q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
value | subreddit stringclasses 3
values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
7286qb | why does samsung release a less powerful version of it's phone in the usa then the rest of the world? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7286qb/eli5_why_does_samsung_release_a_less_powerful/ | {
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38,
2
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"text": [
"Some provider in USA use CDMA.\n\nMaybe that's why they use Qualcomm chips or whatever it was. ",
"One of the American carriers (Verizon I think) use a specific cellular band CDMA which the more p... | [] | [] | [
[],
[],
[
"https://www.anandtech.com/show/11540/samsung-galaxy-s8-exynos-versus-snapdragon/6"
]
] | ||
8a6nz4 | Why are the death tolls in events like WWII so wildly different, ranging from 15 million to 85 million. | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8a6nz4/why_are_the_death_tolls_in_events_like_wwii_so/ | {
"a_id": [
"dwwbegl"
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"score": [
12
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"text": [
"Given that you're asking about the Wikipedia article, it seems relevant to point out that Wiki has a [dedicated explanation](_URL_0_) of its own reporting of WW2 mortality. Both in the text of the article and if you look at the page history, it ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/World_War_II_casualties"
]
] | |
26mdyh | why can we give dogs a mosquito repellent pill, but they don't make one for people? | I'm sitting here scratching all over while my dog looks at me like "what's wrong with my human?" | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26mdyh/eli5why_can_we_give_dogs_a_mosquito_repellent/ | {
"a_id": [
"chsdgyy"
],
"score": [
9
],
"text": [
"I'm not aware of any mosquito repellent pills. Are you perhaps thinking of *heartworm* pills? Mosquitoes can transmit heartworm, and it's common to give dogs a pill that will kill the larvae if they become infected. Note that this doesn't actu... | [] | [] | [
[]
] | |
c07fzp | Did the Soviets do all the heavy lifting in Europe during World War 2? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/c07fzp/did_the_soviets_do_all_the_heavy_lifting_in/ | {
"a_id": [
"er2aw7j"
],
"score": [
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"text": [
"There is tons of evidence. The Germans had something like 60% of its divisions in the east facing the Red Army and the remaining covering the rest of western Europe. \n\nThe Russians bore the brunt of the fighting and casualty's throughout the wa... | [] | [] | [
[]
] | ||
5tdtu4 | how is music digitally stored and played? | I've been wondering about this for quite some time now, but can anyone explain it without sounding overly complicated?
There are no musical instruments inside a speaker, so how is it able to play recorded music? And relatedly, how is a recording instrument able to store sounds/music? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5tdtu4/eli5_how_is_music_digitally_stored_and_played/ | {
"a_id": [
"ddm1l3n"
],
"score": [
14
],
"text": [
"Every single sound is just a combination of waves in the air. Instruments and the like are designed to create certain specific combinations, which is why (for example) a trumpet sounds like a trumpet: it vibrates the air in a attern that is (mor... | [] | [] | [
[]
] | |
7tpegb | If we name our pets such as Hercules and Zeus for example, what did the Greeks or Romans call their pets? | Or any other civilization for that matter? What kind of names did they give their domesticated animals? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7tpegb/if_we_name_our_pets_such_as_hercules_and_zeus_for/ | {
"a_id": [
"dtek5v0"
],
"score": [
7
],
"text": [
"Not to discourage other answers, but I really enjoyed /u/Iphikrates' answer on [ancient Greek dog names](_URL_0_)."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5r1eo7/besides_odysseuss_dog_argos_are_there_any_named/dd4706o/?st=jczyobmk&sh=ebf4ec4d"
]
] | |
1akqb2 | the sentencing chantges and controversy to do with the ohio rape case | I mostly don't understand the events and victim shaming happening?
EDIT: charges* | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1akqb2/eli5_the_sentencing_chantges_and_controversy_to/ | {
"a_id": [
"c8yb45x"
],
"score": [
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],
"text": [
"People are angry because the reporting on the case has been focusing on the pain experienced by the men who were just convicted of rape - how it will hurt *their* futures, how going to prison will hurt *them*.\n\nWhat hasn't been spoken of is wha... | [] | [] | [
[]
] | |
3u3izg | why does the company logos after tv shows usually have a funny or absurd saying in them? | I started to wonder this after watching Rick And Morty & Brooklyn Nine-Nine - all these producers/production companies and whatnot that come right after ending credits have the weirdest [quote](_URL_0_) . I'm assuming that this was started by some company and everyone started copying it but to me it's such a weird th... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3u3izg/eli5why_does_the_company_logos_after_tv_shows/ | {
"a_id": [
"cxbjlps"
],
"score": [
5
],
"text": [
"These companies don't get prime placement (at the beginning of the show) By having something quirky, it makes them more memorable.\n\nI find myself saying their slogans in time after my favorite shows on Netflix. It's marketing/branding."
]
} | [] | [
"https://www.youtube.com/watch?v=eOW-uciQvaA"
] | [
[]
] | |
5f2evm | what role do photosynthesis and cellular respiration play in the carbon cycle? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5f2evm/eli5_what_role_do_photosynthesis_and_cellular/ | {
"a_id": [
"dagy9s4",
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"score": [
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2
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"text": [
"Photosynthesis takes carbon dioxide from the air, uses energy from the sun to strip off the oxygen, and uses the carbon to make organic molecules like sugar.\n\nRespiration takes organic molecules like sugar, combines them w... | [] | [] | [
[],
[]
] | ||
4an4tv | why do we invest in space exploration? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4an4tv/eli5_why_do_we_invest_in_space_exploration/ | {
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"score": [
... | [] | [] | [
[],
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"spinoff.nasa.gov",
"https://spinoff.nasa.gov/Spinoff2008/tech_benefits.html#bctop"
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[],
[],
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"http://www.21stcentech.com/money-spent-nasa-waste/"
],
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[],
[],
[],
[],
[],
[],
[]
] | ||
5hgo7p | How successful has Europe and the EU been since the 1970s in creating a distinct sphere of influence, separate from reliance on the US? | The creation of the European Community and subsequent European Union was partially an attempt to consolidate european nations into one entity that wouldn't need to rely entirely on the United States, correct? How successful was that venture?
I know there's a 20 year rule here so we can make the range from the start... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5hgo7p/how_successful_has_europe_and_the_eu_been_since/ | {
"a_id": [
"db11iq2"
],
"score": [
4
],
"text": [
"The entire History of the EU is a history of repeated attempts to remove Europe from over-reliance on the United States. \n\nThe origins of the European integration process are much older than the 1970's. After 1945 the European powers were econo... | [] | [] | [
[]
] | |
dlw7pd | what is the difference between renting and "sharing"? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dlw7pd/eli5_what_is_the_difference_between_renting_and/ | {
"a_id": [
"f4urple",
"f4uvvyo",
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"score": [
3,
3,
2
],
"text": [
"Its more about advertising than a real difference however, i will try to give some examples what some differences could be. \n\nBluesg is also a rental service but they call it ''sharing''. people tend ... | [] | [] | [
[],
[],
[]
] | |
23kz7v | When charging my metal iPod and brushing my fingers lightly against the metal back of it, it feels slightly tacky, almost like my fingertips are buzzing, or gliding over dust. If I unplug it, this goes away. I assume I am completing a tiny circuit somehow, but why does the metal feel different? | From my limited knowledge I think it has to do with capacitance, but what is going on that the metal feels different to our fingertips (almost smoother in a way)?
I am touching the screen and the metal backing only, on the screen I feel nothing and on the sides I feel nothing, but lightly moving my fingertips across ... | askscience | http://www.reddit.com/r/askscience/comments/23kz7v/when_charging_my_metal_ipod_and_brushing_my/ | {
"a_id": [
"cgy394y",
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"cgy6cli",
"cgy705g",
"cgy9sbr"
],
"score": [
134,
11,
27,
11,
7
],
"text": [
"The electric charge is enough to stimulate touch receptors in your finger tips giving the sensation of a \"rougher\" surface. There are different types ... | [] | [] | [
[],
[],
[
"http://imgur.com/J49iYNj"
],
[
"https://en.wikipedia.org/wiki/Ground_loop_(electricity)"
],
[]
] | |
7utmqy | why did audio dvds never become a thing? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7utmqy/eli5_why_did_audio_dvds_never_become_a_thing/ | {
"a_id": [
"dtn15sy",
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"score": [
2,
2
],
"text": [
"By the time DVDs really started getting popular, CDs were becoming far from the only option of storing and transmitting audio. Some companies tried to create devices around a new standard (such as Super Audio CD), but the ... | [] | [] | [
[],
[]
] | ||
3xvo1c | how do snow plows stay on the road when operating in low visibility conditions? | And how do they carve such an accurate path through the snow? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3xvo1c/eli5_how_do_snow_plows_stay_on_the_road_when/ | {
"a_id": [
"cy86xoi",
"cy872wf",
"cy8gyvw"
],
"score": [
3,
2,
2
],
"text": [
"They try their best. They do go off, they do hit curbs, they do get into accidents. Typically, the drivers are well versed in the area, their vehicle, and driving in those conditions.\n\nThe accurate pa... | [] | [] | [
[],
[],
[]
] | |
2joxp5 | why do we still wear warm clothes, like sweatshirts and jeans, and get under large numbers of blankets in the winter even if our homes are a comfortable temperature? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2joxp5/eli5_why_do_we_still_wear_warm_clothes_like/ | {
"a_id": [
"cldthzv"
],
"score": [
3
],
"text": [
"For one, you still spend time outside going to and from work or scooping snow. This cools your body off to a certain degree, and so you get below normal and feel cold even after you've come inside. \n\nPlus, if you've lived in some \"wonderful\" ... | [] | [] | [
[]
] | ||
53hymj | Today, we tend to poke fun at the name "Holy Roman Empire". But would the average German living, let's say in the mid-11th Century before the investiture controversy, have seen their society as the legitimate heir to Rome? | I'm particularly interested in the serfs and burghers, but if there's a different answer for the nobility, I'd love to hear that as well. Did any of them call themselves Roman? Did those of them who were learned enough venerate figures like Caesar and Cicero as their cultural forebearers? How did they feel about the By... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/53hymj/today_we_tend_to_poke_fun_at_the_name_holy_roman/ | {
"a_id": [
"d7td8k4",
"d7tkmp0",
"d7try7j"
],
"score": [
153,
473,
17
],
"text": [
"Can we perhaps expand this question to include the named parties' reactions to Otto I's coronation by the Pope? Did this actually help unify Otto's lands or was it simply seen as adding legitimacy ... | [] | [] | [
[],
[],
[]
] | |
48zkyn | why did large wwii battleships require around 1,000 men to operate? | Could you break it down? Like, it took x amount to do this job, x amount to do that job? I just can't wrap my head around why it took a small city to operate it. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/48zkyn/eli5why_did_large_wwii_battleships_require_around/ | {
"a_id": [
"d0nvygx",
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"score": [
3,
5
],
"text": [
"Not only WWII, but today we have ships that have 5000+ crew. It takes a small city to operate because it's essentially a small city! On top of the crew that is required to operate the guns, missiles, propulsion, sensors, pla... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=0OmOQs0ziSU"
]
] | |
3ie05l | What were the common things to do during a religious festival in ancient Egypt? | If that question is too broad then what was Thoth's festival like? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3ie05l/what_were_the_common_things_to_do_during_a/ | {
"a_id": [
"cufr38g"
],
"score": [
4
],
"text": [
"I think it's important to note up front that in Egypt festivals are acts of religious renewal. They sa them as a means to basically ensure that life keeps going. So early on a festival was simply to perform ritual to maintain life (Bleeker p6). T... | [] | [] | [
[]
] | |
39s7nf | The English language did not used to be as standardized with spelling as it is today. What helped to standardize the spelling of the English language, and was there a movement to push for such standardization? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/39s7nf/the_english_language_did_not_used_to_be_as/ | {
"a_id": [
"cs5z9w2"
],
"score": [
9
],
"text": [
"It's not as standardised as you might think. Spelling varies considerably from country to country, and even within a single country there is variability both regionally and on a person-to-person level. There is no official standard of English in ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Macquarie_Dictionary#History",
"http://www.reddit.com/r/AskHistorians/comments/39s6g2/when_was_shew_replaced_by_show/",
"https://en.wikipedia.org/wiki/SR1"
]
] | ||
gkaor | According to BBC news, stem cells look like a modern panacea, how long before we reap the benefits? | Looking at the BBC recently, stem cell research news is looking incredible:
_URL_0_
Are we using it in practice yet? If not, when? (non scientist here) | askscience | http://www.reddit.com/r/askscience/comments/gkaor/according_to_bbc_news_stem_cells_look_like_a/ | {
"a_id": [
"c1o7iur"
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"score": [
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"text": [
"Stem cells are being used all the time. If you want a more 'basic' view of them, go to _URL_0_ and search for stem cells. You will definitely find some cool articles that are written in a hybrid format between basic science background and profe... | [] | [
"http://www.bbc.co.uk/search/news/?q=stem%20cells"
] | [
[
"www.newscientist.com"
]
] | |
ayv9lx | i don't really understand how squaring numbers and square roots relate to the real world. | I have a hard time visualizing how it's used. So as an example, I understand how π relates to the surface of a circle. It just happens to be a ratio that relates to diameter. I can see how that is useful and funtional. I can see how Fibonacci manifests in nature and how the numbers can build on each other. I can see ho... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ayv9lx/eli5_i_dont_really_understand_how_squaring/ | {
"a_id": [
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"score": [
3,
19,
4,
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],
"text": [
"Well, the inverse square law is a good representation on how exponents exist in the real\nworld. The inverse square law can be used to describe how light spreads from its origin. ... | [] | [] | [
[],
[],
[],
[]
] | |
3gbhac | Do we have any reason to believe that the story of Vasily Zaitsev is true at all? | It's well established that Stalinist Russia manufactured or changed history to suit its "greater good." What evidence is there to believe that any of the story is true at all? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3gbhac/do_we_have_any_reason_to_believe_that_the_story/ | {
"a_id": [
"ctx1x0y"
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"score": [
10
],
"text": [
"The idea that he is completely fictional is ludicrous. [Here's an interview with him in which he clearly exists.](_URL_0_) Unless you believe the battle of Stalingrad and World War II also never happened, there is no reason to believe that Vas... | [] | [] | [
[
"https://www.youtube.com/watch?v=692xwcADYdw"
]
] | |
1a0g6q | Why aren't planets/moons closer to the sun than Mercury is? | I have to admit, it would be something new to me if there were some planets or objects closer to the sun. But my question is if it is due to gravitanial pull being so much that objects are pulled into the sun or if everying closer to the sun than a certain distance will turn to dust due to the heat. | askscience | http://www.reddit.com/r/askscience/comments/1a0g6q/why_arent_planetsmoons_closer_to_the_sun_than/ | {
"a_id": [
"c8syaqm",
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"score": [
4,
7
],
"text": [
"Nothing. We've found planetary systems which have [planets larger than Jupiter orbiting closer than Mercury](_URL_0_).",
"There are plenty of other solar systems that have Earth-sized planets that are closer to their sun... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Hot_Jupiter"
],
[]
] | |
o2935 | How were the flat topped mountains near the Nazca lines formed. | I have a friend who watches too much History channel. We had a discussion about the possibility that aliens visited ancient people. I dismissed it as non-sense and was able to explain why a lot of the "evidence" was just silly. He pointed to the mountains near Nazca in Peru, though, and I wasn't able to give a good ... | askscience | http://www.reddit.com/r/askscience/comments/o2935/how_were_the_flat_topped_mountains_near_the_nazca/ | {
"a_id": [
"c3dtak8",
"c3dtg71"
],
"score": [
2,
2
],
"text": [
"Is [this](_URL_0_) what you're referring to? It's a poor picture but I don't see anything to indicate that it is artificially flat-topped. It looks more like a rectangular shape on top of a naturally relatively flat top.",
... | [] | [
"http://imgur.com/a/JrpNc#0"
] | [
[
"http://reporteroo.info/nazca_lines.htm"
],
[]
] | |
ad6m5p | Why do Jupiter's moons never colide? | I mean, shouldn't the gravitational force between each other be enough to attract themselves when they pass by? | askscience | https://www.reddit.com/r/askscience/comments/ad6m5p/why_do_jupiters_moons_never_colide/ | {
"a_id": [
"edfzerp"
],
"score": [
13
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"text": [
"Systems of moons like those of Jupiter tend to settle into stable orbital resonances, so their effects on each other ballance out over time.\n\nBut these resonances can be weird sometimes. The strangest I'm aware of are Janus and Epimethius (tec... | [] | [] | [
[]
] | |
kl2zx | Would it be possible to drill to the earths core? Just for shits? | Just curious.
Edit: thanks everyone I now understand it would be impossible. | askscience | http://www.reddit.com/r/askscience/comments/kl2zx/would_it_be_possible_to_drill_to_the_earths_core/ | {
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"score": [
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7,
3,
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3
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"text": [
"If you mean the center core full of molten nickel and iron, then no. Past the Earth's crust is molten lava, which would most likely mel... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Kola_Superdeep_Borehole"
],
[
"http://news.nationalgeographic.com/news/2011/03/110323-earth-mantle-drill-sample-first-science-nature-teagle/"
],
[],
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"http://en.wikipedia.org/wiki/Kola_Superdeep_Borehole"
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"http://news.nationalgeographic.com/n... | |
1t55uv | when websites that illegally stream movies can easily be found on google, why are they not immediately shut down for copyright violations? | Why are websites that offer free movie streaming, like PutLocker, not shut down by authorities for violating copyright laws? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1t55uv/eli5_when_websites_that_illegally_stream_movies/ | {
"a_id": [
"ce4fezw",
"ce4ffrg"
],
"score": [
3,
5
],
"text": [
"_URL_0_ is hosted in Tonga and it's difficult for a US company to get a foreign host to shut down a site.",
"Laws in one country don't apply in another country"
]
} | [] | [] | [
[
"Putlocker.to"
],
[]
] | |
2bped5 | why cant we choose what are tax money is used for? | As far as I understand it, taxes are a way for government to make its money and then is supposed to use that money for the betterment of a nation. but why can we (the tax payers) choose what are money is used for rather than blindly giving it to the government so they can do what they want with it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2bped5/eli5_why_cant_we_choose_what_are_tax_money_is/ | {
"a_id": [
"cj7kpzo"
],
"score": [
3
],
"text": [
"1. Because the particular type of democracy practiced by most countries is not direct democracy. You don't get to vote on whether or not your tax dollars are used to buy a tank or buy a new public bus, you vote in a representative that you hope w... | [] | [] | [
[]
] | |
60djzk | why do we feel like we have no emotion when we're depressed? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/60djzk/eli5_why_do_we_feel_like_we_have_no_emotion_when/ | {
"a_id": [
"df5kb8o"
],
"score": [
2
],
"text": [
"A lot of times a person can \"go numb\" because they haven't developed proper coping mechanisms to help handle their emotions. By going numb they are able to avoid the pain while also avoiding the problem. Trust me though, numb is far worse than ... | [] | [] | [
[]
] | ||
35ue4p | why do americans hate "socialism" when aspects of it have led to other developed nations becoming much more prosperous? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35ue4p/eli5_why_do_americans_hate_socialism_when_aspects/ | {
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[],
[
"http://data.worldbank.org/indicator/NY.GDP.PCAP.CD"
],
[],
[],
[],
[],
[
"http://www.independent.co... | ||
8wv6gw | why can the tv get signal more easily and more reliably while internet can hardly upload/download stuff in comparison? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8wv6gw/eli5why_can_the_tv_get_signal_more_easily_and/ | {
"a_id": [
"e1ymoo0",
"e1ymzss"
],
"score": [
16,
5
],
"text": [
" > Why is TV so much powerful on getting data compared to the internet?\n\nTelevision is one-way while the internet is communication in both directions. It is like the difference between using a loudspeaker to communicate ... | [] | [] | [
[],
[]
] | ||
5yeg95 | Was maille or plate armor effective against gunpowder weapons? | I understand the new take on warfare was mass mobilization of cheap troops and it pushed out expensive armors for the common troop but did it still work?
Would maille or plate be effective against modern(20 years ago, of course) weapons? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5yeg95/was_maille_or_plate_armor_effective_against/ | {
"a_id": [
"dephl4c"
],
"score": [
2
],
"text": [
"This has been answered a couple times before - see especially u/WARitter's comments in [How Effective Was Plate Armor Against Musketballs](_URL_0_), [Would A 17th Century Breastplate Have Stopped A Pistol/Musketball?](_URL_5_), and [Advances in (... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5udybq/how_effective_was_plate_armor_against_musketballs/",
"https://www.reddit.com/r/AskHistorians/comments/5u85fp/how_effective_were_napoleonic_cuirass_at/",
"https://www.reddit.com/r/AskHistorians/comments/1imbqe/was_thick_bulletproof_metal_armor_lik... | |
2qbzjc | why isn't paypal regulated like a bank? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2qbzjc/eli5_why_isnt_paypal_regulated_like_a_bank/ | {
"a_id": [
"cn4pptx",
"cn4pqrn",
"cn4ryr5"
],
"score": [
9,
5,
2
],
"text": [
"Paypal must follow FINCEN regulations just as any other money changer does.\n\n_URL_0_",
"It does not actually hold funds, and when it does that money is not directly passed to you (i.e. you can't \... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Financial_Crimes_Enforcement_Network"
],
[],
[]
] | ||
4euvz8 | when a woman has a prolonged period/irregular bleeding for several weeks or longer, how does she not "run out of" uterine lining? | I'm female, but I've never understood this. To my understanding, the bleeding during your period is the shedding of uterine lining, right? It makes sense that you'd build up enough lining over three weeks to shed it during the fourth week. But for those of us who have irregular periods that sometimes last a *full month... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4euvz8/eli5_when_a_woman_has_a_prolonged_periodirregular/ | {
"a_id": [
"d23p28c"
],
"score": [
3
],
"text": [
"Generally if you're bleeding for very long periods of time, there is a constant building up and sloughing off of the uterine lining. It's likely not as heavy as a regular period is, either."
]
} | [] | [] | [
[]
] | |
tof1n | My grandpa served in the 7th Army Air Corp in WWII, Pacific engineers. My 88 year old grandma wants to know more about what he did. |
Info is sparse. Partially due to what he saw, friends being killed daily, women and children jumping off cliffs (saipan), sharp decline of his workaholic body, and a long battle with clinical depression, he put a shotgun in his mouth at 82. I want to be able to present something to my grama to help explain what he wen... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/tof1n/my_grandpa_served_in_the_7th_army_air_corp_in/ | {
"a_id": [
"c4ohoov"
],
"score": [
2
],
"text": [
"[Take a look at this](_URL_0_). It is a declassified Air Force history of the 7ths operational history in the second half of its WWII Pacific campaign. If you want your Grandfather's personal service records...its a mixed bag, a lot were destroye... | [] | [] | [
[
"http://www.afhra.af.mil/shared/media/document/AFD-090602-087.pdf",
"http://www.armyairforces.com/ResearchHelp.aspx"
]
] | |
7kpya4 | Did Native Americans have any interaction with dinosaur fossils? | Just finished watching a documentary on dinosaur fossils in the West. Was wondering if any Native Americans found traces of them. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7kpya4/did_native_americans_have_any_interaction_with/ | {
"a_id": [
"drgre2h",
"dri6bd0"
],
"score": [
2807,
9
],
"text": [
"This is my general notice that \"Native American\" encompasses two vast continents filled with innumerable people in the various landscapes of those continents, whose thoughts, traditions, and cultures were not static, bu... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Paleontological_Museum_in_Tocuila",
"https://en.wikipedia.org/wiki/Emic_and_etic",
"http://www.famsi.org/research/loubat/Vaticanus%203738/page_08v.jpg",
"http://www.inah.gob.mx/en/32-museums/4868-tepexpan-prehistoric-museum"
],
[]
] | |
7loxm3 | why does gas mileage take a nose dive during cold temperature? is there an agreed upon temp where warming up the car is required? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7loxm3/eli5why_does_gas_mileage_take_a_nose_dive_during/ | {
"a_id": [
"drntelb",
"drntr1a"
],
"score": [
2,
2
],
"text": [
"Due to the oil and other fluids getting goopy in the cold.\n\nYer not alone in askin', and kind strangers have explained:\n\n1. [ELI5: Why do cars have significantly worse gas mileage when it's cold? ](_URL_1_) ^(_16 comment... | [] | [] | [
[
"https://www.reddit.com/r/explainlikeimfive/comments/2koaya/eli5_how_does_the_changing_temperature_outside/",
"https://www.reddit.com/r/explainlikeimfive/comments/5m9dxx/eli5_why_do_cars_have_significantly_worse_gas/"
],
[]
] | ||
5h4c4t | Are there any living organisms that don't share their evolutionary tree with any other organism? | As an example;
Bacteria and humans went down very different evolutionary paths, but did they stem from a very early ancestor, or did humans come from one single celled organism and archaea came from a totally different cell?
Also is this the case only at the very early stages of evolution? Or are there other random o... | askscience | https://www.reddit.com/r/askscience/comments/5h4c4t/are_there_any_living_organisms_that_dont_share/ | {
"a_id": [
"day3fux",
"day441e",
"daypm0h"
],
"score": [
13,
5,
2
],
"text": [
"This has been asked many times before. A single [common](_URL_0_) ancestor for all life is by far the most likely scenario. ",
"Well every living thing is thought to have arisen from a universal c... | [] | [] | [
[
"https://www.reddit.com/r/askscience/comments/30dz5l/has_the_study_of_modern_genetics_proven_the/"
],
[],
[]
] | |
2vyqod | Did the Western Allies ever develop something similar to the Blitzkrieg "doctrine" or the Soviet Deep Operations doctrine? | Both the Wehrmacht and the Red Army focused heavily on movement in depth on the operational level, especially in offensive operations, and envelopments of entire armies and fronts were common on the Eastern Front. However, I haven't heard of any large envelopent operation being conducted by the Western Allies in Europe... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2vyqod/did_the_western_allies_ever_develop_something/ | {
"a_id": [
"comczo9",
"comgdot"
],
"score": [
8,
3
],
"text": [
"There were at least two major encirclement-type operations by the Allies in western Europe; the Falaise Pocket during the breakout from Normandy, and the Ruhr pocket after crossing the Rhein (the first *mostly* successful, t... | [] | [] | [
[],
[]
] | |
37392v | why does the dmv collect organ donor information and not family practitioners? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/37392v/eli5_why_does_the_dmv_collect_organ_donor/ | {
"a_id": [
"crjatjs",
"crjbfu9"
],
"score": [
8,
3
],
"text": [
"There is a very short window of time in which organs are vital for transplant following a life-threatening accident. It is much easier to be able to identify someone's organ donor status by looking at their driver's license ... | [] | [] | [
[],
[]
] | ||
vh80b | What are the theories about the transition of inorganic compounds to life? | I have always wanted to explore the question a bit deeper than usual. The only theory I am aware of is based on the Miller-Urey experiment and this raises another question - to what extent is the experiment valid evidence to support the theory about the origin of life? | askscience | http://www.reddit.com/r/askscience/comments/vh80b/what_are_the_theories_about_the_transition_of/ | {
"a_id": [
"c54gzzs",
"c54i3wo"
],
"score": [
8,
13
],
"text": [
"There's a reasonable overview in the wikipedia article on abiogenesis.\n",
"I'm not qualified to answer but do feel compelled to point out that you may be using the term \"inorganic\" inappropriately. \"Organic\" means ... | [] | [] | [
[],
[]
] | |
36qdge | Is there a difference between modern tobacco and tobacco from 1770's America? | Not sure if this belongs here or ask science, but was the tobacco grown in colonial America the same as the tobacco we grow now or have we altered it in 240 years? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/36qdge/is_there_a_difference_between_modern_tobacco_and/ | {
"a_id": [
"crg72s3"
],
"score": [
10
],
"text": [
"The only Pre-European tobacco that grew east of the Missouri River was Nicotiana Rustica (a.k.a Yellow Henbane). N. Rustica has an average nicotine content of 9% compared to 1-3% of N. tabacum (most commonly smoked modern tobacco). This would ha... | [] | [] | [
[]
] | |
nmxbw | Why isn't there gaps in light when seen from huge distances across space? | If light is a photon that has particle and wave like properties, why wouldnt there be huge gaps of space between the photons that stars emit? As you get farther from a star, I feel like the gaps would grow huge enough between photons that the earth would slip between the majority of them (billions of light years away).... | askscience | http://www.reddit.com/r/askscience/comments/nmxbw/why_isnt_there_gaps_in_light_when_seen_from_huge/ | {
"a_id": [
"c3ac5mu",
"c3ac8da",
"c3ac5mu",
"c3ac8da"
],
"score": [
3,
2,
3,
2
],
"text": [
"When observing very faint sources in higher ends of the spectrum you can sometimes only detect one photon at a time.",
"You are quite correct that this will happen. The stars (... | [] | [] | [
[],
[],
[],
[]
] | |
5tzwzc | In Nazi Germany, what would be a normal day for a German teenager who is a part of Hitler Youth? | did they attend Hitler Youth every day? any idea on what times of day they would be doing Hitler Youth activities? thanks in advance | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5tzwzc/in_nazi_germany_what_would_be_a_normal_day_for_a/ | {
"a_id": [
"ddqsy38"
],
"score": [
4
],
"text": [
"Perhaps you might also be interested in the book \"German Youth in a Changing World\" - by several authors, it was published by the Terramare Office in 1936, and fleshes out several aspects of the ideal youth. Reading between the lines, it seems ... | [] | [] | [
[]
] | |
1r7s1j | Why did the Eurasian nomads stay nomads? | There were tons of Eurasian nomad groups with ranges from Bulgaria to China and India, right? Each group had very distinct culture, their own languages, and they were fairly technologically advanced, and some even had cities. Why were they so focused on being nomadic, when the land they roamed was largely arable? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1r7s1j/why_did_the_eurasian_nomads_stay_nomads/ | {
"a_id": [
"cdkij8t"
],
"score": [
9
],
"text": [
"Steppe land was not particularly arable. Mountain barriers and sheer distance from large bodies of water reduce the humidity, and the soil is generally quite poor. Seasons are extreme, with *very* cold winters and hot summers. With no windbreaks,... | [] | [] | [
[]
] | |
1zhdq0 | the differences between the ussr, the soviet union, and russia. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1zhdq0/eli5_the_differences_between_the_ussr_the_soviet/ | {
"a_id": [
"cftnx7h",
"cftpgrv"
],
"score": [
4,
6
],
"text": [
"Russia was a state of the USSR. The USSR was also known as the Soviet Union.\n\nThe Soviet Union came into existence in the early 1920s after the communists won the civil war in Russia. A number of other states also joined,... | [] | [] | [
[],
[]
] | ||
4yrlqj | How did North Vietnam, the USSR, PRC and other communist powers react at the time when details of the My Lai Massacre became public? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4yrlqj/how_did_north_vietnam_the_ussr_prc_and_other/ | {
"a_id": [
"d6q2lf9"
],
"score": [
4
],
"text": [
"It's about what you would expect. The North Vietnamese government used the incident as propaganda, especially abroad, in their effort to delegitimize the American role in the war and the South Vietnamese government. It was used domestically as we... | [] | [] | [
[]
] | ||
r2rvb | How far would a bullet have to travel for it to be affected by the Coriolis effect? | Say you fire a bullet due north or due south. For simplicity, we'll say that we're at the equator. How far would the bullet have to travel for the Coriolis effect to become an important factor in it's ground-relative trajectory?
*My friends and I were having an argument about this. I said that it doesn't have enough m... | askscience | http://www.reddit.com/r/askscience/comments/r2rvb/how_far_would_a_bullet_have_to_travel_for_it_to/ | {
"a_id": [
"c42g8eb",
"c42gsu0",
"c42gu5y",
"c42guos",
"c42gvuk"
],
"score": [
6,
9,
5,
2,
3
],
"text": [
"What is your threshold for defining something as being \"affected\"? Your answer depends entirely on that.",
"Not a scientific answer, but when I was a sc... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Rossby_number"
],
[],
[
"http://en.wikipedia.org/wiki/Coriolis_effect#Formula",
"http://en.wikipedia.org/wiki/Orders_of_magnitude_\\(speed\\)"
]
] | |
430q6c | how do homeless people register to vote, get a drivers license, or fill out forms that require an address? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/430q6c/eli5_how_do_homeless_people_register_to_vote_get/ | {
"a_id": [
"czek1vb",
"czekyjp",
"czeptki"
],
"score": [
6,
3,
2
],
"text": [
"Just because they are homeless doesn't mean they don't have a mailing address. Many charities will receive mail for the homeless. They may also use a PO box, shelter, church, or family/friend's as their... | [] | [] | [
[],
[],
[]
] | ||
c5ugvl | Why was Japan so sought-after as a trading partner by European countries? As an island nation with few natural resources, what Japanese goods were in demand by the West? | I'm speaking generally of isolationist Japan, around and before its opening by the Perry Expedition. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/c5ugvl/why_was_japan_so_soughtafter_as_a_trading_partner/ | {
"a_id": [
"es4m6e7"
],
"score": [
19
],
"text": [
"Hi, u/DrHENCHMAN,\n\nYou may be interested in this post, \"[Why did USA give Japan an ultimatum to \"open\" their economy? - Why was trade with Japan so important to USA that they were willing to go to war with them over it](_URL_0_)\" with an a... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/8i5ci9/why_did_usa_give_japan_an_ultimatum_to_open_their/",
"https://www.reddit.com/r/AskHistorians/comments/1nku4q/why_did_the_united_states_want_to_open_trade_with/"
]
] | |
2lqioe | using public dns vs my default isp dns | My internet connection has been wonky lately and I came to the conclusion that it was due to my DNS settings. I googled around a bit (with my smartphone) and I found a feature that is built into my router to use a preset DNS instead of my default ISP DNS. In my case I decided to use Google's public DNS and lo and behol... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2lqioe/eli5_using_public_dns_vs_my_default_isp_dns/ | {
"a_id": [
"clx7pcl"
],
"score": [
6
],
"text": [
"A DNS is basically a phonebook for your computer. When you type in _URL_0_ a DNS server needs to look up the actual IP address so it can direct you to it. \n\nThe main reason people use different DNS servers is for speed. Since you can't do anyth... | [] | [] | [
[
"reddit.com",
"https://developers.google.com/speed/public-dns/docs/security"
]
] | |
crqdul | what is the difference between astronomers and astrophysicists? | I always see them mentioned together, but what exactly is the difference? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/crqdul/eli5_what_is_the_difference_between_astronomers/ | {
"a_id": [
"ex8o5mo"
],
"score": [
5
],
"text": [
"Astronomers observe the \"heavens\", ie the sky and catalogue it, whereas astrophysicists theorize and calculate about how that stuff moves, using math to figure out why it looks the way it does. \n\nPut simply, astronomers are nerds with cameras... | [] | [] | [
[]
] | |
1wehu1 | why is it advisable to get a tetanus shot after receiving a cut/puncture/burn, when it takes time for antibodies to build up? | Tetanus can incubate as quickly as 3 days. Is your body able to produce antibodies that quickly after a tetanus booster shot? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1wehu1/eli5_why_is_it_advisable_to_get_a_tetanus_shot/ | {
"a_id": [
"cf18hvf",
"cf18p08",
"cf18paj"
],
"score": [
2,
2,
2
],
"text": [
"For a person who has been vaccinated previously the shot is recommended for up to 7 days after would formation. The shot is recommended to be given for up to 21 days after the wound has occurred for a p... | [] | [] | [
[],
[],
[]
] | |
dl2zp8 | How come there are so many sanmarinese in Argentina? | So after visiting the microstate of San Marino this summer I decided to read up a bit on the country and it's people (fancily titled Italians /s). When I checked the page for [Sanmarinese people](_URL_0_) on Wikipedia I noticed a section of their diaspora was included. Now, there are basically just about 50k people of ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dl2zp8/how_come_there_are_so_many_sanmarinese_in/ | {
"a_id": [
"f4md7ke"
],
"score": [
9
],
"text": [
"I think you might be missing that over 60% of Argentina's population (some 27 million) has at least some Italian ancestry. Against today's population of 60 million Italians in Italy. So if there are 1.5k Argentines of Sammarinese descent out of a... | [] | [
"https://en.wikipedia.org/wiki/Sammarinese"
] | [
[]
] | |
6g6mna | fat contains 9 calories/gram. how does a 3500 calorie deficit in a week result in a 0.5kg weight loss then? (if you do the math, it should be approx. 0.39kg) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6g6mna/eli5_fat_contains_9_caloriesgram_how_does_a_3500/ | {
"a_id": [
"dinxgs2"
],
"score": [
2
],
"text": [
"First, your figures are incorrect. There are 7.7 calories in a gram of body fat, not 9. And that means 3850 calories per 0.5 kg. \n\nSecond, it's not that simple; this trivial math was pointed out over 50 years ago but it doesn't work that way in... | [] | [] | [
[
"http://www.todaysdietitian.com/newarchives/111114p36.shtml"
]
] | ||
60a59i | is there a reason why some people with tourettes have swear words specifically as their tick? of all words that could be their tick, why is it almost always profanity? | Note: I am fully aware not all people with Tourettes have this tick, it's just the most famous kind of Tourettes and I wonder why. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/60a59i/eli5_is_there_a_reason_why_some_people_with/ | {
"a_id": [
"df4xjd4",
"df4xo57",
"df4zmxe",
"df4zpt6",
"df4zyp0",
"df500sa",
"df52rl8",
"df547cd",
"df5481r",
"df55nwe",
"df55s9d",
"df585q4",
"df5m806"
],
"score": [
21,
60,
38,
4,
51,
2,
2,
7,
146,
5,
5,
3,
... | [] | [] | [
[],
[],
[],
[],
[
"tourette.org",
"https://www.tourette.org/about-tourette/overview/what-is-tourette/",
"https://www.tourette.org/resource/understanding-coprolalia",
"https://www.tourette.org/resource/understanding-coprolalia/"
],
[],
[],
[],
[],
[],
[],
[],
[]
] | |
8nkbjw | President Ford's pardoning of Nixon | I know that I've been taught all my life that Ford's decision was about healing the country, but what do we know about his *actual* motivations?
Secondly, how much did pardoning Nixon figure into Ford losing his bid for re-election? I heard this morning that it was arguably the single most decisive factor, but I've... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8nkbjw/president_fords_pardoning_of_nixon/ | {
"a_id": [
"dzw82ms"
],
"score": [
3
],
"text": [
"[This](_URL_0_) answer by /u/dhpye is related to your question, although it focuses more on the larger implications and repercussions of the pardon rather than Ford's motivations at the time."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/12q2iz/why_was_richard_nixon_pardoned/c6xfk1w/"
]
] | |
1hee3g | What is the deepest that we've dug into other planets/moons? | askscience | http://www.reddit.com/r/askscience/comments/1hee3g/what_is_the_deepest_that_weve_dug_into_other/ | {
"a_id": [
"catzs8b"
],
"score": [
6
],
"text": [
"We've literally only scratched the surfaces of the planets and moons we've landed on (Venus, the Moon, Mars, and Titan), digging not much more than a meter (if that). There was, however, a mission which [slammed a mass into the comet 9P/Tempel](_... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Deep_Impact_(spacecraft\\)"
]
] | ||
1i5mbo | What caused Julian the Apostate to convert from Christianity --- > Paganism? And were his religious policies (primarily) motivated by his love for the Gods or his hatred for Christians? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1i5mbo/what_caused_julian_the_apostate_to_convert_from/ | {
"a_id": [
"cb1ai6w",
"cb1l5w7"
],
"score": [
9,
3
],
"text": [
"Julian's persecution of the Christians was not nearly as brutal as many of his predecessors. His main act of persecution was largely to remove the Christians from education. He officially instituted tolerance and reversed pu... | [] | [] | [
[],
[]
] | ||
bzrl12 | in a given location, is relative cloud cover a product of temperature, a symptom, or completely independent? | Assuming the same location (a place that isn’t always hot/cold), same season (lets say between spring-summer), and no abnormal weather conditions (such as a fire that blankets half a country in smog). | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bzrl12/eli5_in_a_given_location_is_relative_cloud_cover/ | {
"a_id": [
"eqw26rk"
],
"score": [
2
],
"text": [
"Trees have to regulate their temperatures just like other living things, and one way they stay cool is by allowing some of their stored water to evaporate, a little like how humans sweat. That can form clouds over forested areas.\n\n & #x200B;\n... | [] | [] | [
[]
] | |
7yhg9y | what is a private school and why do they receive government support? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7yhg9y/eli5_what_is_a_private_school_and_why_do_they/ | {
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"A private school in the US is a school that does not receive government support (or if they do have some have very little). They are not open to the public and admittance is not automatic. A potential student must apply (and often test) to get in... | [] | [] | [
[]
] | ||
drah3i | How did the British keep the fact that they broke the Enigma code secret? | What statistical formula's did the British and Allied forces use, if any, to decide to take action based on the German deciphered information?
This might get into game theory or statistics, but how could they be sure that the Germans would not 'get wise' and switch their code? How often could they change their behavio... | askscience | https://www.reddit.com/r/askscience/comments/drah3i/how_did_the_british_keep_the_fact_that_they_broke/ | {
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[],
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"https://www.telegraph.co.uk/cult... | |
31uisx | If a flight takes longer than 12 hours, aren't they just flying the wrong way around the earth so the earth's rotation speeds it up? | Or does the entire atmosphere rotate with the earth? | askscience | http://www.reddit.com/r/askscience/comments/31uisx/if_a_flight_takes_longer_than_12_hours_arent_they/ | {
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"The atmosphere rotates with the Earth, otherwise it would be very windy indeed. At equator it would be something like 15 times hurricane speeds!\n\nEven ... | [] | [] | [
[],
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14mieh | US History: Why are politicians so keen to 'leave matters up to the states' on certain issues but not others? | I know that the US Constitution and our 200+ years is very much a story about Federalism. I feel like in the present day, there are a few big issues where the rights and responsibilities of states vs. the federal government plays a major role. Things that pop to mind are Gay Marriage/DOMA, Immigration, & Healthcare... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/14mieh/us_history_why_are_politicians_so_keen_to_leave/ | {
"a_id": [
"c7efmnk",
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"score": [
6,
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"text": [
"Just a pre-emptive warning: the question is \"where **in history** do we see issues like this either being 'Federalized' or punted to the states?\"\n\nLet's leave current politics out of it, please. ",
"The truth is that... | [] | [] | [
[],
[]
] | |
3rw3cq | why no medicine or treatment has been developed to cure common cold, sore throat instantly? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3rw3cq/eli5_why_no_medicine_or_treatment_has_been/ | {
"a_id": [
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"text": [
"Colds are caused by a virus. Viruses aren't alive, so our medicines can't kill them. We have antiviral drugs, but they only work on specific viruses by targeting unique chemicals on their protein shells, and each kind of vir... | [] | [] | [
[],
[]
] | ||
6tauj5 | Products, such as glue, that are purple but disappear/turn clear--how do they work? | I've seen several products, including glue, sunscreen, and fabric marking pens, that start out purple, but become invisible as the product dries, is rubbed in, or after some period of time.
How does this disappearing purple effect work? Do all these products use the same compounds or mechanism to produce this effect? ... | askscience | https://www.reddit.com/r/askscience/comments/6tauj5/products_such_as_glue_that_are_purple_but/ | {
"a_id": [
"dljqobo"
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"score": [
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"I don't know for sure, but it's almost certainly solvatochromism: _URL_0_\n\nBriefly, the color of something can depend on the environment, particularly the polarity of the solvent. When the solvent evaporates, the environment changes and so doe... | [] | [] | [
[
"https://en.m.wikipedia.org/wiki/Solvatochromism"
]
] | |
1wwijh | why is atomic bomb testing in the ocean allowed? | Surely the Atom Bomb leaves radiation and wont the pollute the water and kill millions of life forms? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1wwijh/eli5_why_is_atomic_bomb_testing_in_the_ocean/ | {
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"The ocean is *really really really really god-damn BIG*. \n\nIt would take quite a blast to cause a noticeable difference on anything larger than a local scale.\n\nA-Bombs aren't great for life, you ar... | [] | [] | [
[],
[],
[]
] | |
918smt | What are the limits of gravitational slingshot acceleration? | If I have a spaceship with no humans aboard, is there a theoretical maximum speed that I could eventually get to by slingshotting around one star to the next? Does slingshotting "stop working" when you get to a certain speed? Or could one theoretically get to a reasonable fraction of the speed of light? | askscience | https://www.reddit.com/r/askscience/comments/918smt/what_are_the_limits_of_gravitational_slingshot/ | {
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"TL;DR: The faster you... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[
"https://youtu.be/ulCdoCfw-bY"
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"https://en.wikipedia.org/wiki/Gravity_assist",
"https://www.youtube.com/watch?v=rl1gtC6kuPg",
"https://en.wikipedia.org/wiki/Free-return\\_trajectory",
... | |
2rpop8 | why is everything cheaper in the us than in central eastern european countries? | I always wondered why there is so much difference in prices and salaries between the US and Hungary, Romania, Greece, etc. Romanians have a minimum wage of cc $230, electronics cost almost twice as much, food has the same price as in the US, clothing is much cheaper in the US(e.g. the same t shirt from U.S Polo is $60 ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2rpop8/eli5_why_is_everything_cheaper_in_the_us_than_in/ | {
"a_id": [
"cni5p7e"
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"text": [
"There's really no blanket answer for this question, because the economy is vastly intricate-- as a result, I'll answer these questions separately. \n\nImports from country to country, especially if they're on different continents, tend to be extr... | [] | [] | [
[
"http://www.numbeo.com/cost-of-living/compare_countries_result.jsp?country1=Romania&country2=United+States"
]
] | |
1cza12 | In Greco-Roman and Persian culture (say 1st-4th centuries CE) what were crowns like? | What kinds were there? Who could wear them? On what occasions? How did they function? Would there be contexts in which women or queens wore them?
I have only two images in my head: the King Richard type worn by kings: gold, bejeweled, with all sorts of shiny things, perhaps a diadem; and the crown of victorious athe... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1cza12/in_grecoroman_and_persian_culture_say_1st4th/ | {
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"In \"On the Crown\" Demosthenes reads various decrees from cities gifting crowns to distinguished citizens; I saw one editor gloss the weights mentioned in these decrees as around 360 drams, which means either about 60 ounce... | [] | [] | [
[],
[
"http://i.imgur.com/v0AQEdB.jpg",
"http://i.imgur.com/uaqwGWL.jpg",
"http://i.imgur.com/eqeSjbH.jpg",
"http://i.imgur.com/njCeCGW.jpg",
"http://i.imgur.com/lqwlcoZ.jpg",
"http://i.imgur.com/Vw71ne5.jpg",
"http://i.imgur.com/1wglVmd.jpg",
"http://i.imgur.com/EjNev1B.jpg",
... | |
eykida | Why is our clothing become more simple over time? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/eykida/why_is_our_clothing_become_more_simple_over_time/ | {
"a_id": [
"fghraj0"
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"score": [
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"text": [
"You might be interested in these answers to previous questions:\n\n* [When did the suit (something resembling current pants + jacket + nice shoes + tie/vest/hat/etc) become the standard formal wear and why?](_URL_1_) by /u/chocolatepot\n\nand \n\... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/1k7vs9/did_men_really_dress_as_well_as_portrayed_in/cbmeq48/",
"https://www.reddit.com/r/AskHistorians/comments/6cn1gb/when_did_the_suit_something_resembling_current/dhw0d3w/"
]
] | ||
29ooqs | were our teeth naturally supposed to be yellow? and is it actually healthy for them to be white? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/29ooqs/eli5_were_our_teeth_naturally_supposed_to_be/ | {
"a_id": [
"cimzkfi",
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"http://vident.com/products/shade-management/vita-... | ||
eog2lv | why does fluid come out of our eyes when we get “sad” or upset? how could a genetic characteristic like that develop? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/eog2lv/eli5_why_does_fluid_come_out_of_our_eyes_when_we/ | {
"a_id": [
"fecjsz2"
],
"score": [
7
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"text": [
"It signals to the social unit around the individual that there is a crises, motivating the social unit to care for the individual. \n\nCheck out when babies learn to fake crying to get their parents to do stuff."
]
} | [] | [] | [
[]
] | ||
f9r71 | Is Handedness Genetic? | I looked it up on Wikipedia and there seemed to be some uncertainty about whether it is genetic or behavioral. Before I delve down the rabbit hole, I'd figure I'd ask the biologists here on Reddit. | askscience | http://www.reddit.com/r/askscience/comments/f9r71/is_handedness_genetic/ | {
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"c1ecvli",
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"text": [
"I thought [this article](_URL_0_) was very interesting, and discusses a lot of the hard data in a readable way. The TL:DR based on twin studies: it's both genes and environment.",
"the way I've h... | [] | [] | [
[
"http://www.thetech.org/genetics/ask.php?id=124"
],
[],
[]
] | |
wm3gf | cellphone data (what it's for, usage, plans, anything you can contribute) | Hey there reddit,
I'm a few months away from getting a new phone, and I'm considering switching carriers as well.
For the first time in my life, I would like to get a smartphone, and I know this entails purchasing a data plan of some sort. That being said, I have no idea *what* that is exactly (I think it's used for... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/wm3gf/eli5_cellphone_data_what_its_for_usage_plans/ | {
"a_id": [
"c5ehx7x"
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"text": [
"Data is downloading things (games, emails, applications, photos), or accessing the Internet through a browser or application (checking the scores) only when not in range of a connected WiFi network.\n\nIt's Internet over the cellular network away... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Bandwidth_throttling"
]
] | |
o2fcd | Is there any merit in claims of LENR or "Cold Fusion"? | With [Andrea Rossi recently claiming to have a working, commercially viable cold fusion reactor](_URL_3_), but not producing any convincing evidence to back it up, everyone seems convinced that the field of LENR in general is Pseudoscience.
However, I recently found [this video](_URL_1_) from the US Navy's Space and N... | askscience | http://www.reddit.com/r/askscience/comments/o2fcd/is_there_any_merit_in_claims_of_lenr_or_cold/ | {
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2,
2
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"text": [
"Really the short answer to \"how much credibility does this cold fusion experiment have\" is always none.\n\nNo matter how much you want to touch two hydrogen nuclei together, you need to slam them toge... | [] | [
"http://newenergytimes.com/v2/reports/SSC-SD-Refereed-Journal-Articles.shtml",
"http://www.youtube.com/watch?v=VymhJCcNBBc",
"http://bisbee.net/wp/wp-content/uploads/2011/12/SPAWAR-MAY-9-2009.pdf",
"http://www.wired.co.uk/news/archive/2011-10/29/rossi-success"
] | [
[
"http://aleklett.wordpress.com/2011/04/11/rossi-energy-catalyst-a-big-hoax-or-new-physics/"
],
[
"http://physicstoday.org/journals/doc/PHTOAD-ft/vol_58/iss_1/31_1.shtml?bypassSSO=1"
],
[]
] | |
9e60jf | Huey Long was called one of the 'most dangerous men in America' by FDR and he inspired Sinclair Lewis's "It Can't Happen Here"- what was it about him that caused such worries? Was there any substance to their concerns? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9e60jf/huey_long_was_called_one_of_the_most_dangerous/ | {
"a_id": [
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51,
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"text": [
"Great question! This guy intrigues me. As a follow-up question, what kind of opinions have Marxist historians formed about Huey Long?",
"In case you don't see it, I gave a more through response to a follow up question, ... | [] | [] | [
[],
[]
] | ||
5ez1df | how and why can something be "so ugly that it's kind of cute"? | Is there a biological reason for this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ez1df/eli5_how_and_why_can_something_be_so_ugly_that/ | {
"a_id": [
"dag7fao"
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"score": [
4
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"text": [
"Because you should always take care of the little ones. Our brain make us want to take care of things. It's to ensure our babies grow up big and strong. So sometimes, when something is \"ugly\" and little or alone, our brains tricks you into thin... | [] | [] | [
[]
] | |
9h9n9r | does butchered meat from a slaughtered animal go through normal death processes like rigor mortis? is it different for fresh slaughtered butchered meat vs. meat that has been left on carcass for a few days (like to bleed out?) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9h9n9r/eli5_does_butchered_meat_from_a_slaughtered/ | {
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"https://youtu.be/MmHiZQRaso0"
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3p2ktg | How were scientists able to study molecular structure in the 1800's? | I was just watching a SciShow video about how scientists discovered what the compound vanillin "looked like" (what gives vanilla it's taste), aka it's molecular structure... and tried to recreate it from a component in tree bark. Then I learned this was in 1874. I thought I misheard it at first.
How in the world w... | askscience | https://www.reddit.com/r/askscience/comments/3p2ktg/how_were_scientists_able_to_study_molecular/ | {
"a_id": [
"cw2zyl5",
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6,
3,
4
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"text": [
"This is a totally legitimate question. \n\nNowadays, we use techniques like [crystallography](_URL_0_), [NMR](_URL_4_), [mass spectrometry](_URL_2_), and others to characterize a molecule's structure. T... | [] | [] | [
[
"https://en.wikipedia.org/wiki/X-ray_crystallography",
"https://en.wikipedia.org/wiki/Vanillin",
"https://en.wikipedia.org/wiki/Mass_spectrometry",
"https://commons.wikimedia.org/wiki/File:Tiemann,_Haarmann-Ueber_das_Coniferin.pdf",
"https://en.wikipedia.org/wiki/Nuclear_magnetic_resonance"
... | |
163b25 | What happens if a person with an extra chromosome mates with a person with a normal amount of chromosome? | Also what happens if a person that is missing a chromosome mates with a person with a normal amount of chromosomes? | askscience | http://www.reddit.com/r/askscience/comments/163b25/what_happens_if_a_person_with_an_extra_chromosome/ | {
"a_id": [
"c7sc679"
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"score": [
3
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"text": [
"Well, a person missing an entire chromosome and still healthy enough to make progeny is going to be a rare thing. The only \"common\" (in the chromosomal disorder sense) monosomy that's survivable is Turner syndrome, in which a outwardly female h... | [] | [] | [
[]
] | |
10d1tl | When a fish is out of water, is it actually unable to breath in the way we imagine it wouldn't be able to, like how it is for us when we're under water? | askscience | http://www.reddit.com/r/askscience/comments/10d1tl/when_a_fish_is_out_of_water_is_it_actually_unable/ | {
"a_id": [
"c6ceu88"
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"text": [
"Fish are still able to extract oxygen from the air; after all, water holds at most less than [15 parts per million oxygen (and that's under optimal conditions).](_URL_1_) Compare with atmospheric air, at ~20% oxygen.\n\nBut the drying of the gill... | [] | [] | [
[
"http://animal-world.com/encyclo/fresh/Misc_PseudoBony/SouthAmericanLungfish.php",
"http://www.engineeringtoolbox.com/oxygen-solubility-water-d_841.html"
]
] | ||
41vd3p | Operation Drumbeat" and the first eight-months of 1942, when Germany launched a U-boat blitz against merchant shipping along the American coast, why were not more warnings issued to seagoing vessels? | Why was it not blazed acrossed evey front page paper that Americans were dying/sitting ducks? Ok, Admiral Ernest King gets much blame but what about Roosevelt, the Joint Chiefs of Staff, U.S. Department of Defense. Senators, the press? Silence seems like the very worst approach. "In the first eight months of 1942, Ger... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/41vd3p/operation_drumbeat_and_the_first_eightmonths_of/ | {
"a_id": [
"cz5ly9t"
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"text": [
"While anyone who was a crewmember in the Merchant Marine or an Allied seagoing vessel would be well aware of the threat of U-Boats along the American East Coast (especially since U-Boats had been attacking Atlantic sea traffic well before Operati... | [] | [] | [
[
"http://www.worldcat.org/title/merchant-mariners-at-war-an-oral-history-of-world-war-ii/oclc/213408487&referer=brief_results",
"http://www.worldcat.org/title/heroes-in-dungarees-the-story-of-the-american-merchant-marine-in-world-war-ii/oclc/32166178",
"http://www.worldcat.org/title/bloodstained-se... | |
42m3y9 | Can extremely hot temperatures solidify lava if the temperature is colder than the lava? | Sorry, my title may be a little bit vague. I was thinking about how boiling water can be cooled down with colder water and it would stop boiling, because it was cooled down lower than the boiling point. So if lava is melted rock and roughly 2,000 degrees, can I re-solidify it if I were to use something that was signifi... | askscience | https://www.reddit.com/r/askscience/comments/42m3y9/can_extremely_hot_temperatures_solidify_lava_if/ | {
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"czbgyc9",
"czc43r4",
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4,
2,
2
],
"text": [
"I'm not really sure I fully understand what you're asking, but a few things to consider are the thermal properties of the material you're talking about and some details of how rocks behave when cooled. ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Heat_transfer_coefficient",
"http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/meltrock.html",
"http://pubs.usgs.gov/of/1988/0441/report.pdf"
],
[],
[]
] | |
9rfk11 | why are our feet more sensitive to hot water than our hands. | For example feeling the water of the bath with one hand feels hot, but stick a foot in it and you want to die.
With our feet being abused I would expect the opposite.
My guess would be that the hands being our principal touch organ they need to feel a wider range? Still feels weird | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9rfk11/eli5_why_are_our_feet_more_sensitive_to_hot_water/ | {
"a_id": [
"e8ghqi0"
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"score": [
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"text": [
"Our bodies can only feel *differences* in temperature, not the actual temperature.\n\nFor example, you can set up 3 bowls filled with cold, room temperature, and warm water. Put one hand in the cold water and the other hand in the warm water for... | [] | [] | [
[]
] | |
dveoyr | do people in good health need less sleep ? | Since sleep helps our body recover, do healthy people need less sleep than people who smoke, drink, etc. ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dveoyr/eli5_do_people_in_good_health_need_less_sleep/ | {
"a_id": [
"f7c9fc9"
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"score": [
3
],
"text": [
"Nope, but the other way round. People who get enough sleep tend to be healthier and less illness-prone than sleep deprived people. Factors as alcohol, drugs, cigarettes and so on do have little impact on how much sleep a human body needs."
]
} | [] | [] | [
[]
] | |
1d6vnq | Why exactly did space exploration become less of a priority after landing on the moon? | With all of this Mars One talk around Reddit (I admit, I was briefly fooled,) I've been wondering what the hold up is in getting there, especially since we reached the moon nearly 50 years ago, now.
As someone who knows next to no history about this time period/mad dash to space, it seems like after we beat the Russi... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1d6vnq/why_exactly_did_space_exploration_become_less_of/ | {
"a_id": [
"c9nh9mz"
],
"score": [
3
],
"text": [
"Nixon's escalation of the Vietnam War, aka peace with honor meant less funds for domestic spending and NASA. NASA scrambled to augment science on the remaining Apollo missions as well as trying to utilize as much built equipment: the Apollo Soyuz... | [] | [] | [
[]
] | |
d5ef8w | How do we know that the Ice on other planets consists of H2O? | Watching another run of the mill "Colonize Mars" videos and I heard what I've heard hundreds of times before about there being ice underneath the surface. I remember hearing the same about there being ice on the Moon and even Pluto.
I never thought about it before, but how are we sure the frozen liquid we've found is ... | askscience | https://www.reddit.com/r/askscience/comments/d5ef8w/how_do_we_know_that_the_ice_on_other_planets/ | {
"a_id": [
"f0lgc7g",
"f0lgvso",
"f0ljcmk",
"f0m98ie"
],
"score": [
15,
3,
12,
3
],
"text": [
"In many cases it's not H20,but other liquids.\n\nIt is really just a deduction based on:\n\n\\- What liquids we know are easily formed from chemical reactions or base elements, t... | [] | [] | [
[],
[],
[
"http://www.scholastic.com/browse/subarticle.jsp?id=2498",
"http://curious.astro.cornell.edu/physics/56-our-solar-system/planets-and-dwarf-planets/general-questions/199-how-do-we-know-what-other-planets-and-stars-galaxies-etc-are-made-of-intermediate"
],
[]
] | |
133k8x | What is happening to sauce in foods that will "thicken upon standing"? | For example, making stove top fettuccine alfredo the directions say to remove from heat and let stand for a few minutes so the sauce will thicken. How come it thickens by not doing anything? Why is heating it more or stirring it not beneficial to the thickening process? | askscience | http://www.reddit.com/r/askscience/comments/133k8x/what_is_happening_to_sauce_in_foods_that_will/ | {
"a_id": [
"c70hok9",
"c70i11w",
"c70imsy",
"c7196nm"
],
"score": [
6,
3,
3,
2
],
"text": [
"Protein in the sauce. The protein strands thicken and bond creating a thick substance. This is the same as an egg white being stirred/whipped: it becomes an airy solid, almost like... | [] | [] | [
[],
[],
[],
[]
] | |
33vm90 | How are earthquake-damaged roads repaired? | Specifically those with large fissures like [this one](_URL_0_) posted by /u/saranowitz | askscience | http://www.reddit.com/r/askscience/comments/33vm90/how_are_earthquakedamaged_roads_repaired/ | {
"a_id": [
"cqp12px"
],
"score": [
6
],
"text": [
"It depends on how far shifted/damaged/destoryed they are. I'm not a degreed engineer and won't claim to be, but logic dictates that 'earthquake damaged' likely has a scale of sorts. \n\nSo, for something where the quake just caused fractures and ... | [] | [
"http://i.imgur.com/u7dtXAx.jpg"
] | [
[]
] | |
2jsoc0 | Do rockets going to outer space cause any kind of depletion in the Ozone layer? | Does it put a temporary hole that leaks any significant amount of ozone? | askscience | http://www.reddit.com/r/askscience/comments/2jsoc0/do_rockets_going_to_outer_space_cause_any_kind_of/ | {
"a_id": [
"clesn83"
],
"score": [
10
],
"text": [
"No. A few things you need to realize:\n\n1. The atmosphere is held to the Earth by gravity. It is not held there by some giant wall that can be punctured and leak. To get a significant amount of gas in the atmosphere to float off into space, you... | [] | [] | [
[]
] | |
2jd72r | How did Mesoamerican societies (Aztecs, Maya, Olmecs, etc.) do large scale agriculture? How different was it from European agriculture? | It's clear from the cities with tens of thousands of people, especially around lake Texcoco, that farming was a large portion of life. How was it done?
How similar was it to European agriculture? How much more difficult was it, without (as far as I know) domesticated draft animals? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2jd72r/how_did_mesoamerican_societies_aztecs_maya_olmecs/ | {
"a_id": [
"clauoyq",
"clauqgk",
"clb3wvt",
"clb4ssx"
],
"score": [
15,
6,
4,
9
],
"text": [
"Around lake Texcoco the main method for large-scale agriculture was the Chinampa, which used small, rectangular areas of fertile arable land to grow crops on the shallow lake beds... | [] | [] | [
[
"http://northeasternpermaculture.wikispaces.com/file/view/mx_city_floating_gardens.pdf",
"http://www.sscnet.ucla.edu/ioa/backdirt/Fallwinter00/farming.html",
"http://www.amazon.com/ind%C3%ADgena-Fideicomiso-Historia-Americas-Spanish/dp/9681664345/ref=sr_1_1?s=books&ie=UTF8&qid=1413436783&s... | |
2672wy | Was it reasonable for Belgium and the Netherlands to assume they could remain neutral in a future war during the Interwar Period? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2672wy/was_it_reasonable_for_belgium_and_the_netherlands/ | {
"a_id": [
"chocefb"
],
"score": [
10
],
"text": [
"The interwar period is a long period. 1920 is very different from 1939 (for Dutch and Belgian purposes still 'interwar'). Most of my 'expertise' lies with the Netherlands, so I'll limit my reply to that country.\n\nI'm not sure it was an assumpt... | [] | [] | [
[]
] | ||
3mcj2p | What determined whether one would get access to higher education in East Germany? | I recently read some texts about life in East Germany, and there were claims that it was very difficult for children of academics or priests to get accepted to higher schools or universities. How exactly did this system work and how was it justified by the state? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3mcj2p/what_determined_whether_one_would_get_access_to/ | {
"a_id": [
"cve5kdt"
],
"score": [
8
],
"text": [
"The justification is perhaps easier to understand. As a socialist state, the German Democratic Republic prided itself on (supposedly) representing the interests of the (East) German working class. This included opening up opportunities to the stu... | [] | [] | [
[]
] | |
2cgy2d | why can't someone just calm down when they are having a panic/anxiety attack? | I know that telling someone to calm down in such a situation is useless, and it usually will just make it worse, but why? Even if nobody tells them to do anything, why is it so seemingly impossible? I ask because I've never really had a problem with anxiety; when I'm stressed I typically just begin feeling tired, so ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2cgy2d/eli5_why_cant_someone_just_calm_down_when_they/ | {
"a_id": [
"cjfczcn",
"cjfd0eb",
"cjfdge7",
"cjfe74n",
"cjff93i",
"cjfmmxi"
],
"score": [
2,
46,
32,
2,
3,
6
],
"text": [
"I think it has something to do with awareness. Like, something stressful happens so a panic/anxiety attack starts. Someone else goes \... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
1w4bfb | why is alcohol legal? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1w4bfb/why_is_alcohol_legal/ | {
"a_id": [
"ceyk0i1",
"ceyk0j3"
],
"score": [
2,
3
],
"text": [
"Last time it was illegal more harm was done than good.",
"People like it."
]
} | [] | [] | [
[],
[]
] | ||
n5vrf | star wars | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/n5vrf/star_wars/ | {
"a_id": [
"c36io99",
"c36lz1k",
"c36io99",
"c36lz1k"
],
"score": [
8,
5,
8,
5
],
"text": [
"Assuming you're not trolling...\n\nCrazy fans aside, Star Wars is basically a fantastic telling of a classic story. A boy from the middle of nowhere is suddenly caught up in a reb... | [] | [] | [
[],
[],
[],
[]
] | ||
tnscb | Is the Earth forever getting saltier? | I was thinking about this as I pissed into fresh water, a commodity first world countries have at their fingertips. Since salt is (how I understand it) not *too* reactive, it stays salt. However, more reactive Na+ and Cl- collide and add to the saltiness we know as mines and water. True? | askscience | http://www.reddit.com/r/askscience/comments/tnscb/is_the_earth_forever_getting_saltier/ | {
"a_id": [
"c4o89jy"
],
"score": [
5
],
"text": [
"Earth as a whole is not getting saltier. The oceans may see some increase in salinity over time, but you have to bear in mind that salt is also removed from the oceans in a lot of locations by barred-basin evaporation. We can find large deposit... | [] | [] | [
[]
] | |
4gnwfz | Did the Romans need their navy after they controlled all the land surrounding the Medditerranean Sea? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4gnwfz/did_the_romans_need_their_navy_after_they/ | {
"a_id": [
"d2jqlfy",
"d2jsfwu"
],
"score": [
2,
20
],
"text": [
"Rome essentially let her navy decay after the Punic Wars, often recruiting or conscripting ships from allies in emergencies until the Civil Wars, when the contestants again built up large navies. Octavian (Augustus) organiz... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/3duxyu/did_the_roman_empire_have_a_system_in_place_for/ct8xhbk"
]
] |
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