <span class=\"reference-given-names\">O</span>, <span class=\"reference-surname\">Schipperijn</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Toftager</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Kamper-Jørgensen</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Randrup</span> <span class=\"reference-given-names\">TB</span>. <span class=\"citation-label\">117.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">411–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&amp;author=UK+Stigsdotter&amp;author=O+Ekholm&amp;author=J+Schipperijn&amp;author=M+Toftager&amp;author=F+Kamper-J%C3%B8rgensen&amp;author=TB+Randrup&amp;journal=Scand.+J.+Public+Health&amp;volume=38&amp;pages=411-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B118\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sugiyama</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Leslie</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Owen</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">118.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">62</span>:<span class=\"reference-fpage\">e9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&amp;author=T+Sugiyama&amp;author=E+Leslie&amp;author=B+Giles-Corti&amp;author=N+Owen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=62&amp;pages=e9&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B119\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Takano</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Nakamura</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Watanabe</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">119.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">56</span>:<span class=\"reference-fpage\">913–</span><span class=\"reference-lpage\">18</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&amp;author=T+Takano&amp;author=K+Nakamura&amp;author=M+Watanabe&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=56&amp;pages=913-18&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B120\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tallis</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Sinnett</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">120.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">38</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&amp;author=M+Tallis&amp;author=G+Taylor&amp;author=D+Sinnett&amp;author=P+Freer-Smith&amp;journal=Landsc.+Urban+Plann.&amp;volume=103&amp;pages=129-38&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B121\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>. <span class=\"citation-label\">121.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Children with attention deficits concentrate better after walk in the park. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Atten. Disord.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">402–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;journal=J.+Atten.+Disord.&amp;volume=12&amp;pages=402-9&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B122\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">122.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Views of nature and self-discipline: evidence from inner city children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">49–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=J.+Environ.+Psychol.&amp;volume=22&amp;pages=49-63&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B123\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Thompson Coon</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Boddy</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Stein</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Whear</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Depledge</span> <span class=\"reference-given-names\">MH</span>. <span class=\"citation-label\">123.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">1761–</span><span class=\"reference-lpage\">72</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&amp;author=J+Thompson+Coon&amp;author=K+Boddy&amp;author=K+Stein&amp;author=R+Whear&amp;author=J+Barton&amp;author=MH+Depledge&amp;journal=Environ.+Sci.+Technol.&amp;volume=45&amp;pages=1761-72&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B124\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tsunetsugu</span> <span class=\"reference-given-names\">Y</span>, <span class=\"reference-surname\">Park</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Miyazaki</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">124.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Prevent. Med.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">27–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&amp;author=Y+Tsunetsugu&amp;author=B+Park&amp;author=Y+Miyazaki&amp;journal=Environ.+Health+Prevent.+Med.&amp;volume=15&amp;pages=27-37&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B125\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">125.\\u2002</span> <span class=\"reference-year\">1979</span>. <span class=\"reference-article-title\"> Visual landscapes and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Res.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&amp;author=RS+Ulrich&amp;journal=Landsc.+Res.&amp;volume=4&amp;pages=17-23&amp;publication_year=1979&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B126\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">126.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Aesthetic and affective response to natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Human Behaviour and Environment: Advances in Theory and Research.</span></span> Volume\\n<span class=\"reference-volume\">6</span> <span class=\"reference-source\"><span class=\"reference-italic\">Behaviour and the Natural Environment</span></span>, ed. I\\nAltman, JF Wohlwill <span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">125</span> New York: Plenum\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&amp;author=RS+Ulrich&amp;journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&amp;pages=85-125&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B127\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Simons</span> <span class=\"reference-given-names\">RF</span>, <span class=\"reference-surname\">Losito</span> <span class=\"reference-given-names\">BD</span>, <span class=\"reference-surname\">Fiorito</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Miles</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Zelson</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">127.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Stress recovery during exposure to natural and urban environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">201–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&amp;author=RS+Ulrich&amp;author=RF+Simons&amp;author=BD+Losito&amp;author=E+Fiorito&amp;author=MA+Miles&amp;author=M+Zelson&amp;journal=J.+Environ.+Psychol.&amp;volume=11&amp;pages=201-30&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B128\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Cauwenberg</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">De Bourdeaudhuij</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">De Meester</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Van Dyck</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Salmon</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">128.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Relationship between the physical environment and physical activity in older adults: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">458–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&amp;author=J+Van+Cauwenberg&amp;author=I+De+Bourdeaudhuij&amp;author=F+De+Meester&amp;author=D+Van+Dyck&amp;author=J+Salmon&amp;journal=Health+Place&amp;volume=17&amp;pages=458-69&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B129\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Custers</span> <span class=\"reference-given-names\">MHG</span>. <span class=\"citation-label\">129.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Gardening promotes neuroendocrine and affective restoration from stress. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Health Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&amp;author=AE+Van+den+Berg&amp;author=MHG+Custers&amp;journal=J.+Health+Psychol.&amp;volume=16&amp;pages=3-11&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B130\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">130.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Green space as a buffer between stressful life events and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">70</span>:<span class=\"reference-fpage\">1203–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&amp;author=AE+Van+den+Berg&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Soc.+Sci.+Med.&amp;volume=70&amp;pages=1203-10&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B131\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>. <span class=\"citation-label\">131.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health</span></span> <span class=\"reference-volume\">9</span>:<span class=\"reference-fpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&amp;author=AE+Van+den+Berg&amp;author=M+van+Winsum-Westra&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;journal=Environ.+Health&amp;volume=9&amp;pages=74&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B132\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Herzele</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Podesta</span> <span class=\"reference-given-names\">MTC</span>, <span class=\"reference-surname\">van Zon</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">132.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: the challenge of linking practice and research. </span> See Ref. 98 <span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B133\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Montarzino</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">133.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> The childhood factor: adult visits to green places and the significance of childhood experience. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">111–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&amp;author=C+Ward+Thompson&amp;author=P+Aspinall&amp;author=A+Montarzino&amp;journal=Environ.+Behav.&amp;volume=40&amp;pages=111-43&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B134\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roe</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Clow</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Miller</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">134.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">105</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">29</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&amp;author=C+Ward+Thompson&amp;author=J+Roe&amp;author=P+Aspinall&amp;author=R+Mitchell&amp;author=A+Clow&amp;author=D+Miller&amp;journal=Landsc.+Urban+Plann.&amp;volume=105&amp;pages=221-29&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B135\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">135.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Nearby nature—a buffer of life stress among rural children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">311–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&amp;author=NM+Wells&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=35&amp;pages=311-30&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B136\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Lekies</span> <span class=\"reference-given-names\">KS</span>. <span class=\"citation-label\">136.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Nature and the life course: pathways from childhood nature experiences to adult environmentalism. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Child. Youth Environ.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&amp;author=NM+Wells&amp;author=KS+Lekies&amp;journal=Child.+Youth+Environ.&amp;volume=16&amp;pages=1-24&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B137\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Whitelaw</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">137.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Crit. Public Health</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&amp;author=S+Whitelaw&amp;journal=Crit.+Public+Health&amp;volume=22&amp;pages=427-40&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B138\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">138.\\u2002</span><span class=\"reference-collab\">WHO (World Health Organ.)</span> <span class=\"reference-year\">1946</span>. <span class=\"reference-article-title\"> <span class=\"reference-italic\">Preamble to the Constitution of the World Health Organization</span> as adopted by the International Health Conference. </span> New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&amp;publication_year=1946&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B139\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wilson</span> <span class=\"reference-given-names\">SJ</span>, <span class=\"reference-surname\">Lipsey</span> <span class=\"reference-given-names\">MW</span>. <span class=\"citation-label\">139.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eval. Program Plann.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&amp;author=SJ+Wilson&amp;author=MW+Lipsey&amp;journal=Eval.+Program+Plann.&amp;volume=23&amp;pages=1-12&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B140\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Yoo</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Kwon</span> <span class=\"reference-given-names\">YJ</span>, <span class=\"reference-surname\">Son</span> <span class=\"reference-given-names\">KC</span>, <span class=\"reference-surname\">Kays</span> <span class=\"reference-given-names\">SJ</span>. <span class=\"citation-label\">140.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Am. Soc. Hort. Sci.</span></span> <span class=\"reference-volume\">131</span>:<span class=\"reference-fpage\">452–</span><span class=\"reference-lpage\">58</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&amp;author=MH+Yoo&amp;author=YJ+Kwon&amp;author=KC+Son&amp;author=SJ+Kays&amp;journal=J.+Am.+Soc.+Hort.+Sci.&amp;volume=131&amp;pages=452-58&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B141\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Zick</span> <span class=\"reference-given-names\">CD</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">KR</span>, <span class=\"reference-surname\">Kowaleski-Jones</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Uno</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Merrill</span> <span class=\"reference-given-names\">BJ</span>. <span class=\"citation-label\">141.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Harvesting more than vegetables: the potential weight control benefits of community gardening. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">e1–</span><span class=\"reference-lpage\">6</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&amp;author=CD+Zick&amp;author=KR+Smith&amp;author=L+Kowaleski-Jones&amp;author=C+Uno&amp;author=BJ+Merrill&amp;journal=Am.+J.+Public+Health&amp;volume=103&amp;pages=e1-6&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li></ol>\\n</div>\\n</div>\\n<div id=\"cited\" class=\"citations hidden-js-div tabbedsection tab-pane\">\\n<div class=\"hiddenjsdiv\" id=\"itemIdForCitations\" data-doi=\"10.1146/annurev-publhealth-032013-182443\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<img class=\"citingArticlesLoading\" src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<div id=\"citationContent\"></div>\\n</div>\\n<div class=\"hiddenjsdiv itemmetadata\">\\n<div class=\"metadata_title\">Nature and Health</div>\\n<div class=\"metadata_citation\">\\n<span>Annual Review of Public Health <span class=\"citationvolume\">35</span></span><span>, 207</span><span> (2014)</span><span>; <a href=\"https://doi.org/10.1146/annurev-publhealth-032013-182443\" rel=\"external\" class=\"externallink\" title=\"undefined - opens in new window/tab\" target=\"_blank\">https://doi.org/10.1146/annurev-publhealth-032013-182443</a></span>\\n</div>\\n<div class=\"metadata_itemWebId\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n</div>\\n<div id=\"dataandmedia\" class=\"dataandmedia tabbedsection hidden-js-div tab-pane\" data-fulltexturl=\"\" data-fulltextexpandlinktext=\"Toggle display:\" data-hideinlinetablesbydefault=\"false\">\\n\\n\\n\\n<div id=\"hiddenDataMediaWebid\" class=\"hiddenjsdiv\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"itemDataMediaLoading\">\\n<img src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<p>Data &amp; Media loading...</p>\\n</div>\\n<div id=\"datamediacontent\"></div>\\n</div>\\n<div id=\"supplementary_data\" class=\"supplementary-container tabbedsection hidden-js-div tab-pane\">\\n<div id=\"supplementary_data_contents\" data-statslogurl=\"/statslogredirect\">\\n<h4 id=\"supp_title_1\" class=\"supplementary-item-heading-show\" style=\"padding-top:10px;\">Supplementary Data</h4>\\n<ul class=\"articleMetadata list-unstyled col-sm-8 pull-left\" style=\"margin-bottom:0;padding-bottom:0;\">\\n<li style=\"margin-bottom:0;\">\\n<p></p><p>Download <a href=\"https://www.annualreviews.org/deliver/fulltext/publhealth/35/1/pu35_hartig_supmat.pdf?itemId=/content/suppdata/10.1146/annurev-publhealth-032013-182443/1\"><strong>Supplemental References</strong></a> (PDF)</p><p><strong>Audio:</strong> Terry Hartig, Richard Mitchell, Sjerp de Vries, and Howard Frumkin discuss the current state of research on the impact that contact with nature has on individual and population health.</p><p></p><div frameborder=\"0\" src=\"https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/149328804&amp;color=0058a0&amp;auto_play=false&amp;hide_related=false&amp;show_artwork=true\" data-original-tag=\"iframe\">\\n  \\n\\n  \\n  <link rel=\"dns-prefetch\" href=\"https://api-widget.soundcloud.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://sb.scorecardresearch.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://api.soundcloud.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://va.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i1.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i2.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i3.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" 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list-unstyled\">\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052020-110732\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-052020-110732\" dir=\"auto\" class=\"\"> \\nSocial Connection as a Public Health Issue: The Evidence and a Systemic Framework for Prioritizing the “Social” in Social Determinants of Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\">Julianne Holt-Lunstad</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">193–213\\n(21)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102529\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-090419-102529\" dir=\"auto\" class=\"\"> \\nUnderstanding and Responding to Health Literacy as a Social Determinant of Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Don Nutbeam</span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\nJane E. Lloyd</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">159–173\\n(15)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-012420-105026\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-012420-105026\" dir=\"auto\" class=\"\"> \\nExtreme Weather and Climate Change: Population Health and Health System Implications\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Kristie L. 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Reid</span><span class=\"author-list__item \">,\\nShubhayu Saha</span><span class=\"author-list__item \">,\\nJune Spector</span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\nPeter Berry</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">293–315\\n(23)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052620-103528\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-052620-103528\" dir=\"auto\" class=\"\"> \\nEliminating Explicit and Implicit Biases in Health Care: Evidence and Research Needs\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Monica B. 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Chin</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">477–501\\n(25)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102409\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-090419-102409\" dir=\"auto\" class=\"\"> \\nClimate Change Disinformation and How to Combat It\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\">Stephan Lewandowsky</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">1–21\\n(21)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li>\\n</li>\\n</ul>\\n<form class=\"ahahTocArticles\">\\n\\n\\n\\n</form>\\n</div> \\n\\n<div id=\"hiddenmostviewedparent\" class=\"hiddenjsdiv hidden-js-div\">content/journals/publhealth</div>\\n<div id=\"hiddenmostviewedparenttype\" class=\"hiddenjsdiv hidden-js-div\">Journal</div>\\n<div id=\"hiddenmostviewednumber\" class=\"hiddenjsdiv hidden-js-div\">5</div>\\n<div id=\"hiddenmostviewednumbershown\" class=\"hiddenjsdiv hidden-js-div\">3</div>\\n<div id=\"hiddenmostviewedemptymessage\" class=\"hiddenjsdiv hidden-js-div\">false</div>\\n<div id=\"hiddenmostviewedlanguage\" class=\"hiddenjsdiv hidden-js-div\">en</div>\\n\\n</div>\\n</div>\\n<div class=\"mostcitedcontainer panel panel-default \">\\n<div class=\"panel-heading\">\\n<h2 class=\"panel-title\">\\nMost Cited\\n<span class=\"rssicon\">\\n<a href=\"https://www.annualreviews.org/rss/content/journals/publhealth/mostcitedarticles?fmt=rss\" class=\"rssiconheader rssFeed externallink\" title=\"Subscribe to most Cited RSS feed\">\\n<i class=\"fa fa-rss\"></i>\\n<span class=\"sr-only\">Most Cited RSS feed</span>\\n</a>\\n</span>\\n</h2>\\n</div>\\n<div class=\"panel-body\">\\n<div id=\"mostcited\">\\n<ul class=\"separated-list list-unstyled\">\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.19.1.173_1\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.19.1.173\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.19.1.173\" dir=\"auto\" class=\"\"> \\nREVIEW OF COMMUNITY-BASED RESEARCH: Assessing Partnership Approaches to Improve Public Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Barbara+A.+Israel&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Barbara A. Israel</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Amy+J.+Schulz&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Amy J. Schulz</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Edith+A.+Parker&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Edith A. Parker</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Adam+B.+Becker&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Adam B. Becker</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 19 \\n(1998), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">173–202\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-032013-182443_2\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-032013-182443\" dir=\"auto\" class=\"\"> \\nNature and Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Terry+Hartig&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Terry Hartig</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Richard+Mitchell&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Richard Mitchell</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Sjerp+de+Vries&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Sjerp de Vries</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Howard+Frumkin&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Howard Frumkin</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 35 \\n(2014), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">207–228\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031912-114409_3\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031912-114409\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031912-114409\" dir=\"auto\" class=\"\"> \\nThe Epidemiology of Depression Across Cultures\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Ronald+C.+Kessler&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Ronald C. Kessler</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Evelyn+J.+Bromet&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Evelyn J. Bromet</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 34 \\n(2013), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">119–138\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-040218-043750_4\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-040218-043750\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-040218-043750\" dir=\"auto\" class=\"\"> \\nRacism and Health: Evidence and Needed Research\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=David+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David R. Williams</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Jourdyn+A.+Lawrence&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Jourdyn A. Lawrence</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Brigette+A.+Davis&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Brigette A. Davis</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 40 \\n(2019), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">105–125\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.18.1.341_5\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.18.1.341\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.18.1.341\" dir=\"auto\" class=\"\"> \\nMeasuring Social Class in US Public Health Research: Concepts, Methodologies, and Guidelines\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=N.+Krieger&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">N. Krieger</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=D.+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">D. R. Williams</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=N.+E.+Moss&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">N. E. Moss</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 18 \\n(1997), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">341–378\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031210-101218_6\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031210-101218\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031210-101218\" dir=\"auto\" class=\"\"> \\nThe Social Determinants of Health: Coming of Age\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Paula+Braveman&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Paula Braveman</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Susan+Egerter&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Susan Egerter</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=David+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David R. Williams</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 32 \\n(2011), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">381–398\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.012809.103604_7\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.012809.103604\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.012809.103604\" dir=\"auto\" class=\"\"> \\nThe Role of Behavioral Science Theory in Development and Implementation of Public Health Interventions\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Karen+Glanz&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Karen Glanz</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Donald+B.+Bishop&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Donald B. Bishop</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 31 \\n(2010), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">399–418\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev.pu.15.050194.000543_8\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.pu.15.050194.000543\" data-itemid=\"/content/journals/10.1146/annurev.pu.15.050194.000543\" dir=\"auto\" class=\"\"> \\nAcute Respiratory Effects of Particulate Air Pollution\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=D.+W.+Dockery&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">D. W. Dockery</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=C.+A.+Pope&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">C. A. Pope</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 15 \\n(1994), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">107–132\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-032315-021402_9\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032315-021402\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-032315-021402\" dir=\"auto\" class=\"\"> \\nMediation Analysis: A Practitioner\\'s Guide\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\"><a href=\"https://www.annualreviews.org/search?value1=Tyler+J.+VanderWeele&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Tyler J. VanderWeele</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 37 \\n(2016), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">17–32\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031914-122957_10\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031914-122957\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031914-122957\" dir=\"auto\" class=\"\"> \\nThe Prescription Opioid and Heroin Crisis: A Public Health Approach to an Epidemic of Addiction\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Andrew+Kolodny&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Andrew Kolodny</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=David+T.+Courtwright&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David T. 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Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum]', 'title': 'Nature and Health | Annual Reviews', 'citation_publisher': 'Annual Reviews', 'dc.publisher': 'Annual Reviews', 'citation_firstpage': '207', 'dc.title': 'Nature and Health', 'dcDate': '2014/03/18', 'citation_lastpage': '228', 'viewport': ['width=device-width, initial-scale=1', 'width=device-width,minimum-scale=1,maximum-scale=1,user-scalable=no'], 'twitter:card': 'summary_large_image', 'citation_year': '2014', 'author': 'Terry Hartig|Richard Mitchell|Sjerp de Vries|Howard Frumkin', 'dc.creator': ['Terry Hartig', 'Richard Mitchell', 'Sjerp de Vries', 'Howard Frumkin'], 'citation_doi': '10.1146/annurev-publhealth-032013-182443', 'citation_issue': 'Volume 35, 2014', 'citation_title': 'Nature and Health', 'citation_author': ['Terry Hartig', 'Richard Mitchell', 'Sjerp de Vries', 'Howard Frumkin'], 'citation_abstract': 'Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum]', 'stats-meta': 'stats', 'citation_date': '2014/03/18', 'dc.date': '2014/03/18', 'language': 'en', 'description': 'Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum]', 'favicon': 'https://www.annualreviews.org/upload/favicon.ico', 'dc.identifier': 'doi:10.1146/annurev-publhealth-032013-182443', 'shareaholic:site_id': '5a02bf1fca9627aa4ef195830cf8e332', 'citation_author_institution': ['1Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: terry.hartig@ibf.uu.se', '2Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: Richard.Mitchell@glasgow.ac.uk', '3Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: sjerp.devries@wur.nl', '4School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: frumkin@uw.edu'], 'citation_publication_date': '2014/03/18', 'citation_journal_title': 'Annual Review of Public Health', 'citation_volume': '35', 'citation_abstract_html_url': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443', 'citation_online_date': '2014/03/18', 'dcType': 'Text', 'robots': ['NOODP,noarchive', 'noindex, follow'], 'scrapeId': 'a9acce52-ba20-4738-8bc2-c74262a3f388', 'sourceURL': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443', 'url': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443', 'statusCode': 200, 'contentType': 'text/html;charset=UTF-8', 'proxyUsed': 'basic', 'creditsUsed': 1}, actions=None, title=None, description=None, changeTracking=None), FirecrawlDocument(url=None, markdown='RT Journal Article\\nSR Electronic(1)\\nA1 Hartig, Terry\\nA1 Mitchell, Richard\\nA1 de Vries, Sjerp\\nA1 Frumkin, HowardYR 2014\\nT1 Nature and Health\\nJF Annual Review of Public Health,\\nVO 35\\nIS Volume 35, 2014\\nSP 207\\nOP 228\\nDO https://doi.org/10.1146/annurev-publhealth-032013-182443\\nPB Annual Reviews,\\nSN 1545-2093,\\nAB Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[Erratum\\\\],\\nUL https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443', html='<html><body>RT Journal Article\\nSR Electronic(1)\\nA1 Hartig, Terry\\nA1 Mitchell, Richard\\nA1 de Vries, Sjerp\\nA1 Frumkin, HowardYR 2014\\nT1 Nature and Health\\nJF Annual Review of Public Health,\\nVO 35\\nIS Volume 35, 2014\\nSP 207\\nOP 228\\nDO https://doi.org/10.1146/annurev-publhealth-032013-182443\\nPB  Annual Reviews,\\nSN  1545-2093,\\nAB  Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum],\\nUL https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n</body></html>', rawHtml=None, links=None, extract=None, json=None, screenshot=None, metadata={'scrapeId': 'b2d7c647-bd52-46e7-b696-c23869eada9f', 'sourceURL': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443/cite/refworks', 'url': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443/cite/refworks', 'statusCode': 200, 'contentType': 'application/x-refworks;charset=UTF-8', 'proxyUsed': 'basic', 'creditsUsed': 1}, actions=None, title=None, description=None, changeTracking=None), FirecrawlDocument(url=None, markdown='@article{annurev:/content/journals/10.1146/annurev-publhealth-032013-182443,\\n author = \"Hartig, Terry and Mitchell, Richard and de Vries, Sjerp and Frumkin, Howard\",\\n title = \"Nature and Health\",\\n journal= \"Annual Review of Public Health\",\\n year = \"2014\",\\n volume = \"35\",\\n number = \"Volume 35, 2014\",\\n pages = \"207-228\",\\n doi = \"https://doi.org/10.1146/annurev-publhealth-032013-182443\",\\n url = \"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\",\\n publisher = \"Annual Reviews\",\\n issn = \"1545-2093\",\\n type = \"Journal Article\",\\n keywords = \"parks\",\\n keywords = \"greenspace\",\\n keywords = \"community gardens\",\\n keywords = \"green space\",\\n keywords = \"landscape\",\\n keywords = \"urban forests\",\\n keywords = \"green infrastructure\",\\n abstract = \"Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[Erratum\\\\]\",\\n }', html='<html><body>@article{annurev:/content/journals/10.1146/annurev-publhealth-032013-182443,\\n   author = \"Hartig, Terry and Mitchell, Richard and de Vries, Sjerp and Frumkin, Howard\",\\n   title = \"Nature and Health\", \\n   journal= \"Annual Review of Public Health\",\\n   year = \"2014\",\\n   volume = \"35\",\\n   number = \"Volume 35, 2014\",\\n   pages = \"207-228\",\\n   doi = \"https://doi.org/10.1146/annurev-publhealth-032013-182443\",\\n   url = \"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\",\\n   publisher = \"Annual Reviews\",\\n   issn = \"1545-2093\",\\n   type = \"Journal Article\",\\n   keywords = \"parks\",\\n   keywords = \"greenspace\",\\n   keywords = \"community gardens\",\\n   keywords = \"green space\",\\n   keywords = \"landscape\",\\n   keywords = \"urban forests\",\\n   keywords = \"green infrastructure\",\\n   abstract = \"Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum]\",\\n  }\\n\\n</body></html>', rawHtml=None, links=None, extract=None, json=None, screenshot=None, metadata={'scrapeId': '0d5ac5fb-4087-4a97-b528-f49522ccb0fa', 'sourceURL': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443/cite/bibtex', 'url': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443/cite/bibtex', 'statusCode': 200, 'contentType': 'application/x-bibtex;charset=UTF-8', 'proxyUsed': 'basic', 'creditsUsed': 1}, actions=None, title=None, description=None, changeTracking=None), FirecrawlDocument(url=None, markdown='%0 Journal Article\\n%A Hartig, Terry\\n%A Mitchell, Richard\\n%A de Vries, Sjerp\\n%A Frumkin, Howard\\n%T Nature and Health\\n%D 2014\\n%J Annual Review of Public Health,\\n%V 35\\n%N Volume 35, 2014\\n%P 207-228\\n%@ 1545-2093\\n%R https://doi.org/10.1146/annurev-publhealth-032013-182443\\n%K parks\\n%K greenspace\\n%K community gardens\\n%K green space\\n%K landscape\\n%K urban forests\\n%K green infrastructure\\n%I Annual Reviews,\\n%X Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[Erratum\\\\]\\n%U https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443', html='<html><body>%0 Journal Article\\n%A Hartig, Terry\\n%A Mitchell, Richard\\n%A de Vries, Sjerp\\n%A Frumkin, Howard\\n%T Nature and Health\\n%D 2014\\n%J Annual Review of Public Health,\\n%V 35\\n%N Volume 35, 2014\\n%P 207-228\\n%@ 1545-2093\\n%R https://doi.org/10.1146/annurev-publhealth-032013-182443\\n%K parks\\n%K greenspace\\n%K community gardens\\n%K green space\\n%K landscape\\n%K urban forests\\n%K green infrastructure\\n%I Annual Reviews,\\n%X Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. 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Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. \\\\[Erratum\\\\],\\n4099- https://www.annualreviews.org\\n4100- https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443', html='<html><body>PT  - Journal Article\\nAU  - Hartig, Terry\\nAU  - Mitchell, Richard\\nAU  - de Vries, Sjerp\\nAU  - Frumkin, Howard\\nDP  - 2014\\nTI  - Nature and Health\\nTA  - Annual Review of Public Health,\\nVI  - 35\\nIP  - Volume 35, 2014\\nPG  - 207-228\\nAID - 10.1146/annurev-publhealth-032013-182443\\nSO  - Annual Review of Public Health 2014;35(1):207-228\\nAB  - Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [Erratum],\\n4099- https://www.annualreviews.org\\n4100- https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\\n\\n</body></html>', rawHtml=None, links=None, extract=None, json=None, screenshot=None, metadata={'scrapeId': '4ad38093-c582-4ea1-94bc-5a182d807b68', 'sourceURL': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443/cite/medline', 'url': 'https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443/cite/medline', 'statusCode': 200, 'contentType': 'application/nbib;charset=UTF-8', 'proxyUsed': 'basic', 'creditsUsed': 1}, actions=None, title=None, description=None, changeTracking=None)]\n"
     ]
    }
   ],
   "source": [
    "from firecrawl import FirecrawlApp, ScrapeOptions\n",
    "\n",
    "# Crawl a website:\n",
    "crawl_result = app.crawl_url(\n",
    "  url, \n",
    "  limit=10, \n",
    "  scrape_options=ScrapeOptions(formats=['markdown', 'html']),\n",
    ")\n",
    "print(crawl_result)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 75,
   "id": "0aaaa34b",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'<!DOCTYPE html><!--[if lt IE 7]> <html class=\"no-js lt-ie9 lt-ie8 lt-ie7\" id=\"mainTemplate\"> <![endif]--><!--[if IE 7]> <html class=\"no-js lt-ie9 lt-ie8\" id=\"mainTemplate\"> <![endif]--><!--[if IE 8]> <html class=\"no-js lt-ie9\" id=\"mainTemplate\"> <![endif]--><!--[if gt IE 8]><!--><html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\" class=\" pb-page js no-touch cssanimations csstransitions\" id=\"mainTemplate\" style=\"\"><!--<![endif]-->\\n<body id=\"article\" class=\"body is-sticky-enabled is-altlayout-enabled is-hybrid-skin-template is-enabled-focus-state\" data-instanceprefix=\"instance\" data-elements-to-offset-scroll-when-fixed=\".main-header-container, .article-navigation-bar\" style=\"margin:0\"><div id=\"MathJax_Message\" style=\"display: none;\"></div><div id=\"cookie-bar\" class=\"fixed non-printed-section\"><p>We use <a href=\"https://www.annualreviews.org/cookie-info\">cookies</a> to track usage and preferences.<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\" class=\"cb-enable\">I Understand</a></p></div>\\n\\n<!-- Google Tag Manager-->\\n\\n\\n<!-- End Google Tag Manager-->\\n<div id=\"hiddenContext\" class=\"hidden-js-div\" data-cookiemessage=\"We use <a href=&quot;/cookie-info&quot;>cookies</a> to track usage and preferences.\" data-cookieaccepttext=\"I Understand\" data-cookiedeclinetext=\"Disable Cookies\" data-cookiepolicytext=\"Privacy Policy\"></div>\\n<div id=\"skinPublishingDates\" class=\"hidden-js-div\">1932</div>\\n<div id=\"mm-0\" class=\"mm-page mm-slideout\">\\n<div id=\"wrapper\" class=\"siteWrapper\">\\n\\n<div id=\"bellowheadercontainer\" class=\"container no-padding container--jc__publhealth\">\\n<main class=\"col-xs-12 col-sm-12 col-md-9 content main-content-container js-main-content-container\" id=\"main-content-container\">\\n\\n\\n<div class=\"clearfix\"></div>\\n<div class=\"article-cover\">\\n<!-- If we have come from a search page, a list of search articles maybe present in the session and should be used to provide\\nthe listItems for the next and previous bttns -->\\n<div class=\"title-box item-meta-data\">\\n<div class=\"journal-volume-issue-container item-meta-data__journal-volume-issue-container\">\\n<h3 title=\"Annual Review of Public Health\" class=\" item-meta-data__journal container__journal-title\">\\n<a href=\"https://www.annualreviews.org/content/journals/publhealth\" class=\"item-meta-data__journal-title-link\">\\nAnnual Review of Public Health\\n</a>\\n</h3>\\n<a href=\"https://www.annualreviews.org/content/journals/publhealth/35/1\" title=\"\" class=\"item-meta-data__issue-title-link\">\\n<h4 class=\"item-meta-data__journal-issue\" title=\"Volume 35, Issue 1\">Volume 35, 2014</h4>\\n</a>\\n</div>\\n<div class=\"hidden-xs article-access-icon-and-access item-meta-data__accreditation\">\\n<h4 class=\"article-type item-meta-data__type\">Review Article</h4>\\n<h4 class=\"article-access item-meta-data__oa\"> \\n<span class=\"accesstext\">Free</span>\\n</h4>\\n</div>\\n<h1 class=\"item-meta-data__item-title\">\\nNature and Health\\n</h1>\\n<ul class=\"list-unstyled article-meta-data item-meta-data__article\"> \\n<li class=\"data-author article-meta-data__item item-meta-data__author\">\\n<span class=\"meta-value authors\"><a href=\"https://www.annualreviews.org/search?value1=Terry+Hartig&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Terry Hartig</a><sup>1</sup>, <a href=\"https://www.annualreviews.org/search?value1=Richard+Mitchell&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Richard Mitchell</a><sup>2</sup>, <a href=\"https://www.annualreviews.org/search?value1=Sjerp+de+Vries&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Sjerp de Vries</a><sup>3</sup>&nbsp;and <a href=\"https://www.annualreviews.org/search?value1=Howard+Frumkin&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Howard Frumkin</a><sup>4</sup></span>\\n</li>\\n<li class=\"data-author article-meta-data__item item-meta-data__author-affiliations\">\\n<div class=\"showhide spacing\">\\n<a id=\"showHideAffiliation\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" role=\"button\" class=\"std-display viewHideAffiliation js-showhide\" aria-expanded=\"false\" aria-controls=\"showHideAffiliationContent\">\\n<span class=\"js-plus\">\\n<i class=\"fa fa-plus-circle\"></i>\\n<span class=\"underline\">\\nView Affiliations\\n</span>\\n</span>\\n<span class=\"js-minus minus\">\\n<i class=\"fa fa-minus-circle\"></i>\\n<span class=\"underline\">\\nHide Affiliations\\n</span>\\n</span>\\n</a>\\n<div id=\"showHideAffiliationContent\" class=\"js-description minus\">\\n<div class=\"affiliation-details\">\\n<!-- -->\\n<span class=\"meta-value affiliations\">\\n<sup>1</sup>Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: <a href=\"mailto:terry.hartig@ibf.uu.se\">terry.hartig@ibf.uu.se</a>\\n</span>\\n<!-- , -->\\n<span class=\"meta-value affiliations\">\\n<sup>2</sup>Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: <a href=\"mailto:Richard.Mitchell@glasgow.ac.uk\">Richard.Mitchell@glasgow.ac.uk</a>\\n</span>\\n<!-- , -->\\n<span class=\"meta-value affiliations\">\\n<sup>3</sup>Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: <a href=\"mailto:sjerp.devries@wur.nl\">sjerp.devries@wur.nl</a>\\n</span>\\n<!-- and -->\\n<span class=\"meta-value affiliations\">\\n<sup>4</sup>School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: <a href=\"mailto:frumkin@uw.edu\">frumkin@uw.edu</a>\\n</span>\\n</div>\\n<div class=\"institutionLinks\">\\n<div class=\"instList\">\\n</div>\\n</div>\\n</div>\\n</div>\\n</li>\\n<li class=\"article-meta-data__item item-meta-data__date-and-doi\">\\n<span class=\"meta-container\">\\nVol. 35:207-228\\n(Volume publication date March 2014)\\n</span>\\n<a href=\"https://doi.org/10.1146/annurev-publhealth-032013-182443\" class=\"externallink meta-container meta-container__value item-meta-data__doi meta-container--doi hidden-xs\">https://doi.org/10.1146/annurev-publhealth-032013-182443</a>\\n</li>\\n<li>\\nFirst published as a Review in Advance on \\nJanuary 02, 2014\\n</li> \\n<li>\\n<div class=\"copyright-info\" dir=\"auto\">\\n© Annual Reviews\\n</div>\\n</li>\\n</ul>\\n</div>\\n</div>\\n \\n\\n<section id=\"tabbedpages\" class=\"tabs icon-image-content\">\\n<div id=\"abstract_content\" class=\" tab-pane abstract tabbedsection\">\\n<div class=\"articleabstract\">\\n<h3 dir=\"auto\">Abstract</h3>\\n<div dir=\"auto\">\\n<div class=\"description\"><p>Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [<a href=\"http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001\" target=\"xrefwindow\">Erratum</a>]</p></div>\\n</div>\\n</div>\\n<ul class=\"list-inline border-right-list article-dates\">\\n</ul> \\n<div class=\"bottom-side-nav\">\\n<span>\\n<strong dir=\"auto\">\\nKeyword(s):\\n</strong>\\n</span>\\n<a href=\"https://www.annualreviews.org/search?value1=%22community+gardens%22&amp;option1=pub_keyword\" title=\"community gardens\">community gardens</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22green+infrastructure%22&amp;option1=pub_keyword\" title=\"green infrastructure\">green infrastructure</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22green+space%22&amp;option1=pub_keyword\" title=\"green space\">green space</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22greenspace%22&amp;option1=pub_keyword\" title=\"greenspace\">greenspace</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22landscape%22&amp;option1=pub_keyword\" title=\"landscape\">landscape</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22parks%22&amp;option1=pub_keyword\" title=\"parks\">parks</a>,&nbsp;<a href=\"https://www.annualreviews.org/search?value1=%22urban+forests%22&amp;option1=pub_keyword\" title=\"urban forests\">urban forests</a>\\n</div>\\n<div class=\"metaDataBlock\">\\n<div class=\"metaDataBlock__Item\">\\n<h3 class=\"metaDataBlock__title h5\">\\nAssociated Article\\n</h3>\\n<div class=\"consanguinityBlurbContainer\">\\nThere are media items related to this article:\\n</div>\\n<a href=\"https://www.annualreviews.org/content/multimedia/10.1146/do.multimedia.2014.05.13.269\">Nature and Health</a>\\n</div>\\n<div class=\"metaDataBlock__Item\">\\n<h3 class=\"metaDataBlock__title h5\">\\nErratum\\n</h3>\\n<div class=\"consanguinityBlurbContainer\">\\nAn erratum has been published for this article:\\n</div>\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-pu-35-102115-200001\">Nature and Health</a>\\n</div>\\n</div>\\n</div>\\n<div id=\"metrics_content\" class=\"tab-pane metrics hidden-js-div tabbedsection\">\\n<div class=\"itemMetricsLoading\">\\n<img src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<p>Article metrics loading...</p>\\n</div>\\n<div class=\"metricsContainer retrieveMetrics\">\\n<div class=\"hiddenjsdiv metricsItemId\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"hiddenjsdiv metricsPubDate\">2014-03-18</div>\\n<div class=\"hiddenjsdiv metricsEndDate\">2025-07-29</div>\\n<div class=\"hiddenjsdiv\" id=\"graph1Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"hiddenjsdiv\" id=\"graph2Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"hiddenjsdiv \" id=\"graph3Settings\" data-nodata=\"No metrics data to plot.\">\\n</div>\\n<div class=\"metricsDetails\">\\n</div>\\n</div>\\n</div>\\n<div id=\"html_fulltext\" class=\"htmlfulltext hidden-js-div tabbedsection tab-pane active\">\\n<form name=\"pptForm\" class=\"hidden pptForm\" id=\"pptDwnld\" action=\"https://www.annualreviews.org/contentexport/powerpoint/powerpoint.action\" method=\"POST\">\\n\\n\\n\\n\\n\\n\\n\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"pptDownload\">Download as PowerPoint</a>\\n</form>\\n\\n<span class=\"showPPT\" data-showppt=\"true\"></span>\\n<div id=\"itemFullTextId\" class=\"itemFullTextHtml\" data-fulltexturl=\"/deliver/fulltext/publhealth/35/1/annurev-publhealth-032013-182443.html?itemId=/content/journals/10.1146/annurev-publhealth-032013-182443&amp;mimeType=html&amp;fmt=ahah\" data-fulltextunavailablemsg=\"<span dir=&quot;auto&quot;>The full text of this item is not currently available.</span>\" data-fulltextexpandlinktext=\"Toggle display:\" data-hideinlinetablesbydefault=\"false\" data-showreferenceoverlaypopup=\"true\"><!--?xml version=\"1.0\" encoding=\"UTF-8\"?--><div xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" id=\"html-body\">\\n\\n<div id=\"article-level-0-front-and-body\" class=\"article-level-0-front-and-body\">\\n<ul xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"flat fm article-header-metadata\"><li></li><li>ISSN: <span class=\"issn\">0163-7525</span>, Online ISSN: <span class=\"oissn\">1545-2093</span></li><li>DOI: <span class=\"doi\">http://dx.doi.org/10.1146/annurev-publhealth-032013-182443</span></li><li>Volume <span class=\"volume\">35</span>, Issue <span class=\"issue\">1</span>, pages <span class=\"first-page\">207</span>-<span class=\"last-page\">228</span></li><li><span class=\"copyright\">Copyright © 2014 by Annual Reviews. All rights reserved</span>&nbsp;</li></ul><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection article-title-and-authors\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"top-1\" id=\"top-1\">\\n                                &nbsp;\\n                            </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><h1><span class=\"article-title\">Nature and Health</span></h1><ul class=\"flat authors\">Terry Hartig<span class=\"au-label\">\\n                  1\\n               </span>; Richard Mitchell<span class=\"au-label\">\\n                  2\\n               </span>; Sjerp de Vries<span class=\"au-label\">\\n                  3\\n               </span>; Howard Frumkin<span class=\"au-label\">\\n                  4\\n               </span></ul><ul class=\"flat affiliations\">\\n               <sup xmlns:f=\"http://www.example.org/functions\">1</sup>Institute for Housing and Urban Research, Uppsala University, SE-75120 Uppsala, Sweden; email: <a href=\"mailto:terry.hartig@ibf.uu.se\">terry.hartig@ibf.uu.se</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">2</sup>Centre for Research on Environment, Society and Health, Institute of Health and Wellbeing, University of Glasgow, Glasgow G20 0TY, United Kingdom; email: <a href=\"mailto:Richard.Mitchell@glasgow.ac.uk\">Richard.Mitchell@glasgow.ac.uk</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">3</sup>Alterra/Cultural Geography, Wageningen University and Research Center, 6700 AA Wageningen, The Netherlands; email: <a href=\"mailto:sjerp.devries@wur.nl\">sjerp.devries@wur.nl</a>\\n             \\n               <sup xmlns:f=\"http://www.example.org/functions\">4</sup>School of Public Health, University of Washington, Seattle, Washington 98195, USA; email: <a href=\"mailto:frumkin@uw.edu\">frumkin@uw.edu</a>\\n            </ul><div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection article-abstract\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"abstract-1\" id=\"abstract-1\">ABSTRACT</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><p>Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [<a target=\"xrefwindow\" href=\"http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001\">Erratum</a>]</p>\\n<span class=\"tl-lowest-section\">Keywords</span><ul class=\"flat keywords\"><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22greenspace%22\">greenspace</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22green%20space%22\">green space</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22green%20infrastructure%22\">green infrastructure</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22landscape%22\">landscape</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22parks%22\">parks</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22urban%20forests%22\">urban forests</a>, </li><li><a href=\"https://www.annualreviews.org/search?option1=pub_keyword&amp;value1=%22community%20gardens%22\">community gardens</a></li></ul><div class=\"clearer\">&nbsp;</div></div>\\n\\n\\n\\n\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"introduction-1\" id=\"introduction-1\">INTRODUCTION</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>The public health field views the natural environment with ambivalence. Infectious agents, extreme weather, and geological events regularly sicken, injure, and kill people, often en masse. Yet, people cannot remain healthy without clean air, clean water, food, and other resources provided as “ecosystem services.” Enormous amounts of research inform these contrasting perspectives, describing how the natural environment harms humans, how health depends on the natural environment, and how human impacts on the natural environment rebound on health.</p>\\n\\n         <p>A theme that has become increasingly distinct over recent years concerns the natural environment, or “nature,” perceived, valued, and engaged with as such, particularly in urbanized societies. This research focuses primarily on benefits of contact with nature. Key segments of this literature are young, but central ideas, such as the link between vegetation and air quality, have ancient provenance in the public health field (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B82\" data-original-title=\"\" title=\"\">82</a></span>). Interventions prompted by those ideas, such as urban parks, have long remained in place, presumably because the public has enjoyed them and believed in their salutary value. The recent research tests such beliefs, and it encourages more nuanced theoretical and practical consideration of nature-health relations.</p>\\n\\n         <p>In this article, we review work done in recent decades to better characterize the health benefits of contact with nature. We do not cover this body of work comprehensively, but instead we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations. We touch on clinically oriented work on contact with nature in therapeutic contexts, but we do not discuss benefits of companion animals, which may be taken as representations of nature (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42\" data-original-title=\"\" title=\"\">42</a></span>; however, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B6\" data-original-title=\"\" title=\"\">6</a></span>). Although the core ideas we discuss have a durable legacy in public health practice, the topic has not previously been the focus of an <span class=\"jp-italic\">Annual Review of Public Health</span> article (however, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B44\" data-original-title=\"\" title=\"\">44</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B80\" data-original-title=\"\" title=\"\">80</a></span>).</p>\\n\\n         <p>Below, we examine the concept of nature, consider reasons for the current expansion of research, and provide a “review of reviews.” We then review research on pathways involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"definingnature-1\" id=\"definingnature-1\">DEFINING “NATURE”</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>In an objective sense, “nature” as used here refers to physical features and processes of nonhuman origin that people ordinarily can perceive, including the “living nature” of flora and fauna, together with still and running water, qualities of air and weather, and the landscapes that comprise these and show the influence of geological processes. As such, “nature” overlaps substantially with “natural environment,” an environment with little or no apparent evidence of human presence or intervention, and the two terms have been used interchangeably.</p>\\n\\n         <p>In practice, however, much research does not accept exclusion of the artificial as a basis for defining nature or natural environment. The nature of interest is often situated in built environments, as with indoor plants and street trees. Similarly, allotment (or community) gardens and urban parks comprise natural features, appear natural, and provide opportunities to engage with and follow natural processes, but they are typically designed, constructed, regulated, and maintained. Research has also acknowledged that a person may experience nature as such when viewing natural elements or landscapes from a building or vehicle, in photographs and films, or in virtual reality setups.</p>\\n\\n         <p>The term “urban nature” is instructive. It admits the presence of nature even in those human environments that some consider the antithesis of the natural. Yet, just as it puts the urban and natural together, it also sets them apart. It exemplifies how contacts with nature in an urbanized society occur within a frame of reference shaped in an everyday life oriented in various ways to the society\\'s urban circumstances.</p>\\n\\n         <p>The term “<span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">nature experience</a></span>” is used in some segments of this research to emphasize the subjective perception and evaluation of relevant environmental features (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67\" data-original-title=\"\" title=\"\">67</a></span>). It is, however, not a purely individual subjectivity, nor is it fixed. An individual\\'s experience of nature occurs within and carries further the long-running exchange between the society and its environment (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B48\" data-original-title=\"\" title=\"\">48</a></span>).</p>\\n\\n         <p>In sum, although nature has a wide variety of objective referents, it is also experienced subjectively and is effective as a social construction (for further discussion, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B106\" data-original-title=\"\" title=\"\">106</a></span>). Accordingly, researchers represent nature with diverse physical and spatial variables, encountered in diverse activity contexts. Some also apply measurement, analysis, and design strategies to tap into the subjective experience of the environment. Because opportunities for contact with nature, ways of encountering nature, and experiences of nature vary across sociocultural contexts, researchers have examined variation in outcomes not only among individuals within given populations, but also across populations (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108\" data-original-title=\"\" title=\"\">108</a></span>).</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"somereasonsforthecurrentresearchexpansion-1\" id=\"somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Growth in this field of research is shown clearly by the increase in publications. For example, a search in the Web of Knowledge on just one term, “greenspace and health,” yielded 2 hits for 1990–1999, 34 for 2000–2009, and 45 from 2010 to June 2013.</p>\\n\\n         <p>Why is this expansion occurring? Motives for involvement in the field vary. Some work reflects concerns that urbanization, environmental degradation, and lifestyle changes are quantitatively and qualitatively diminishing possibilities for human contact with nature. For example, dense urban settings, if poorly designed (without accessible green space), may reduce opportunities for stress-reducing nature contact as well as increase exposure to environmental stressors (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B53\" data-original-title=\"\" title=\"\">53</a></span>). Other work considers nature as just one aspect of the physical environment that is potentially beneficial for health. For example, epidemic obesity in some countries has focused attention on sedentary lifestyles and environmental supports for physical activity, including but not limited to nearby parks (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B24\" data-original-title=\"\" title=\"\">24</a></span>). In general, the research aims to inform practical measures that directly or indirectly involve access to nature, including provisions for housing, transportation, and recreation.</p>\\n\\n         <p>Change in thinking about health has also enabled expansion of the research field. With the epidemiologic transition to chronic, lifestyle-related diseases as the major causes of mortality, biopsychosocial explanation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B33\" data-original-title=\"\" title=\"\">33</a></span>) came to compete with the biomedical model, and constructs such as “psychological stress” and “social support” came into widespread use. This development has suited a field populated mainly by people trained in disciplines (e.g., human geography, environmental psychology, social epidemiology) and professions (e.g., outdoor recreation management, landscape architecture, urban forestry) that take interest in how people perceive, interpret, evaluate, and act on the environment. The conception of health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity” (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B138\" data-original-title=\"\" title=\"\">138</a></span>, p. 100) has also been influential for its heuristic value and as a basis for action. By acknowledging the positive, multidimensional character and subjective aspects of health, this concept supports the involvement of a wide variety of actors in efforts to understand and support health, including but not limited to those trained to treat symptoms of ill-health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B132\" data-original-title=\"\" title=\"\">132</a></span>). Research in the field accordingly represents health in many ways, not only with regard to forms of morbidity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86\" data-original-title=\"\" title=\"\">86</a></span>), causes of mortality (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>), and longevity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B119\" data-original-title=\"\" title=\"\">119</a></span>) but also with regard to self-reported health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>) and diverse intermediate outcomes involving different pathways, such as beneficial change in emotional and physiological markers of stress measured during visits to natural areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B3\" data-original-title=\"\" title=\"\">3</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n         <p>Methodological and conceptual advances are also feeding the expansion of the field; old and new topics are being studied with a range of new tools. For example, beliefs about stress-reducing effects of park visits are widespread and long-standing (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B101\" data-original-title=\"\" title=\"\">101</a></span>), but experimental testing of such effects is a relatively recent activity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B52\" data-original-title=\"\" title=\"\">52</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B125\" data-original-title=\"\" title=\"\">125</a></span>). These small-scale experimental demonstrations of pathway plausibility informed the first large-scale epidemiologic studies to assess associations between contact with nature and health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87\" data-original-title=\"\" title=\"\">87</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B93\" data-original-title=\"\" title=\"\">93</a></span>). Those studies used resources and techniques that only recently became available. For example, they used land-use data extracted from satellite images with digital technologies to describe the spatial extent of different kinds of nature accessible to the given individuals and groups in their residential contexts.</p>\\n\\n         <p>Having considered some of the developments in societies, sciences, and professions that have motivated and enabled the recent expansion of this field, we turn now to examine the research in more detail, starting with previous efforts to review the literature.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"reviewofreviews-1\" id=\"reviewofreviews-1\">REVIEW OF REVIEWS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Many review articles on nature and human health have been published in recent years. Assessing them is one means of summarizing the state of the field in terms of what is known and the quality of the research. In April 2013, we undertook a systematic search for reviews. We used Medline and all Web of Knowledge databases to identify peer-reviewed papers, sought nonindexed, non-peer-reviewed (gray) literature, and online reviews via Internet searches, and examined citation lists of already identified reviews. We included review articles or reports relevant to relationships between nature and human health and well-being. Inevitably, because the topic boundaries of nature and health are fuzzy, relevance was sometimes difficult to establish. For example, reviews on environmental correlates of physical activity often include access to urban parks or trails among many other environmental characteristics, but they may not focus on natural environments. We identified 59 relevant reviews at the time of the search (see <a target=\"xrefwindow\" href=\"http://www.annualreviews.org/doi/suppl/10.1146/annurev-publhealth-032013-182443\">\\n               <span class=\"jp-bold\">Supplemental Material</span>\\n            </a>). Of the peer-reviewed articles, most appeared in journals concerned with public health or environmental planning.</p>\\n\\n         <p>The reviews varied considerably in methodology and guiding aims. We observed three broad search-and-synthesis approaches: (<span class=\"jp-italic\">a</span>) narrative reviews, not clearly based on a systematic literature search (<span class=\"jp-italic\">n</span> = 24); (<span class=\"jp-italic\">b</span>) narrative reviews based on a systematic literature search or comprehensive case identification (<span class=\"jp-italic\">n</span> = 13); and (<span class=\"jp-italic\">c</span>) full systematic reviews based on an exhaustive literature search (<span class=\"jp-italic\">n</span> = 22). The reviews tended to have one of four general aims. First, systematic reviews sought to collate and synthesize all evidence for the effects of specified contacts with nature on specified markers of health (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2\" data-original-title=\"\" title=\"\">2</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123\" data-original-title=\"\" title=\"\">123</a></span>). Second, summary reviews often aimed to introduce the field, explain its concepts and the mechanisms by which natural environments might affect health, and then set out some evidence for effects (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54\" data-original-title=\"\" title=\"\">54</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B89\" data-original-title=\"\" title=\"\">89</a></span>). Some were published as gray literature and had been commissioned by governmental or nongovernmental agencies. A third group included what might be labeled “flag-waving” reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B42\" data-original-title=\"\" title=\"\">42</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B95\" data-original-title=\"\" title=\"\">95</a></span>). These were aimed at introducing the topic to a new audience and were often relatively brief. Fourth, and fewer in number, were conceptual reviews, methodological reviews, or those proposing new theoretical perspectives (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B8\" data-original-title=\"\" title=\"\">8</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B79\" data-original-title=\"\" title=\"\">79</a></span>).</p>\\n\\n         <p>Reviews also varied by the environments and/or pathways to health discussed. Physical activity had the most dedicated coverage as the focus of 18 reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B65\" data-original-title=\"\" title=\"\">65</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90\" data-original-title=\"\" title=\"\">90</a></span>). Mitigation of poor air quality/urban heat problems and physiologically/psychologically restorative effects also had dedicated reviews (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B12\" data-original-title=\"\" title=\"\">12</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B15\" data-original-title=\"\" title=\"\">15</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19\" data-original-title=\"\" title=\"\">19</a></span>). Twenty-six of the reviews addressed multiple mechanisms. The reviews covered a wide range of natural features and environmental categories, including indoor plants (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B16\" data-original-title=\"\" title=\"\">16</a></span>), urban parks (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B90\" data-original-title=\"\" title=\"\">90</a></span>), and forests (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B22\" data-original-title=\"\" title=\"\">22</a></span>), but coverage was uneven. Urban parks were the most commonly considered setting. Two categories of environments were conspicuously underrepresented or absent; rural areas had just one review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B41\" data-original-title=\"\" title=\"\">41</a></span>), and there were no review articles about gardens or allotments or community gardens other than those used for therapeutic purposes. Also, very few reviews focused on population subgroups. Children were the most commonly considered subgroup (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B91\" data-original-title=\"\" title=\"\">91</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B96\" data-original-title=\"\" title=\"\">96</a></span>). We found no reviews dedicated to differences in relationships between nature and health by gender, ethnicity, or socioeconomic position.</p>\\n\\n         <p>Given this variety in method, aims, and focus, we find it interesting that there was strong agreement about the methodological state of the art. Reviews commonly concluded that the field remains dominated by observational study designs. Reviews agreed that too few primary studies have been carried out in a consistent and rigorous way to establish the causality of relationships between contact with nature and health. They agreed, too, that few primary studies have explored how effects may vary by population subgroup, by type of natural environment, or by type of contact with nature. Many reviews commented that consistent and objective measurement of both exposure to nature and health-related outcomes remains elusive.</p>\\n\\n         <p>We identified three weaknesses in the reviews with specific relevance to this field. First, search strategies did not always address the variety of environments or settings that count as “natural.” It is necessary to enter multiple terms into the literature search to avoid missing important work. For example, urban parks may be described by one or more of park, green space, greenspace, green areas, open space, recreational space, natural space, natural environment, etc. Building a review of relevant literature on a search for “green space” or “park” alone, for example, is inadequate.</p>\\n\\n         <p>Second, reviews from individual-based disciplines such as psychology tended to ignore evidence from population-based disciplines such as epidemiology, and vice versa. A great strength of this field is that evidence exists to describe benefits of contact with nature at multiple levels, from laboratory experiments tracking individuals\\' physiological reactions to viewing natural scenes through to studies of differences in population mortality rates between more and less green cities. Each level and scale of study provides important components in understanding what contact with nature can and cannot do for human health.</p>\\n\\n         <p>Third, the variety of health outcomes used in primary studies was not well addressed. When reviews try to synthesize results from outcome measures that are sensitive to contact with nature in different ways, and for different durations, messages become clouded. The pooling of results from heterogeneous outcome measures may be motivated by a lack of multiple studies using consistent measures and study designs. However, failure to appreciate differences among outcome measures leads to mischaracterization of the evidence base. Heterogeneity in outcome measures used in primary studies perhaps explains the relatively small number of reviews that attempted a pooled analysis. The body of reviews consequently tells us little about effect size.</p>\\n\\n         <p>Overall, the reviews generally agreed that beneficial effects from contact with nature do occur and that these effects are plausibly connected to the mechanisms proposed in guiding theory. However, most of the evidence covered by the reviews related to intermediate health-related outcomes such as amount of physical activity, amount of social contacts, changes in physiological activity (e.g., cardiovascular, neuroendocrine, and musculoskeletal changes characteristic of stress reduction), changes in emotional states (e.g., increased happiness, decreased anger), and changes in cognitive capability (e.g., performance on standardized tests of executive attention) rather than to disease states or measures of mortality. The reviews found less evidence that traced full pathways from contact with nature, to measures reflecting the operation of the given mechanism(s), and on to longer-term outcomes. Thus, it is unsurprising that the reviews generally suggest that the evidence is not yet good enough to say when, where, and for whom given effects will occur or how large or long-lasting they will be.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"pathwaysthroughwhichcontactwithnaturerelatestohealth-1\" id=\"pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Contact with nature may affect health via multiple pathways. Pathways that have received relatively large amounts of research attention involve air quality, physical activity, social cohesion, and stress reduction. We describe each of these pathways and indicate some of the complexities involved in drawing conclusions about its role, including variation in association across people, activities, and characteristics of the nature under study. The pathways emphasize different aspects of nature, as physical environment, as setting for (individual and social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously and affect one another, a point to which we return at the end of this section. The different pathways and possibilities for effect modification by individual or contextual variables are illustrated in <span xmlns:f=\"http://www.example.org/functions\" class=\"xref\"><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1\" data-original-title=\"\" title=\"\">\\n               <span class=\"jp-bold\">Figure 1</span>\\n            </a></span>.\\n</p><p xmlns:f=\"http://www.example.org/functions\"></p><div class=\"figure html-fulltext-responsive-figure\" id=\"f1\"><div class=\"caption\"><span class=\"captionLabel\"><span class=\"label\">\\n                  <span class=\"jp-bold\">Figure 1</span>\\u2002\\n               </span></span><span class=\"captionText\"><span>Some pathways through which the natural environment can affect the health of broad segments of populations. Four of the pathways go through contact with nature, whereas two others go directly from the natural environment to air quality and stress, respectively, implying that the natural environment may affect health without an individual or group consciously engaging with nature as such. Associations between variables at the different steps in a given pathway are subject to modification by characteristics of the people or the context. The two-headed arrow between the natural environment and contact with nature acknowledges that these are joined in a reciprocal relationship. The two-headed arrows between the variables designating pathways (air quality, physical activity, social contacts, and stress) also speak to their reciprocal relatedness; however, each may be related with all the others and not only with the one adjacent. Abbreviations: CHD, coronary heart disease; CVD, cardiovascular disease.</span>\\n</span></div><div class=\"image\"><a class=\"media-link\" href=\"https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.gif\" id=\"/content/figure/10.1146/annurev-publhealth-032013-182443.f1\" data-fancybox=\"gallery1\"><img src=\"https://www.annualreviews.org/docserver/ahah/fulltext/publhealth/35/1/pu350207.f1_thmb.gif\" border=\"0\" alt=\"\\n                  Figure 1\\u2002\\n               \"><p style=\"margin-bottom:0;\"><span class=\"figure-duplicate-label\">\\n                  Figure 1\\u2002\\n               <br><br></span>Click to view</p></a><a href=\"https://www.annualreviews.org/docserver/fulltext/publhealth/35/1/pu350207.f1.ppt?mimeType=application/vnd.ms-powerpoint\">\\n                                        Download as PowerPoint\\n                                </a></div><div class=\"clearer\">&nbsp;</div></div><p></p>\\n         <p></p>\\n<!--splitRids is f1--><!--currentRid is f1--><!--current position is 51--><!--check position is 51-->\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Air Quality</span>\\n\\n            <p>Trees, shrubs, and other vegetation may affect ambient air quality and, through it, human health and well-being. There are both positive and negative impacts. Trees and other vegetation may reduce levels of some pollutants, including gases and particulate matter (PM), but they may also contribute to air pollution by releasing hydrocarbons. Some trees and plants release pollen, aggravating allergies. Finally, trees improve air quality indirectly when they cool urban environments and reduce building energy demand.</p>\\n\\n            <p>Trees and other vegetation can reduce levels of gaseous air pollutants [e.g., ozone, oxides of nitrogen (NOx), oxides of sulfur] and PM (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B37\" data-original-title=\"\" title=\"\">37</a></span>). For gases, the primary mechanisms of action are uptake by leaf stomata, absorption, and adsorption to plant surfaces. PM removal occurs through deposition on leaves and other plant surfaces (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B7\" data-original-title=\"\" title=\"\">7</a></span>). However, most <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">PM</a></span> is resuspended to the atmosphere, washed off by rain, or dropped to the ground (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100\" data-original-title=\"\" title=\"\">100</a></span>). Empirical studies (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B34\" data-original-title=\"\" title=\"\">34</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B113\" data-original-title=\"\" title=\"\">113</a></span>) and modeling studies (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B103\" data-original-title=\"\" title=\"\">103</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B120\" data-original-title=\"\" title=\"\">120</a></span>) suggest that urban tree canopy generally reduces air pollution levels by no more than a few percentage points, and often far less, although some results suggest more efficient removal of PM (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B59\" data-original-title=\"\" title=\"\">59</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B63\" data-original-title=\"\" title=\"\">63</a></span>) and certain volatile organic compounds (VOCs) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B70\" data-original-title=\"\" title=\"\">70</a></span>). Because trees may reduce air movement, especially in restricted spaces such as urban “canyons,” they may impede the localized dispersion of pollutants. Local factors such as the density, species composition, and age of the tree canopy, the concentration of air pollutants, and the length of the in-leaf season influence the extent of pollutant removal.</p>\\n\\n            <p>Plants may also affect indoor air quality—an important observation because people in developed nations may spend as much as 90% of their time indoors. <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">VOCs</a></span> such as benzene and formaldehyde may derive from furniture, carpets, cleaning agents, paint, and other sources. Indoor plants, especially such species as English ivy and spider plant, have been shown to reduce levels of many VOCs (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B81\" data-original-title=\"\" title=\"\">81</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B140\" data-original-title=\"\" title=\"\">140</a></span>). Bacteria in the soil may account for some VOC scavenging attributed to the plants (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B102\" data-original-title=\"\" title=\"\">102</a></span>).</p>\\n\\n            <p>In contrast to pollutant removal, trees can also be a source of hydrocarbons, including isoprene and terpenes, with considerable variation by species (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B9\" data-original-title=\"\" title=\"\">9</a></span>). These biogenic hydrocarbons may function as precursors of ozone and secondary organic aerosols (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B20\" data-original-title=\"\" title=\"\">20</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B74\" data-original-title=\"\" title=\"\">74</a></span>). Modeling studies have assessed the relative contribution of biogenic emissions to pollution levels (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B112\" data-original-title=\"\" title=\"\">112</a></span>). Results vary depending on the species of trees in a canopy, local atmospheric chemistry (especially levels of other precursors, such as NOx), local weather, and other factors.</p>\\n\\n            <p>Trees, grasses, and other plants release pollens, which can aggravate allergies and asthma in susceptible people (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B18\" data-original-title=\"\" title=\"\">18</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B27\" data-original-title=\"\" title=\"\">27</a></span>). The culprits vary with geography but include ragweed, grasses (e.g., Timothy, Bermuda, bluegrass), and trees such as catalpa and walnut. In cities that have favored trees that are heavy pollen producers, the health impact may be especially significant (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B19\" data-original-title=\"\" title=\"\">19</a></span>). A study of African American and Dominican children in New York City found a small but significant association between tree canopy extent and asthma and allergic sensitization (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B83\" data-original-title=\"\" title=\"\">83</a></span>). Hence, in some circumstances, the allergenic role of trees may eclipse their ability to improve health by reducing air contaminants.</p>\\n\\n            <p>Vegetation, especially trees, may also indirectly benefit air quality. During warm weather, trees reduce summer air conditioning demand by shading and hence cooling buildings and through the cooling effects of evapotranspiration. This effect, in turn, reduces energy demand, which, in areas served by coal-fired power plants, reduces air pollution derived from coal combustion, though not necessarily at the same location (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B1\" data-original-title=\"\" title=\"\">1</a></span>). During cold weather, the reverse can happen. In a simulation study in Sacramento, trees reduced the need for cooling energy in summer about three times more than they increased the need for warming energy in winter (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B114\" data-original-title=\"\" title=\"\">114</a></span>). The monetary benefits of energy savings related to trees may exceed those of the pollutant removal (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B13\" data-original-title=\"\" title=\"\">13</a></span>).</p>\\n\\n            <p>The overall impact of vegetation on air quality is therefore a function of several processes, operating in opposing directions: hydrocarbon emissions, pollen production, pollutant uptake, and effects on energy demand. Careful selection of species, design of planting configurations with regard to wind, shade, and other impacts, and maintenance of urban vegetation can optimize the beneficial effects on air quality (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B30\" data-original-title=\"\" title=\"\">30</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B100\" data-original-title=\"\" title=\"\">100</a></span>).</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Physical Activity</span>\\n\\n            <p>Physical activity promotes physical and mental health across the life span (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B10\" data-original-title=\"\" title=\"\">10</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B61\" data-original-title=\"\" title=\"\">61</a></span>). Recent evidence suggests that the health benefits of increased physical activity are largest among those who were initially doing the least (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B104\" data-original-title=\"\" title=\"\">104</a></span>). The outdoor environment may influence how physically active an individual is by offering suitable spaces for certain types of activities. It may also attract people outdoors because of the experiences it offers. Such outings ordinarily entail some form of physical activity, usually walking.</p>\\n\\n            <p>An important precondition for the use of natural environments for physical activity is individuals\\' (perceived) safety (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B62\" data-original-title=\"\" title=\"\">62</a></span>). Although there are possible negative effects associated with physical activity (e.g., sports injuries) as well as with being in a natural environment (e.g., Lyme disease from tick bites), most of these effects are not specific to physical activity in a natural environment.</p>\\n\\n            <p>Green space is only one part or aspect of the physical environment relevant for physical activity. Which environmental characteristics promote or hamper physical activity may depend strongly on the type of activity at hand (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B5\" data-original-title=\"\" title=\"\">5</a></span>). Three broad activity domains may be identified: work (including study), active transport (walking, cycling), and leisure (recreation, sport). Within the work domain, the greenness of the setting is thought to be of little importance for the amount of physical activity. The same is not true for active transport. Natural features may lead people to favor walking or cycling over other transport modes by making routes to destinations more attractive; however, distance to destination, availability of suitable infrastructure (e.g., sidewalks, bicycle paths), and safety are more important factors (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55\" data-original-title=\"\" title=\"\">55</a></span>). The evidence for association between green space and active transport (walking and/or cycling) is mixed, and this heterogeneity has been well summarized by recent systematic reviews (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B40\" data-original-title=\"\" title=\"\">40</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B78\" data-original-title=\"\" title=\"\">78</a></span>). Reasons for (noncausal) negative associations may be that large amounts of green space tend to go together with (<span class=\"jp-italic\">a</span>) greater distances to destinations, (<span class=\"jp-italic\">b</span>) higher levels of car ownership, and (<span class=\"jp-italic\">c</span>) better availability and lower cost of car parking spaces near one\\'s home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B28\" data-original-title=\"\" title=\"\">28</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B55\" data-original-title=\"\" title=\"\">55</a></span>).</p>\\n\\n            <p>The importance of natural environments for fostering physical activity may vary by population subgroup. Children are perhaps the most commonly studied subgroup in this context, but again results are mixed. In one review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B29\" data-original-title=\"\" title=\"\">29</a></span>), ∼40% of the studies in which environmental characteristics were objectively measured showed park access or vegetation to be positively associated with children\\'s physical activity levels; in the other 60% of the studies, no association was observed. A further systematic review (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B35\" data-original-title=\"\" title=\"\">35</a></span>) concluded that for (young) children the safety of the environment as perceived by their parents was an important moderating factor. Results from studies of older people are also mixed; two recent systematic reviews arrived at different conclusions. One (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B128\" data-original-title=\"\" title=\"\">128</a></span>) reviewed studies on the physical environment in general and concluded that there was no clear relationship between green space (and most other physical environmental characteristics) and physical activity of older people. The other specifically focused on green space, however, and it observed that seven out of eight studies showed a positive relationship between the greenness of the living environment and physical activity levels of older people (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B17\" data-original-title=\"\" title=\"\">17</a></span>). It also concluded that the perception of safety is an important moderating factor.</p>\\n\\n            <p>Relatively little attention has been paid to the relevance of specific environmental characteristics, such as the type of greenery or the quality of the open space. Results are again mixed. One study (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B46\" data-original-title=\"\" title=\"\">46</a></span>) concluded that very good access to large, very attractive public open space was associated with higher levels of walking. Another (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B56\" data-original-title=\"\" title=\"\">56</a></span>) by contrast observed no relationship between access to large, high-quality urban green spaces and recreational physical activity. A third study (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>) observed a relationship of quality (but not quantity) of streetscape greenery with “green” activity, though not with total physical activity. Finally, recent results suggest that community gardening is associated with a lower body mass index (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B141\" data-original-title=\"\" title=\"\">141</a></span>).</p>\\n\\n            <p>Given that physical activity is assumed to be an important pathway joining nature with health, we find it surprising that few studies have formally investigated the extent to which any association between nature and health might be mediated by physical activity levels. Of four studies done (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B88\" data-original-title=\"\" title=\"\">88</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B109\" data-original-title=\"\" title=\"\">109</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>), only one (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>) concluded that physical activity (more specifically recreational walking) was indeed an important mediator.</p>\\n\\n            <p>Finally, we note that most of the studies referred to in this overview have been cross-sectional in nature. Hence, the direction of observed relationships remains open to alternative explanations. For example, some people may choose a highly car-dependent (and presumably more green) living environment because they are not inclined to be physically active anyway (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B32\" data-original-title=\"\" title=\"\">32</a></span>).</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Social Cohesion</span>\\n\\n            <p>Much as for physical activity, abundant research has documented positive associations between social relationships and health and well-being (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B57\" data-original-title=\"\" title=\"\">57</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B97\" data-original-title=\"\" title=\"\">97</a></span>). Such salutary associations have also been observed for positive relationships specifically within the neighborhood (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110\" data-original-title=\"\" title=\"\">110</a></span>). A variety of terms have been introduced to reflect the potential value of social relationships in this context, including social capital, social support, social cohesion, and sense of community. Although these terms are often used interchangeably (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4\" data-original-title=\"\" title=\"\">4</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B110\" data-original-title=\"\" title=\"\">110</a></span>), we draw a distinction here between social capital and social cohesion. Social capital comprises primarily those resources available to an individual through his or her social connections, which may be activated in times of need. In contrast, social cohesion refers to shared norms and values, the existence of positive and friendly relationships, and feelings of being accepted and belonging (cf. 36). We prefer to use the term social cohesion here because it is more a characteristic of neighborhoods than of individuals (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B4\" data-original-title=\"\" title=\"\">4</a></span>) and so more likely to be influenced by physical characteristics of the neighborhood, such as the availability and quality of green space and natural elements.</p>\\n\\n            <p>Unlike physical activity, the environmental correlates of social cohesion have received little research attention thus far. Generally, the few studies available suggest a positive relationship between social cohesion and natural environments (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B38\" data-original-title=\"\" title=\"\">38</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85\" data-original-title=\"\" title=\"\">85</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>). Sugiyama et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>), for example, found perceived social coherence and local social interaction to be associated with the perceived greenness of the neighborhood. De Vries et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>) found an association between streetscape greenery and perceived social cohesion at the neighborhood scale, both for the quantity and, even more strongly, for the quality of greenery.</p>\\n\\n            <p>Social cohesion within a neighborhood does not lend itself to experimental research, which makes it difficult to determine whether relations with environmental features are causal. A few studies have, however, taken advantage of circumstances that likened a natural experiment. Researchers in Chicago (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77\" data-original-title=\"\" title=\"\">77</a></span>) took advantage of quasi-random assignment of public housing residents to dwelling units in architecturally similar high-rise buildings with varying amounts of vegetation outside. They found a positive association between the presence of trees and grass on the use of common spaces and informal social contact with neighbors. Moreover, the relationship between greenery and social contacts appeared to be mediated by the use of the common spaces.</p>\\n\\n            <p>The research in Chicago (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B77\" data-original-title=\"\" title=\"\">77</a></span>) also showed that social contact was positively related to one\\'s sense of safety. Subsequent studies showed that residents with more trees and grass around their buildings displayed less aggressive behavior, and their buildings were associated with fewer crimes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75\" data-original-title=\"\" title=\"\">75</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76\" data-original-title=\"\" title=\"\">76</a></span>). More recent research suggests similar positive effects of greening vacant lots, especially a reduction in gun assaults and disorderly conduct (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14\" data-original-title=\"\" title=\"\">14</a></span>).</p>\\n\\n            <p>Other attributes of the environment may moderate any association between natural features and social cohesion. Arguably, local parks must be well maintained and provide attractive recreational facilities to realize their full potential in developing social ties (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B71\" data-original-title=\"\" title=\"\">71</a></span>). Although green space generally is positively associated with feelings of safety, in dense urban areas enclosed green spaces may reduce such feelings (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B84\" data-original-title=\"\" title=\"\">84</a></span>). Similarly, trees in the public realm have been associated with reduced crime rates, but small trees on private lots have been associated with increased crime rates, presumably because these trees make it more difficult to observe criminal activity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B31\" data-original-title=\"\" title=\"\">31</a></span>). Some natural settings, such as community gardens, incorporate social ties almost by definition. In one study, older allotment gardeners reported having more contacts with friends and felt less lonely than did nongardening neighbors in the same age category (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B131\" data-original-title=\"\" title=\"\">131</a></span>).</p>\\n\\n            <p>The question remains whether social cohesion, sense of safety, aggressive behavior, and crime rates mediate an eventual relationship between contact with nature and health. Results from a few cross-sectional studies bear on this point. One found that social cohesion partially mediated the relationship between perceived neighborhood greenness and mental health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B118\" data-original-title=\"\" title=\"\">118</a></span>). Another concluded that feelings of loneliness and perceived shortage of social support partially mediated the relationship between the amount of green space within one kilometer and overall health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B85\" data-original-title=\"\" title=\"\">85</a></span>). A third found that social cohesion mediated relationships between quantity and quality of streetscape greenery and both overall health and mental health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>). In contrast, Francis et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B39\" data-original-title=\"\" title=\"\">39</a></span>) found neither sense of community nor social support to be an important mediator of the relationship between the quality of public open space and mental health. No studies were identified on mediation by aggressive behavior, fear of crime, and/or crime rates.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Stress Reduction</span>\\n\\n            <p>By helping people maintain adaptive resources needed to meet the demands of life, nature can reduce risk of illnesses involving chronic stress, as well as promote a range of intermediate outcomes such as increased subjective well-being. It can do so in two general ways. First, natural areas and features can reduce exposure to challenging environmental conditions by increasing distance to stressors and/or decreasing their perceptual salience. For example, green spaces between residences and heavily trafficked roads can reduce occupant noise annoyance (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B99\" data-original-title=\"\" title=\"\">99</a></span>), vegetation can conceal displeasing structures (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B115\" data-original-title=\"\" title=\"\">115</a></span>), and landscaping around housing can help residents maintain privacy and avoid feelings of crowding (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B23\" data-original-title=\"\" title=\"\">23</a></span>).</p>\\n\\n            <p>Second, nature can help people restore their adaptive resources. Escape from physical and social stressors has long been described as an important motive for recreation in natural areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B58\" data-original-title=\"\" title=\"\">58</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72\" data-original-title=\"\" title=\"\">72</a></span>). Nature\\'s restorative quality does not, however, depend only on an absence of stressors; its restorative quality is also defined in positive terms. Another persistent motive for outdoor recreation has been appreciation of nature—for beautiful scenery, symbolic qualities, and other valued attributes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B72\" data-original-title=\"\" title=\"\">72</a></span>). Push and pull motives also work in tandem in contexts other than outdoor recreation, notably the residential context. For example, residential location decisions commonly reflect efforts to both minimize stressful exposures and enhance access to restorative amenities, including green (or blue, i.e., water) areas (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B51\" data-original-title=\"\" title=\"\">51</a></span>).</p>\\n\\n            <p>This motive combination appears in two theories about how nature can promote more rapid and complete restoration than other environments can. They offer contrasting views on how restoration can proceed once a person has gained psychological distance from threats and other demands. Psychoevolutionary theory holds that, for a person experiencing acute stress, nature contact can very rapidly evoke positive affect, which in turn blocks negative thoughts and feelings and fosters reduction of physiological activation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B126\" data-original-title=\"\" title=\"\">126</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B127\" data-original-title=\"\" title=\"\">127</a></span>). Evolution purportedly conserved this functional aesthetic response because more rapid recovery from acute stress would have helped proto-humans better prepare for the next survival task. In contrast, attention restoration theory holds that effortless attention engaged by intrinsically interesting aspects of nature enables rest for a fatigued neurocognitive inhibitory mechanism engaged when willfully directing attention (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B67\" data-original-title=\"\" title=\"\">67</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68\" data-original-title=\"\" title=\"\">68</a></span>). People must inhibit task-irrelevant stimuli as they direct their attention at work and in many other circumstances. Fatigue of this directed attention capability occurs commonly, undermines effective action, and can increase susceptibility to stress (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B68\" data-original-title=\"\" title=\"\">68</a></span>).</p>\\n\\n            <p>Informed by one or both of these theories, true and quasi-experiments done in laboratory and field settings have assessed diverse affective, cognitive, and physiological effects of more and less natural comparison conditions, realized over varying but generally brief time spans after a naturalistic or experimental induction of a need for restoration. Published studies generally report some restorative advantage of nature, and by 2004, reviewers had judged the evidence for restorative effects of nature to be strong (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B54\" data-original-title=\"\" title=\"\">54</a></span>). More recently, methodological heterogeneity led other reviewers (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B11\" data-original-title=\"\" title=\"\">11</a></span>) to include only 3–6 studies in quantitative syntheses for each of several outcomes. They concluded, nonetheless, that the available studies provided reliable evidence of reductions in self-reported anger, fatigue, anxiety, and sadness and an increase in feelings of energy. They also found tentative evidence of enhanced attention. Conclusions regarding physiological effects were limited by a lack of studies that had the desired design features. Studies done since that 2010 review have further expanded the body of experimental evidence in several directions: additional comparison conditions [e.g., more or less open vegetation (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B45\" data-original-title=\"\" title=\"\">45</a></span>); encountered in different ways, e.g., work site desktop relaxation packages (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B60\" data-original-title=\"\" title=\"\">60</a></span>)], alone or in company (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B64\" data-original-title=\"\" title=\"\">64</a></span>), and in additional subpopulations [e.g., children with attention deficit disorder (ADD) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121\" data-original-title=\"\" title=\"\">121</a></span>), with effects registered using additional measurement techniques (e.g., cortisol; <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B129\" data-original-title=\"\" title=\"\">129</a></span>)].</p>\\n\\n            <p>Other research assumes cumulative health effects of more effective restoration on many occasions over time. That work is bolstered by studies that situate repeated contact with nature into an ongoing process of self-regulation. Such studies recognize that some people learn that natural settings are more likely than other settings to be restorative. Over time, they apply this knowledge to better manage adaptive resources such as attentional capacity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B69\" data-original-title=\"\" title=\"\">69</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B73\" data-original-title=\"\" title=\"\">73</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B116\" data-original-title=\"\" title=\"\">116</a></span>). When and how that learning begins remain understudied, but childhood experience appears influential for environmental attitudes measured in later life (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B133\" data-original-title=\"\" title=\"\">133</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B136\" data-original-title=\"\" title=\"\">136</a></span>). Some research does suggest that restorative childhood contact with nature can cumulatively provide benefits with far-reaching developmental significance. Contact with nature may for example improve attentional function in children with <span xmlns:f=\"http://www.example.org/functions\" class=\"xref xref-acronym\"><a class=\"js-viewGlossaryPopup\" title=\"Glossary\">ADD</a></span> (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B121\" data-original-title=\"\" title=\"\">121</a></span>) and enhance self-discipline in children without a diagnosis (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B122\" data-original-title=\"\" title=\"\">122</a></span>).</p>\\n\\n            <p>Observational studies commonly cite nature\\'s cumulative stress-reducing or restorative effects as one plausible pathway by which residential green space might affect perceived health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B26\" data-original-title=\"\" title=\"\">26</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B87\" data-original-title=\"\" title=\"\">87</a></span>), diverse forms of morbidity (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B86\" data-original-title=\"\" title=\"\">86</a></span>), and death from circulatory disease and other causes (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>). To date, however, most studies with individual data have not directly addressed a stress-reduction pathway owing to a lack of measures suitable for assessing mediation. One early quasi-experiment did however assess mediation with reference to attention restoration (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B76\" data-original-title=\"\" title=\"\">76</a></span>), and some recent surveys have begun to address this issue with self-report measures (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B25\" data-original-title=\"\" title=\"\">25</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B117\" data-original-title=\"\" title=\"\">117</a></span>). Another study has considered variation in the level of cortisol as a biomarker of chronic stress in members of a community sample living in more or less green circumstances (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B134\" data-original-title=\"\" title=\"\">134</a></span>); such a measure could serve tests of mediation of the effect of nature on stress-related illnesses.</p>\\n\\n            <p>Some studies have framed nature as a stress buffer, which has entailed estimating the interactive effect of stressful demands and access to nature on some health outcome. Several studies focused on nature in the residential context are illustrative. In a study done in rural New York state, conflicts at school experienced during the preceding three months were less strongly associated with psychological distress in children who had more nature in and around the home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B135\" data-original-title=\"\" title=\"\">135</a></span>). In a Dutch study, the relationships between stressful life events in the previous three months and both health complaints and perceived general health were weaker among those with more green space within 3 km of the home (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B130\" data-original-title=\"\" title=\"\">130</a></span>). In an ecological study covering the population of England, high income deprivation had a weaker association with all-cause and circulatory disease mortality among people living in areas with relatively large amounts of green space (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B94\" data-original-title=\"\" title=\"\">94</a></span>).</p>\\n\\n            <p>In sum, substantial evidence speaks to the potential benefits of contact with nature for avoiding health problems traceable to chronic stress and attentional fatigue; however, the greater part of this evidence concerns the short-term restorative benefits of single encounters with or experiences in nature.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">The Pathways Intertwine</span>\\n\\n            <p>Discussions of air quality, physical activity, social cohesion, and stress-reduction pathways emphasize different aspects of nature: as physical environment, as setting for (individual or social) behavior, and as experience. Contact with nature involves all these aspects, so multiple pathways are likely to be engaged simultaneously, as illustrated in <span xmlns:f=\"http://www.example.org/functions\" class=\"xref\"><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#f1\" data-original-title=\"\" title=\"\">\\n                  <span class=\"jp-bold\">Figure 1</span>\\n               </a></span>.</p>\\n<!--splitRids is f1--><!--currentRid is f1--><!--current position is 167--><!--check position is 51-->\\n            <p>Most individual studies have focused on one particular pathway from nature to health, but some research has addressed combinations involving two or more of them. Much of this work has recognized links between physical activity and stress reduction. People commonly engage in physical activity not only or even primarily because it will serve their health in the long run, but also because it helps them to feel good in the short run, sometimes by reducing tension and stress. Conversely, people who want to enter a natural environment for restoration ordinarily must engage in some form of physical activity to do so. Accordingly, experiments have found “green exercise” more psychologically beneficial than the same exercise in settings with relatively little nature (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B92\" data-original-title=\"\" title=\"\">92</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B105\" data-original-title=\"\" title=\"\">105</a></span>). Thus, being active in natural settings may yield health benefits over and above the benefits of physical activity in other environments (for a meta-analysis, see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B123\" data-original-title=\"\" title=\"\">123</a></span>). Conversely, a person walking or running along city streets may have to endure aversive conditions that reduce the benefits of the activity itself (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n            <p>Multiple pathways may be purposefully combined in cultural practices that regularly bring people in contact with nature. For example, community gardening may promote social contacts during moderate physical activity that also supports restoration from stress associated with work or other demands. The Japanese practice of Shinrin-yoku, or forest-bathing, involves beliefs about the salutary values of certain substances in the air, and it entails behaviors that ordinarily promote stress reduction (e.g., distancing oneself from everyday demands, adopting a meditative stance) (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B124\" data-original-title=\"\" title=\"\">124</a></span>).</p>\\n\\n            <p>Some cultural practices that engage multiple pathways may however not be salutary for all population subgroups. For example, in some countries, many households maintain a simple, inexpensive leisure home in the countryside, to which family members ordinarily travel together during vacation periods; however, as a domestic setting, the leisure home may also impose unwanted demands and on some household members more than others. Swedish research found that, after several years of follow-up, employed men who owned a leisure home had lower odds of retiring early for health reasons (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B50\" data-original-title=\"\" title=\"\">50</a></span>); however, this prospective association did not hold for women. Indeed, among highly educated and highly paid women, the likelihood of early retirement for health reasons was greater if they also owned a leisure home. Other studies have also indicated a potential gender difference in the nature-health relationship (e.g., <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B107\" data-original-title=\"\" title=\"\">107</a></span>).</p>\\n\\n         </div>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"methodologicalchallenges-1\" id=\"methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>In addition to the usual methodological concerns in experimental and epidemiologic research, we must tackle a litany of specific methodological challenges if we are to develop our understanding of the degree to which, how, and under which circumstances contact with nature affects human health and well-being.</p>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Measuring Exposure to Nature</span>\\n\\n            <p>Contact with nature challenges definition and control in field and laboratory experiments, and it is even more difficult to assess in free-living populations. Studies at population level typically assess exposure in one of three ways: assessments of exposure by how much nature there is in, or close to, the participants\\' area of residence; survey questions about how much time, and/or how often, people visit natural environments; and objective measures of contact via GPS (global positioning systems) technology. Each method has problems; that people live near natural spaces, report visiting them, or position themselves spatially within them does not mean that individuals actually have had contact with nature in a way that affects their health. None of these measures includes visual contact with nature from, for example, windows at home or in the workplace, which may also have beneficial effects (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B66\" data-original-title=\"\" title=\"\">66</a></span>). Furthermore, these measures typically miss fine details of exposure that may be important, such as the timing of exposure (e.g., for many environmental exposures, specific windows of vulnerability exist across the life span), the seasonality of exposure (e.g., the role of deciduous trees being in leaf), the quality of the nature (e.g., area in mature trees versus immature trees versus shrubs versus lawn), and the duration of exposure.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Measuring Outcomes</span>\\n\\n            <p>The other end of the equation between natural environment and health is the assessment of health itself. Plausible health impacts are varied and multiple, positive and negative, psychological and physiological, short term and/or long term. This plurality means many different health measures can be used, which, in turn, makes it difficult to achieve a coherent body of research. There is a particular challenge in bridging what we know about effects of contact with nature from small-scale, shorter-term experimental studies and what we might expect to observe as effects in the real world at the population level. For example, it is difficult to determine what the fall in blood pressure on viewing nature, established in experimental studies, might mean for rates of heart disease among regular visitors to national parks. There is no simple solution to this challenge and no one clearly superior set of instruments or measurements that are suited to use in all settings and studies.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Understanding Mechanisms</span>\\n\\n            <p>Understanding how any relationship between nature and health happens can aid interventions that promote possible benefits. It is also vital for specifying who might benefit most and least from the relationship. The challenge is that, as we have noted, the mechanisms by which nature might affect health are multiple and synergistic. They likely vary in significance within a single contact with nature, between contacts, across the life course, between population subgroups, between environment types and across cultures. Understandings of mechanisms being developed in the relatively controlled conditions of experiments should eventually help epidemiologists to form better hypotheses about the variation in associations they could expect at a population level.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Demonstrating Causality at a Population Level</span>\\n\\n            <p>Positive, short-term effects of contact with nature on affect, cognition, and physiology have been reasonably well established in laboratory and field experiments. However, cross-sectional designs still dominate studies of long-term health outcomes measured in populations. The vulnerability of these designs to confounding and reverse causality is a particular problem. The likelihood of contact with nature is strongly patterned by socioeconomic, ethnic, age, and cultural characteristics, which are, themselves, linked to health. Richardson et al. (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B108\" data-original-title=\"\" title=\"\">108</a></span>) provide a fine example of the potential for confounding factors to obscure relationships between green space and health at a population level.</p>\\n\\n            <p>Both experimental and longitudinal observational designs are potential routes to better evidence for a causal relationship among free-living populations. For studies of nature and health, however, both types of study impose specific challenges. Experimental studies at a population level are hard to perform. Manipulating environments or people is difficult and expensive. Scientists often must rely on public agencies or authorities to fund and deliver environmental changes, such as the creation of a new park or trail. It can also be difficult to establish and maintain control sites or populations, and opportunities to randomize the receipt of environmental interventions to different communities are rare. Useful results have emerged from quasi-experimental and before-after studies that capture some of the attributes of true experiments (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B14\" data-original-title=\"\" title=\"\">14</a></span>, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B75\" data-original-title=\"\" title=\"\">75</a></span>). The timescale for effects is also often a constraint. Funding to follow-up intervention studies is rarely longer than 3–5 years, but effects at a population level (perhaps even intergenerational effects) may take longer to establish.</p>\\n\\n            <p>Research on nature and health has been undertaken within different scientific paradigms. Attitudes toward the level of proof for an association, indeed attitudes toward the very idea of “proof,” vary between paradigms and are contested within them. Biomedical research, for example, often places great emphasis on low <span class=\"jp-italic\">p</span>-value thresholds for acceptance of an association. Frumkin (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B43\" data-original-title=\"\" title=\"\">43</a></span>) recently suggested, however, that the application of stringent <span class=\"jp-italic\">p</span>-value thresholds needs careful and explicit reconsideration in studies of nature and health. Moving from partial evidence to evidence-based recommendations regarding nature contact is a thorny problem.</p>\\n\\n            <p>For their part, existing panel or cohort studies that have good measures of health and well-being rarely also carry detailed information on contact with natural environments because this topic is relatively new to public health and epidemiology. Moreover, data sets that can also capture the change in or development of natural environments over time are rare.</p>\\n\\n         </div>\\n\\n         <div>\\n            \\n<span class=\"tl-lowest-section\">Effect Size</span>\\n\\n            <p>Evidence suggests that contact with nature has a small effect on health and well-being in comparison to structural characteristics such as income, employment, or education, and behavioral characteristics such as smoking. The signal-to-noise ratio in population-level studies is often small, and these studies need to be well designed and of sufficient power to identify any benefits. This does not mean that such studies are not worth doing, however; a small beneficial effect on a large number of people is a large contribution to population health (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B111\" data-original-title=\"\" title=\"\">111</a></span>).</p>\\n\\n         </div>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"prioritiesforfurtherresearch-1\" id=\"prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>Throughout this review we have identified issues that warrant further research, and in the previous section we have identified methodological challenges that must be met. Here, we try to highlight some specific priorities for the field.</p>\\n\\n         <p>First, we see a need to seek, create, and take opportunities for population-level experimental studies when they arise, within an understanding of their limits. Doing so will assist in demonstrating the degree to which nature-health relations have meaning for population health. We should also work to incorporate questions about contact with nature in ongoing longitudinal studies and ensure that high-quality data on change in type, quality, and availability of nature are maintained into the future and created retrospectively for the past. These additions would permit studies consistent with both cohort and life-course perspectives on relationships between nature and health.</p>\\n\\n         <p>Second, research on which types of nature are relatively effective for particular outcomes, and which qualities of those types are highly relevant, may be more fruitful when guided by theoretical ideas about why a particular type or quality of that type is likely to contribute to a particular pathway to health. Natural elements that are effective in improving air quality are not necessarily the same as those best suited to improving social cohesion in a neighborhood or to promoting psychological restoration.</p>\\n\\n         <p>Third, with specific regard to the stress pathway, much work remains to be done to rigorously assess theoretical claims regarding the components of experience that sustain attention restoration and stress recovery. To what extent, for example, are beneficial effects dependent on gaining psychological distance from stressful demands versus engaging with positive aspects of the nature encountered? This work will be aided by, among other things, further development of measures of perceived restorative quality in environments, and experimentation that more directly addresses the interplay of stress recovery, attention restoration, and other possible processes through which adaptive resources become renewed (cf. <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B49\" data-original-title=\"\" title=\"\">49</a></span>).</p>\\n\\n         <p>Fourth, if we acknowledge the competing priorities for funding and investment in health and health care, some research on nature and health might gain from a health economics perspective. If contact with nature is cost-effective as a means to protect and improve population health, it should be resourced and prioritized in preference to other approaches. Arguably, doing so requires knowledge not only about the economic significance of the health benefits generated, but also about the “doses” of nature needed to generate those benefits at the lowest possible cost. Discussions of dose, however, can entail a variety of problems, such as trivialization of contact with nature through neglect of long-term consequences of particularly powerful forms of contact (e.g., life-changing wilderness experiences). The dose metaphor therefore must be handled with care (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B137\" data-original-title=\"\" title=\"\">137</a></span>). As with other health-related issues, economic analyses must extend beyond health impacts to account for other benefits. For instance, an urban park may offer not only health benefits, but also benefits such as stormwater management and enhanced property values.</p>\\n\\n         <p>Finally, variety between population subgroups in access to, use of, and responses to nature remains persistently underexplored. Spatial, social, economic, racial, cultural, and demographic differences in relationships between nature and health seem highly probable. It may be that relationships between nature and health are implicated in exacerbating or mitigating health inequalities between subgroups, for example. This potential should be thoroughly explored.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n      <div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"concludingcomments-1\" id=\"concludingcomments-1\">CONCLUDING COMMENTS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div>\\n         \\n         <p>We have provided for a general public health audience an overview of research on how contact with nature relates to health in urbanized societies. We have not covered this body of work comprehensively, but instead have focused on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that target broad segments of urban populations, such as the availability of urban parks, the amount of green space in and near residential areas, and the preservation of peri-urban natural areas. Given our public health orientation, we have focused on the conditions of everyday life for the greatest part of the populations of interest. We consequently have hardly touched on the extensive literatures on wilderness experience (for reviews, see 72, <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B139\" data-original-title=\"\" title=\"\">139</a></span>) and contact with nature in the treatment and management of disability and illnesses such as depression (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B47\" data-original-title=\"\" title=\"\">47</a></span>) and breast cancer (<span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B21\" data-original-title=\"\" title=\"\">21</a></span>; see <span class=\"xref\"><a xmlns:f=\"http://www.example.org/functions\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#right-ref-B2\" data-original-title=\"\" title=\"\">2</a></span> for a review).</p>\\n\\n         <p>Despite such significant omissions, we trust readers will take away an appreciation not only of the diversity and complexity in forms of nature contact and potential benefits thereof, but also of the many challenges faced in characterizing those contacts and benefits. Taken together, the research reviewed does indicate that contact with nature can promote health. The evidence for some benefits, such as short-term restorative effects, is already quite strong. That said, nature contact should not be assumed always and automatically to be good for health; we have more to learn about for whom, when, how, and in which contexts it offers benefits.</p>\\n\\n         <p>Much also remains to be done to help those responsible for environmental policy, design, and management to make realistic assessments of what nature can and cannot do in their domain of activity. Part of this task involves explaining how health benefits might coincide (versus conflict with) other benefits, such as better stormwater management, species preservation, and carbon sequestration. If a particular form of nature contact shows small health benefits, interventions to promote it may still justify public investment if the health benefits combine with other benefits.</p>\\n\\n         <p>In closing, we recognize that many people speak of human-nature relations in moral/ethical and spiritual/religious terms with a view toward preservation of the natural environment. We respect such views. Our observations here regarding human health values should not be understood as the only or even the main bases for arguments regarding protection of habitats, species, and ecosystem integrity.</p>\\n\\n      <div class=\"clearer\">&nbsp;</div></div>\\n   \\n</div>\\n\\n<div id=\"article-level-0-back\">\\n<div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"disclosurestatement-1\" id=\"disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><p>H. Frumkin is a board member of the US Green Building Council and of the Children and Nature Network. R. Mitchell supervises a doctoral student funded by the UK Forestry Commission and has received research funding from the Forestry Commission in the recent past. The other authors are not aware of any affiliations, memberships, funding, or financial holdings that might be perceived as affecting the objectivity of this review.</p>\\n<div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"acknowledgments-1\" id=\"acknowledgments-1\">ACKNOWLEDGMENTS</a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><div>\\n            \\n<span class=\"tl-lowest-section\">\\n               <span class=\"jp-small\">acknowledgments</span>\\n            </span>\\n\\n            <p>R. Mitchell was funded under a European Research Council grant (ERC-2010-StG Grant 263501).</p>\\n\\n         </div>\\n<div class=\"clearer\">&nbsp;</div></div><div xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" class=\"articleSection\"><div class=\"articleSection\"><div class=\"sectionDivider\"><div class=\"tl-main-part title\"><a name=\"literaturecited-1\" id=\"literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></div><div class=\"menuButton\">Go to section...</div><div class=\"clearer\">&nbsp;</div></div><div class=\"dropDownMenu\"><ul><li><a class=\"menuLink top-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#top-1\">TOP</a></li><li><a class=\"menuLink abstract-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#abstract-1\">ABSTRACT</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#introduction-1\">INTRODUCTION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#definingnature-1\">DEFINING “NATURE”</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#somereasonsforthecurrentresearchexpansion-1\">SOME REASONS FOR THE CURRENT RESEARCH EXPANSION</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#reviewofreviews-1\">REVIEW OF REVIEWS</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#pathwaysthroughwhichcontactwithnaturerelatestohealth-1\">PATHWAYS THROUGH WHICH CONTACT WITH NATURE RELATES TO HEALTH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#methodologicalchallenges-1\">METHODOLOGICAL CHALLENGES</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#prioritiesforfurtherresearch-1\">PRIORITIES FOR FURTHER RESEARCH</a></li><li><a class=\"menuLink body-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#concludingcomments-1\">CONCLUDING COMMENTS</a></li><li><a class=\"menuLink back-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#disclosurestatement-1\">\\n            <span class=\"jp-small\">disclosure statement</span>\\n         </a></li><li><a class=\"menuLink ack-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#acknowledgments-1\">ACKNOWLEDGMENTS</a></li><li><a class=\"menuLink ref-section-link\" href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#literaturecited-1\">\\n            <span class=\"jp-small\">literature cited</span>\\n         </a></li></ul></div></div><span class=\"references\"><ol id=\"articlereference\" class=\"articlereference-vancouver\">\\n<li class=\"refbody\" id=\"B1\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Akbari</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Kurn</span> <span class=\"reference-given-names\">DM</span>, <span class=\"reference-surname\">Bretz</span> <span class=\"reference-given-names\">SE</span>, <span class=\"reference-surname\">Hanford</span> <span class=\"reference-given-names\">JW</span>. <span class=\"citation-label\">1.\\u2002</span> <span class=\"reference-year\">1997</span>. <span class=\"reference-article-title\"> Peak power and cooling energy savings of shade trees. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Energy Build.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">139–</span><span class=\"reference-lpage\">48</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&amp;author=H+Akbari&amp;author=DM+Kurn&amp;author=SE+Bretz&amp;author=JW+Hanford&amp;journal=Energy+Build.&amp;volume=25&amp;pages=139-48&amp;publication_year=1997&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B2\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Annerstedt</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Währborg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">2.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Nature-assisted therapy: systematic review of controlled and observational studies. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">39</span>:<span class=\"reference-fpage\">371–</span><span class=\"reference-lpage\">88</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&amp;author=M+Annerstedt&amp;author=P+W%C3%A4hrborg&amp;journal=Scand.+J.+Public+Health&amp;volume=39&amp;pages=371-88&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B3\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">3.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3947–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&amp;author=J+Barton&amp;author=J+Pretty&amp;journal=Environ.+Sci.+Technol.&amp;volume=44&amp;pages=3947-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B4\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Baum</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Ziersch</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Zhang</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Osborne</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">4.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">925–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&amp;author=FE+Baum&amp;author=AM+Ziersch&amp;author=G+Zhang&amp;author=K+Osborne&amp;journal=Health+Place&amp;volume=15&amp;pages=925-34&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B5\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bauman</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Reis</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">JC</span>, <span class=\"reference-surname\">Loos</span> <span class=\"reference-given-names\">RJ</span>, <span class=\"reference-surname\">Martin</span> <span class=\"reference-given-names\">BW</span>. <span class=\"citation-label\">5.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Correlates of physical activity: Why are some people physically active and others not?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">380</span>:<span class=\"reference-fpage\">258–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&amp;author=AE+Bauman&amp;author=RS+Reis&amp;author=JF+Sallis&amp;author=JC+Wells&amp;author=RJ+Loos&amp;author=BW+Martin&amp;journal=Lancet&amp;volume=380&amp;pages=258-71&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B6\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beck</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Meyers</span> <span class=\"reference-given-names\">NM</span>. <span class=\"citation-label\">6.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Health enhancement and companion animal ownership. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">247–</span><span class=\"reference-lpage\">57</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&amp;author=AM+Beck&amp;author=NM+Meyers&amp;journal=Annu.+Rev.+Public+Health&amp;volume=17&amp;pages=247-57&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B7\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beckett</span> <span class=\"reference-given-names\">KP</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">PH</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">7.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> The capture of particulate pollution by trees at five contrasting urban sites. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Arboric. J.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">209–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&amp;author=KP+Beckett&amp;author=PH+Freer-Smith&amp;author=G+Taylor&amp;journal=Arboric.+J.&amp;volume=24&amp;pages=209-30&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B8\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bedimo-Rung</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Mowen</span> <span class=\"reference-given-names\">AJ</span>, <span class=\"reference-surname\">Cohen</span> <span class=\"reference-given-names\">DA</span>. <span class=\"citation-label\">8.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The significance of parks to physical activity and public health: a conceptual model. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">159–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&amp;author=AL+Bedimo-Rung&amp;author=AJ+Mowen&amp;author=DA+Cohen&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=159-68&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B9\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Benjamin</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Winer</span> <span class=\"reference-given-names\">AM</span>. <span class=\"citation-label\">9.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Estimating the ozone-forming potential of urban trees and shrubs. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">53–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&amp;author=MT+Benjamin&amp;author=AM+Winer&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=53-68&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B10\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bize</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Johnson</span> <span class=\"reference-given-names\">JA</span>, <span class=\"reference-surname\">Plotnikoff</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">10.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Physical activity level and health-related quality of life in the general adult population: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Prev. Med.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">15</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&amp;author=R+Bize&amp;author=JA+Johnson&amp;author=RC+Plotnikoff&amp;journal=Prev.+Med.&amp;volume=45&amp;pages=401-15&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B11\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">LM</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">11.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> A systematic review of evidence for the added benefits to health of exposure to natural environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">10</span>:<span class=\"reference-fpage\">456</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&amp;author=DE+Bowler&amp;author=LM+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=BMC+Public+Health&amp;volume=10&amp;pages=456&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B12\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">12.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Urban greening to cool towns and cities: a systematic review of the empirical evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">97</span>:<span class=\"reference-fpage\">147–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&amp;author=DE+Bowler&amp;author=L+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=Landsc.+Urban+Plann.&amp;volume=97&amp;pages=147-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B13\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brack</span> <span class=\"reference-given-names\">CL</span>. <span class=\"citation-label\">13.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollution mitigation and carbon sequestration by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">116</span>:<span class=\"reference-fpage\">S195–</span><span class=\"reference-lpage\">200</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&amp;author=CL+Brack&amp;journal=Environ.+Pollut.&amp;volume=116&amp;pages=S195-200&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B14\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Branas</span> <span class=\"reference-given-names\">CC</span>, <span class=\"reference-surname\">Cheney</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">MacDonald</span> <span class=\"reference-given-names\">JM</span>, <span class=\"reference-surname\">Tam</span> <span class=\"reference-given-names\">VW</span>, <span class=\"reference-surname\">Jackson</span> <span class=\"reference-given-names\">TD</span>, <span class=\"reference-surname\">Ten Have</span> <span class=\"reference-given-names\">TR</span>. <span class=\"citation-label\">14.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> A difference-in-differences analysis of health, safety, and greening vacant urban space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Epidemiol.</span></span> <span class=\"reference-volume\">174</span>:<span class=\"reference-fpage\">1296–</span><span class=\"reference-lpage\">306</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&amp;author=CC+Branas&amp;author=RA+Cheney&amp;author=JM+MacDonald&amp;author=VW+Tam&amp;author=TD+Jackson&amp;author=TR+Ten+Have&amp;journal=Am.+J.+Epidemiol.&amp;volume=174&amp;pages=1296-306&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B15\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bratman</span> <span class=\"reference-given-names\">GN</span>, <span class=\"reference-surname\">Hamilton</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Daily</span> <span class=\"reference-given-names\">GC</span>. <span class=\"citation-label\">15.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The impacts of nature experience on human cognitive function and mental health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. N.Y. Acad. Sci.</span></span> <span class=\"reference-volume\">1249</span>:<span class=\"reference-fpage\">118–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&amp;author=GN+Bratman&amp;author=JP+Hamilton&amp;author=GC+Daily&amp;journal=Ann.+N.Y.+Acad.+Sci.&amp;volume=1249&amp;pages=118-36&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B16\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bringslimark</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>. <span class=\"citation-label\">16.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> The psychological benefits of indoor plants: a critical review of the experimental literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">422–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&amp;author=T+Bringslimark&amp;author=T+Hartig&amp;author=GG+Patil&amp;journal=J.+Environ.+Psychol.&amp;volume=29&amp;pages=422-33&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B17\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Broekhuizen</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">SI</span>, <span class=\"reference-surname\">Pierik</span> <span class=\"reference-given-names\">FH</span>. <span class=\"citation-label\">17.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Aging in a Green Living Environment: A Systematic Review of the Literature.</span></span> TNO rep. R10154 Leiden: TNO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&amp;author=K+Broekhuizen&amp;author=SI+de+Vries&amp;author=FH+Pierik&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B18\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brooks</span> <span class=\"reference-given-names\">GD</span>, <span class=\"reference-surname\">Bush</span> <span class=\"reference-given-names\">RK</span>. <span class=\"citation-label\">18.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Allergens and other factors important in atopic disease. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Patterson\\'s Allergic Diseases</span></span> LC Grammer, PA Greenberger <span class=\"reference-fpage\">73–</span><span class=\"reference-lpage\">103</span> Philadelphia: Lippincott, Williams &amp; Wilkins, 7th ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&amp;author=GD+Brooks&amp;author=RK+Bush&amp;journal=Patterson%27s+Allergic+Diseases&amp;pages=73-103&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B19\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cariñanos</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Casares-Porcel</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">19.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">101</span>:<span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">14</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&amp;author=P+Cari%C3%B1anos&amp;author=M+Casares-Porcel&amp;journal=Landsc.+Urban+Plann.&amp;volume=101&amp;pages=205-14&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B20\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Chameides</span> <span class=\"reference-given-names\">WL</span>, <span class=\"reference-surname\">Lindsay</span> <span class=\"reference-given-names\">RW</span>, <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Kiang</span> <span class=\"reference-given-names\">CS</span>. <span class=\"citation-label\">20.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-article-title\"> The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">241</span>:<span class=\"reference-fpage\">1473–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&amp;author=WL+Chameides&amp;author=RW+Lindsay&amp;author=J+Richardson&amp;author=CS+Kiang&amp;journal=Science&amp;volume=241&amp;pages=1473-75&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B21\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cimprich</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">21.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Development of an intervention to restore attention in cancer patients. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Cancer Nurs.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">83–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&amp;author=B+Cimprich&amp;journal=Cancer+Nurs.&amp;volume=16&amp;pages=83-92&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B22\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Colfer</span> <span class=\"reference-given-names\">CJP</span>, <span class=\"reference-surname\">Sheil</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Kishi</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">22.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests and Human Health: Assessing the Evidence</span></span> Bogor, Indones.: Cent. Int. For. Res <a target=\"xrefwindow\" href=\"http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf\"><span class=\"reference-bold\">http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&amp;author=CJP+Colfer&amp;author=D+Sheil&amp;author=M+Kishi&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B23\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Day</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">23.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Plan Educ. Res.</span></span> <span class=\"reference-volume\">19</span>:<span class=\"reference-fpage\">265–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&amp;author=LL+Day&amp;journal=J.+Plan+Educ.+Res.&amp;volume=19&amp;pages=265-75&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B24\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Claßen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Eigenheer-Hug</span> <span class=\"reference-given-names\">S-M</span>, <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">24.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Contributions of natural environments to physical activity. </span> See Ref. 98 <span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&amp;author=S+de+Vries&amp;author=T+Cla%C3%9Fen&amp;author=S-M+Eigenheer-Hug&amp;author=K+Korpela&amp;author=J+Maas&amp;pages=205-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B25\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">25.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Streetscape greenery and health: stress, social cohesion and physical activity as mediators. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">94</span>:<span class=\"reference-fpage\">26–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Soc.+Sci.+Med.&amp;volume=94&amp;pages=26-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B26\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">26.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">1717–</span><span class=\"reference-lpage\">31</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&amp;author=S+de+Vries&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Environ.+Plann.+A&amp;volume=35&amp;pages=1717-31&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B27\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">DellaValle</span> <span class=\"reference-given-names\">CT</span>, <span class=\"reference-surname\">Triche</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Leaderer</span> <span class=\"reference-given-names\">BP</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">ML</span>. <span class=\"citation-label\">27.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Epidemiology</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">55–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&amp;author=CT+DellaValle&amp;author=EW+Triche&amp;author=BP+Leaderer&amp;author=ML+Bell&amp;journal=Epidemiology&amp;volume=23&amp;pages=55-63&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B28\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Den Hertog</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Bronkhorst</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Moerman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Van Wilgenburg</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">28.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit</span> [<span class=\"reference-italic\">The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity</span>].</span> Amsterdam: EMGO Inst.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&amp;author=F+Den+Hertog&amp;author=M+Bronkhorst&amp;author=M+Moerman&amp;author=R+Van+Wilgenburg&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B29\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Kerr</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Lee</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Rosenberg</span> <span class=\"reference-given-names\">DE</span>. <span class=\"citation-label\">29.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Neighborhood environment and physical activity among youth: a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">442–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&amp;author=D+Ding&amp;author=JF+Sallis&amp;author=J+Kerr&amp;author=S+Lee&amp;author=DE+Rosenberg&amp;journal=Am.+J.+Prev.+Med.&amp;volume=41&amp;pages=442-55&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B30\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Domm</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Drew</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Greene</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Ripley</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Tordesillas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">30.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Recommended urban forest mixtures to optimize selected environmental benefits. </span> <span class=\"reference-source\"><span class=\"reference-italic\">EnviroNews: Int. Soc. Environ. Bot.</span></span> <span class=\"reference-volume\">14</span>:<span class=\"reference-fpage\">7–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&amp;author=J+Domm&amp;author=R+Drew&amp;author=A+Greene&amp;author=E+Ripley&amp;author=R+Smardon&amp;author=J+Tordesillas&amp;journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&amp;volume=14&amp;pages=7-10&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B31\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Donovan</span> <span class=\"reference-given-names\">GH</span>, <span class=\"reference-surname\">Prestemon</span> <span class=\"reference-given-names\">JP</span>. <span class=\"citation-label\">31.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The effect of trees on crime in Portland, Oregon. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&amp;author=GH+Donovan&amp;author=JP+Prestemon&amp;journal=Environ.+Behav.&amp;volume=44&amp;pages=3-30&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B32\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Eid</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Overman</span> <span class=\"reference-given-names\">HG</span>, <span class=\"reference-surname\">Puga</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Turner</span> <span class=\"reference-given-names\">MA</span>. <span class=\"citation-label\">32.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Fat city: questioning the relationship between urban sprawl and obesity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Urban Econ.</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">385–</span><span class=\"reference-lpage\">404</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&amp;author=J+Eid&amp;author=HG+Overman&amp;author=D+Puga&amp;author=MA+Turner&amp;journal=J.+Urban+Econ.&amp;volume=63&amp;pages=385-404&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B33\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Engel</span> <span class=\"reference-given-names\">GL</span>. <span class=\"citation-label\">33.\\u2002</span> <span class=\"reference-year\">1977</span>. <span class=\"reference-article-title\"> The need for a new medical model: a challenge for biomedicine. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">196</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&amp;author=GL+Engel&amp;journal=Science&amp;volume=196&amp;pages=129-36&amp;publication_year=1977&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B34\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Escobedo</span> <span class=\"reference-given-names\">FJ</span>, <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>. <span class=\"citation-label\">34.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Spatial heterogeneity and air pollution removal by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">90</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&amp;author=FJ+Escobedo&amp;author=DJ+Nowak&amp;journal=Landsc.+Urban+Plann.&amp;volume=90&amp;pages=102-10&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B35\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ferdinand</span> <span class=\"reference-given-names\">AO</span>, <span class=\"reference-surname\">Sen</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Rahurkar</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Engler</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Menachemi</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">35.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The relationship between built environments and physical activity: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">102</span>:<span class=\"reference-fpage\">e7–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&amp;author=AO+Ferdinand&amp;author=B+Sen&amp;author=S+Rahurkar&amp;author=S+Engler&amp;author=N+Menachemi&amp;journal=Am.+J.+Public+Health&amp;volume=102&amp;pages=e7-13&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B36\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Forrest</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kearns</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">36.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Social cohesion, social capital and the neighbourhood. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban Stud.</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">2125–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&amp;author=R+Forrest&amp;author=A+Kearns&amp;journal=Urban+Stud.&amp;volume=38&amp;pages=2125-43&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B37\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fowler</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">37.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollutant deposition and uptake by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Air Pollution and Plant Life</span></span> JNB Bell, M Treshow <span class=\"reference-fpage\">43–</span><span class=\"reference-lpage\">67</span> New York: Wiley, 2nd ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&amp;author=D+Fowler&amp;journal=Air+Pollution+and+Plant+Life&amp;pages=43-67&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B38\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">38.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Creating sense of community: the role of public space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&amp;author=J+Francis&amp;author=B+Giles-Corti&amp;author=L+Wood&amp;author=M+Knuiman&amp;journal=J.+Environ.+Psychol.&amp;volume=32&amp;pages=401-9&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B39\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">LJ</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">39.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">74</span>:<span class=\"reference-fpage\">1570–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&amp;author=J+Francis&amp;author=LJ+Wood&amp;author=M+Knuiman&amp;author=B+Giles-Corti&amp;journal=Soc.+Sci.+Med.&amp;volume=74&amp;pages=1570-77&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B40\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fraser</span> <span class=\"reference-given-names\">SDS</span>, <span class=\"reference-surname\">Lock</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">40.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Cycling for transport and public health: a systematic review of the effect of the environment on cycling. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eur. J. Public Health</span></span> <span class=\"reference-volume\">21</span>:<span class=\"reference-fpage\">738–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&amp;author=SDS+Fraser&amp;author=K+Lock&amp;journal=Eur.+J.+Public+Health&amp;volume=21&amp;pages=738-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B41\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frost</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Goins</span> <span class=\"reference-given-names\">RT</span>, <span class=\"reference-surname\">Hunter</span> <span class=\"reference-given-names\">RH</span>, <span class=\"reference-surname\">Hooker</span> <span class=\"reference-given-names\">SP</span>, <span class=\"reference-surname\">Bryant</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">41.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Effects of the built environment on physical activity of adults living in rural settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Health Promot.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">267–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&amp;author=SS+Frost&amp;author=RT+Goins&amp;author=RH+Hunter&amp;author=SP+Hooker&amp;author=LL+Bryant&amp;journal=Am.+J.+Health+Promot.&amp;volume=24&amp;pages=267-83&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B42\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">42.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Beyond toxicity: human health and the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">234–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=20&amp;pages=234-40&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B43\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">43.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The evidence of nature and the nature of evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">196–</span><span class=\"reference-lpage\">97</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=44&amp;pages=196-97&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B44\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Galea</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Vlahov</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">44.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Urban health: evidence, challenges, and directions. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">341–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&amp;author=S+Galea&amp;author=D+Vlahov&amp;journal=Annu.+Rev.+Public+Health&amp;volume=26&amp;pages=341-65&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B45\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gatersleben</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Andrews</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">45.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> When walking in nature is not restorative—the role of prospect and refuge. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">91–</span><span class=\"reference-lpage\">101</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&amp;author=B+Gatersleben&amp;author=M+Andrews&amp;journal=Health+Place&amp;volume=20&amp;pages=91-101&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B46\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Broomhall</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Collins</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Douglas</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">46.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Increasing walking: How important is distance to, attractiveness, and size of public open space?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&amp;author=B+Giles-Corti&amp;author=MH+Broomhall&amp;author=M+Knuiman&amp;author=C+Collins&amp;author=K+Douglas&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=169-76&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B47\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gonzalez</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>, <span class=\"reference-surname\">Martinsen</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Kirkevold</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">47.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Therapeutic horticulture in clinical depression: a prospective study of active components. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Adv. Nurs.</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">2002–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&amp;author=MT+Gonzalez&amp;author=T+Hartig&amp;author=GG+Patil&amp;author=EW+Martinsen&amp;author=M+Kirkevold&amp;journal=J.+Adv.+Nurs.&amp;volume=66&amp;pages=2002-13&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B48\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">48.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Nature experience in transactional perspective. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&amp;author=T+Hartig&amp;journal=Landsc.+Urban+Plann.&amp;volume=25&amp;pages=17-36&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B49\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>, <span class=\"reference-surname\">Jamner</span> <span class=\"reference-given-names\">LD</span>, <span class=\"reference-surname\">Davis</span> <span class=\"reference-given-names\">DS</span>, <span class=\"reference-surname\">Gärling</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">49.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Tracking restoration in natural and urban field settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">109–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&amp;author=T+Hartig&amp;author=GW+Evans&amp;author=LD+Jamner&amp;author=DS+Davis&amp;author=T+G%C3%A4rling&amp;journal=J.+Environ.+Psychol.&amp;volume=23&amp;pages=109-23&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B50\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Fransson</span> <span class=\"reference-given-names\">U</span>. <span class=\"citation-label\">50.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">82–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&amp;author=T+Hartig&amp;author=U+Fransson&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=82-96&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B51\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Kylin</span> <span class=\"reference-given-names\">C</span>. <span class=\"citation-label\">51.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Residence in the social ecology of stress and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Soc. Iss.</span></span> <span class=\"reference-volume\">59</span>:<span class=\"reference-fpage\">611–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&amp;author=T+Hartig&amp;author=G+Johansson&amp;author=C+Kylin&amp;journal=J.+Soc.+Iss.&amp;volume=59&amp;pages=611-36&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B52\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Mang</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">52.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Restorative effects of natural environment experiences. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&amp;author=T+Hartig&amp;author=M+Mang&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=23&amp;pages=3-26&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B53\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Hagerhall</span> <span class=\"reference-given-names\">CM</span>, <span class=\"reference-surname\">Tomalak</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">53.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: psychological, social and cultural processes. </span> See Ref. 98 <span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B54\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">54.\\u2002</span><span class=\"reference-collab\">Health Counc. Neth</span> <span class=\"reference-year\">2004</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being.</span></span> The Hague: Health Counc. Neth., RMNO <a target=\"xrefwindow\" href=\"http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf\"><span class=\"reference-bold\">http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&amp;publication_year=2004&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B55\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Heinen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">van Wee</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Maat</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">55.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Commuting by bicycle: an overview of the literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Transp. Rev.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&amp;author=E+Heinen&amp;author=B+van+Wee&amp;author=K+Maat&amp;journal=Transp.+Rev.&amp;volume=30&amp;pages=59-96&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B56\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hillsdon</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Panter</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Foster</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">56.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The relationship between access and quality of urban green space with population physical activity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">120</span>:<span class=\"reference-fpage\">1127–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&amp;author=M+Hillsdon&amp;author=J+Panter&amp;author=C+Foster&amp;author=A+Jones&amp;journal=Public+Health&amp;volume=120&amp;pages=1127-32&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B57\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Holt-Lunstad</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">TB</span>, <span class=\"reference-surname\">Layton</span> <span class=\"reference-given-names\">JB</span>. <span class=\"citation-label\">57.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social relationships and mortality risk: a meta-analytic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">PLoS Med.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">e1000316</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&amp;author=J+Holt-Lunstad&amp;author=TB+Smith&amp;author=JB+Layton&amp;journal=PLoS+Med.&amp;volume=7&amp;pages=e1000316&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B58\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Home</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hunziker</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">58.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Psychosocial outcomes as motivations for visiting nearby urban green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">34</span>:<span class=\"reference-fpage\">350–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&amp;author=R+Home&amp;author=M+Hunziker&amp;author=N+Bauer&amp;journal=Leis.+Sci.&amp;volume=34&amp;pages=350-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B59\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Islam</span> <span class=\"reference-given-names\">MN</span>, <span class=\"reference-surname\">Rahman</span> <span class=\"reference-given-names\">K-S</span>, <span class=\"reference-surname\">Bahar</span> <span class=\"reference-given-names\">MM</span>, <span class=\"reference-surname\">Habib</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Ando</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hattori</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">59.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Pollution attenuation by roadside greenbelt in and around urban areas. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">460–</span><span class=\"reference-lpage\">64</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&amp;author=MN+Islam&amp;author=K-S+Rahman&amp;author=MM+Bahar&amp;author=MA+Habib&amp;author=K+Ando&amp;author=N+Hattori&amp;journal=Urban+For.+Urban+Green.&amp;volume=11&amp;pages=460-64&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B60\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jahncke</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Hygge</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Halin</span> <span class=\"reference-given-names\">N</span>, <span class=\"reference-surname\">Green</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Dimberg</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">60.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Open-plan office noise: cognitive performance and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">31</span>:<span class=\"reference-fpage\">373–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&amp;author=H+Jahncke&amp;author=S+Hygge&amp;author=N+Halin&amp;author=AM+Green&amp;author=K+Dimberg&amp;journal=J.+Environ.+Psychol.&amp;volume=31&amp;pages=373-82&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B61\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Janssen</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">LeBlanc</span> <span class=\"reference-given-names\">AG</span>. <span class=\"citation-label\">61.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Behav. Nutr. Phys. Act.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&amp;author=I+Janssen&amp;author=AG+LeBlanc&amp;journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&amp;volume=7&amp;pages=40&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B62\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Fors</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Lindgren</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Wiström</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">62.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Perceived personal safety in relation to urban woodland vegetation—a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&amp;author=M+Jansson&amp;author=H+Fors&amp;author=T+Lindgren&amp;author=B+Wistr%C3%B6m&amp;journal=Urban+For.+Urban+Green.&amp;volume=12&amp;pages=127-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B63\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jim</span> <span class=\"reference-given-names\">CY</span>, <span class=\"reference-surname\">Chen</span> <span class=\"reference-given-names\">WY</span>. <span class=\"citation-label\">63.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Manag.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">665–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&amp;author=CY+Jim&amp;author=WY+Chen&amp;journal=J.+Environ.+Manag.&amp;volume=88&amp;pages=665-76&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B64\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">64.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Psychological benefits of walking: moderation by company and outdoor environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Appl. Psychol. Health Well-Being</span></span> <span class=\"reference-volume\">3</span>:<span class=\"reference-fpage\">261–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&amp;author=M+Johansson&amp;author=T+Hartig&amp;author=H+Staats&amp;journal=Appl.+Psychol.+Health+Well-Being&amp;volume=3&amp;pages=261-80&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B65\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaczynski</span> <span class=\"reference-given-names\">AT</span>, <span class=\"reference-surname\">Henderson</span> <span class=\"reference-given-names\">KA</span>. <span class=\"citation-label\">65.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Environmental correlates of physical activity: a review of evidence about parks and recreation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">315–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&amp;author=AT+Kaczynski&amp;author=KA+Henderson&amp;journal=Leis.+Sci.&amp;volume=29&amp;pages=315-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B66\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">66.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> The role of nature in the context of the workplace. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">193–</span><span class=\"reference-lpage\">201</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&amp;author=R+Kaplan&amp;journal=Landsc.+Urban+Plann.&amp;volume=26&amp;pages=193-201&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B67\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">67.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-source\"><span class=\"reference-italic\">The Experience of Nature: A Psychological Perspective</span></span> New York: Cambridge Univ. Press\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&amp;author=R+Kaplan&amp;author=S+Kaplan&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B68\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">68.\\u2002</span> <span class=\"reference-year\">1995</span>. <span class=\"reference-article-title\"> The restorative benefits of nature: toward an integrative framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&amp;author=S+Kaplan&amp;journal=J.+Environ.+Psychol.&amp;volume=15&amp;pages=169-82&amp;publication_year=1995&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B69\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">69.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Meditation, restoration, and the management of mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">480–</span><span class=\"reference-lpage\">506</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&amp;author=S+Kaplan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=480-506&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B70\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Karl</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Harley</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Emmons</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Thornton</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Guenther</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">70.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">330</span>:<span class=\"reference-fpage\">816–</span><span class=\"reference-lpage\">19</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&amp;author=T+Karl&amp;author=P+Harley&amp;author=L+Emmons&amp;author=B+Thornton&amp;author=A+Guenther&amp;journal=Science&amp;volume=330&amp;pages=816-19&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B71\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaźmierczak</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">71.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The contribution of local parks to neighbourhood social ties. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">109</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">44</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&amp;author=A+Ka%C5%BAmierczak&amp;journal=Landsc.+Urban+Plann.&amp;volume=109&amp;pages=31-44&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B72\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Knopf</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">72.\\u2002</span> <span class=\"reference-year\">1987</span>. <span class=\"reference-article-title\"> Human behavior, cognition, and affect in the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Handbook of Environmental Psychology</span></span> D Stokols, I Altman <span class=\"reference-fpage\">783–</span><span class=\"reference-lpage\">825</span> New York: Wiley\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&amp;author=RC+Knopf&amp;journal=Handbook+of+Environmental+Psychology&amp;pages=783-825&amp;publication_year=1987&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B73\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">73.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Restorative qualities of favorite places. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&amp;author=K+Korpela&amp;author=T+Hartig&amp;journal=J.+Environ.+Psychol.&amp;volume=16&amp;pages=221-33&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B74\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kroll</span> <span class=\"reference-given-names\">JH</span>, <span class=\"reference-surname\">Seinfeld</span> <span class=\"reference-given-names\">JH</span>. <span class=\"citation-label\">74.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">42</span>:<span class=\"reference-fpage\">3593–</span><span class=\"reference-lpage\">624</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&amp;author=JH+Kroll&amp;author=JH+Seinfeld&amp;journal=Atmos.+Environ.&amp;volume=42&amp;pages=3593-624&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B75\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">75.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Aggression and violence in the inner city: effects of environment via mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">543–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=543-71&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B76\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">76.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Environment and crime in the inner city: Does vegetation reduce crime?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">343–</span><span class=\"reference-lpage\">67</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=343-67&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B77\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>, <span class=\"reference-surname\">Coley</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Brunson</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">77.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Fertile ground for community: inner-city neighborhood common spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Community Psychol.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">823–</span><span class=\"reference-lpage\">51</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;author=RL+Coley&amp;author=L+Brunson&amp;journal=Am.+J.+Community+Psychol.&amp;volume=26&amp;pages=823-51&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B78\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">78.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Greenspace and obesity: a systematic review of the evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Obes. Rev.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">e183–</span><span class=\"reference-lpage\">89</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Obes.+Rev.&amp;volume=12&amp;pages=e183-89&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B79\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">79.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">118</span>:<span class=\"reference-fpage\">62–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Landsc.+Urban+Plann.&amp;volume=118&amp;pages=62-69&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B80\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lindheim</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Syme</span> <span class=\"reference-given-names\">SL</span>. <span class=\"citation-label\">80.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Environments, people, and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">335–</span><span class=\"reference-lpage\">59</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&amp;author=R+Lindheim&amp;author=SL+Syme&amp;journal=Annu.+Rev.+Public+Health&amp;volume=4&amp;pages=335-59&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B81\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Liu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Mu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Zhu</span> <span class=\"reference-given-names\">Y-G</span>, <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Arens</span> <span class=\"reference-given-names\">NC</span>. <span class=\"citation-label\">81.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Which ornamental plant species effectively remove benzene from indoor air?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">650–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&amp;author=Y-J+Liu&amp;author=Y-J+Mu&amp;author=Y-G+Zhu&amp;author=H+Ding&amp;author=NC+Arens&amp;journal=Atmos.+Environ.&amp;volume=41&amp;pages=650-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B82\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lloyd</span> <span class=\"reference-given-names\">GER</span>, <span class=\"reference-surname\">Chadwick</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mann</span> <span class=\"reference-given-names\">WN</span>. <span class=\"citation-label\">82.\\u2002</span> <span class=\"reference-year\">1978</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Hippocratic Writings</span></span> Harmondsworth: Penguin\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&amp;author=GER+Lloyd&amp;author=J+Chadwick&amp;author=WN+Mann&amp;publication_year=1978&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B83\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lovasi</span> <span class=\"reference-given-names\">GS</span>, <span class=\"reference-surname\">O\\'Neil-Dunne</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Lu</span> <span class=\"reference-given-names\">JW</span>, <span class=\"reference-surname\">Sheehan</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Perzanowski</span> <span class=\"reference-given-names\">MS</span>. <span class=\"citation-label\">83.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Perspect.</span></span> <span class=\"reference-volume\">121</span>:<span class=\"reference-fpage\">494–</span><span class=\"reference-lpage\">500</span> 00e1–6 \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&amp;author=GS+Lovasi&amp;author=JP+O%27Neil-Dunne&amp;author=JW+Lu&amp;author=D+Sheehan&amp;author=MS+Perzanowski&amp;journal=Environ.+Health+Perspect.&amp;volume=121&amp;pages=494-500&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B84\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">84.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Is green space in the living environment associated with people\\'s feelings of social safety?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">1763–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&amp;author=J+Maas&amp;author=P+Spreeuwenberg&amp;author=M+van+Winsum-Westra&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=PP+Groenewegen&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=1763-77&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B85\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SM</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">85.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Social contacts as a possible mechanism behind the relation between green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">586–</span><span class=\"reference-lpage\">95</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&amp;author=J+Maas&amp;author=SM+van+Dillen&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Health+Place&amp;volume=15&amp;pages=586-95&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B86\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Schellevis</span> <span class=\"reference-given-names\">FG</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">86.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Morbidity is related to a green living environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">967–</span><span class=\"reference-lpage\">73</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;author=FG+Schellevis&amp;author=PP+Groenewegen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=63&amp;pages=967-73&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B87\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">87.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Green space, urbanity, and health: How strong is the relation?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">60</span>:<span class=\"reference-fpage\">587–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=60&amp;pages=587-92&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B88\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">88.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">8</span>:<span class=\"reference-fpage\">206</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=P+Spreeuwenberg&amp;author=PP+Groenewegen&amp;journal=BMC+Public+Health&amp;volume=8&amp;pages=206&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B89\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maller</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Townsend</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">St Leger</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Henderson-Wilson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Pryor</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">89.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context</span></span> Melbourne, Aust.: Deakin Univ.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&amp;author=C+Maller&amp;author=M+Townsend&amp;author=L+St+Leger&amp;author=C+Henderson-Wilson&amp;author=A+Pryor&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B90\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCormack</span> <span class=\"reference-given-names\">GR</span>, <span class=\"reference-surname\">Rock</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Toohey</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Hignell</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">90.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">712–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&amp;author=GR+McCormack&amp;author=M+Rock&amp;author=AM+Toohey&amp;author=D+Hignell&amp;journal=Health+Place&amp;volume=16&amp;pages=712-26&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B91\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCurdy</span> <span class=\"reference-given-names\">LE</span>, <span class=\"reference-surname\">Winterbottom</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Mehta</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Roberts</span> <span class=\"reference-given-names\">JR</span>. <span class=\"citation-label\">91.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Using nature and outdoor activity to improve children\\'s health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Curr. Probl. Pediatr. Adolesc. Health Care</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&amp;author=LE+McCurdy&amp;author=KE+Winterbottom&amp;author=SS+Mehta&amp;author=JR+Roberts&amp;journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&amp;volume=40&amp;pages=102-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B92\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">92.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Is physical activity in natural environments better for mental health than physical activity in other environments?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">130–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=91&amp;pages=130-34&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B93\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">93.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Greenspace, urbanity and health: relationships in England. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">61</span>:<span class=\"reference-fpage\">681–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=61&amp;pages=681-83&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B94\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">94.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Effect of exposure to natural environment on health inequalities: an observational population study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">372</span>:<span class=\"reference-fpage\">1655–</span><span class=\"reference-lpage\">60</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=Lancet&amp;volume=372&amp;pages=1655-60&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B95\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitrione</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">95.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Therapeutic responses to natural environments: using gardens to improve health care. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Minn. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&amp;author=S+Mitrione&amp;journal=Minn.+Med.&amp;volume=91&amp;pages=31-34&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B96\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Muñoz</span> <span class=\"reference-given-names\">S-A</span>. <span class=\"citation-label\">96.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Children in the Outdoors: A Literature Review</span></span> Forres, Scotl.: Sustain. Dev. Res. Cent.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&amp;author=S-A+Mu%C3%B1oz&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B97\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nieminen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Martelin</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Koskinen</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Aro</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Alanen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hyyppä</span> <span class=\"reference-given-names\">MT</span>. <span class=\"citation-label\">97.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social capital as a determinant of self-rated health and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Public Health</span></span> <span class=\"reference-volume\">55</span>:<span class=\"reference-fpage\">531–</span><span class=\"reference-lpage\">42</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&amp;author=T+Nieminen&amp;author=T+Martelin&amp;author=S+Koskinen&amp;author=H+Aro&amp;author=E+Alanen&amp;author=MT+Hyypp%C3%A4&amp;journal=Int.+J.+Public+Health&amp;volume=55&amp;pages=531-42&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B98\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Sangster</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Gallis</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">98.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests, Trees and Human Health</span></span> Dordrecht: Springer\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&amp;author=K+Nilsson&amp;author=M+Sangster&amp;author=C+Gallis&amp;author=T+Hartig&amp;author=S+de+Vries&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B99\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">ME</span>, <span class=\"reference-surname\">Berglund</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">99.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Soundscape quality in suburban green areas and city parks. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Acta Acustica United Acustica</span></span> <span class=\"reference-volume\">92</span>:<span class=\"reference-fpage\">903–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&amp;author=ME+Nilsson&amp;author=B+Berglund&amp;journal=Acta+Acustica+United+Acustica&amp;volume=92&amp;pages=903-11&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B100\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>, <span class=\"reference-surname\">Crane</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Stevens</span> <span class=\"reference-given-names\">JC</span>. <span class=\"citation-label\">100.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Air pollution removal by urban trees and shrubs in the United States. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">115–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&amp;author=DJ+Nowak&amp;author=DE+Crane&amp;author=JC+Stevens&amp;journal=Urban+For.+Urban+Green.&amp;volume=4&amp;pages=115-23&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B101\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Olmsted</span> <span class=\"reference-given-names\">FL</span>. <span class=\"citation-label\">101.\\u2002</span> <span class=\"reference-year\">1970 (1870)</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Public Parks and the Enlargement of Towns</span></span> New York: Arno (Cambridge, MA: Riverside)\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&amp;author=FL+Olmsted&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B102\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Orwell</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Burchett</span> <span class=\"reference-given-names\">MD</span>, <span class=\"reference-surname\">Tarran</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Torpy</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">102.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Water Air Soil Poll.</span></span> <span class=\"reference-volume\">177</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&amp;author=RL+Orwell&amp;author=RA+Wood&amp;author=MD+Burchett&amp;author=J+Tarran&amp;author=F+Torpy&amp;journal=Water+Air+Soil+Poll.&amp;volume=177&amp;pages=59-80&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B103\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Paoletti</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Bardelli</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Giovannini</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Pecchioli</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">103.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Air quality impact of an urban park over time. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Procedia Environ. Sci.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">10–</span><span class=\"reference-lpage\">16</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&amp;author=E+Paoletti&amp;author=T+Bardelli&amp;author=G+Giovannini&amp;author=L+Pecchioli&amp;journal=Procedia+Environ.+Sci.&amp;volume=4&amp;pages=10-16&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B104\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Powell</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Paluch</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Blair</span> <span class=\"reference-given-names\">SN</span>. <span class=\"citation-label\">104.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Physical activity for health: What Kind? How much? How Intense? On Top of What?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">349–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&amp;author=KE+Powell&amp;author=AE+Paluch&amp;author=SN+Blair&amp;journal=Annu.+Rev.+Public+Health&amp;volume=32&amp;pages=349-65&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B105\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Peacock</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Sellens</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Griffin</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">105.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The mental and physical health outcomes of green exercise. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Environ. Health Res.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">319–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&amp;author=J+Pretty&amp;author=J+Peacock&amp;author=M+Sellens&amp;author=M+Griffin&amp;journal=Int.+J.+Environ.+Health+Res.&amp;volume=15&amp;pages=319-37&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B106\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Proctor</span> <span class=\"reference-given-names\">JD</span>. <span class=\"citation-label\">106.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> The social construction of nature: relativist accusations, pragmatist and critical realist responses. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Assoc. Am. Geogr.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">352–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&amp;author=JD+Proctor&amp;journal=Ann.+Assoc.+Am.+Geogr.&amp;volume=88&amp;pages=352-76&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B107\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">107.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Gender differences in relationships between urban green space and health in the United Kingdom. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">71</span>:<span class=\"reference-fpage\">568–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=71&amp;pages=568-75&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B108\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Astell-Burt</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">108.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Green cities and health: a question of scale?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">160–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;author=T+Hartig&amp;author=S+de+Vries&amp;author=T+Astell-Burt&amp;author=H+Frumkin&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=66&amp;pages=160-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B109\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Pearce</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kingham</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">109.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Role of physical activity in the relationship between urban green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">127</span>:<span class=\"reference-fpage\">318–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&amp;author=EA+Richardson&amp;author=J+Pearce&amp;author=R+Mitchell&amp;author=S+Kingham&amp;journal=Public+Health&amp;volume=127&amp;pages=318-24&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B110\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rios</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Aiken</span> <span class=\"reference-given-names\">LS</span>, <span class=\"reference-surname\">Zautra</span> <span class=\"reference-given-names\">AJ</span>. <span class=\"citation-label\">110.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Behav. Med.</span></span> <span class=\"reference-volume\">43</span>:<span class=\"reference-fpage\">50–</span><span class=\"reference-lpage\">61</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&amp;author=R+Rios&amp;author=LS+Aiken&amp;author=AJ+Zautra&amp;journal=Ann.+Behav.+Med.&amp;volume=43&amp;pages=50-61&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B111\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rose</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">111.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Sick individuals and sick populations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Epidemiol.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&amp;author=G+Rose&amp;journal=Int.+J.+Epidemiol.&amp;volume=30&amp;pages=427-32&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B112\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sartelet</span> <span class=\"reference-given-names\">KN</span>, <span class=\"reference-surname\">Couvidat</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Seigneur</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roustan</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">112.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Impact of biogenic emissions on air quality over Europe and North America. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">53</span>:<span class=\"reference-fpage\">131–</span><span class=\"reference-lpage\">41</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&amp;author=KN+Sartelet&amp;author=F+Couvidat&amp;author=C+Seigneur&amp;author=Y+Roustan&amp;journal=Atmos.+Environ.&amp;volume=53&amp;pages=131-41&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B113\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Setälä</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Viippola</span> <span class=\"reference-given-names\">V</span>, <span class=\"reference-surname\">Rantalainen</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Pennanen</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Yli-Pelkonen</span> <span class=\"reference-given-names\">V</span>. <span class=\"citation-label\">113.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Does urban vegetation mitigate air pollution in northern conditions?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">183</span>:<span class=\"reference-fpage\">104–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&amp;author=H+Set%C3%A4l%C3%A4&amp;author=V+Viippola&amp;author=AL+Rantalainen&amp;author=A+Pennanen&amp;author=V+Yli-Pelkonen&amp;journal=Environ.+Pollut.&amp;volume=183&amp;pages=104-12&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B114\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Simpson</span> <span class=\"reference-given-names\">JR</span>, <span class=\"reference-surname\">McPherson</span> <span class=\"reference-given-names\">EG</span>. <span class=\"citation-label\">114.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">69–</span><span class=\"reference-lpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&amp;author=JR+Simpson&amp;author=EG+McPherson&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=69-74&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B115\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">115.\\u2002</span> <span class=\"reference-year\">1988</span>. <span class=\"reference-article-title\"> Perception and aesthetics of the urban environment: review of the role of vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">106</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&amp;author=RC+Smardon&amp;journal=Landsc.+Urban+Plann.&amp;volume=15&amp;pages=85-106&amp;publication_year=1988&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B116\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Van Gemerden</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">116.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&amp;author=H+Staats&amp;author=E+Van+Gemerden&amp;author=T+Hartig&amp;journal=Leis.+Sci.&amp;volume=32&amp;pages=401-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B117\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Stigsdotter</span> <span class=\"reference-given-names\">UK</span>, <span class=\"reference-surname\">Ekholm</span> <span class=\"reference-given-names\">O</span>, <span class=\"reference-surname\">Schipperijn</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Toftager</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Kamper-Jørgensen</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Randrup</span> <span class=\"reference-given-names\">TB</span>. <span class=\"citation-label\">117.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">411–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&amp;author=UK+Stigsdotter&amp;author=O+Ekholm&amp;author=J+Schipperijn&amp;author=M+Toftager&amp;author=F+Kamper-J%C3%B8rgensen&amp;author=TB+Randrup&amp;journal=Scand.+J.+Public+Health&amp;volume=38&amp;pages=411-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B118\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sugiyama</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Leslie</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Owen</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">118.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">62</span>:<span class=\"reference-fpage\">e9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&amp;author=T+Sugiyama&amp;author=E+Leslie&amp;author=B+Giles-Corti&amp;author=N+Owen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=62&amp;pages=e9&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B119\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Takano</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Nakamura</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Watanabe</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">119.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">56</span>:<span class=\"reference-fpage\">913–</span><span class=\"reference-lpage\">18</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&amp;author=T+Takano&amp;author=K+Nakamura&amp;author=M+Watanabe&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=56&amp;pages=913-18&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B120\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tallis</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Sinnett</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">120.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">38</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&amp;author=M+Tallis&amp;author=G+Taylor&amp;author=D+Sinnett&amp;author=P+Freer-Smith&amp;journal=Landsc.+Urban+Plann.&amp;volume=103&amp;pages=129-38&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B121\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>. <span class=\"citation-label\">121.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Children with attention deficits concentrate better after walk in the park. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Atten. Disord.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">402–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;journal=J.+Atten.+Disord.&amp;volume=12&amp;pages=402-9&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B122\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">122.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Views of nature and self-discipline: evidence from inner city children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">49–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=J.+Environ.+Psychol.&amp;volume=22&amp;pages=49-63&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B123\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Thompson Coon</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Boddy</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Stein</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Whear</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Depledge</span> <span class=\"reference-given-names\">MH</span>. <span class=\"citation-label\">123.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">1761–</span><span class=\"reference-lpage\">72</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&amp;author=J+Thompson+Coon&amp;author=K+Boddy&amp;author=K+Stein&amp;author=R+Whear&amp;author=J+Barton&amp;author=MH+Depledge&amp;journal=Environ.+Sci.+Technol.&amp;volume=45&amp;pages=1761-72&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B124\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tsunetsugu</span> <span class=\"reference-given-names\">Y</span>, <span class=\"reference-surname\">Park</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Miyazaki</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">124.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Prevent. Med.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">27–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&amp;author=Y+Tsunetsugu&amp;author=B+Park&amp;author=Y+Miyazaki&amp;journal=Environ.+Health+Prevent.+Med.&amp;volume=15&amp;pages=27-37&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B125\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">125.\\u2002</span> <span class=\"reference-year\">1979</span>. <span class=\"reference-article-title\"> Visual landscapes and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Res.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&amp;author=RS+Ulrich&amp;journal=Landsc.+Res.&amp;volume=4&amp;pages=17-23&amp;publication_year=1979&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B126\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">126.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Aesthetic and affective response to natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Human Behaviour and Environment: Advances in Theory and Research.</span></span> Volume\\n<span class=\"reference-volume\">6</span> <span class=\"reference-source\"><span class=\"reference-italic\">Behaviour and the Natural Environment</span></span>, ed. I\\nAltman, JF Wohlwill <span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">125</span> New York: Plenum\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&amp;author=RS+Ulrich&amp;journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&amp;pages=85-125&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B127\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Simons</span> <span class=\"reference-given-names\">RF</span>, <span class=\"reference-surname\">Losito</span> <span class=\"reference-given-names\">BD</span>, <span class=\"reference-surname\">Fiorito</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Miles</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Zelson</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">127.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Stress recovery during exposure to natural and urban environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">201–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&amp;author=RS+Ulrich&amp;author=RF+Simons&amp;author=BD+Losito&amp;author=E+Fiorito&amp;author=MA+Miles&amp;author=M+Zelson&amp;journal=J.+Environ.+Psychol.&amp;volume=11&amp;pages=201-30&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B128\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Cauwenberg</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">De Bourdeaudhuij</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">De Meester</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Van Dyck</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Salmon</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">128.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Relationship between the physical environment and physical activity in older adults: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">458–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&amp;author=J+Van+Cauwenberg&amp;author=I+De+Bourdeaudhuij&amp;author=F+De+Meester&amp;author=D+Van+Dyck&amp;author=J+Salmon&amp;journal=Health+Place&amp;volume=17&amp;pages=458-69&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B129\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Custers</span> <span class=\"reference-given-names\">MHG</span>. <span class=\"citation-label\">129.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Gardening promotes neuroendocrine and affective restoration from stress. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Health Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&amp;author=AE+Van+den+Berg&amp;author=MHG+Custers&amp;journal=J.+Health+Psychol.&amp;volume=16&amp;pages=3-11&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B130\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">130.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Green space as a buffer between stressful life events and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">70</span>:<span class=\"reference-fpage\">1203–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&amp;author=AE+Van+den+Berg&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Soc.+Sci.+Med.&amp;volume=70&amp;pages=1203-10&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B131\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>. <span class=\"citation-label\">131.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health</span></span> <span class=\"reference-volume\">9</span>:<span class=\"reference-fpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&amp;author=AE+Van+den+Berg&amp;author=M+van+Winsum-Westra&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;journal=Environ.+Health&amp;volume=9&amp;pages=74&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B132\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Herzele</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Podesta</span> <span class=\"reference-given-names\">MTC</span>, <span class=\"reference-surname\">van Zon</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">132.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: the challenge of linking practice and research. </span> See Ref. 98 <span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B133\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Montarzino</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">133.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> The childhood factor: adult visits to green places and the significance of childhood experience. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">111–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&amp;author=C+Ward+Thompson&amp;author=P+Aspinall&amp;author=A+Montarzino&amp;journal=Environ.+Behav.&amp;volume=40&amp;pages=111-43&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B134\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roe</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Clow</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Miller</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">134.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">105</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">29</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&amp;author=C+Ward+Thompson&amp;author=J+Roe&amp;author=P+Aspinall&amp;author=R+Mitchell&amp;author=A+Clow&amp;author=D+Miller&amp;journal=Landsc.+Urban+Plann.&amp;volume=105&amp;pages=221-29&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B135\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">135.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Nearby nature—a buffer of life stress among rural children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">311–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&amp;author=NM+Wells&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=35&amp;pages=311-30&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B136\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Lekies</span> <span class=\"reference-given-names\">KS</span>. <span class=\"citation-label\">136.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Nature and the life course: pathways from childhood nature experiences to adult environmentalism. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Child. Youth Environ.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&amp;author=NM+Wells&amp;author=KS+Lekies&amp;journal=Child.+Youth+Environ.&amp;volume=16&amp;pages=1-24&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B137\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Whitelaw</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">137.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Crit. Public Health</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&amp;author=S+Whitelaw&amp;journal=Crit.+Public+Health&amp;volume=22&amp;pages=427-40&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B138\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">138.\\u2002</span><span class=\"reference-collab\">WHO (World Health Organ.)</span> <span class=\"reference-year\">1946</span>. <span class=\"reference-article-title\"> <span class=\"reference-italic\">Preamble to the Constitution of the World Health Organization</span> as adopted by the International Health Conference. </span> New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&amp;publication_year=1946&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B139\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wilson</span> <span class=\"reference-given-names\">SJ</span>, <span class=\"reference-surname\">Lipsey</span> <span class=\"reference-given-names\">MW</span>. <span class=\"citation-label\">139.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eval. Program Plann.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&amp;author=SJ+Wilson&amp;author=MW+Lipsey&amp;journal=Eval.+Program+Plann.&amp;volume=23&amp;pages=1-12&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B140\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Yoo</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Kwon</span> <span class=\"reference-given-names\">YJ</span>, <span class=\"reference-surname\">Son</span> <span class=\"reference-given-names\">KC</span>, <span class=\"reference-surname\">Kays</span> <span class=\"reference-given-names\">SJ</span>. <span class=\"citation-label\">140.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Am. Soc. Hort. Sci.</span></span> <span class=\"reference-volume\">131</span>:<span class=\"reference-fpage\">452–</span><span class=\"reference-lpage\">58</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&amp;author=MH+Yoo&amp;author=YJ+Kwon&amp;author=KC+Son&amp;author=SJ+Kays&amp;journal=J.+Am.+Soc.+Hort.+Sci.&amp;volume=131&amp;pages=452-58&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"B141\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Zick</span> <span class=\"reference-given-names\">CD</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">KR</span>, <span class=\"reference-surname\">Kowaleski-Jones</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Uno</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Merrill</span> <span class=\"reference-given-names\">BJ</span>. <span class=\"citation-label\">141.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Harvesting more than vegetables: the potential weight control benefits of community gardening. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">e1–</span><span class=\"reference-lpage\">6</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&amp;author=CD+Zick&amp;author=KR+Smith&amp;author=L+Kowaleski-Jones&amp;author=C+Uno&amp;author=BJ+Merrill&amp;journal=Am.+J.+Public+Health&amp;volume=103&amp;pages=e1-6&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li></ol></span><div class=\"clearer\">&nbsp;</div></div>\\n</div>\\n\\n<div id=\"article-level-0-figs-and-tables\" class=\"bm\">\\n\\n</div>\\n\\n<div id=\"article-level-0-end-metadata\" class=\"fm\">\\n\\n</div></div></div>\\n\\n</div>\\n<div id=\"referenceContainer\" class=\"references hidden-js-div tabbedsection tab-pane\">\\n<div id=\"referencedetails\">\\n<template id=\"js-morelikethis-link\"></template>\\n<template id=\"js-webofscience-link\" class=\"externallink\"></template>\\n<template id=\"js-pubmed-link\"></template>\\n<p class=\"description\"><span class=\"tl-main-part\">Literature Cited</span></p>\\n<ol id=\"articlereference\" class=\"articlereference-vancouver\">\\n<li class=\"refbody\" id=\"ref-B1\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Akbari</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Kurn</span> <span class=\"reference-given-names\">DM</span>, <span class=\"reference-surname\">Bretz</span> <span class=\"reference-given-names\">SE</span>, <span class=\"reference-surname\">Hanford</span> <span class=\"reference-given-names\">JW</span>. <span class=\"citation-label\">1.\\u2002</span> <span class=\"reference-year\">1997</span>. <span class=\"reference-article-title\"> Peak power and cooling energy savings of shade trees. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Energy Build.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">139–</span><span class=\"reference-lpage\">48</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Peak+power+and+cooling+energy+savings+of+shade+trees&amp;author=H+Akbari&amp;author=DM+Kurn&amp;author=SE+Bretz&amp;author=JW+Hanford&amp;journal=Energy+Build.&amp;volume=25&amp;pages=139-48&amp;publication_year=1997&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B2\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Annerstedt</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Währborg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">2.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Nature-assisted therapy: systematic review of controlled and observational studies. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">39</span>:<span class=\"reference-fpage\">371–</span><span class=\"reference-lpage\">88</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature-assisted+therapy%3A+systematic+review+of+controlled+and+observational+studies&amp;author=M+Annerstedt&amp;author=P+W%C3%A4hrborg&amp;journal=Scand.+J.+Public+Health&amp;volume=39&amp;pages=371-88&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B3\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">3.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> What is the best dose of nature and green exercise for improving mental health? A multi-study analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3947–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=What+is+the+best+dose+of+nature+and+green+exercise+for+improving+mental+health%3F+A+multi-study+analysis&amp;author=J+Barton&amp;author=J+Pretty&amp;journal=Environ.+Sci.+Technol.&amp;volume=44&amp;pages=3947-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B4\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Baum</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Ziersch</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Zhang</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Osborne</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">4.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Do perceived neighbourhood cohesion and safety contribute to neighbourhood differences in health?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">925–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Do+perceived+neighbourhood+cohesion+and+safety+contribute+to+neighbourhood+differences+in+health%3F&amp;author=FE+Baum&amp;author=AM+Ziersch&amp;author=G+Zhang&amp;author=K+Osborne&amp;journal=Health+Place&amp;volume=15&amp;pages=925-34&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B5\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bauman</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Reis</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">JC</span>, <span class=\"reference-surname\">Loos</span> <span class=\"reference-given-names\">RJ</span>, <span class=\"reference-surname\">Martin</span> <span class=\"reference-given-names\">BW</span>. <span class=\"citation-label\">5.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Correlates of physical activity: Why are some people physically active and others not?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">380</span>:<span class=\"reference-fpage\">258–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Correlates+of+physical+activity%3A+Why+are+some+people+physically+active+and+others+not%3F&amp;author=AE+Bauman&amp;author=RS+Reis&amp;author=JF+Sallis&amp;author=JC+Wells&amp;author=RJ+Loos&amp;author=BW+Martin&amp;journal=Lancet&amp;volume=380&amp;pages=258-71&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B6\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beck</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Meyers</span> <span class=\"reference-given-names\">NM</span>. <span class=\"citation-label\">6.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Health enhancement and companion animal ownership. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">247–</span><span class=\"reference-lpage\">57</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+enhancement+and+companion+animal+ownership&amp;author=AM+Beck&amp;author=NM+Meyers&amp;journal=Annu.+Rev.+Public+Health&amp;volume=17&amp;pages=247-57&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B7\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Beckett</span> <span class=\"reference-given-names\">KP</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">PH</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">7.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> The capture of particulate pollution by trees at five contrasting urban sites. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Arboric. J.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">209–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+capture+of+particulate+pollution+by+trees+at+five+contrasting+urban+sites&amp;author=KP+Beckett&amp;author=PH+Freer-Smith&amp;author=G+Taylor&amp;journal=Arboric.+J.&amp;volume=24&amp;pages=209-30&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B8\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bedimo-Rung</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Mowen</span> <span class=\"reference-given-names\">AJ</span>, <span class=\"reference-surname\">Cohen</span> <span class=\"reference-given-names\">DA</span>. <span class=\"citation-label\">8.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The significance of parks to physical activity and public health: a conceptual model. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">159–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+significance+of+parks+to+physical+activity+and+public+health%3A+a+conceptual+model&amp;author=AL+Bedimo-Rung&amp;author=AJ+Mowen&amp;author=DA+Cohen&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=159-68&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B9\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Benjamin</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Winer</span> <span class=\"reference-given-names\">AM</span>. <span class=\"citation-label\">9.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Estimating the ozone-forming potential of urban trees and shrubs. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">53–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+ozone-forming+potential+of+urban+trees+and+shrubs&amp;author=MT+Benjamin&amp;author=AM+Winer&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=53-68&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B10\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bize</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Johnson</span> <span class=\"reference-given-names\">JA</span>, <span class=\"reference-surname\">Plotnikoff</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">10.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Physical activity level and health-related quality of life in the general adult population: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Prev. Med.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">15</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+level+and+health-related+quality+of+life+in+the+general+adult+population%3A+a+systematic+review&amp;author=R+Bize&amp;author=JA+Johnson&amp;author=RC+Plotnikoff&amp;journal=Prev.+Med.&amp;volume=45&amp;pages=401-15&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B11\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">LM</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">11.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> A systematic review of evidence for the added benefits to health of exposure to natural environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">10</span>:<span class=\"reference-fpage\">456</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+systematic+review+of+evidence+for+the+added+benefits+to+health+of+exposure+to+natural+environments&amp;author=DE+Bowler&amp;author=LM+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=BMC+Public+Health&amp;volume=10&amp;pages=456&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B12\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bowler</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Buyung-Ali</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knight</span> <span class=\"reference-given-names\">TM</span>, <span class=\"reference-surname\">Pullin</span> <span class=\"reference-given-names\">AS</span>. <span class=\"citation-label\">12.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Urban greening to cool towns and cities: a systematic review of the empirical evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">97</span>:<span class=\"reference-fpage\">147–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+greening+to+cool+towns+and+cities%3A+a+systematic+review+of+the+empirical+evidence&amp;author=DE+Bowler&amp;author=L+Buyung-Ali&amp;author=TM+Knight&amp;author=AS+Pullin&amp;journal=Landsc.+Urban+Plann.&amp;volume=97&amp;pages=147-55&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B13\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brack</span> <span class=\"reference-given-names\">CL</span>. <span class=\"citation-label\">13.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollution mitigation and carbon sequestration by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">116</span>:<span class=\"reference-fpage\">S195–</span><span class=\"reference-lpage\">200</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+mitigation+and+carbon+sequestration+by+an+urban+forest&amp;author=CL+Brack&amp;journal=Environ.+Pollut.&amp;volume=116&amp;pages=S195-200&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B14\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Branas</span> <span class=\"reference-given-names\">CC</span>, <span class=\"reference-surname\">Cheney</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">MacDonald</span> <span class=\"reference-given-names\">JM</span>, <span class=\"reference-surname\">Tam</span> <span class=\"reference-given-names\">VW</span>, <span class=\"reference-surname\">Jackson</span> <span class=\"reference-given-names\">TD</span>, <span class=\"reference-surname\">Ten Have</span> <span class=\"reference-given-names\">TR</span>. <span class=\"citation-label\">14.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> A difference-in-differences analysis of health, safety, and greening vacant urban space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Epidemiol.</span></span> <span class=\"reference-volume\">174</span>:<span class=\"reference-fpage\">1296–</span><span class=\"reference-lpage\">306</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=A+difference-in-differences+analysis+of+health%2C+safety%2C+and+greening+vacant+urban+space&amp;author=CC+Branas&amp;author=RA+Cheney&amp;author=JM+MacDonald&amp;author=VW+Tam&amp;author=TD+Jackson&amp;author=TR+Ten+Have&amp;journal=Am.+J.+Epidemiol.&amp;volume=174&amp;pages=1296-306&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B15\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bratman</span> <span class=\"reference-given-names\">GN</span>, <span class=\"reference-surname\">Hamilton</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Daily</span> <span class=\"reference-given-names\">GC</span>. <span class=\"citation-label\">15.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The impacts of nature experience on human cognitive function and mental health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. N.Y. Acad. Sci.</span></span> <span class=\"reference-volume\">1249</span>:<span class=\"reference-fpage\">118–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+impacts+of+nature+experience+on+human+cognitive+function+and+mental+health&amp;author=GN+Bratman&amp;author=JP+Hamilton&amp;author=GC+Daily&amp;journal=Ann.+N.Y.+Acad.+Sci.&amp;volume=1249&amp;pages=118-36&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B16\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Bringslimark</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>. <span class=\"citation-label\">16.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> The psychological benefits of indoor plants: a critical review of the experimental literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">422–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+psychological+benefits+of+indoor+plants%3A+a+critical+review+of+the+experimental+literature&amp;author=T+Bringslimark&amp;author=T+Hartig&amp;author=GG+Patil&amp;journal=J.+Environ.+Psychol.&amp;volume=29&amp;pages=422-33&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B17\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Broekhuizen</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">SI</span>, <span class=\"reference-surname\">Pierik</span> <span class=\"reference-given-names\">FH</span>. <span class=\"citation-label\">17.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Aging in a Green Living Environment: A Systematic Review of the Literature.</span></span> TNO rep. R10154 Leiden: TNO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Aging+in+a+Green+Living+Environment%3A+A+Systematic+Review+of+the+Literature.&amp;author=K+Broekhuizen&amp;author=SI+de+Vries&amp;author=FH+Pierik&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B18\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Brooks</span> <span class=\"reference-given-names\">GD</span>, <span class=\"reference-surname\">Bush</span> <span class=\"reference-given-names\">RK</span>. <span class=\"citation-label\">18.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Allergens and other factors important in atopic disease. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Patterson\\'s Allergic Diseases</span></span> LC Grammer, PA Greenberger <span class=\"reference-fpage\">73–</span><span class=\"reference-lpage\">103</span> Philadelphia: Lippincott, Williams &amp; Wilkins, 7th ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allergens+and+other+factors+important+in+atopic+disease&amp;author=GD+Brooks&amp;author=RK+Bush&amp;journal=Patterson%27s+Allergic+Diseases&amp;pages=73-103&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B19\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cariñanos</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Casares-Porcel</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">19.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Urban green zones and related pollen allergy: a review. Some guidelines for designing spaces with low allergy impact. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">101</span>:<span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">14</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+green+zones+and+related+pollen+allergy%3A+a+review.+Some+guidelines+for+designing+spaces+with+low+allergy+impact&amp;author=P+Cari%C3%B1anos&amp;author=M+Casares-Porcel&amp;journal=Landsc.+Urban+Plann.&amp;volume=101&amp;pages=205-14&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B20\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Chameides</span> <span class=\"reference-given-names\">WL</span>, <span class=\"reference-surname\">Lindsay</span> <span class=\"reference-given-names\">RW</span>, <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Kiang</span> <span class=\"reference-given-names\">CS</span>. <span class=\"citation-label\">20.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-article-title\"> The role of biogenic hydrocarbons in urban photochemical smog—Atlanta as a case-study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">241</span>:<span class=\"reference-fpage\">1473–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+biogenic+hydrocarbons+in+urban+photochemical+smog%E2%80%94Atlanta+as+a+case-study&amp;author=WL+Chameides&amp;author=RW+Lindsay&amp;author=J+Richardson&amp;author=CS+Kiang&amp;journal=Science&amp;volume=241&amp;pages=1473-75&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B21\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Cimprich</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">21.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Development of an intervention to restore attention in cancer patients. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Cancer Nurs.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">83–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Development+of+an+intervention+to+restore+attention+in+cancer+patients&amp;author=B+Cimprich&amp;journal=Cancer+Nurs.&amp;volume=16&amp;pages=83-92&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B22\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Colfer</span> <span class=\"reference-given-names\">CJP</span>, <span class=\"reference-surname\">Sheil</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Kishi</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">22.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests and Human Health: Assessing the Evidence</span></span> Bogor, Indones.: Cent. Int. For. Res <a target=\"xrefwindow\" href=\"http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf\"><span class=\"reference-bold\">http://www.cifor.org/publications/pdf_files/OccPapers/OP-45.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests+and+Human+Health%3A+Assessing+the+Evidence&amp;author=CJP+Colfer&amp;author=D+Sheil&amp;author=M+Kishi&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B23\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Day</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">23.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Choosing a house: the relationship between dwelling type, perception of privacy and residential satisfaction. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Plan Educ. Res.</span></span> <span class=\"reference-volume\">19</span>:<span class=\"reference-fpage\">265–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Choosing+a+house%3A+the+relationship+between+dwelling+type%2C+perception+of+privacy+and+residential+satisfaction&amp;author=LL+Day&amp;journal=J.+Plan+Educ.+Res.&amp;volume=19&amp;pages=265-75&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B24\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Claßen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Eigenheer-Hug</span> <span class=\"reference-given-names\">S-M</span>, <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">24.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Contributions of natural environments to physical activity. </span> See Ref. 98 <span class=\"reference-fpage\">205–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Contributions+of+natural+environments+to+physical+activity&amp;author=S+de+Vries&amp;author=T+Cla%C3%9Fen&amp;author=S-M+Eigenheer-Hug&amp;author=K+Korpela&amp;author=J+Maas&amp;pages=205-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B25\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">25.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Streetscape greenery and health: stress, social cohesion and physical activity as mediators. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">94</span>:<span class=\"reference-fpage\">26–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Streetscape+greenery+and+health%3A+stress%2C+social+cohesion+and+physical+activity+as+mediators&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Soc.+Sci.+Med.&amp;volume=94&amp;pages=26-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B26\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">26.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Natural environments—healthy environments? An exploratory analysis of the relationship between greenspace and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">1717–</span><span class=\"reference-lpage\">31</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Natural+environments%E2%80%94healthy+environments%3F+An+exploratory+analysis+of+the+relationship+between+greenspace+and+health&amp;author=S+de+Vries&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=P+Spreeuwenberg&amp;journal=Environ.+Plann.+A&amp;volume=35&amp;pages=1717-31&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B27\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">DellaValle</span> <span class=\"reference-given-names\">CT</span>, <span class=\"reference-surname\">Triche</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Leaderer</span> <span class=\"reference-given-names\">BP</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">ML</span>. <span class=\"citation-label\">27.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Effects of ambient pollen concentrations on frequency and severity of asthma symptoms among asthmatic children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Epidemiology</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">55–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+ambient+pollen+concentrations+on+frequency+and+severity+of+asthma+symptoms+among+asthmatic+children&amp;author=CT+DellaValle&amp;author=EW+Triche&amp;author=BP+Leaderer&amp;author=ML+Bell&amp;journal=Epidemiology&amp;volume=23&amp;pages=55-63&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B28\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Den Hertog</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Bronkhorst</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Moerman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Van Wilgenburg</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">28.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-source\"><span class=\"reference-italic\">De Gezonde Wijk. Een onderzoek naar de relatie tussen fysieke wijkkenmerken en lichamelijke activiteit</span> [<span class=\"reference-italic\">The Healthy District. A Study on the Relationship Between Physical Characteristics of a District and Physical Activity</span>].</span> Amsterdam: EMGO Inst.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=De+Gezonde+Wijk.+Een+onderzoek+naar+de+relatie+tussen+fysieke+wijkkenmerken+en+lichamelijke+activiteit+%5BThe+Healthy+District.+A+Study+on+the+Relationship+Between+Physical+Characteristics+of+a+District+and+Physical+Activity%5D.&amp;author=F+Den+Hertog&amp;author=M+Bronkhorst&amp;author=M+Moerman&amp;author=R+Van+Wilgenburg&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B29\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Sallis</span> <span class=\"reference-given-names\">JF</span>, <span class=\"reference-surname\">Kerr</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Lee</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Rosenberg</span> <span class=\"reference-given-names\">DE</span>. <span class=\"citation-label\">29.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Neighborhood environment and physical activity among youth: a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">442–</span><span class=\"reference-lpage\">55</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+environment+and+physical+activity+among+youth%3A+a+review&amp;author=D+Ding&amp;author=JF+Sallis&amp;author=J+Kerr&amp;author=S+Lee&amp;author=DE+Rosenberg&amp;journal=Am.+J.+Prev.+Med.&amp;volume=41&amp;pages=442-55&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B30\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Domm</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Drew</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Greene</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Ripley</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Tordesillas</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">30.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Recommended urban forest mixtures to optimize selected environmental benefits. </span> <span class=\"reference-source\"><span class=\"reference-italic\">EnviroNews: Int. Soc. Environ. Bot.</span></span> <span class=\"reference-volume\">14</span>:<span class=\"reference-fpage\">7–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Recommended+urban+forest+mixtures+to+optimize+selected+environmental+benefits&amp;author=J+Domm&amp;author=R+Drew&amp;author=A+Greene&amp;author=E+Ripley&amp;author=R+Smardon&amp;author=J+Tordesillas&amp;journal=EnviroNews%3A+Int.+Soc.+Environ.+Bot.&amp;volume=14&amp;pages=7-10&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B31\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Donovan</span> <span class=\"reference-given-names\">GH</span>, <span class=\"reference-surname\">Prestemon</span> <span class=\"reference-given-names\">JP</span>. <span class=\"citation-label\">31.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The effect of trees on crime in Portland, Oregon. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+effect+of+trees+on+crime+in+Portland%2C+Oregon&amp;author=GH+Donovan&amp;author=JP+Prestemon&amp;journal=Environ.+Behav.&amp;volume=44&amp;pages=3-30&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B32\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Eid</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Overman</span> <span class=\"reference-given-names\">HG</span>, <span class=\"reference-surname\">Puga</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Turner</span> <span class=\"reference-given-names\">MA</span>. <span class=\"citation-label\">32.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Fat city: questioning the relationship between urban sprawl and obesity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Urban Econ.</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">385–</span><span class=\"reference-lpage\">404</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fat+city%3A+questioning+the+relationship+between+urban+sprawl+and+obesity&amp;author=J+Eid&amp;author=HG+Overman&amp;author=D+Puga&amp;author=MA+Turner&amp;journal=J.+Urban+Econ.&amp;volume=63&amp;pages=385-404&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B33\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Engel</span> <span class=\"reference-given-names\">GL</span>. <span class=\"citation-label\">33.\\u2002</span> <span class=\"reference-year\">1977</span>. <span class=\"reference-article-title\"> The need for a new medical model: a challenge for biomedicine. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">196</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+need+for+a+new+medical+model%3A+a+challenge+for+biomedicine&amp;author=GL+Engel&amp;journal=Science&amp;volume=196&amp;pages=129-36&amp;publication_year=1977&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B34\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Escobedo</span> <span class=\"reference-given-names\">FJ</span>, <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>. <span class=\"citation-label\">34.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Spatial heterogeneity and air pollution removal by an urban forest. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">90</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Spatial+heterogeneity+and+air+pollution+removal+by+an+urban+forest&amp;author=FJ+Escobedo&amp;author=DJ+Nowak&amp;journal=Landsc.+Urban+Plann.&amp;volume=90&amp;pages=102-10&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B35\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ferdinand</span> <span class=\"reference-given-names\">AO</span>, <span class=\"reference-surname\">Sen</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Rahurkar</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Engler</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Menachemi</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">35.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The relationship between built environments and physical activity: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">102</span>:<span class=\"reference-fpage\">e7–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+built+environments+and+physical+activity%3A+a+systematic+review&amp;author=AO+Ferdinand&amp;author=B+Sen&amp;author=S+Rahurkar&amp;author=S+Engler&amp;author=N+Menachemi&amp;journal=Am.+J.+Public+Health&amp;volume=102&amp;pages=e7-13&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B36\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Forrest</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kearns</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">36.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Social cohesion, social capital and the neighbourhood. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban Stud.</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">2125–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+cohesion%2C+social+capital+and+the+neighbourhood&amp;author=R+Forrest&amp;author=A+Kearns&amp;journal=Urban+Stud.&amp;volume=38&amp;pages=2125-43&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B37\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fowler</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">37.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Pollutant deposition and uptake by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Air Pollution and Plant Life</span></span> JNB Bell, M Treshow <span class=\"reference-fpage\">43–</span><span class=\"reference-lpage\">67</span> New York: Wiley, 2nd ed..\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollutant+deposition+and+uptake+by+vegetation&amp;author=D+Fowler&amp;journal=Air+Pollution+and+Plant+Life&amp;pages=43-67&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B38\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">38.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Creating sense of community: the role of public space. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Creating+sense+of+community%3A+the+role+of+public+space&amp;author=J+Francis&amp;author=B+Giles-Corti&amp;author=L+Wood&amp;author=M+Knuiman&amp;journal=J.+Environ.+Psychol.&amp;volume=32&amp;pages=401-9&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B39\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Francis</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">LJ</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">39.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Quality or quantity? Exploring the relationship between public open space attributes and mental health in Perth, Western Australia. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">74</span>:<span class=\"reference-fpage\">1570–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Quality+or+quantity%3F+Exploring+the+relationship+between+public+open+space+attributes+and+mental+health+in+Perth%2C+Western+Australia&amp;author=J+Francis&amp;author=LJ+Wood&amp;author=M+Knuiman&amp;author=B+Giles-Corti&amp;journal=Soc.+Sci.+Med.&amp;volume=74&amp;pages=1570-77&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B40\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Fraser</span> <span class=\"reference-given-names\">SDS</span>, <span class=\"reference-surname\">Lock</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">40.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Cycling for transport and public health: a systematic review of the effect of the environment on cycling. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eur. J. Public Health</span></span> <span class=\"reference-volume\">21</span>:<span class=\"reference-fpage\">738–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Cycling+for+transport+and+public+health%3A+a+systematic+review+of+the+effect+of+the+environment+on+cycling&amp;author=SDS+Fraser&amp;author=K+Lock&amp;journal=Eur.+J.+Public+Health&amp;volume=21&amp;pages=738-43&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B41\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frost</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Goins</span> <span class=\"reference-given-names\">RT</span>, <span class=\"reference-surname\">Hunter</span> <span class=\"reference-given-names\">RH</span>, <span class=\"reference-surname\">Hooker</span> <span class=\"reference-given-names\">SP</span>, <span class=\"reference-surname\">Bryant</span> <span class=\"reference-given-names\">LL</span>. <span class=\"citation-label\">41.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Effects of the built environment on physical activity of adults living in rural settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Health Promot.</span></span> <span class=\"reference-volume\">24</span>:<span class=\"reference-fpage\">267–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effects+of+the+built+environment+on+physical+activity+of+adults+living+in+rural+settings&amp;author=SS+Frost&amp;author=RT+Goins&amp;author=RH+Hunter&amp;author=SP+Hooker&amp;author=LL+Bryant&amp;journal=Am.+J.+Health+Promot.&amp;volume=24&amp;pages=267-83&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B42\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">42.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Beyond toxicity: human health and the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">234–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Beyond+toxicity%3A+human+health+and+the+natural+environment&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=20&amp;pages=234-40&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B43\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">43.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The evidence of nature and the nature of evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">44</span>:<span class=\"reference-fpage\">196–</span><span class=\"reference-lpage\">97</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+evidence+of+nature+and+the+nature+of+evidence&amp;author=H+Frumkin&amp;journal=Am.+J.+Prev.+Med.&amp;volume=44&amp;pages=196-97&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B44\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Galea</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Vlahov</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">44.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Urban health: evidence, challenges, and directions. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">341–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+health%3A+evidence%2C+challenges%2C+and+directions&amp;author=S+Galea&amp;author=D+Vlahov&amp;journal=Annu.+Rev.+Public+Health&amp;volume=26&amp;pages=341-65&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B45\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gatersleben</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Andrews</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">45.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> When walking in nature is not restorative—the role of prospect and refuge. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">20</span>:<span class=\"reference-fpage\">91–</span><span class=\"reference-lpage\">101</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=When+walking+in+nature+is+not+restorative%E2%80%94the+role+of+prospect+and+refuge&amp;author=B+Gatersleben&amp;author=M+Andrews&amp;journal=Health+Place&amp;volume=20&amp;pages=91-101&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B46\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Broomhall</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Knuiman</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Collins</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Douglas</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">46.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> Increasing walking: How important is distance to, attractiveness, and size of public open space?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Prev. Med.</span></span> <span class=\"reference-volume\">28</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Increasing+walking%3A+How+important+is+distance+to%2C+attractiveness%2C+and+size+of+public+open+space%3F&amp;author=B+Giles-Corti&amp;author=MH+Broomhall&amp;author=M+Knuiman&amp;author=C+Collins&amp;author=K+Douglas&amp;journal=Am.+J.+Prev.+Med.&amp;volume=28&amp;pages=169-76&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B47\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Gonzalez</span> <span class=\"reference-given-names\">MT</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Patil</span> <span class=\"reference-given-names\">GG</span>, <span class=\"reference-surname\">Martinsen</span> <span class=\"reference-given-names\">EW</span>, <span class=\"reference-surname\">Kirkevold</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">47.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Therapeutic horticulture in clinical depression: a prospective study of active components. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Adv. Nurs.</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">2002–</span><span class=\"reference-lpage\">13</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+horticulture+in+clinical+depression%3A+a+prospective+study+of+active+components&amp;author=MT+Gonzalez&amp;author=T+Hartig&amp;author=GG+Patil&amp;author=EW+Martinsen&amp;author=M+Kirkevold&amp;journal=J.+Adv.+Nurs.&amp;volume=66&amp;pages=2002-13&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B48\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">48.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> Nature experience in transactional perspective. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">25</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+experience+in+transactional+perspective&amp;author=T+Hartig&amp;journal=Landsc.+Urban+Plann.&amp;volume=25&amp;pages=17-36&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B49\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>, <span class=\"reference-surname\">Jamner</span> <span class=\"reference-given-names\">LD</span>, <span class=\"reference-surname\">Davis</span> <span class=\"reference-given-names\">DS</span>, <span class=\"reference-surname\">Gärling</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">49.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Tracking restoration in natural and urban field settings. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">109–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Tracking+restoration+in+natural+and+urban+field+settings&amp;author=T+Hartig&amp;author=GW+Evans&amp;author=LD+Jamner&amp;author=DS+Davis&amp;author=T+G%C3%A4rling&amp;journal=J.+Environ.+Psychol.&amp;volume=23&amp;pages=109-23&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B50\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Fransson</span> <span class=\"reference-given-names\">U</span>. <span class=\"citation-label\">50.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Leisure home ownership, access to nature, and health: a longitudinal study of urban residents in Sweden. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">82–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Leisure+home+ownership%2C+access+to+nature%2C+and+health%3A+a+longitudinal+study+of+urban+residents+in+Sweden&amp;author=T+Hartig&amp;author=U+Fransson&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=82-96&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B51\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Kylin</span> <span class=\"reference-given-names\">C</span>. <span class=\"citation-label\">51.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Residence in the social ecology of stress and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Soc. Iss.</span></span> <span class=\"reference-volume\">59</span>:<span class=\"reference-fpage\">611–</span><span class=\"reference-lpage\">36</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Residence+in+the+social+ecology+of+stress+and+restoration&amp;author=T+Hartig&amp;author=G+Johansson&amp;author=C+Kylin&amp;journal=J.+Soc.+Iss.&amp;volume=59&amp;pages=611-36&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B52\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Mang</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">52.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Restorative effects of natural environment experiences. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+effects+of+natural+environment+experiences&amp;author=T+Hartig&amp;author=M+Mang&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=23&amp;pages=3-26&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B53\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Hagerhall</span> <span class=\"reference-given-names\">CM</span>, <span class=\"reference-surname\">Tomalak</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">53.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: psychological, social and cultural processes. </span> See Ref. 98 <span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">68</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B54\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">54.\\u2002</span><span class=\"reference-collab\">Health Counc. Neth</span> <span class=\"reference-year\">2004</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Nature and Health: The Influence of Nature on Social, Psychological and Physical Well-Being.</span></span> The Hague: Health Counc. Neth., RMNO <a target=\"xrefwindow\" href=\"http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf\"><span class=\"reference-bold\">http://www.gezondheidsraad.nl/sites/default/files/Nature_and_health.pdf</span></a> \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+Health%3A+The+Influence+of+Nature+on+Social%2C+Psychological+and+Physical+Well-Being.&amp;publication_year=2004&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B55\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Heinen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">van Wee</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Maat</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">55.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Commuting by bicycle: an overview of the literature. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Transp. Rev.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">96</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Commuting+by+bicycle%3A+an+overview+of+the+literature&amp;author=E+Heinen&amp;author=B+van+Wee&amp;author=K+Maat&amp;journal=Transp.+Rev.&amp;volume=30&amp;pages=59-96&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B56\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Hillsdon</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Panter</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Foster</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">56.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The relationship between access and quality of urban green space with population physical activity. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">120</span>:<span class=\"reference-fpage\">1127–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+relationship+between+access+and+quality+of+urban+green+space+with+population+physical+activity&amp;author=M+Hillsdon&amp;author=J+Panter&amp;author=C+Foster&amp;author=A+Jones&amp;journal=Public+Health&amp;volume=120&amp;pages=1127-32&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B57\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Holt-Lunstad</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">TB</span>, <span class=\"reference-surname\">Layton</span> <span class=\"reference-given-names\">JB</span>. <span class=\"citation-label\">57.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social relationships and mortality risk: a meta-analytic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">PLoS Med.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">e1000316</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+relationships+and+mortality+risk%3A+a+meta-analytic+review&amp;author=J+Holt-Lunstad&amp;author=TB+Smith&amp;author=JB+Layton&amp;journal=PLoS+Med.&amp;volume=7&amp;pages=e1000316&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B58\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Home</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hunziker</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Bauer</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">58.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Psychosocial outcomes as motivations for visiting nearby urban green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">34</span>:<span class=\"reference-fpage\">350–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychosocial+outcomes+as+motivations+for+visiting+nearby+urban+green+spaces&amp;author=R+Home&amp;author=M+Hunziker&amp;author=N+Bauer&amp;journal=Leis.+Sci.&amp;volume=34&amp;pages=350-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B59\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Islam</span> <span class=\"reference-given-names\">MN</span>, <span class=\"reference-surname\">Rahman</span> <span class=\"reference-given-names\">K-S</span>, <span class=\"reference-surname\">Bahar</span> <span class=\"reference-given-names\">MM</span>, <span class=\"reference-surname\">Habib</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Ando</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hattori</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">59.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Pollution attenuation by roadside greenbelt in and around urban areas. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">460–</span><span class=\"reference-lpage\">64</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Pollution+attenuation+by+roadside+greenbelt+in+and+around+urban+areas&amp;author=MN+Islam&amp;author=K-S+Rahman&amp;author=MM+Bahar&amp;author=MA+Habib&amp;author=K+Ando&amp;author=N+Hattori&amp;journal=Urban+For.+Urban+Green.&amp;volume=11&amp;pages=460-64&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B60\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jahncke</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Hygge</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Halin</span> <span class=\"reference-given-names\">N</span>, <span class=\"reference-surname\">Green</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Dimberg</span> <span class=\"reference-given-names\">K</span>. <span class=\"citation-label\">60.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Open-plan office noise: cognitive performance and restoration. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">31</span>:<span class=\"reference-fpage\">373–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Open-plan+office+noise%3A+cognitive+performance+and+restoration&amp;author=H+Jahncke&amp;author=S+Hygge&amp;author=N+Halin&amp;author=AM+Green&amp;author=K+Dimberg&amp;journal=J.+Environ.+Psychol.&amp;volume=31&amp;pages=373-82&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B61\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Janssen</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">LeBlanc</span> <span class=\"reference-given-names\">AG</span>. <span class=\"citation-label\">61.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Systematic review of the health benefits of physical activity and fitness in school-aged children and youth. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Behav. Nutr. Phys. Act.</span></span> <span class=\"reference-volume\">7</span>:<span class=\"reference-fpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Systematic+review+of+the+health+benefits+of+physical+activity+and+fitness+in+school-aged+children+and+youth&amp;author=I+Janssen&amp;author=AG+LeBlanc&amp;journal=Int.+J.+Behav.+Nutr.+Phys.+Act.&amp;volume=7&amp;pages=40&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B62\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Fors</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Lindgren</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Wiström</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">62.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Perceived personal safety in relation to urban woodland vegetation—a review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">127–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perceived+personal+safety+in+relation+to+urban+woodland+vegetation%E2%80%94a+review&amp;author=M+Jansson&amp;author=H+Fors&amp;author=T+Lindgren&amp;author=B+Wistr%C3%B6m&amp;journal=Urban+For.+Urban+Green.&amp;volume=12&amp;pages=127-33&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B63\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Jim</span> <span class=\"reference-given-names\">CY</span>, <span class=\"reference-surname\">Chen</span> <span class=\"reference-given-names\">WY</span>. <span class=\"citation-label\">63.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China). </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Manag.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">665–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Assessing+the+ecosystem+service+of+air+pollutant+removal+by+urban+trees+in+Guangzhou+%28China%29&amp;author=CY+Jim&amp;author=WY+Chen&amp;journal=J.+Environ.+Manag.&amp;volume=88&amp;pages=665-76&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B64\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Johansson</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">64.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Psychological benefits of walking: moderation by company and outdoor environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Appl. Psychol. Health Well-Being</span></span> <span class=\"reference-volume\">3</span>:<span class=\"reference-fpage\">261–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Psychological+benefits+of+walking%3A+moderation+by+company+and+outdoor+environment&amp;author=M+Johansson&amp;author=T+Hartig&amp;author=H+Staats&amp;journal=Appl.+Psychol.+Health+Well-Being&amp;volume=3&amp;pages=261-80&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B65\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaczynski</span> <span class=\"reference-given-names\">AT</span>, <span class=\"reference-surname\">Henderson</span> <span class=\"reference-given-names\">KA</span>. <span class=\"citation-label\">65.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Environmental correlates of physical activity: a review of evidence about parks and recreation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">29</span>:<span class=\"reference-fpage\">315–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environmental+correlates+of+physical+activity%3A+a+review+of+evidence+about+parks+and+recreation&amp;author=AT+Kaczynski&amp;author=KA+Henderson&amp;journal=Leis.+Sci.&amp;volume=29&amp;pages=315-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B66\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">66.\\u2002</span> <span class=\"reference-year\">1993</span>. <span class=\"reference-article-title\"> The role of nature in the context of the workplace. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">193–</span><span class=\"reference-lpage\">201</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+role+of+nature+in+the+context+of+the+workplace&amp;author=R+Kaplan&amp;journal=Landsc.+Urban+Plann.&amp;volume=26&amp;pages=193-201&amp;publication_year=1993&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B67\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">67.\\u2002</span> <span class=\"reference-year\">1989</span>. <span class=\"reference-source\"><span class=\"reference-italic\">The Experience of Nature: A Psychological Perspective</span></span> New York: Cambridge Univ. Press\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+Experience+of+Nature%3A+A+Psychological+Perspective&amp;author=R+Kaplan&amp;author=S+Kaplan&amp;publication_year=1989&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B68\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">68.\\u2002</span> <span class=\"reference-year\">1995</span>. <span class=\"reference-article-title\"> The restorative benefits of nature: toward an integrative framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+restorative+benefits+of+nature%3A+toward+an+integrative+framework&amp;author=S+Kaplan&amp;journal=J.+Environ.+Psychol.&amp;volume=15&amp;pages=169-82&amp;publication_year=1995&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B69\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaplan</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">69.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Meditation, restoration, and the management of mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">480–</span><span class=\"reference-lpage\">506</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Meditation%2C+restoration%2C+and+the+management+of+mental+fatigue&amp;author=S+Kaplan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=480-506&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B70\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Karl</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Harley</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Emmons</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Thornton</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Guenther</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">70.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Efficient atmospheric cleansing of oxidized organic trace gases by vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Science</span></span> <span class=\"reference-volume\">330</span>:<span class=\"reference-fpage\">816–</span><span class=\"reference-lpage\">19</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficient+atmospheric+cleansing+of+oxidized+organic+trace+gases+by+vegetation&amp;author=T+Karl&amp;author=P+Harley&amp;author=L+Emmons&amp;author=B+Thornton&amp;author=A+Guenther&amp;journal=Science&amp;volume=330&amp;pages=816-19&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B71\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kaźmierczak</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">71.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> The contribution of local parks to neighbourhood social ties. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">109</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">44</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+contribution+of+local+parks+to+neighbourhood+social+ties&amp;author=A+Ka%C5%BAmierczak&amp;journal=Landsc.+Urban+Plann.&amp;volume=109&amp;pages=31-44&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B72\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Knopf</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">72.\\u2002</span> <span class=\"reference-year\">1987</span>. <span class=\"reference-article-title\"> Human behavior, cognition, and affect in the natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Handbook of Environmental Psychology</span></span> D Stokols, I Altman <span class=\"reference-fpage\">783–</span><span class=\"reference-lpage\">825</span> New York: Wiley\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Human+behavior%2C+cognition%2C+and+affect+in+the+natural+environment&amp;author=RC+Knopf&amp;journal=Handbook+of+Environmental+Psychology&amp;pages=783-825&amp;publication_year=1987&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B73\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Korpela</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">73.\\u2002</span> <span class=\"reference-year\">1996</span>. <span class=\"reference-article-title\"> Restorative qualities of favorite places. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">33</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Restorative+qualities+of+favorite+places&amp;author=K+Korpela&amp;author=T+Hartig&amp;journal=J.+Environ.+Psychol.&amp;volume=16&amp;pages=221-33&amp;publication_year=1996&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B74\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kroll</span> <span class=\"reference-given-names\">JH</span>, <span class=\"reference-surname\">Seinfeld</span> <span class=\"reference-given-names\">JH</span>. <span class=\"citation-label\">74.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Chemistry of secondary organic aerosol: formation and evolution of low-volatility organics in the atmosphere. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">42</span>:<span class=\"reference-fpage\">3593–</span><span class=\"reference-lpage\">624</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Chemistry+of+secondary+organic+aerosol%3A+formation+and+evolution+of+low-volatility+organics+in+the+atmosphere&amp;author=JH+Kroll&amp;author=JH+Seinfeld&amp;journal=Atmos.+Environ.&amp;volume=42&amp;pages=3593-624&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B75\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">75.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Aggression and violence in the inner city: effects of environment via mental fatigue. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">543–</span><span class=\"reference-lpage\">71</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aggression+and+violence+in+the+inner+city%3A+effects+of+environment+via+mental+fatigue&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=543-71&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B76\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">76.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Environment and crime in the inner city: Does vegetation reduce crime?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">33</span>:<span class=\"reference-fpage\">343–</span><span class=\"reference-lpage\">67</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environment+and+crime+in+the+inner+city%3A+Does+vegetation+reduce+crime%3F&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=Environ.+Behav.&amp;volume=33&amp;pages=343-67&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B77\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>, <span class=\"reference-surname\">Coley</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Brunson</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">77.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Fertile ground for community: inner-city neighborhood common spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Community Psychol.</span></span> <span class=\"reference-volume\">26</span>:<span class=\"reference-fpage\">823–</span><span class=\"reference-lpage\">51</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Fertile+ground+for+community%3A+inner-city+neighborhood+common+spaces&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;author=RL+Coley&amp;author=L+Brunson&amp;journal=Am.+J.+Community+Psychol.&amp;volume=26&amp;pages=823-51&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B78\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">78.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Greenspace and obesity: a systematic review of the evidence. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Obes. Rev.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">e183–</span><span class=\"reference-lpage\">89</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace+and+obesity%3A+a+systematic+review+of+the+evidence&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Obes.+Rev.&amp;volume=12&amp;pages=e183-89&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B79\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lachowycz</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Jones</span> <span class=\"reference-given-names\">AP</span>. <span class=\"citation-label\">79.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Towards a better understanding of the relationship between greenspace and health: development of a theoretical framework. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">118</span>:<span class=\"reference-fpage\">62–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Towards+a+better+understanding+of+the+relationship+between+greenspace+and+health%3A+development+of+a+theoretical+framework&amp;author=K+Lachowycz&amp;author=AP+Jones&amp;journal=Landsc.+Urban+Plann.&amp;volume=118&amp;pages=62-69&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B80\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lindheim</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Syme</span> <span class=\"reference-given-names\">SL</span>. <span class=\"citation-label\">80.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Environments, people, and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">335–</span><span class=\"reference-lpage\">59</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Environments%2C+people%2C+and+health&amp;author=R+Lindheim&amp;author=SL+Syme&amp;journal=Annu.+Rev.+Public+Health&amp;volume=4&amp;pages=335-59&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B81\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Liu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Mu</span> <span class=\"reference-given-names\">Y-J</span>, <span class=\"reference-surname\">Zhu</span> <span class=\"reference-given-names\">Y-G</span>, <span class=\"reference-surname\">Ding</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Arens</span> <span class=\"reference-given-names\">NC</span>. <span class=\"citation-label\">81.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Which ornamental plant species effectively remove benzene from indoor air?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">650–</span><span class=\"reference-lpage\">54</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Which+ornamental+plant+species+effectively+remove+benzene+from+indoor+air%3F&amp;author=Y-J+Liu&amp;author=Y-J+Mu&amp;author=Y-G+Zhu&amp;author=H+Ding&amp;author=NC+Arens&amp;journal=Atmos.+Environ.&amp;volume=41&amp;pages=650-54&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B82\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lloyd</span> <span class=\"reference-given-names\">GER</span>, <span class=\"reference-surname\">Chadwick</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mann</span> <span class=\"reference-given-names\">WN</span>. <span class=\"citation-label\">82.\\u2002</span> <span class=\"reference-year\">1978</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Hippocratic Writings</span></span> Harmondsworth: Penguin\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Hippocratic+Writings&amp;author=GER+Lloyd&amp;author=J+Chadwick&amp;author=WN+Mann&amp;publication_year=1978&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B83\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Lovasi</span> <span class=\"reference-given-names\">GS</span>, <span class=\"reference-surname\">O\\'Neil-Dunne</span> <span class=\"reference-given-names\">JP</span>, <span class=\"reference-surname\">Lu</span> <span class=\"reference-given-names\">JW</span>, <span class=\"reference-surname\">Sheehan</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Perzanowski</span> <span class=\"reference-given-names\">MS</span>. <span class=\"citation-label\">83.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Urban tree canopy and asthma, wheeze, rhinitis, and allergic sensitization to tree pollen in a New York City birth cohort. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Perspect.</span></span> <span class=\"reference-volume\">121</span>:<span class=\"reference-fpage\">494–</span><span class=\"reference-lpage\">500</span> 00e1–6 \\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+tree+canopy+and+asthma%2C+wheeze%2C+rhinitis%2C+and+allergic+sensitization+to+tree+pollen+in+a+New+York+City+birth+cohort&amp;author=GS+Lovasi&amp;author=JP+O%27Neil-Dunne&amp;author=JW+Lu&amp;author=D+Sheehan&amp;author=MS+Perzanowski&amp;journal=Environ.+Health+Perspect.&amp;volume=121&amp;pages=494-500&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B84\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">84.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Is green space in the living environment associated with people\\'s feelings of social safety?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Plann. A</span></span> <span class=\"reference-volume\">41</span>:<span class=\"reference-fpage\">1763–</span><span class=\"reference-lpage\">77</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+green+space+in+the+living+environment+associated+with+people%27s+feelings+of+social+safety%3F&amp;author=J+Maas&amp;author=P+Spreeuwenberg&amp;author=M+van+Winsum-Westra&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=PP+Groenewegen&amp;journal=Environ.+Plann.+A&amp;volume=41&amp;pages=1763-77&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B85\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SM</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">85.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Social contacts as a possible mechanism behind the relation between green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">586–</span><span class=\"reference-lpage\">95</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+contacts+as+a+possible+mechanism+behind+the+relation+between+green+space+and+health&amp;author=J+Maas&amp;author=SM+van+Dillen&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Health+Place&amp;volume=15&amp;pages=586-95&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B86\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Schellevis</span> <span class=\"reference-given-names\">FG</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">86.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Morbidity is related to a green living environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">63</span>:<span class=\"reference-fpage\">967–</span><span class=\"reference-lpage\">73</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Morbidity+is+related+to+a+green+living+environment&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;author=FG+Schellevis&amp;author=PP+Groenewegen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=63&amp;pages=967-73&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B87\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">87.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Green space, urbanity, and health: How strong is the relation?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">60</span>:<span class=\"reference-fpage\">587–</span><span class=\"reference-lpage\">92</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space%2C+urbanity%2C+and+health%3A+How+strong+is+the+relation%3F&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;author=S+de+Vries&amp;author=P+Spreeuwenberg&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=60&amp;pages=587-92&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B88\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Spreeuwenberg</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">88.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Physical activity as a possible mechanism behind the relationship between green space and health: a multilevel analysis. </span> <span class=\"reference-source\"><span class=\"reference-italic\">BMC Public Health</span></span> <span class=\"reference-volume\">8</span>:<span class=\"reference-fpage\">206</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+as+a+possible+mechanism+behind+the+relationship+between+green+space+and+health%3A+a+multilevel+analysis&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=P+Spreeuwenberg&amp;author=PP+Groenewegen&amp;journal=BMC+Public+Health&amp;volume=8&amp;pages=206&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B89\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Maller</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Townsend</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">St Leger</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Henderson-Wilson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Pryor</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">89.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Healthy Parks, Healthy People: The Health Benefits of Contact with Nature in a Park Context</span></span> Melbourne, Aust.: Deakin Univ.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Healthy+Parks%2C+Healthy+People%3A+The+Health+Benefits+of+Contact+with+Nature+in+a+Park+Context&amp;author=C+Maller&amp;author=M+Townsend&amp;author=L+St+Leger&amp;author=C+Henderson-Wilson&amp;author=A+Pryor&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B90\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCormack</span> <span class=\"reference-given-names\">GR</span>, <span class=\"reference-surname\">Rock</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Toohey</span> <span class=\"reference-given-names\">AM</span>, <span class=\"reference-surname\">Hignell</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">90.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Characteristics of urban parks associated with park use and physical activity: a review of qualitative research. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">712–</span><span class=\"reference-lpage\">26</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Characteristics+of+urban+parks+associated+with+park+use+and+physical+activity%3A+a+review+of+qualitative+research&amp;author=GR+McCormack&amp;author=M+Rock&amp;author=AM+Toohey&amp;author=D+Hignell&amp;journal=Health+Place&amp;volume=16&amp;pages=712-26&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B91\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">McCurdy</span> <span class=\"reference-given-names\">LE</span>, <span class=\"reference-surname\">Winterbottom</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Mehta</span> <span class=\"reference-given-names\">SS</span>, <span class=\"reference-surname\">Roberts</span> <span class=\"reference-given-names\">JR</span>. <span class=\"citation-label\">91.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Using nature and outdoor activity to improve children\\'s health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Curr. Probl. Pediatr. Adolesc. Health Care</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">102–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Using+nature+and+outdoor+activity+to+improve+children%27s+health&amp;author=LE+McCurdy&amp;author=KE+Winterbottom&amp;author=SS+Mehta&amp;author=JR+Roberts&amp;journal=Curr.+Probl.+Pediatr.+Adolesc.+Health+Care&amp;volume=40&amp;pages=102-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B92\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">92.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Is physical activity in natural environments better for mental health than physical activity in other environments?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">130–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Is+physical+activity+in+natural+environments+better+for+mental+health+than+physical+activity+in+other+environments%3F&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=91&amp;pages=130-34&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B93\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">93.\\u2002</span> <span class=\"reference-year\">2007</span>. <span class=\"reference-article-title\"> Greenspace, urbanity and health: relationships in England. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">61</span>:<span class=\"reference-fpage\">681–</span><span class=\"reference-lpage\">83</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Greenspace%2C+urbanity+and+health%3A+relationships+in+England&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=61&amp;pages=681-83&amp;publication_year=2007&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B94\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Popham</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">94.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Effect of exposure to natural environment on health inequalities: an observational population study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Lancet</span></span> <span class=\"reference-volume\">372</span>:<span class=\"reference-fpage\">1655–</span><span class=\"reference-lpage\">60</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Effect+of+exposure+to+natural+environment+on+health+inequalities%3A+an+observational+population+study&amp;author=R+Mitchell&amp;author=F+Popham&amp;journal=Lancet&amp;volume=372&amp;pages=1655-60&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B95\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Mitrione</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">95.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Therapeutic responses to natural environments: using gardens to improve health care. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Minn. Med.</span></span> <span class=\"reference-volume\">91</span>:<span class=\"reference-fpage\">31–</span><span class=\"reference-lpage\">34</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Therapeutic+responses+to+natural+environments%3A+using+gardens+to+improve+health+care&amp;author=S+Mitrione&amp;journal=Minn.+Med.&amp;volume=91&amp;pages=31-34&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B96\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Muñoz</span> <span class=\"reference-given-names\">S-A</span>. <span class=\"citation-label\">96.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Children in the Outdoors: A Literature Review</span></span> Forres, Scotl.: Sustain. Dev. Res. Cent.\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+in+the+Outdoors%3A+A+Literature+Review&amp;author=S-A+Mu%C3%B1oz&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B97\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nieminen</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Martelin</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Koskinen</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Aro</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Alanen</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hyyppä</span> <span class=\"reference-given-names\">MT</span>. <span class=\"citation-label\">97.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Social capital as a determinant of self-rated health and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Public Health</span></span> <span class=\"reference-volume\">55</span>:<span class=\"reference-fpage\">531–</span><span class=\"reference-lpage\">42</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Social+capital+as+a+determinant+of+self-rated+health+and+psychological+well-being&amp;author=T+Nieminen&amp;author=T+Martelin&amp;author=S+Koskinen&amp;author=H+Aro&amp;author=E+Alanen&amp;author=MT+Hyypp%C3%A4&amp;journal=Int.+J.+Public+Health&amp;volume=55&amp;pages=531-42&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B98\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Sangster</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Gallis</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">98.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Forests, Trees and Human Health</span></span> Dordrecht: Springer\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Forests%2C+Trees+and+Human+Health&amp;author=K+Nilsson&amp;author=M+Sangster&amp;author=C+Gallis&amp;author=T+Hartig&amp;author=S+de+Vries&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B99\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nilsson</span> <span class=\"reference-given-names\">ME</span>, <span class=\"reference-surname\">Berglund</span> <span class=\"reference-given-names\">B</span>. <span class=\"citation-label\">99.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Soundscape quality in suburban green areas and city parks. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Acta Acustica United Acustica</span></span> <span class=\"reference-volume\">92</span>:<span class=\"reference-fpage\">903–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Soundscape+quality+in+suburban+green+areas+and+city+parks&amp;author=ME+Nilsson&amp;author=B+Berglund&amp;journal=Acta+Acustica+United+Acustica&amp;volume=92&amp;pages=903-11&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B100\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Nowak</span> <span class=\"reference-given-names\">DJ</span>, <span class=\"reference-surname\">Crane</span> <span class=\"reference-given-names\">DE</span>, <span class=\"reference-surname\">Stevens</span> <span class=\"reference-given-names\">JC</span>. <span class=\"citation-label\">100.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Air pollution removal by urban trees and shrubs in the United States. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Urban For. Urban Green.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">115–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+pollution+removal+by+urban+trees+and+shrubs+in+the+United+States&amp;author=DJ+Nowak&amp;author=DE+Crane&amp;author=JC+Stevens&amp;journal=Urban+For.+Urban+Green.&amp;volume=4&amp;pages=115-23&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B101\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Olmsted</span> <span class=\"reference-given-names\">FL</span>. <span class=\"citation-label\">101.\\u2002</span> <span class=\"reference-year\">1970 (1870)</span>. <span class=\"reference-source\"><span class=\"reference-italic\">Public Parks and the Enlargement of Towns</span></span> New York: Arno (Cambridge, MA: Riverside)\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Public+Parks+and+the+Enlargement+of+Towns&amp;author=FL+Olmsted&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B102\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Orwell</span> <span class=\"reference-given-names\">RL</span>, <span class=\"reference-surname\">Wood</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Burchett</span> <span class=\"reference-given-names\">MD</span>, <span class=\"reference-surname\">Tarran</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Torpy</span> <span class=\"reference-given-names\">F</span>. <span class=\"citation-label\">102.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> The potted-plant microcosm substantially reduces indoor air VOC pollution: II. Laboratory study. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Water Air Soil Poll.</span></span> <span class=\"reference-volume\">177</span>:<span class=\"reference-fpage\">59–</span><span class=\"reference-lpage\">80</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+potted-plant+microcosm+substantially+reduces+indoor+air+VOC+pollution%3A+II.+Laboratory+study&amp;author=RL+Orwell&amp;author=RA+Wood&amp;author=MD+Burchett&amp;author=J+Tarran&amp;author=F+Torpy&amp;journal=Water+Air+Soil+Poll.&amp;volume=177&amp;pages=59-80&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B103\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Paoletti</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Bardelli</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Giovannini</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Pecchioli</span> <span class=\"reference-given-names\">L</span>. <span class=\"citation-label\">103.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Air quality impact of an urban park over time. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Procedia Environ. Sci.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">10–</span><span class=\"reference-lpage\">16</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Air+quality+impact+of+an+urban+park+over+time&amp;author=E+Paoletti&amp;author=T+Bardelli&amp;author=G+Giovannini&amp;author=L+Pecchioli&amp;journal=Procedia+Environ.+Sci.&amp;volume=4&amp;pages=10-16&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B104\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Powell</span> <span class=\"reference-given-names\">KE</span>, <span class=\"reference-surname\">Paluch</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Blair</span> <span class=\"reference-given-names\">SN</span>. <span class=\"citation-label\">104.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Physical activity for health: What Kind? How much? How Intense? On Top of What?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Annu. Rev. Public Health</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">349–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Physical+activity+for+health%3A+What+Kind%3F+How+much%3F+How+Intense%3F+On+Top+of+What%3F&amp;author=KE+Powell&amp;author=AE+Paluch&amp;author=SN+Blair&amp;journal=Annu.+Rev.+Public+Health&amp;volume=32&amp;pages=349-65&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B105\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Pretty</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Peacock</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Sellens</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Griffin</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">105.\\u2002</span> <span class=\"reference-year\">2005</span>. <span class=\"reference-article-title\"> The mental and physical health outcomes of green exercise. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Environ. Health Res.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">319–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+mental+and+physical+health+outcomes+of+green+exercise&amp;author=J+Pretty&amp;author=J+Peacock&amp;author=M+Sellens&amp;author=M+Griffin&amp;journal=Int.+J.+Environ.+Health+Res.&amp;volume=15&amp;pages=319-37&amp;publication_year=2005&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B106\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Proctor</span> <span class=\"reference-given-names\">JD</span>. <span class=\"citation-label\">106.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> The social construction of nature: relativist accusations, pragmatist and critical realist responses. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Assoc. Am. Geogr.</span></span> <span class=\"reference-volume\">88</span>:<span class=\"reference-fpage\">352–</span><span class=\"reference-lpage\">76</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+social+construction+of+nature%3A+relativist+accusations%2C+pragmatist+and+critical+realist+responses&amp;author=JD+Proctor&amp;journal=Ann.+Assoc.+Am.+Geogr.&amp;volume=88&amp;pages=352-76&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B107\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">107.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Gender differences in relationships between urban green space and health in the United Kingdom. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">71</span>:<span class=\"reference-fpage\">568–</span><span class=\"reference-lpage\">75</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gender+differences+in+relationships+between+urban+green+space+and+health+in+the+United+Kingdom&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;journal=Soc.+Sci.+Med.&amp;volume=71&amp;pages=568-75&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B108\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Astell-Burt</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Frumkin</span> <span class=\"reference-given-names\">H</span>. <span class=\"citation-label\">108.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Green cities and health: a question of scale?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">66</span>:<span class=\"reference-fpage\">160–</span><span class=\"reference-lpage\">65</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+cities+and+health%3A+a+question+of+scale%3F&amp;author=EA+Richardson&amp;author=R+Mitchell&amp;author=T+Hartig&amp;author=S+de+Vries&amp;author=T+Astell-Burt&amp;author=H+Frumkin&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=66&amp;pages=160-65&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B109\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Richardson</span> <span class=\"reference-given-names\">EA</span>, <span class=\"reference-surname\">Pearce</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Kingham</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">109.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Role of physical activity in the relationship between urban green space and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Public Health</span></span> <span class=\"reference-volume\">127</span>:<span class=\"reference-fpage\">318–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Role+of+physical+activity+in+the+relationship+between+urban+green+space+and+health&amp;author=EA+Richardson&amp;author=J+Pearce&amp;author=R+Mitchell&amp;author=S+Kingham&amp;journal=Public+Health&amp;volume=127&amp;pages=318-24&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B110\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rios</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Aiken</span> <span class=\"reference-given-names\">LS</span>, <span class=\"reference-surname\">Zautra</span> <span class=\"reference-given-names\">AJ</span>. <span class=\"citation-label\">110.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Neighborhood contexts and the mediating role of neighborhood social cohesion on health and psychological distress among Hispanic and non-Hispanic residents. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Ann. Behav. Med.</span></span> <span class=\"reference-volume\">43</span>:<span class=\"reference-fpage\">50–</span><span class=\"reference-lpage\">61</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Neighborhood+contexts+and+the+mediating+role+of+neighborhood+social+cohesion+on+health+and+psychological+distress+among+Hispanic+and+non-Hispanic+residents&amp;author=R+Rios&amp;author=LS+Aiken&amp;author=AJ+Zautra&amp;journal=Ann.+Behav.+Med.&amp;volume=43&amp;pages=50-61&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B111\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Rose</span> <span class=\"reference-given-names\">G</span>. <span class=\"citation-label\">111.\\u2002</span> <span class=\"reference-year\">2001</span>. <span class=\"reference-article-title\"> Sick individuals and sick populations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Int. J. Epidemiol.</span></span> <span class=\"reference-volume\">30</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">32</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Sick+individuals+and+sick+populations&amp;author=G+Rose&amp;journal=Int.+J.+Epidemiol.&amp;volume=30&amp;pages=427-32&amp;publication_year=2001&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B112\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sartelet</span> <span class=\"reference-given-names\">KN</span>, <span class=\"reference-surname\">Couvidat</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Seigneur</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roustan</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">112.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Impact of biogenic emissions on air quality over Europe and North America. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">53</span>:<span class=\"reference-fpage\">131–</span><span class=\"reference-lpage\">41</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Impact+of+biogenic+emissions+on+air+quality+over+Europe+and+North+America&amp;author=KN+Sartelet&amp;author=F+Couvidat&amp;author=C+Seigneur&amp;author=Y+Roustan&amp;journal=Atmos.+Environ.&amp;volume=53&amp;pages=131-41&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B113\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Setälä</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Viippola</span> <span class=\"reference-given-names\">V</span>, <span class=\"reference-surname\">Rantalainen</span> <span class=\"reference-given-names\">AL</span>, <span class=\"reference-surname\">Pennanen</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Yli-Pelkonen</span> <span class=\"reference-given-names\">V</span>. <span class=\"citation-label\">113.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> Does urban vegetation mitigate air pollution in northern conditions?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Pollut.</span></span> <span class=\"reference-volume\">183</span>:<span class=\"reference-fpage\">104–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+urban+vegetation+mitigate+air+pollution+in+northern+conditions%3F&amp;author=H+Set%C3%A4l%C3%A4&amp;author=V+Viippola&amp;author=AL+Rantalainen&amp;author=A+Pennanen&amp;author=V+Yli-Pelkonen&amp;journal=Environ.+Pollut.&amp;volume=183&amp;pages=104-12&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B114\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Simpson</span> <span class=\"reference-given-names\">JR</span>, <span class=\"reference-surname\">McPherson</span> <span class=\"reference-given-names\">EG</span>. <span class=\"citation-label\">114.\\u2002</span> <span class=\"reference-year\">1998</span>. <span class=\"reference-article-title\"> Simulation of tree shade impacts on residential energy use for space conditioning in Sacramento. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Atmos. Environ.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">69–</span><span class=\"reference-lpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Simulation+of+tree+shade+impacts+on+residential+energy+use+for+space+conditioning+in+Sacramento&amp;author=JR+Simpson&amp;author=EG+McPherson&amp;journal=Atmos.+Environ.&amp;volume=32&amp;pages=69-74&amp;publication_year=1998&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B115\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Smardon</span> <span class=\"reference-given-names\">RC</span>. <span class=\"citation-label\">115.\\u2002</span> <span class=\"reference-year\">1988</span>. <span class=\"reference-article-title\"> Perception and aesthetics of the urban environment: review of the role of vegetation. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">106</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Perception+and+aesthetics+of+the+urban+environment%3A+review+of+the+role+of+vegetation&amp;author=RC+Smardon&amp;journal=Landsc.+Urban+Plann.&amp;volume=15&amp;pages=85-106&amp;publication_year=1988&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B116\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Staats</span> <span class=\"reference-given-names\">H</span>, <span class=\"reference-surname\">Van Gemerden</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>. <span class=\"citation-label\">116.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Preference for restorative situations: interactive effects of attentional state, activity-in-environment, and social context. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Leis. Sci.</span></span> <span class=\"reference-volume\">32</span>:<span class=\"reference-fpage\">401–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preference+for+restorative+situations%3A+interactive+effects+of+attentional+state%2C+activity-in-environment%2C+and+social+context&amp;author=H+Staats&amp;author=E+Van+Gemerden&amp;author=T+Hartig&amp;journal=Leis.+Sci.&amp;volume=32&amp;pages=401-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B117\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Stigsdotter</span> <span class=\"reference-given-names\">UK</span>, <span class=\"reference-surname\">Ekholm</span> <span class=\"reference-given-names\">O</span>, <span class=\"reference-surname\">Schipperijn</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Toftager</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Kamper-Jørgensen</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Randrup</span> <span class=\"reference-given-names\">TB</span>. <span class=\"citation-label\">117.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Health promoting outdoor environments: associations between green space, and health, health-related quality of life and stress based on a Danish national representative survey. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Scand. J. Public Health</span></span> <span class=\"reference-volume\">38</span>:<span class=\"reference-fpage\">411–</span><span class=\"reference-lpage\">17</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Health+promoting+outdoor+environments%3A+associations+between+green+space%2C+and+health%2C+health-related+quality+of+life+and+stress+based+on+a+Danish+national+representative+survey&amp;author=UK+Stigsdotter&amp;author=O+Ekholm&amp;author=J+Schipperijn&amp;author=M+Toftager&amp;author=F+Kamper-J%C3%B8rgensen&amp;author=TB+Randrup&amp;journal=Scand.+J.+Public+Health&amp;volume=38&amp;pages=411-17&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B118\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Sugiyama</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Leslie</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Giles-Corti</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Owen</span> <span class=\"reference-given-names\">N</span>. <span class=\"citation-label\">118.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> Associations of neighbourhood greenness with physical and mental health: Do walking, social coherence and local social interaction explain the relationships?. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">62</span>:<span class=\"reference-fpage\">e9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Associations+of+neighbourhood+greenness+with+physical+and+mental+health%3A+Do+walking%2C+social+coherence+and+local+social+interaction+explain+the+relationships%3F&amp;author=T+Sugiyama&amp;author=E+Leslie&amp;author=B+Giles-Corti&amp;author=N+Owen&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=62&amp;pages=e9&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B119\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Takano</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Nakamura</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Watanabe</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">119.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Urban residential environments and senior citizens\\' longevity in megacity areas: the importance of walkable green spaces. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Epidemiol. Community Health</span></span> <span class=\"reference-volume\">56</span>:<span class=\"reference-fpage\">913–</span><span class=\"reference-lpage\">18</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Urban+residential+environments+and+senior+citizens%27+longevity+in+megacity+areas%3A+the+importance+of+walkable+green+spaces&amp;author=T+Takano&amp;author=K+Nakamura&amp;author=M+Watanabe&amp;journal=J.+Epidemiol.+Community+Health&amp;volume=56&amp;pages=913-18&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B120\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tallis</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">G</span>, <span class=\"reference-surname\">Sinnett</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Freer-Smith</span> <span class=\"reference-given-names\">P</span>. <span class=\"citation-label\">120.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Estimating the removal of atmospheric particulate pollution by the urban tree canopy of London, under current and future environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">129–</span><span class=\"reference-lpage\">38</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Estimating+the+removal+of+atmospheric+particulate+pollution+by+the+urban+tree+canopy+of+London%2C+under+current+and+future+environments&amp;author=M+Tallis&amp;author=G+Taylor&amp;author=D+Sinnett&amp;author=P+Freer-Smith&amp;journal=Landsc.+Urban+Plann.&amp;volume=103&amp;pages=129-38&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B121\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>. <span class=\"citation-label\">121.\\u2002</span> <span class=\"reference-year\">2009</span>. <span class=\"reference-article-title\"> Children with attention deficits concentrate better after walk in the park. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Atten. Disord.</span></span> <span class=\"reference-volume\">12</span>:<span class=\"reference-fpage\">402–</span><span class=\"reference-lpage\">9</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Children+with+attention+deficits+concentrate+better+after+walk+in+the+park&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;journal=J.+Atten.+Disord.&amp;volume=12&amp;pages=402-9&amp;publication_year=2009&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B122\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Taylor</span> <span class=\"reference-given-names\">AF</span>, <span class=\"reference-surname\">Kuo</span> <span class=\"reference-given-names\">FE</span>, <span class=\"reference-surname\">Sullivan</span> <span class=\"reference-given-names\">WC</span>. <span class=\"citation-label\">122.\\u2002</span> <span class=\"reference-year\">2002</span>. <span class=\"reference-article-title\"> Views of nature and self-discipline: evidence from inner city children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">49–</span><span class=\"reference-lpage\">63</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Views+of+nature+and+self-discipline%3A+evidence+from+inner+city+children&amp;author=AF+Taylor&amp;author=FE+Kuo&amp;author=WC+Sullivan&amp;journal=J.+Environ.+Psychol.&amp;volume=22&amp;pages=49-63&amp;publication_year=2002&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B123\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Thompson Coon</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Boddy</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Stein</span> <span class=\"reference-given-names\">K</span>, <span class=\"reference-surname\">Whear</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Barton</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Depledge</span> <span class=\"reference-given-names\">MH</span>. <span class=\"citation-label\">123.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Does participating in physical activity in outdoor natural environments have a greater effect on physical and mental wellbeing than physical activity indoors? A systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Sci. Technol.</span></span> <span class=\"reference-volume\">45</span>:<span class=\"reference-fpage\">1761–</span><span class=\"reference-lpage\">72</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Does+participating+in+physical+activity+in+outdoor+natural+environments+have+a+greater+effect+on+physical+and+mental+wellbeing+than+physical+activity+indoors%3F+A+systematic+review&amp;author=J+Thompson+Coon&amp;author=K+Boddy&amp;author=K+Stein&amp;author=R+Whear&amp;author=J+Barton&amp;author=MH+Depledge&amp;journal=Environ.+Sci.+Technol.&amp;volume=45&amp;pages=1761-72&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B124\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Tsunetsugu</span> <span class=\"reference-given-names\">Y</span>, <span class=\"reference-surname\">Park</span> <span class=\"reference-given-names\">B</span>, <span class=\"reference-surname\">Miyazaki</span> <span class=\"reference-given-names\">Y</span>. <span class=\"citation-label\">124.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Trends in research related to “Shinrin-yoku” (taking in the forest atmosphere or forest bathing) in Japan. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health Prevent. Med.</span></span> <span class=\"reference-volume\">15</span>:<span class=\"reference-fpage\">27–</span><span class=\"reference-lpage\">37</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Trends+in+research+related+to+%E2%80%9CShinrin-yoku%E2%80%9D+%28taking+in+the+forest+atmosphere+or+forest+bathing%29+in+Japan&amp;author=Y+Tsunetsugu&amp;author=B+Park&amp;author=Y+Miyazaki&amp;journal=Environ.+Health+Prevent.+Med.&amp;volume=15&amp;pages=27-37&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B125\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">125.\\u2002</span> <span class=\"reference-year\">1979</span>. <span class=\"reference-article-title\"> Visual landscapes and psychological well-being. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Res.</span></span> <span class=\"reference-volume\">4</span>:<span class=\"reference-fpage\">17–</span><span class=\"reference-lpage\">23</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Visual+landscapes+and+psychological+well-being&amp;author=RS+Ulrich&amp;journal=Landsc.+Res.&amp;volume=4&amp;pages=17-23&amp;publication_year=1979&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B126\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>. <span class=\"citation-label\">126.\\u2002</span> <span class=\"reference-year\">1983</span>. <span class=\"reference-article-title\"> Aesthetic and affective response to natural environment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Human Behaviour and Environment: Advances in Theory and Research.</span></span> Volume\\n<span class=\"reference-volume\">6</span> <span class=\"reference-source\"><span class=\"reference-italic\">Behaviour and the Natural Environment</span></span>, ed. I\\nAltman, JF Wohlwill <span class=\"reference-fpage\">85–</span><span class=\"reference-lpage\">125</span> New York: Plenum\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Aesthetic+and+affective+response+to+natural+environment&amp;author=RS+Ulrich&amp;journal=Human+Behaviour+and+Environment%3A+Advances+in+Theory+and+Research.Behaviour+and+the+Natural+Environment&amp;pages=85-125&amp;publication_year=1983&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B127\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ulrich</span> <span class=\"reference-given-names\">RS</span>, <span class=\"reference-surname\">Simons</span> <span class=\"reference-given-names\">RF</span>, <span class=\"reference-surname\">Losito</span> <span class=\"reference-given-names\">BD</span>, <span class=\"reference-surname\">Fiorito</span> <span class=\"reference-given-names\">E</span>, <span class=\"reference-surname\">Miles</span> <span class=\"reference-given-names\">MA</span>, <span class=\"reference-surname\">Zelson</span> <span class=\"reference-given-names\">M</span>. <span class=\"citation-label\">127.\\u2002</span> <span class=\"reference-year\">1991</span>. <span class=\"reference-article-title\"> Stress recovery during exposure to natural and urban environments. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Environ. Psychol.</span></span> <span class=\"reference-volume\">11</span>:<span class=\"reference-fpage\">201–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Stress+recovery+during+exposure+to+natural+and+urban+environments&amp;author=RS+Ulrich&amp;author=RF+Simons&amp;author=BD+Losito&amp;author=E+Fiorito&amp;author=MA+Miles&amp;author=M+Zelson&amp;journal=J.+Environ.+Psychol.&amp;volume=11&amp;pages=201-30&amp;publication_year=1991&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B128\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Cauwenberg</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">De Bourdeaudhuij</span> <span class=\"reference-given-names\">I</span>, <span class=\"reference-surname\">De Meester</span> <span class=\"reference-given-names\">F</span>, <span class=\"reference-surname\">Van Dyck</span> <span class=\"reference-given-names\">D</span>, <span class=\"reference-surname\">Salmon</span> <span class=\"reference-given-names\">J</span>. <span class=\"citation-label\">128.\\u2002</span><span class=\"reference-etal\"> et al.</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Relationship between the physical environment and physical activity in older adults: a systematic review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Health Place</span></span> <span class=\"reference-volume\">17</span>:<span class=\"reference-fpage\">458–</span><span class=\"reference-lpage\">69</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Relationship+between+the+physical+environment+and+physical+activity+in+older+adults%3A+a+systematic+review&amp;author=J+Van+Cauwenberg&amp;author=I+De+Bourdeaudhuij&amp;author=F+De+Meester&amp;author=D+Van+Dyck&amp;author=J+Salmon&amp;journal=Health+Place&amp;volume=17&amp;pages=458-69&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B129\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Custers</span> <span class=\"reference-given-names\">MHG</span>. <span class=\"citation-label\">129.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Gardening promotes neuroendocrine and affective restoration from stress. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Health Psychol.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">3–</span><span class=\"reference-lpage\">11</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Gardening+promotes+neuroendocrine+and+affective+restoration+from+stress&amp;author=AE+Van+den+Berg&amp;author=MHG+Custers&amp;journal=J.+Health+Psychol.&amp;volume=16&amp;pages=3-11&amp;publication_year=2011&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B130\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">Maas</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Verheij</span> <span class=\"reference-given-names\">RA</span>, <span class=\"reference-surname\">Groenewegen</span> <span class=\"reference-given-names\">PP</span>. <span class=\"citation-label\">130.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Green space as a buffer between stressful life events and health. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Soc. Sci. Med.</span></span> <span class=\"reference-volume\">70</span>:<span class=\"reference-fpage\">1203–</span><span class=\"reference-lpage\">10</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Green+space+as+a+buffer+between+stressful+life+events+and+health&amp;author=AE+Van+den+Berg&amp;author=J+Maas&amp;author=RA+Verheij&amp;author=PP+Groenewegen&amp;journal=Soc.+Sci.+Med.&amp;volume=70&amp;pages=1203-10&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B131\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van den Berg</span> <span class=\"reference-given-names\">AE</span>, <span class=\"reference-surname\">van Winsum-Westra</span> <span class=\"reference-given-names\">M</span>, <span class=\"reference-surname\">de Vries</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">van Dillen</span> <span class=\"reference-given-names\">SME</span>. <span class=\"citation-label\">131.\\u2002</span> <span class=\"reference-year\">2010</span>. <span class=\"reference-article-title\"> Allotment gardening and health: a comparative survey among allotment gardeners and their neighbors without an allotment. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Health</span></span> <span class=\"reference-volume\">9</span>:<span class=\"reference-fpage\">74</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Allotment+gardening+and+health%3A+a+comparative+survey+among+allotment+gardeners+and+their+neighbors+without+an+allotment&amp;author=AE+Van+den+Berg&amp;author=M+van+Winsum-Westra&amp;author=S+de+Vries&amp;author=SME+van+Dillen&amp;journal=Environ.+Health&amp;volume=9&amp;pages=74&amp;publication_year=2010&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B132\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Van Herzele</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Bell</span> <span class=\"reference-given-names\">S</span>, <span class=\"reference-surname\">Hartig</span> <span class=\"reference-given-names\">T</span>, <span class=\"reference-surname\">Podesta</span> <span class=\"reference-given-names\">MTC</span>, <span class=\"reference-surname\">van Zon</span> <span class=\"reference-given-names\">R</span>. <span class=\"citation-label\">132.\\u2002</span> <span class=\"reference-year\">2011</span>. <span class=\"reference-article-title\"> Health benefits of nature experience: the challenge of linking practice and research. </span> See Ref. 98 <span class=\"reference-fpage\">169–</span><span class=\"reference-lpage\">82</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B133\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Montarzino</span> <span class=\"reference-given-names\">A</span>. <span class=\"citation-label\">133.\\u2002</span> <span class=\"reference-year\">2008</span>. <span class=\"reference-article-title\"> The childhood factor: adult visits to green places and the significance of childhood experience. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">40</span>:<span class=\"reference-fpage\">111–</span><span class=\"reference-lpage\">43</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+childhood+factor%3A+adult+visits+to+green+places+and+the+significance+of+childhood+experience&amp;author=C+Ward+Thompson&amp;author=P+Aspinall&amp;author=A+Montarzino&amp;journal=Environ.+Behav.&amp;volume=40&amp;pages=111-43&amp;publication_year=2008&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B134\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Ward Thompson</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Roe</span> <span class=\"reference-given-names\">J</span>, <span class=\"reference-surname\">Aspinall</span> <span class=\"reference-given-names\">P</span>, <span class=\"reference-surname\">Mitchell</span> <span class=\"reference-given-names\">R</span>, <span class=\"reference-surname\">Clow</span> <span class=\"reference-given-names\">A</span>, <span class=\"reference-surname\">Miller</span> <span class=\"reference-given-names\">D</span>. <span class=\"citation-label\">134.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> More green space is linked to less stress in deprived communities: evidence from salivary cortisol patterns. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Landsc. Urban Plann.</span></span> <span class=\"reference-volume\">105</span>:<span class=\"reference-fpage\">221–</span><span class=\"reference-lpage\">29</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=More+green+space+is+linked+to+less+stress+in+deprived+communities%3A+evidence+from+salivary+cortisol+patterns&amp;author=C+Ward+Thompson&amp;author=J+Roe&amp;author=P+Aspinall&amp;author=R+Mitchell&amp;author=A+Clow&amp;author=D+Miller&amp;journal=Landsc.+Urban+Plann.&amp;volume=105&amp;pages=221-29&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B135\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Evans</span> <span class=\"reference-given-names\">GW</span>. <span class=\"citation-label\">135.\\u2002</span> <span class=\"reference-year\">2003</span>. <span class=\"reference-article-title\"> Nearby nature—a buffer of life stress among rural children. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Environ. Behav.</span></span> <span class=\"reference-volume\">35</span>:<span class=\"reference-fpage\">311–</span><span class=\"reference-lpage\">30</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nearby+nature%E2%80%94a+buffer+of+life+stress+among+rural+children&amp;author=NM+Wells&amp;author=GW+Evans&amp;journal=Environ.+Behav.&amp;volume=35&amp;pages=311-30&amp;publication_year=2003&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B136\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wells</span> <span class=\"reference-given-names\">NM</span>, <span class=\"reference-surname\">Lekies</span> <span class=\"reference-given-names\">KS</span>. <span class=\"citation-label\">136.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Nature and the life course: pathways from childhood nature experiences to adult environmentalism. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Child. Youth Environ.</span></span> <span class=\"reference-volume\">16</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">24</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Nature+and+the+life+course%3A+pathways+from+childhood+nature+experiences+to+adult+environmentalism&amp;author=NM+Wells&amp;author=KS+Lekies&amp;journal=Child.+Youth+Environ.&amp;volume=16&amp;pages=1-24&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B137\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Whitelaw</span> <span class=\"reference-given-names\">S</span>. <span class=\"citation-label\">137.\\u2002</span> <span class=\"reference-year\">2012</span>. <span class=\"reference-article-title\"> The emergence of a ‘dose-response’ analogy in the health improvement domain of public health: a critical review. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Crit. Public Health</span></span> <span class=\"reference-volume\">22</span>:<span class=\"reference-fpage\">427–</span><span class=\"reference-lpage\">40</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=The+emergence+of+a+%E2%80%98dose-response%E2%80%99+analogy+in+the+health+improvement+domain+of+public+health%3A+a+critical+review&amp;author=S+Whitelaw&amp;journal=Crit.+Public+Health&amp;volume=22&amp;pages=427-40&amp;publication_year=2012&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B138\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"><span class=\"citation-label\">138.\\u2002</span><span class=\"reference-collab\">WHO (World Health Organ.)</span> <span class=\"reference-year\">1946</span>. <span class=\"reference-article-title\"> <span class=\"reference-italic\">Preamble to the Constitution of the World Health Organization</span> as adopted by the International Health Conference. </span> New York, June 19–July 22, 1946; signed on July 22, 1946, by the representatives of 61 States (Off. Rec. World Health Organ., no. 2, p. 100) Geneva: WHO\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Preamble+to+the+Constitution+of+the+World+Health+Organization+as+adopted+by+the+International+Health+Conference&amp;publication_year=1946&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B139\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Wilson</span> <span class=\"reference-given-names\">SJ</span>, <span class=\"reference-surname\">Lipsey</span> <span class=\"reference-given-names\">MW</span>. <span class=\"citation-label\">139.\\u2002</span> <span class=\"reference-year\">2000</span>. <span class=\"reference-article-title\"> Wilderness challenge programs for delinquent youth: a meta-analysis of outcome evaluations. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Eval. Program Plann.</span></span> <span class=\"reference-volume\">23</span>:<span class=\"reference-fpage\">1–</span><span class=\"reference-lpage\">12</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Wilderness+challenge+programs+for+delinquent+youth%3A+a+meta-analysis+of+outcome+evaluations&amp;author=SJ+Wilson&amp;author=MW+Lipsey&amp;journal=Eval.+Program+Plann.&amp;volume=23&amp;pages=1-12&amp;publication_year=2000&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B140\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Yoo</span> <span class=\"reference-given-names\">MH</span>, <span class=\"reference-surname\">Kwon</span> <span class=\"reference-given-names\">YJ</span>, <span class=\"reference-surname\">Son</span> <span class=\"reference-given-names\">KC</span>, <span class=\"reference-surname\">Kays</span> <span class=\"reference-given-names\">SJ</span>. <span class=\"citation-label\">140.\\u2002</span> <span class=\"reference-year\">2006</span>. <span class=\"reference-article-title\"> Efficacy of indoor plants for the removal of single and mixed volatile organic pollutants and physiological effects of the volatiles on the plants. </span> <span class=\"reference-source\"><span class=\"reference-italic\">J. Am. Soc. Hort. Sci.</span></span> <span class=\"reference-volume\">131</span>:<span class=\"reference-fpage\">452–</span><span class=\"reference-lpage\">58</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Efficacy+of+indoor+plants+for+the+removal+of+single+and+mixed+volatile+organic+pollutants+and+physiological+effects+of+the+volatiles+on+the+plants&amp;author=MH+Yoo&amp;author=YJ+Kwon&amp;author=KC+Son&amp;author=SJ+Kays&amp;journal=J.+Am.+Soc.+Hort.+Sci.&amp;volume=131&amp;pages=452-58&amp;publication_year=2006&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li>\\n<li class=\"refbody\" id=\"ref-B141\">\\n<xhtml:span xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"> <span class=\"reference-surname\">Zick</span> <span class=\"reference-given-names\">CD</span>, <span class=\"reference-surname\">Smith</span> <span class=\"reference-given-names\">KR</span>, <span class=\"reference-surname\">Kowaleski-Jones</span> <span class=\"reference-given-names\">L</span>, <span class=\"reference-surname\">Uno</span> <span class=\"reference-given-names\">C</span>, <span class=\"reference-surname\">Merrill</span> <span class=\"reference-given-names\">BJ</span>. <span class=\"citation-label\">141.\\u2002</span> <span class=\"reference-year\">2013</span>. <span class=\"reference-article-title\"> Harvesting more than vegetables: the potential weight control benefits of community gardening. </span> <span class=\"reference-source\"><span class=\"reference-italic\">Am. J. Public Health</span></span> <span class=\"reference-volume\">103</span>:<span class=\"reference-fpage\">e1–</span><span class=\"reference-lpage\">6</span>\\n</xhtml:span>\\n<span class=\"js-references\">\\n<a href=\"http://scholar.google.com/scholar_lookup?title=Harvesting+more+than+vegetables%3A+the+potential+weight+control+benefits+of+community+gardening&amp;author=CD+Zick&amp;author=KR+Smith&amp;author=L+Kowaleski-Jones&amp;author=C+Uno&amp;author=BJ+Merrill&amp;journal=Am.+J.+Public+Health&amp;volume=103&amp;pages=e1-6&amp;publication_year=2013&amp;\" data-location=\"same-new-window\" class=\"js-externallink\">[Google Scholar]</a>\\n</span>\\n</li></ol>\\n</div>\\n</div>\\n<div id=\"cited\" class=\"citations hidden-js-div tabbedsection tab-pane\">\\n<div class=\"hiddenjsdiv\" id=\"itemIdForCitations\" data-doi=\"10.1146/annurev-publhealth-032013-182443\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<img class=\"citingArticlesLoading\" src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<div id=\"citationContent\"></div>\\n</div>\\n<div class=\"hiddenjsdiv itemmetadata\">\\n<div class=\"metadata_title\">Nature and Health</div>\\n<div class=\"metadata_citation\">\\n<span>Annual Review of Public Health <span class=\"citationvolume\">35</span></span><span>, 207</span><span> (2014)</span><span>; <a href=\"https://doi.org/10.1146/annurev-publhealth-032013-182443\" rel=\"external\" class=\"externallink\" title=\"undefined - opens in new window/tab\" target=\"_blank\">https://doi.org/10.1146/annurev-publhealth-032013-182443</a></span>\\n</div>\\n<div class=\"metadata_itemWebId\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n</div>\\n<div id=\"dataandmedia\" class=\"dataandmedia tabbedsection hidden-js-div tab-pane\" data-fulltexturl=\"\" data-fulltextexpandlinktext=\"Toggle display:\" data-hideinlinetablesbydefault=\"false\">\\n\\n\\n\\n<div id=\"hiddenDataMediaWebid\" class=\"hiddenjsdiv\">/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"itemDataMediaLoading\">\\n<img src=\"https://www.annualreviews.org/images/jp/spinner.gif\" alt=\"Loading\">\\n<p>Data &amp; Media loading...</p>\\n</div>\\n<div id=\"datamediacontent\"></div>\\n</div>\\n<div id=\"supplementary_data\" class=\"supplementary-container tabbedsection hidden-js-div tab-pane\">\\n<div id=\"supplementary_data_contents\" data-statslogurl=\"/statslogredirect\">\\n<h4 id=\"supp_title_1\" class=\"supplementary-item-heading-show\" style=\"padding-top:10px;\">Supplementary Data</h4>\\n<ul class=\"articleMetadata list-unstyled col-sm-8 pull-left\" style=\"margin-bottom:0;padding-bottom:0;\">\\n<li style=\"margin-bottom:0;\">\\n<p></p><p>Download <a href=\"https://www.annualreviews.org/deliver/fulltext/publhealth/35/1/pu35_hartig_supmat.pdf?itemId=/content/suppdata/10.1146/annurev-publhealth-032013-182443/1\"><strong>Supplemental References</strong></a> (PDF)</p><p><strong>Audio:</strong> Terry Hartig, Richard Mitchell, Sjerp de Vries, and Howard Frumkin discuss the current state of research on the impact that contact with nature has on individual and population health.</p><p></p><div frameborder=\"0\" src=\"https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/149328804&amp;color=0058a0&amp;auto_play=false&amp;hide_related=false&amp;show_artwork=true\" data-original-tag=\"iframe\">\\n  \\n\\n  \\n  <link rel=\"dns-prefetch\" href=\"https://api-widget.soundcloud.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://sb.scorecardresearch.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://api.soundcloud.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://va.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i1.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i2.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" href=\"https://i3.sndcdn.com/\">\\n  <link rel=\"dns-prefetch\" 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list-unstyled\">\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052020-110732\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-052020-110732\" dir=\"auto\" class=\"\"> \\nSocial Connection as a Public Health Issue: The Evidence and a Systemic Framework for Prioritizing the “Social” in Social Determinants of Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\">Julianne Holt-Lunstad</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">193–213\\n(21)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102529\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-090419-102529\" dir=\"auto\" class=\"\"> \\nUnderstanding and Responding to Health Literacy as a Social Determinant of Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Don Nutbeam</span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\nJane E. Lloyd</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">159–173\\n(15)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-012420-105026\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-012420-105026\" dir=\"auto\" class=\"\"> \\nExtreme Weather and Climate Change: Population Health and Health System Implications\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Kristie L. Ebi</span><span class=\"author-list__item \">,\\nJennifer Vanos</span><span class=\"author-list__item \">,\\nJane W. Baldwin</span><span class=\"author-list__item \">,\\nJesse E. Bell</span><span class=\"author-list__item \">,\\nDavid M. Hondula</span><span class=\"author-list__item \">,\\nNicole A. Errett</span><span class=\"author-list__item \">,\\nKatie Hayes</span><span class=\"author-list__item \">,\\nColleen E. Reid</span><span class=\"author-list__item \">,\\nShubhayu Saha</span><span class=\"author-list__item \">,\\nJune Spector</span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\nPeter Berry</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">293–315\\n(23)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-052620-103528\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-052620-103528\" dir=\"auto\" class=\"\"> \\nEliminating Explicit and Implicit Biases in Health Care: Evidence and Research Needs\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \">Monica B. Vela</span><span class=\"author-list__item \">,\\nAmarachi I. Erondu</span><span class=\"author-list__item \">,\\nNichole A. Smith</span><span class=\"author-list__item \">,\\nMonica E. Peek</span><span class=\"author-list__item \">,\\nJames N. Woodruff</span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\nMarshall H. Chin</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">477–501\\n(25)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-090419-102409\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-090419-102409\" dir=\"auto\" class=\"\"> \\nClimate Change Disinformation and How to Combat It\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\">Stephan Lewandowsky</span>\\n</span></div>\\n</div>\\n<div><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">1–21\\n(21)\\n</span></div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li>\\n</li>\\n</ul>\\n<form class=\"ahahTocArticles\">\\n\\n\\n\\n</form>\\n</div> \\n\\n<div id=\"hiddenmostviewedparent\" class=\"hiddenjsdiv hidden-js-div\">content/journals/publhealth</div>\\n<div id=\"hiddenmostviewedparenttype\" class=\"hiddenjsdiv hidden-js-div\">Journal</div>\\n<div id=\"hiddenmostviewednumber\" class=\"hiddenjsdiv hidden-js-div\">5</div>\\n<div id=\"hiddenmostviewednumbershown\" class=\"hiddenjsdiv hidden-js-div\">3</div>\\n<div id=\"hiddenmostviewedemptymessage\" class=\"hiddenjsdiv hidden-js-div\">false</div>\\n<div id=\"hiddenmostviewedlanguage\" class=\"hiddenjsdiv hidden-js-div\">en</div>\\n\\n</div>\\n</div>\\n<div class=\"mostcitedcontainer panel panel-default \">\\n<div class=\"panel-heading\">\\n<h2 class=\"panel-title\">\\nMost Cited\\n<span class=\"rssicon\">\\n<a href=\"https://www.annualreviews.org/rss/content/journals/publhealth/mostcitedarticles?fmt=rss\" class=\"rssiconheader rssFeed externallink\" title=\"Subscribe to most Cited RSS feed\">\\n<i class=\"fa fa-rss\"></i>\\n<span class=\"sr-only\">Most Cited RSS feed</span>\\n</a>\\n</span>\\n</h2>\\n</div>\\n<div class=\"panel-body\">\\n<div id=\"mostcited\">\\n<ul class=\"separated-list list-unstyled\">\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.19.1.173_1\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.19.1.173\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.19.1.173\" dir=\"auto\" class=\"\"> \\nREVIEW OF COMMUNITY-BASED RESEARCH: Assessing Partnership Approaches to Improve Public Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Barbara+A.+Israel&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Barbara A. Israel</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Amy+J.+Schulz&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Amy J. Schulz</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Edith+A.+Parker&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Edith A. Parker</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Adam+B.+Becker&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Adam B. Becker</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 19 \\n(1998), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">173–202\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-032013-182443_2\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-032013-182443\" dir=\"auto\" class=\"\"> \\nNature and Health\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Terry+Hartig&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Terry Hartig</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Richard+Mitchell&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Richard Mitchell</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Sjerp+de+Vries&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Sjerp de Vries</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Howard+Frumkin&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Howard Frumkin</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 35 \\n(2014), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">207–228\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031912-114409_3\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031912-114409\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031912-114409\" dir=\"auto\" class=\"\"> \\nThe Epidemiology of Depression Across Cultures\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Ronald+C.+Kessler&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Ronald C. Kessler</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Evelyn+J.+Bromet&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Evelyn J. Bromet</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 34 \\n(2013), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">119–138\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-040218-043750_4\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-040218-043750\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-040218-043750\" dir=\"auto\" class=\"\"> \\nRacism and Health: Evidence and Needed Research\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=David+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David R. Williams</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Jourdyn+A.+Lawrence&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Jourdyn A. Lawrence</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Brigette+A.+Davis&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Brigette A. Davis</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 40 \\n(2019), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">105–125\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.18.1.341_5\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.18.1.341\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.18.1.341\" dir=\"auto\" class=\"\"> \\nMeasuring Social Class in US Public Health Research: Concepts, Methodologies, and Guidelines\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=N.+Krieger&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">N. Krieger</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=D.+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">D. R. Williams</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=N.+E.+Moss&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">N. E. Moss</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 18 \\n(1997), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">341–378\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031210-101218_6\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031210-101218\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031210-101218\" dir=\"auto\" class=\"\"> \\nThe Social Determinants of Health: Coming of Age\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Paula+Braveman&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Paula Braveman</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Susan+Egerter&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Susan Egerter</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=David+R.+Williams&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David R. Williams</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 32 \\n(2011), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">381–398\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev.publhealth.012809.103604_7\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.publhealth.012809.103604\" data-itemid=\"/content/journals/10.1146/annurev.publhealth.012809.103604\" dir=\"auto\" class=\"\"> \\nThe Role of Behavioral Science Theory in Development and Implementation of Public Health Interventions\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Karen+Glanz&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Karen Glanz</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=Donald+B.+Bishop&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Donald B. Bishop</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 31 \\n(2010), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">399–418\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev.pu.15.050194.000543_8\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev.pu.15.050194.000543\" data-itemid=\"/content/journals/10.1146/annurev.pu.15.050194.000543\" dir=\"auto\" class=\"\"> \\nAcute Respiratory Effects of Particulate Air Pollution\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=D.+W.+Dockery&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">D. W. Dockery</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=C.+A.+Pope&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">C. A. Pope</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 15 \\n(1994), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">107–132\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-032315-021402_9\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032315-021402\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-032315-021402\" dir=\"auto\" class=\"\"> \\nMediation Analysis: A Practitioner\\'s Guide\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item author-list__item--last\"><a href=\"https://www.annualreviews.org/search?value1=Tyler+J.+VanderWeele&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Tyler J. VanderWeele</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 37 \\n(2016), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">17–32\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li class=\"hiddenjsdiv\" id=\"mostCited__content_journals_10.1146_annurev-publhealth-031914-122957_10\">\\n<div class=\"table-cell meta-data-container pd-remove\">\\n<ul class=\"list-unstyled browse-item js-browse-item\" role=\"none\">\\n<li role=\"none\">\\n<div class=\"articleMetadata js-articleMetadata\">\\n<div class=\"articleMetadataInner js-articleMetadataInner\">\\n<h3 class=\"accessIcons js-accessIcons\">\\n<span class=\"articleTitle js-articleTitle title\">\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-031914-122957\" data-itemid=\"/content/journals/10.1146/annurev-publhealth-031914-122957\" dir=\"auto\" class=\"\"> \\nThe Prescription Opioid and Heroin Crisis: A Public Health Approach to an Epidemic of Addiction\\n</a>\\n</span>\\n</h3>\\n<div class=\"authorsWithPopup\">\\n<div><span class=\"meta-key authors_label \">\\n</span>\\n<span class=\"meta-value authors \">\\n<span class=\"author-list__item \"><a href=\"https://www.annualreviews.org/search?value1=Andrew+Kolodny&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Andrew Kolodny</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=David+T.+Courtwright&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">David T. Courtwright</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Catherine+S.+Hwang&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Catherine S. Hwang</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Peter+Kreiner&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Peter Kreiner</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=John+L.+Eadie&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">John L. Eadie</a></span><span class=\"author-list__item \">,\\n<a href=\"https://www.annualreviews.org/search?value1=Thomas+W.+Clark&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">Thomas W. Clark</a></span><span class=\"author-list__item author-list__item--last\">&nbsp;and\\n<a href=\"https://www.annualreviews.org/search?value1=G.+Caleb+Alexander&amp;option1=author&amp;noRedirect=true&amp;sortField=prism_publicationDate&amp;sortDescending=true\" class=\"nonDisambigAuthorLink\">G. Caleb Alexander</a></span>\\n</span></div>\\n</div>\\n<div class=\"volYearPageRange\">\\nVol. 36 \\n(2015), \\n<span><span class=\"meta-key pageRange_label\">pp.</span>\\n<span class=\"meta-value pageRange\">559–574\\n</span></span>\\n</div>\\n</div>\\n</div>\\n</li>\\n</ul>\\n</div>\\n</li>\\n<li>\\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"moreLink std-display\" role=\"button\" aria-controls=\"mostCited__content_journals_10.1146_annurev-publhealth-031210-101218_6 mostCited__content_journals_10.1146_annurev.publhealth.012809.103604_7 mostCited__content_journals_10.1146_annurev.pu.15.050194.000543_8 mostCited__content_journals_10.1146_annurev-publhealth-032315-021402_9 mostCited__content_journals_10.1146_annurev-publhealth-031914-122957_10\" aria-expanded=\"false\" aria-label=\"more cited articles\">\\n<i class=\"fa fa-plus\"></i> More\\n</a> \\n<a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"lessLink std-display\" role=\"button\" aria-controls=\"mostCited__content_journals_10.1146_annurev-publhealth-031210-101218_6 mostCited__content_journals_10.1146_annurev.publhealth.012809.103604_7 mostCited__content_journals_10.1146_annurev.pu.15.050194.000543_8 mostCited__content_journals_10.1146_annurev-publhealth-032315-021402_9 mostCited__content_journals_10.1146_annurev-publhealth-031914-122957_10\" aria-expanded=\"true\" aria-label=\"less cited articles\">\\n<i class=\"fa fa-minus\"></i> Less\\n</a>\\n</li>\\n</ul>\\n<form class=\"ahahTocArticles\">\\n\\n\\n\\n</form>\\n</div>\\n</div>\\n</div>\\n\\n</main>\\n<div id=\"sidebar_right\">\\n<div class=\"mobile-tools\">\\n<button type=\"button\" id=\"mobile-tools-button\" data-parent=\"#bellowheadercontainer\" class=\"navbar-toggle toggle-arrow\" data-toggle=\"collapse\" data-target=\"#tools-nav\" aria-expanded=\"false\">\\n<span class=\"sr-only\">Toggle navigation</span>\\n<span>Tools <i class=\"fa fa-angle-down\"></i></span>\\n</button>\\n</div>\\n\\n\\n</div>\\n</div>\\n\\n</div>\\n</div>\\n<div id=\"mm-blocker\" class=\"mm-slideout\" tabindex=\"1\" aria-label=\"site menu\" aria-expanded=\"false\" role=\"button\"></div>\\n<div class=\"hiddenblurbsvalues hidden-js-div\">\\n<div id=\"required_field\">\\nThis is a required field\\n</div>\\n<div id=\"valid_email_address\">\\nPlease enter a valid email address\\n</div>\\n<div id=\"makelivesuccess\">Approval was a Success</div>\\n<div id=\"makeliveinvaliddata\">Invalid data</div>\\n<div id=\"makeliveerror\">An Error Occurred</div>\\n<div id=\"makelivepartialsuccess\">Approval was partially successful, following selected items could not be processed due to error</div>\\n</div> \\n<form class=\"hidden\" action=\"https://www.annualreviews.org/cart/add\" method=\"get\" id=\"hiddenPurchaseForm\"></form>\\n<form class=\"hidden\" action=\"https://www.annualreviews.org/carnet\" method=\"post\" id=\"hiddenCarnetForm\"></form>\\n<div class=\"siqPageTitle hidden\">Annual Reviews:</div>\\n<div class=\"siqItemId hidden\">http://instance.metastore.ingenta.com/content/journals/10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"siqDoi hidden\">10.1146/annurev-publhealth-032013-182443</div>\\n<div class=\"siqPub2webEventType hidden\">SEARCH_EXPAND_ITEM</div>\\n \\n<!--[if lt IE 7]>\\n<script src=\"/js/v/12.1.1.1/jp/IE7.js\" ></script>\\n<![endif]-->\\n<!--[if lte IE 9]>\\n<script src=\"/js/v/12.1.1.1/hybrid/placeholder.js\" ></script>\\n<![endif]-->\\n \\n\\n\\n<div id=\"SHR\" title=\"shr-utils\" style=\"display: none; border: none;\" data-original-tag=\"iframe\"></div>\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n<ul class=\"ui-autocomplete ui-menu ui-widget ui-widget-content ui-corner-all\" id=\"ui-id-1\" tabindex=\"0\" style=\"z-index: 1; display: none;\"></ul><div class=\"ui-dialog ui-widget ui-widget-content ui-corner-all ui-draggable ui-resizable\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"ui-id-2\" style=\"outline: 0px; z-index: 1000; position: relative; top: -12895.4px; left: 0px; display: none; height: auto; width: 480px;\"><div class=\"ui-dialog-titlebar ui-widget-header ui-corner-all ui-helper-clearfix\"><span id=\"ui-id-2\" class=\"ui-dialog-title\">&nbsp;</span><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"ui-dialog-titlebar-close ui-corner-all\" role=\"button\"><span class=\"ui-icon ui-icon-closethick\">close</span></a></div><div id=\"figuredialog\" class=\"ui-dialog-content ui-widget-content\" style=\"width: auto; min-height: 0px; height: 622px;\"></div><div class=\"ui-resizable-handle ui-resizable-n\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-e\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-s\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-w\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-se ui-icon ui-icon-gripsmall-diagonal-se ui-icon-grip-diagonal-se\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-sw\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-ne\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-nw\" style=\"z-index: 1000;\"></div></div><div class=\"ui-dialog ui-widget ui-widget-content ui-corner-all ui-draggable ui-resizable\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"ui-id-3\" style=\"display: none; outline: 0px; z-index: 1000; position: relative;\"><div class=\"ui-dialog-titlebar ui-widget-header ui-corner-all ui-helper-clearfix\"><span id=\"ui-id-3\" class=\"ui-dialog-title\">&nbsp;</span><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"ui-dialog-titlebar-close ui-corner-all\" role=\"button\"><span class=\"ui-icon ui-icon-closethick\">close</span></a></div><div id=\"tabledialog\" class=\"ui-dialog-content ui-widget-content\"></div><div class=\"ui-resizable-handle ui-resizable-n\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-e\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-s\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-w\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-se ui-icon ui-icon-gripsmall-diagonal-se ui-icon-grip-diagonal-se\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-sw\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-ne\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-nw\" style=\"z-index: 1000;\"></div></div><div class=\"ui-dialog ui-widget ui-widget-content ui-corner-all ui-draggable ui-resizable\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"ui-id-4\" style=\"display: none; 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outline: 0px; z-index: 1000; position: relative;\"><div class=\"ui-dialog-titlebar ui-widget-header ui-corner-all ui-helper-clearfix\"><span id=\"ui-id-5\" class=\"ui-dialog-title\">&nbsp;</span><a href=\"https://www.annualreviews.org/content/journals/10.1146/annurev-publhealth-032013-182443#\" class=\"ui-dialog-titlebar-close ui-corner-all\" role=\"button\"><span class=\"ui-icon ui-icon-closethick\">close</span></a></div><div id=\"multimediadialog\" class=\"ui-dialog-content ui-widget-content\"></div><div class=\"ui-resizable-handle ui-resizable-n\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-e\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-s\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-w\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-se ui-icon ui-icon-gripsmall-diagonal-se ui-icon-grip-diagonal-se\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-sw\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-ne\" style=\"z-index: 1000;\"></div><div class=\"ui-resizable-handle ui-resizable-nw\" style=\"z-index: 1000;\"></div></div>\\n</body></html>'"
      ]
     },
     "execution_count": 75,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "crawl_result.data[0].html"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 80,
   "id": "c45e0818",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "6594"
      ]
     },
     "execution_count": 80,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "scrape_result.html.find('Abstract')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 83,
   "id": "9f62d4d0",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "56"
      ]
     },
     "execution_count": 83,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "scrape_result.html[6594:].find(\"<p>\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "3a32c4fc",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1183"
      ]
     },
     "execution_count": 85,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "scrape_result.html[6594+56:].find(\"</p>\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 88,
   "id": "1da76688",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'<p>Urbanization, resource exploitation, and lifestyle changes have diminished possibilities for human contact with nature in many societies. Concern about the loss has helped motivate research on the health benefits of contact with nature. Reviewing that research here, we focus on nature as represented by aspects of the physical environment relevant to planning, design, and policy measures that serve broad segments of urbanized societies. We discuss difficulties in defining “nature” and reasons for the current expansion of the research field, and we assess available reviews. We then consider research on pathways between nature and health involving air quality, physical activity, social cohesion, and stress reduction. Finally, we discuss methodological issues and priorities for future research. The extant research does describe an array of benefits of contact with nature, and evidence regarding some benefits is strong; however, some findings indicate caution is needed in applying beliefs about those benefits, and substantial gaps in knowledge remain. [<a href=\"http://www.annualreviews.org/doi/full/10.1146/annurev-pu-35-102115-200001\" target=\"xrefwindow\">Erratum</a>]<'"
      ]
     },
     "execution_count": 88,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "scrape_result.html[6594+56:6594+56+1184]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 61,
   "id": "b54e7926",
   "metadata": {},
   "outputs": [],
   "source": [
    "import json"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 48,
   "id": "48b00757",
   "metadata": {},
   "outputs": [],
   "source": [
    "\n",
    "with open(\"prompt.txt\", \"r\") as f:\n",
    "    prompt = f.read()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 49,
   "id": "bc9389d0",
   "metadata": {},
   "outputs": [],
   "source": [
    "chat_client = client.chats.create(\n",
    "    model=\"gemini-2.5-flash\"\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 50,
   "id": "645d0748",
   "metadata": {},
   "outputs": [],
   "source": [
    "def get_response(user):\n",
    "    response = chat_client.send_message(user)\n",
    "    return response.candidates[0].content.parts[0].text"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 91,
   "id": "eeba3a11",
   "metadata": {},
   "outputs": [],
   "source": [
    "import json\n",
    "def convert_to_json(text):\n",
    "    start = text.find(\"{\")\n",
    "    end = text[::-1].find(\"}\")\n",
    "    json_text = text[start : -end]\n",
    "    try:\n",
    "        return json.loads(json_text)\n",
    "    except Exception as e:\n",
    "        return \"Json Parse Error due to \" + str(e)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 52,
   "id": "325acc02",
   "metadata": {},
   "outputs": [],
   "source": [
    "response = get_response(prompt)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "id": "d8777427",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{\n",
      "    \"state\": \"START\",\n",
      "    \"user\": \"I am looking for collaborators in the field of quantum machine learning, specifically those working on algorithms for noisy intermediate-scale quantum (NISQ) devices. My current work focuses on variational quantum algorithms for optimization problems.\"\n",
      "}\n"
     ]
    }
   ],
   "source": [
    "print(convert_to_json(response))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 54,
   "id": "663a831a",
   "metadata": {},
   "outputs": [],
   "source": [
    "inp = {\n",
    "    \"state\" : \"START\",\n",
    "    \"user\" : \"I am searching for Papers on Music Generation using AI\"\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 55,
   "id": "3e867c21",
   "metadata": {},
   "outputs": [],
   "source": [
    "response = get_response(str(inp))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 76,
   "id": "70185dfe",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "8 4 \n",
      "\n",
      "{\n",
      "    \"state\": \"CALL\",\n",
      "    \"function_name\": \"get_results\",\n",
      "    \"params\": {\n",
      "        \"query\": \"Music Generation using AI\"\n",
      "    }\n",
      "}\n",
      "{'state': 'CALL', 'function_name': 'get_results', 'params': {'query': 'Music Generation using AI'}}\n"
     ]
    }
   ],
   "source": [
    "output = convert_to_json(response)\n",
    "print(output)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 77,
   "id": "bcb615b8",
   "metadata": {},
   "outputs": [],
   "source": [
    "import rm\n",
    "\n",
    "\n",
    "def get_observation(function,inp):\n",
    "    functions = [\"get_results\",\"scrape_web\"]\n",
    "    if function == functions[0]:\n",
    "        profiles,answer,keys = rm.get_results(inp)\n",
    "        out_dict = {\n",
    "            \"state\" : \"OBSERVATION\",\n",
    "            \"observation\" : {\n",
    "            \"profiles\" : profiles,\n",
    "            \"answer\" : answer,\n",
    "            \"keys\" : keys\n",
    "            }\n",
    "        }\n",
    "    elif function == functions[1]:\n",
    "        html_text = rm.scrape_web(inp)\n",
    "        out_dict = {\n",
    "            \"state\" : \"OBSERVATION\",\n",
    "            \"observation\" : {\n",
    "            \"html_text\" : html_text\n",
    "            }\n",
    "        }\n",
    "    else:\n",
    "        out_dict = {\n",
    "            \"state\" : \"OBSERVATION\",\n",
    "            \"observation\" : {\n",
    "            \"message\":\"Function Not found, Please Retry\"\n",
    "            }\n",
    "        }\n",
    "    return out_dict"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 86,
   "id": "18ffb283",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Music Generation using AI\n"
     ]
    }
   ],
   "source": [
    "for i in output[\"params\"].keys():\n",
    "    inp = output[\"params\"][i]\n",
    "    print(inp)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 93,
   "id": "739a05dc",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Here are some prominent papers on Music Generation using AI:\n",
      "\n",
      "1.  **Deep Learning for Music Generation: A Survey**\n",
      "    *   **Link:** https://arxiv.org/pdf/1705.08630.pdf\n",
      "    *   **Description:** A comprehensive survey covering various deep learning techniques like RNNs, LSTMs, and GANs applied to music generation.\n",
      "    *   **Publication Info:** arXiv, 2017 (highly cited).\n",
      "\n",
      "2.  **MuseNet: Creating Music with Transformers**\n",
      "    *   **Link:** https://openai.com/blog/musenet/\n",
      "    *   **Description:** Details MuseNet, a deep neural network from OpenAI capable of generating 4-minute musical compositions with diverse instrumentation, leveraging Transformer architecture.\n",
      "    *   **Publication Info:** OpenAI Blog, 2019.\n",
      "\n",
      "3.  **MidiNet: A Convolutional Generative Adversarial Network for Symbolic-domain Music Generation**\n",
      "    *   **Link:** https://arxiv.org/pdf/1703.04107.pdf\n",
      "    *   **Description:** Introduces MidiNet, a conditional GAN model designed for generating music in the symbolic domain (MIDI format).\n",
      "    *   **Publication Info:** Neural Information Processing Systems (NIPS), 2017.\n",
      "\n",
      "These papers provide a good starting point for exploring the field, covering foundational surveys, state-of-the-art models like those using Transformers, and specific techniques such as GANs for symbolic music generation.\n"
     ]
    }
   ],
   "source": [
    "while output[\"state\"] != \"OUTPUT\":\n",
    "    if output[\"state\"] == \"PLAN\":\n",
    "        response = get_response(str(output))\n",
    "        output = convert_to_json(response)\n",
    "        print(output)\n",
    "    elif output[\"state\"] == \"CALL\":\n",
    "        function = output[\"function_name\"]\n",
    "        for i in output[\"params\"].keys():\n",
    "            inp = output[\"params\"][i]\n",
    "            print(inp)\n",
    "        obs = get_observation(function,inp)\n",
    "        response = get_response(str(obs))\n",
    "        output = convert_to_json(response)\n",
    "        print(output)\n",
    "    elif output[\"state\"] == \"OBSERVATION\":\n",
    "        response = get_response(str(output))\n",
    "        output = convert_to_json(response)\n",
    "        print(output)\n",
    "    else:\n",
    "        print(output)\n",
    "        break\n",
    "\n",
    "print(output[\"output\"])\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "f5b69c9c",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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