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Ectotherm | An ectotherm ( from the Greek ἐκτός ( ektós ) `` outside '' and θερμός ( thermós ) `` hot '' ) , is an organism in which internal physiological sources of heat are of relatively small or quite negligible importance in controlling body temperature . Such organisms ( for example frogs ) rely on environmental heat sources... | |
Earth's_rotation | Earth 's rotation is the rotation of the planet Earth around its own axis . The Earth rotates from the west towards east . As viewed from North Star or polestar Polaris , the Earth turns counter-clockwise . The North Pole , also known as the Geographic North Pole or Terrestrial North Pole , is the point in the Northe... | |
Economy_of_North_America | The economy of North America comprises more than 565 million people ( 8 % of the world population ) in its 23 sovereign states and 15 dependent territories . It is marked by a sharp division between the predominantly English speaking countries of Canada and the United States , which are among the wealthiest and most de... | |
Economics_of_global_warming | The economics of global warming concerns the economic aspects of global warming ; this can inform policies that governments might consider in response . A number of factors make this a difficult problem from both economic and political perspectives : it is a long-term , intergenerational problem ; benefits and costs ar... | |
Ecological_efficiency | Ecological efficiency describes the efficiency with which energy is transferred from one trophic level to the next . It is determined by a combination of efficiencies relating to organismic resource acquisition and assimilation in an ecosystem . Primary production occurs in autotrophic organisms of an ecosystem . Pho... | |
Economic_statistics | Economic statistics is a topic in applied statistics that concerns the collection , processing , compilation , dissemination , and analysis of economic data . It is also common to call the data themselves ` economic statistics ' , but for this usage see economic data . The data of concern to economic statistics may inc... | |
Economy_of_the_United_States | The United States is the world 's largest national economy in nominal terms and second largest according to purchasing power parity ( PPP ) , representing 22 % of nominal global GDP and 17 % of gross world product ( GWP ) . The United States ' GDP was estimated to be $ 18.56 trillion in 2016 . The U.S. dollar is the cu... | |
Ecosystem_health | Ecosystem health is a metaphor used to describe the condition of an ecosystem . Ecosystem condition can vary as a result of fire , flooding , drought , extinctions , invasive species , climate change , mining , overexploitation in fishing , farming or logging , chemical spills , and a host of other reasons . There is n... | |
Ecotax | An Ecotax ( short for ecological taxation ) is a tax levied on activities which are considered to be harmful to the environment and is intended to promote environmentally friendly activities via economic incentives . Such a policy can complement or avert the need for regulatory ( command and control ) approaches . Ofte... | |
Ecological_resilience | In ecology , resilience is the capacity of an ecosystem to respond to a perturbation or disturbance by resisting damage and recovering quickly . Such perturbations and disturbances can include stochastic events such as fires , flooding , windstorms , insect population explosions , and human activities such as deforesta... | |
Ecology | Ecology ( from οἶκος , `` house '' , or `` environment '' ; - λογία , `` study of '' ) is the scientific analysis and study of interactions among organisms and their environment . It is an interdisciplinary field that includes biology , geography , and Earth science . Ecology includes the study of interactions that org... | |
Eastern_world | The term Eastern world refers very broadly to the various cultures or social structures and philosophical systems , depending on the context , most often including at least part of Asia or geographically the countries and cultures east of Europe , north of Oceania . The term is usually not used by people in this region... | |
Disco | Disco is a genre of dance music containing elements of funk , soul , pop and salsa . It achieved popularity during the mid-1970s to the early 1980s . Its initial audiences in the U.S. were club-goers from the gay , African American , Italian American , Latino , and psychedelic communities in Philadelphia and New York C... | |
Earth's_orbit | Earth 's orbit is the path through which the Earth travels around the Sun . The average distance between the Earth and the Sun is 149.60 million kilometers ( 92.96 million miles ) , and a complete orbit occurs every days ( 1 sidereal year ) , during which time Earth travels 940 million kilometers ( 584 million miles ) ... | |
ECMWF_re-analysis | The ECMWF re-analysis project is a meteorological reanalysis project . The first reanalysis product , ERA-15 , generated re-analyses for approximately 15 years , from December 1978 to February 1994 . The second product , ERA-40 ( originally intended as a 40-year reanalysis ) begins in 1957 ( the International Geophys... | |
East_Antarctic_Ice_Sheet | The East Antarctic Ice Sheet ( EAIS ) is one of two large ice sheets in Antarctica , and the largest on the entire planet . The EAIS lies between 45 ° west and 168 ° east longitudinally . The EAIS is considerably larger in area and mass than the West Antarctic Ice Sheet ( WAIS ) . It is separated from the WAIS by the... | |
Dust_Bowl | The Dust Bowl , also known as the Dirty Thirties , was a period of severe dust storms that greatly damaged the ecology and agriculture of the American and Canadian prairies during the 1930s ; severe drought and a failure to apply dryland farming methods to prevent wind erosion ( the Aeolian processes ) caused the pheno... | |
Drowning | Drowning is defined as respiratory impairment from being in or under a liquid . It is further classified by outcome into : death , ongoing health problems , and no ongoing health problems . Drowning itself is quick and silent , although it may be preceded by distress which is more visible . Generally , in the early s... | |
Economy_of_Spain | Spain has the fourteenth-largest economy by nominal GDP in the world , and it is also among the largest in the world by purchasing power parity . The country is a member of the European Union , the Organisation for Economic Co-operation and Development , and the World Trade Organization . The Spanish economy is the f... | |
Doubling_time | The doubling time is the period of time required for a quantity to double in size or value . It is applied to population growth , inflation , resource extraction , consumption of goods , compound interest , the volume of malignant tumours , and many other things that tend to grow over time . When the relative growth ra... | |
Ecological_correlation | In statistics , an ecological correlation is a correlation between two variables that are group means , in contrast to a correlation between two variables that describe individuals . For example , one might study the correlation between physical activity and weight among sixth-grade children . A study at the individual... | |
Economic_growth | Economic growth is the increase in the inflation-adjusted market value of the goods and services produced by an economy over time . It is conventionally measured as the percent rate of increase in real gross domestic product , or real GDP , usually in per capita terms . Growth is usually calculated in real terms -- i... | |
Economy | An economy ( From Greek οίκος -- `` household '' and νęμoμαι -- `` manage '' ) is an area of the production , distribution , or trade , and consumption of goods and services by different agents in a given geographical location in various countries . Understood in its broadest sense , ` The economy is defined as a socia... | |
Earth's_magnetic_field | Earth 's magnetic field , also known as the geomagnetic field , is the magnetic field that extends from the Earth 's interior out into space , where it meets the solar wind , a stream of charged particles emanating from the Sun . Its magnitude at the Earth 's surface ranges from 25 to 65 microteslas ( 0.25 to 0.65 gaus... | |
Earthquake | An earthquake ( also known as a quake , tremor or temblor ) is the shaking of the surface of the Earth , resulting from the sudden release of energy in the Earth 's lithosphere that creates seismic waves . Earthquakes can range in size from those that are so weak that they can not be felt to those violent enough to tos... | |
Discoveries_of_exoplanets | An exoplanet ( extrasolar planet ) is a planet located outside the Solar System . The first planet was announced in 1992 , with two planets found orbiting a pulsar . The first confirmation of an exoplanet orbiting a main-sequence star was made in 1995 , when a giant planet was found in a four-day orbit around the nearb... | |
Ecology_of_the_Rocky_Mountains | The ecology of the Rocky Mountains is diverse due to the effects of a variety of environmental factors . The Rocky Mountains are the major mountain range in western North America , running from the far north of British Columbia in Canada to New Mexico in the southwestern United States , climbing from the Great Plains a... | |
Dry_season | The dry season is a yearly period of low rainfall , especially in the tropics . The weather in the tropics is dominated by the tropical rain belt , which moves from the northern to the southern tropics and back over the course of the year . The tropical rain belt lies in the southern hemisphere roughly from October to ... | |
Dunning–Kruger_effect | In the field of psychology , the Dunning -- Kruger effect is a cognitive bias , wherein persons of low ability suffer from illusory superiority when they mistakenly assess their cognitive ability as greater than it is . The cognitive bias of illusory superiority derives from the metacognitive inability of low-ability p... | |
Double_negative | A double negative is a grammatical construction occurring when two forms of negation are used in the same sentence . Multiple negation is the more general term referring to the occurrence of more than one negative in a clause . In some languages , double negatives cancel one another and produce an affirmative ; in othe... | |
Dolomitization | Dolomitization is a geological process by which the carbonate mineral dolomite is formed when magnesium ions replace calcium ions in another carbonate mineral , calcite . It is common for this mineral alteration into dolomite to take place due to evaporation of water in the sabkha area . Dolomitization involves substan... | |
Earth's_critical_zone | Earth 's critical zone is the `` heterogeneous , near surface environment in which complex interactions involving rock , soil , water , air , and living organisms regulate the natural habitat and determine the availability of life-sustaining resources '' ( National Research Council , 2001 ) . The Critical Zone , surfac... | |
Economics | Economics ( UK English : -LSB- iːkəˈnɒmɪks -RSB- , -LSB- ɛkəˈnɒmɪks -RSB- US English : -LSB- ɛkəˈnɑːmɪks -RSB- , -LSB- ikəˈnɑːmɪks -RSB- ) is `` a social science concerned chiefly with description and analysis of the production , distribution , and consumption of goods and services '' . Economics focuses on the behav... | |
Earth's_internal_heat_budget | The flow of heat from Earth 's interior to the surface is estimated at 47 terawatts ( TW ) and comes from two main sources in roughly equal amounts : the radiogenic heat produced by the radioactive decay of isotopes in the mantle and crust , and the primordial heat left over from the formation of the Earth . Earth 's... | |
Drainage_basin | A drainage basin or catchment area is any area of land where precipitation collects and drains off into a common outlet , such as into a river , bay , or other body of water . The drainage basin includes all the surface water from rain runoff , snowmelt , and nearby streams that run downslope towards the shared outlet ... | |
Dissolution_(chemistry) | The dissolution of gases , liquids , or solids into a liquid or other solvent is a process by which these original states become solutes ( dissolved components ) , forming a solution of the gas , liquid , or solid in the original solvent . Solid solutions are the result of dissolution of one solid into another , and oc... | |
Ecoregion | An ecoregion ( ecological region ) is an ecologically and geographically defined area that is smaller than a bioregion , which in turn is smaller than an ecozone . All three of these are either less or greater than an ecosystem . Ecoregions cover relatively large areas of land or water , and contain characteristic , ge... | |
Ecological_footprint | The ecological footprint measures human demand on nature , i.e. , the quantity of nature it takes to support people or an economy . It tracks this demand through an ecological accounting system . The accounts contrast the biologically productive area people use for their consumption to the biologically productive area ... | |
Earth_ellipsoid | An Earth ellipsoid is a mathematical figure approximating the shape of the Earth , used as a reference frame for computations in geodesy , astronomy and the geosciences . Various different ellipsoids have been used as approximations . It is an ellipsoid of revolution , whose short ( polar ) axis ( connecting the two ... | |
Dry_state | A dry state is a state in the United States in which the manufacture , distribution , importation , and sale of alcoholic beverages are prohibited or tightly restricted . While some states , such as North Dakota , entered the United States as dry states , others went dry after passage of prohibition legislation . Curre... | |
Dumbing_down | Dumbing down is the deliberate oversimplification of intellectual content within education , literature , cinema , news , video games and culture in order to relate to those unable to assimilate more sophisticated information . The term `` dumbing down '' originated in 1933 as movie-business slang , used by motion pi... | |
Earth_system_science | Earth system science ( ESS ) is the application of systems science to the Earth sciences . In particular , it considers interactions between the Earth 's `` spheres '' -- atmosphere , hydrosphere , cryosphere , geosphere , pedosphere , biosphere , and , even , the magnetosphere -- as well as the impact of human societi... | |
Ecological_debt | Ecological debt is the level of resource consumption and waste discharge by a population in excess of locally sustainable natural production and assimilative capacity . The term has been used since 1992 by some environmental organizations from the Global south . The first one to use this term was the Instituto de Eco... | |
Doublethink | Doublethink is the act of simultaneously accepting two mutually contradictory beliefs as correct , often in distinct social contexts . Doublethink is related to , but differs from , hypocrisy and neutrality . Also related is cognitive dissonance , in which contradictory beliefs cause conflict in one 's mind . Doublethi... | |
Earth's_energy_budget | Earth 's energy budget accounts for the energy Earth receives from the Sun . Much of this energy is lost when the earth re-radiates it back into outer space , and the rest of the energy is distributed throughout the five components of Earth 's climate system . This system is made up of earth 's water , ice , atmosphere... | |
Eastern_Hemisphere | The Eastern Hemisphere is a geographical term for the half of the earth that is east of the prime meridian ( which crosses Greenwich , England ) and west of the antimeridian . It is also used to refer to Europe , Asia , Africa , and Australia , in contrast with the Western Hemisphere , which includes North and South Am... | |
Early_2009_southeastern_Australia_heat_wave | The early 2009 southeastern Australia heat wave was a heat wave that commenced in late January and led to record-breaking prolonged high temperatures in the region . The heat wave is considered one of the , if not the , most extreme in the region 's history . During the heat wave , fifty separate locations set various ... | |
Dubiofossil | The term dubiofossil is a portmanteau word used in geology and paleontology for a problematic structure that looks like a fossil , but whose biologic origin is uncertain . ( From Latin dubius , + fossil ) . It has been mainly used for remains found in rocks dating from the early history of the Earth ( Precambrian rocks... | |
Discovery_science | Discovery science ( also known as discovery-based science ) is a scientific methodology which emphasizes analysis of large volumes of experimental data with the goal of finding new patterns or correlations , leading to hypothesis formation and other scientific methodologies . Discovery-based methodologies are often v... | |
Ecosystem | An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment ( things like air , water and mineral soil ) , interacting as a system . These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows . As ecosystems are defi... | |
Economic_system | An economic system is a system of production , resource allocation , and distribution of goods and services within a society or a given geographic area . It includes the combination of the various institutions , agencies , entities , decision-making processes , and patterns of consumption that comprise the economic str... | |
Early_2014_North_American_cold_wave | The 2014 North American cold wave was an extreme weather event that extended through the late winter months of the 2013 -- 2014 winter season , and was also part of an unusually cold winter affecting parts of Canada and parts of the north-central and upper eastern United States . The event occurred in early 2014 and wa... | |
Eastern_states_of_Australia | The eastern states of Australia are the states adjoining the east coast of Australia . These are the mainland states of Victoria , Queensland , and New South Wales ; the Australian Capital Territory and Jervis Bay Territory , while not states , are also included . The term usually includes the island state of Tasmania ... | |
Dodecanese | The Dodecanese ( -LSB- doʊdɪkəˈniːz -RSB- Δωδεκάνησα , Dodekánisa , -LSB- ðoðeˈkanisa -RSB- , literally `` twelve islands '' ) are a group of 15 larger plus 150 smaller Greek islands in the southeastern Aegean Sea , off the coast of Asia Minor ( Turkey ) , of which 26 are inhabited . Τhis island group generally defines... | |
Dissenting_opinion | A dissenting opinion ( or dissent ) is an opinion in a legal case in certain legal systems written by one or more judges expressing disagreement with the majority opinion of the court which gives rise to its judgment . When not necessarily referring to a legal decision , this can also be referred to as a minority repor... | |
Doublet_earthquake | Seismologists sometimes refer to a pair of similarly sized earthquake shocks that occur relatively closely spaced in time and location as an earthquake `` doublet . '' This is distinct from the normal pattern of earthquake aftershocks . Aftershocks gradually diminish in magnitude and generally come from the same origin... | |
Eastern_United_States | The Eastern United States , commonly referred to as the American East or simply the East , is a region roughly coinciding with the boundaries of the United States established in the 1783 Treaty of Paris , which bounded the new country to the west along the Mississippi River . It is geographically diverse , spanning the... | |
Earth_Changes | The phrase `` Earth Changes '' was coined by the American psychic Edgar Cayce ( 1877-1945 ) to refer to the belief that the world would soon enter on a series of cataclysmic events causing major alterations in human life on the planet . This includes `` natural events '' ( such as major earthquakes , the melting of ... | |
Disease_diffusion_mapping | Disease diffusion occurs when a disease is transmitted to a new location . It implies that a disease spreads , or pours out , from a central source . The idea of showing the spread of disease using a diffusion pattern is relatively modern , compared to earlier methods of mapping disease , which are still used today . A... | |
Discrete_choice | In economics , discrete choice models , or qualitative choice models , describe , explain , and predict choices between two or more discrete alternatives , such as entering or not entering the labor market , or choosing between modes of transport . Such choices contrast with standard consumption models in which the qua... | |
Drought_in_the_United_Kingdom | Droughts are a relatively common feature of the weather in the United Kingdom , with one around every 5 -- 10 years on average . These droughts are usually during the summer , when a blocking high causes hot , dry weather for an extended period . However droughts can vary in their characteristics . All types of drought... | |
Earth_Day | Earth Day is an annual event celebrated on April 22 . Worldwide , various events are held to demonstrate support for environmental protection . First celebrated in 1970 , Earth Day events in more than 193 countries are now coordinated globally by the Earth Day Network . On Earth Day 2016 , the landmark Paris Agreemen... | |
Disease | A disease is a particular abnormal condition , a disorder of a structure or function , that affects part or all of an organism . The study of disease is called pathology which includes the study of cause . Disease is often construed as a medical condition associated with specific symptoms and signs . It may be caused b... | |
Earth_immune_system | The Earth immune system is a controversial proposal , claimed to be a consequence of the Gaia hypothesis . The Gaia hypothesis holds that the entire earth may be considered a single organism ( Gaia ) . As a self-maintaining organism , Earth would have an immune system of some sort in order to maintain its health . So... | |
Ecological_succession | Ecological succession is the process of change in the species structure of an ecological community over time . The time scale can be decades ( for example , after a wildfire ) , or even millions of years after a mass extinction . The community begins with relatively few pioneering plants and animals and develops thro... | |
East_Antarctica | East Antarctica , also called Greater Antarctica , constitutes the majority ( two-thirds ) of the Antarctic continent , lying on the Indian Ocean side of the continent , separated from West Antarctica by the Transantarctic Mountains . It lies almost entirely within the Eastern Hemisphere and its name has been accepted ... | |
East_North_Central_States | The East North Central States form one of the nine geographic divisions within the United States which are officially recognized by the United States Census Bureau . The division contains five states : Illinois , Indiana , Michigan , Ohio , and Wisconsin . It is one of two divisions used to categorize the region of t... | |
Dry_ice | Dry ice , sometimes referred to as `` cardice '' ( chiefly by British chemists ) , is the solid form of carbon dioxide . It is used primarily as a cooling agent . Its advantages include lower temperature than that of water ice and not leaving any residue ( other than incidental frost from moisture in the atmosphere ) .... | |
Earth | Earth ( from Eorðe -LSB- Γαῖα , Gaia -RSB- Terra ) , otherwise known as the World or the Globe , is the third planet from the Sun and the only object in the Universe known to harbor life . It is the densest planet in the Solar System and the largest of the four terrestrial planets . According to radiometric dating an... | |
Diurnal_cycle | A diurnal cycle is any pattern that recurs every 24 hours as a result of one full rotation of the Earth with respect to the Sun . In climatology , the diurnal cycle is one of the most basic forms of climate patterns . The most familiar such pattern is the diurnal temperature variation . Such a cycle may be approximat... | |
EchoStar_XVI | EchoStar XVI is an American geostationary communications satellite which is operated by EchoStar . It is positioned in geostationary orbit , and will be located at a longitude of 61.5 ° West , from where it is intended to provide direct broadcasting of high-definition television services to the United States for Dish N... | |
Dry_Spell | A dry spell is a weather condition | |
East_Coast_of_the_United_States | The East Coast of the United States is the coastline along which the Eastern United States meets the North Atlantic Ocean . This area is also known as the Eastern Seaboard , the Atlantic Coast , and the Atlantic Seaboard . The coastal states that have shoreline on the Atlantic Ocean are , from north to south , Maine , ... | |
EchoStar_XV | EchoStar XV is an American geostationary communications satellite which is operated by EchoStar . It is positioned in geostationary orbit , and will be located at a longitude of 61.5 ° West , from where it is intended to provide direct broadcasting of high-definition television services to the continental United States... | |
Déjà_vu | Déjà vu ( -LSB- deɪʒɑː_ˈvuː -RSB- -LSB- deʒa vy -RSB- ) from French , literally `` already seen '' , is the phenomenon of having the strong sensation that an event or experience currently being experienced has already been experienced in the past . Déjà vu is a feeling of familiarity , and déjà vécu ( the feeling of h... | |
Economy_of_Canada | Canada has the 10th ( nominal ) or 17th-largest ( PPP ) economy in the world ( measured in US dollars at market exchange rates ) , is one of the world 's wealthiest nations , and is a member of the Organization for Economic Co-operation and Development ( OECD ) and Group of Seven ( G7 ) . As with other developed nation... | |
Economic_Policy_(journal) | Economic Policy is a quarterly peer-reviewed academic journal published by Wiley-Blackwell on behalf of the Centre for Economic Policy Research , the Center for Economic Studies ( University of Munich ) , and the Paris School of Economics . The journal was established in 1985 and covers international economic policy to... | |
Economy_of_France | France has the world 's sixth largest economy by nominal figures by IMF estimates for the year 2017 and the tenth largest economy by PPP figures . It has the third-largest economy in Europe with Germany in 1st . The OECD is headquartered in Paris , the nation 's financial capital . The chemical industry is a key sect... | |
Dutch_disease | In economics , the Dutch disease is the apparent causal relationship between the increase in the economic development of a specific sector ( for example natural resources ) and a decline in other sectors ( like the manufacturing sector or agriculture ) . The putative mechanism is that as revenues increase in the growin... | |
Earth_Radiation_Budget_Satellite | The Earth Radiation Budget Satellite ( ERBS ) was a NASA scientific research satellite launched on October 5 , 1984 , to study the Earth radiation budget and stratospheric aerosol and gases . It was carried into low Earth orbit and deployed by the during the STS-41-G mission . The spacecraft was expected to have a two-... | |
Economy_of_Nicaragua | Nicaragua 's economy is focused primarily on the agricultural sector . It is the least developed country in Central America , and the second poorest in the Americas by nominal GDP . In recent years , under the administrations of Daniel Ortega , the Nicaraguan economy has increased dramatically , although it has also be... | |
ESPN_Inc. | ESPN Inc. is an American sports media conglomerate based in Bristol , Connecticut . Jointly owned by The Walt Disney Company and the Hearst Corporation ( which owns a 20 % minority share ) , it owns various sports broadcasting operations , including cable channels ( such as the titular ESPN ) , a sports radio network ,... | |
Earth_in_the_Balance | Earth in the Balance : Ecology and the Human Spirit ( ISBN 0-452-26935-0 , paperback ISBN 1-85383-743-1 ) is a 1992 book written by Al Gore , published in June 1992 , shortly before he was elected Vice President in the 1992 presidential election . Known by the short title Earth in the Balance , the book explains the wo... | |
Ecotoxicity | Ecotoxicity , the subject of study of the field of ecotoxicology ( a portmanteau of Ecology and Toxicology ) refers to the potential for biological , chemical or physical stressors to affect ecosystems . Such stressors might occur in the natural environment at densities , concentrations or levels high enough to disrupt... | |
Distributed_generation | Distributed generation , also distributed energy , on-site generation ( OSG ) or district/decentralized energy is generated or stored by a variety of small , grid-connected devices referred to as distributed energy resources ( DER ) or distributed energy resource systems . Conventional power stations , such as coal-f... | |
Double_taxation | Double taxation is the levying of tax by two or more jurisdictions on the same declared income ( in the case of income taxes ) , asset ( in the case of capital taxes ) , or financial transaction ( in the case of sales taxes ) . Double liability is mitigated in a number of ways , for example : the main taxing jurisdic... | |
Earth_(2007_film) | Earth is a 2007 nature documentary film which depicts the diversity of wild habitats and creatures across the planet . The film begins in the Arctic in January of one year and moves southward , concluding in Antarctica in the December of the same year . Along the way , it features the journeys made by three particular ... | |
Econometrics | Econometrics is the application of statistical methods to economic data and is described as the branch of economics that aims to give empirical content to economic relations . More precisely , it is `` the quantitative analysis of actual economic phenomena based on the concurrent development of theory and observation ,... | |
Drylands | Drylands are defined by a scarcity of water . Drylands are zones where precipitation is balanced by evaporation from surfaces and transpiration by plants ( evapotranspiration ) . UNEP defines drylands as tropical and temperate areas with an aridity index of less than 0.65 . The drylands can be classified into four sub-... | |
Droughts_in_the_United_States | Drought in the United States is similar to that of other portions of the globe . Below normal precipitation leads to drought , which is caused by an above average persistence of high pressure over the drought area . Changes in the track of extratropical cyclones , which can occur during climate cycles such as the El Ni... | |
Dole_effect | The Dole effect , named after Malcolm Dole , describes an inequality in the ratio of the heavy isotope 18O ( a `` standard '' oxygen atom with two additional neutrons ) to the lighter 16O , measured in the atmosphere and seawater . This ratio is usually denoted δ18O . It was noticed in 1935 that air contained more 18... | |
Earth_observation | Earth observation ( EO ) is the gathering of information about planet Earth 's physical , chemical and biological systems via remote sensing technologies supplemented by earth surveying techniques , encompassing the collection , analysis and presentation of data . Earth observation is used to monitor and assess the sta... | |
Earth_analog | An Earth analog ( also referred to as a Twin Earth , Earth Twin , or Earth-like planet , though this latter term may refer to any terrestrial planet ) is a planet or moon with environmental conditions similar to those found on the planet Earth . The possibility is of particular interest to astronomers under reasoning... | |
Eastern_Ontario | Eastern Ontario ( census population 1,603,625 in 2006 ) is a secondary region of Southern Ontario in the Canadian province of Ontario which lies in a wedge-shaped area between the Ottawa River and St. Lawrence River . It shares water boundaries with Quebec to the north and New York State to the east and south , as well... | |
Doomsday_argument | The Doomsday argument ( DA ) is a probabilistic argument that claims to predict the number of future members of the human species given an estimate of the total number of humans born so far . Simply put , it says that supposing that all humans are born in a random order , chances are that any one human is born roughly ... | |
Drift_ice | Drift ice is any sea ice other than fast ice , the latter being attached ( `` fastened '' ) to the shoreline or other fixed objects ( shoals , grounded icebergs , etc. ) . Drift ice is carried along by winds and sea currents , hence its name . When drift ice is driven together into a large single mass ( > 70 % coverage... | |
East_Greenland_Current | The East Greenland Current ( EGC ) is a cold , low salinity current that extends from Fram Strait ( ~ 80N ) to Cape Farewell ( ~ 60N ) . The current is located off the eastern coast of Greenland along the Greenland continental margin . The current cuts through the Nordic Seas ( the Greenland and Norwegian Seas ) and th... | |
Drought_in_Spain | Droughts in Spain mainly happen in the south east . These droughts are usually confined to summer , with hot , dry weather for an extended period . However , droughts can vary in their characteristics . All types of drought cause issues across all sectors , with impacts extending to the ecosystem , agriculture and the ... | |
Eastern_Oregon | Eastern Oregon is the eastern part of the U.S. state of Oregon . It is not an officially recognized geographic entity ; thus , the boundaries of the region vary according to context . It is sometimes understood to include only the eight easternmost counties in the state ; in other contexts , it includes the entire area... | |
Disaster | A disaster is a serious disruption of the functioning of a community or a society involving widespread human , material , economic or environmental loss and impacts , which exceeds the ability of the affected community or society to cope using its own resources . In contemporary academia , disasters are seen as the c... |
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