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 |
|---|---|---|---|---|---|---|---|---|---|
1ysez0 | An injured caterpillar pupates. Will the butterfly be injured? | Let's assume a caterpillar is injured, but still strong enough to pupate.
I guess that during metamorphosis a lot of organs are rearranged or newly built. However if this rearrangement is based on organs that are not fully functional anymore then wouldn't there be traces of the injury?
| askscience | http://www.reddit.com/r/askscience/comments/1ysez0/an_injured_caterpillar_pupates_will_the_butterfly/ | {
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"It would depend largely on what portion of the insect was damaged, assuming it didn't lose enough hemolymph to die outright. \n\nFor instance, if it suffered a substantial brain injury - one that inhibits the prothoracic gl... | [] | [] | [
[],
[
"www.radiolab.org/story/goo-and-you/"
]
] | |
2ea85t | why does my brain resist exercise until i feel shitty for not exercising? why doesn't my brain crave exercise, knowing i'll feel better for it after? | I realise it's all about routine and perhaps I'll crave it once I get into more of a habit, but why do people's brains allow them to get out of shape and unhealthy to begin with?
Same for eating healthily, why do we crave shitty, fatty foods instead of fruit and veg?
You can say it, I'm just lazy! :P | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ea85t/eli5_why_does_my_brain_resist_exercise_until_i/ | {
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"text": [
"Because for most of our existence we had to fight very, very hard to survive. That meant eating the food with the most calories because we didn't know when we'd be eating again, and not expending extra energy if we didn't ne... | [] | [] | [
[],
[]
] | |
47zik7 | Why does cornstarch dissolve better in cold water? | I remember learning in science class that heat is a catalyst for chemical reactions, such as dissolving. Then why do substances like cornstarch dissolve much better in cold liquids? | askscience | https://www.reddit.com/r/askscience/comments/47zik7/why_does_cornstarch_dissolve_better_in_cold_water/ | {
"a_id": [
"d0ghlsi"
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"score": [
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"text": [
"The thing is, it doesn't. \n\nYou're right that things dissolve more quickly and usually reach a higher concentration at higher temperatures. This is especially true when you talk about small molecules like sugars or ionic substances like salts. ... | [] | [] | [
[]
] | |
6x44m7 | when a person or corporation "pledges" a dollar amount to disaster relief, what exactly do they do with that amount of money (typically)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6x44m7/eli5_when_a_person_or_corporation_pledges_a/ | {
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"text": [
"Often, they'll just give the amount to a big, general relief charity like the Red Cross or perhaps a government agency handling the purchase or relief goods. Or if they have a product that is useful, they may donate that amount of the product (sa... | [] | [] | [
[]
] | ||
1mr2s7 | Can the brain/consciousness be effected by electromagnetism? | Can the brain/consciousness be effected by electromagnetism?
If enough electromagnetism is used at some point won't it cause ionization / electrons to jump to higher orbits/shells? I know that there is some threshold for electromagnetism.
then what happens to someones brain? Are you cooking it/exciting all the ato... | askscience | http://www.reddit.com/r/askscience/comments/1mr2s7/can_the_brainconsciousness_be_effected_by/ | {
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"text": [
"Yes. You may be interested in [transcranial magnetic stimulation (TMS)](_URL_2_) or [transcranial direct current stimulation (tDCS)](_URL_1_). TMS can be applied as a single puls... | [] | [] | [
[
"http://www.ncbi.nlm.nih.gov/pubmed/23562964",
"http://en.wikipedia.org/wiki/Transcranial_direct-current_stimulation",
"http://en.wikipedia.org/wiki/Transcranial_magnetic_stimulation",
"http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0034993"
],
[
"http://en.wikipedia.or... | |
1sbdvz | why do police who do horrible things in the media seem never to get punished? what's actually going on? | No text. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sbdvz/eli5_why_do_police_who_do_horrible_things_in_the/ | {
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"text": [
"According to a recent post on reddit, what actually happens (in the US at least) is that they go on paid leave while two investigations (a criminal and then an administrative one... | [] | [] | [
[],
[
"http://www.reddit.com/r/ProtectAndServe/comments/1s01lr/most_common_myth/cdslvma"
],
[],
[]
] | |
7pvxqx | how do scientists know that a rock is from space and not of earthly origin? | I was reading [this article about the Hypatia stone](_URL_0_) and was wondering how they know the origin is not earthly. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7pvxqx/eli5_how_do_scientists_know_that_a_rock_is_from/ | {
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"text": [
"Not sure if related, but there are certain micro/atomic structures that are indicators of certain things.\n\nSimilar to when coal is subjected to incredibly high pressure, temperature and time it will form into a diamond, t... | [] | [
"http://www.popularmechanics.com/science/a15050414/incredible-hypatia-stone-contains-compounds-not-found-in-the-solar-system/"
] | [
[
"https://en.wikipedia.org/wiki/Widmanstätten_pattern"
],
[
"https://en.wikipedia.org/wiki/Meteoric_iron#/media/File:TolucaMeteorite.jpg"
]
] | |
1behi3 | What kind of toxins (such as pesticides) are found to be stored in our adipose tissue? | I am curious about this because I know DDT is still used in places around the world such as China and we get a lot of our food from there. So does this end up getting flushed away in our toilets eventually or is it stored in our fat cells? | askscience | http://www.reddit.com/r/askscience/comments/1behi3/what_kind_of_toxins_such_as_pesticides_are_found/ | {
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"text": [
"Assuming you've been exposed to a given compound, this depends on the polarity of the compound and its metabolites. Lipophilic molecules are more likely to accumulate in adipose tissue, whereas hydrophilic ones are more easily excreted. Lipophi... | [] | [] | [
[]
] | |
3leitx | Did Wilson intend for the League of Nations to have an army? | In speech class the other day, my teacher who's a history fanatic made the claim that one of Wilson's ideas was for the League of Nations to become a United Nations with an army. However, I can't seem to find anything to back that up. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3leitx/did_wilson_intend_for_the_league_of_nations_to/ | {
"a_id": [
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"text": [
"Actually, the League of Nations wasn't just Wilson's idea, he just happened to be in a position of great power at the time of its formation. So at the Paris Peace Conference, when the *Covenant of the League of Nations* was drafted, \n\n > \"Pre... | [] | [] | [
[
"http://www.let.rug.nl/usa/essays/1901-/the-league-of-nations-karl-j-schmidt.php"
]
] | |
3m9qak | where will the potentially $18 billion volkswagen fines go? | Who gets the money?
What will it be used for? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3m9qak/eli5where_will_the_potentially_18_billion/ | {
"a_id": [
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"score": [
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"text": [
"Governments. It is theoretically to go towards the costs of similar, future enforcement actions. ",
"To the government of course. .because you know. . They are the ones impacted the most by it. ..\n\nIt is kinda funny. .... | [] | [] | [
[],
[]
] | |
4n2rc1 | how does ice actually burn the skin? | What is the actual definition of *burning* when it comes to damaged tissue? Is it when your sensory receptors in your skin go ape shit do to coming in contact with extreme temperatures? Or the feeling simply be the burning sensation?
I'm burnt out just asking myself.
Ha... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4n2rc1/eli5_how_does_ice_actually_burn_the_skin/ | {
"a_id": [
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"score": [
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"text": [
"I'm not a doctor, but: \n\nTo my knowledge, a burn is when heat (or a chemical) causes tissue damage by denaturing proteins. Think of what happens to an egg when you cook it. The change you see is due to proteins unfolding or \"denaturing.\"\n\nS... | [] | [] | [
[]
] | |
hmwul | What is the chemical reaction pertaining to the fermentation of grape juice? | askscience | http://www.reddit.com/r/askscience/comments/hmwul/what_is_the_chemical_reaction_pertaining_to_the/ | {
"a_id": [
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"score": [
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],
"text": [
"C6H12O6 → 2 C2H5OH + 2 CO2"
]
} | [] | [] | [
[]
] | ||
1762u4 | How do museums decide which artifacts to display? | What's taken into consideration? Is there a rotation system? Is it possible for members of the public to see archived artifacts? How much research and study *really* goes on at museums? Thanks. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1762u4/how_do_museums_decide_which_artifacts_to_display/ | {
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"text": [
" > What's taken into consideration? Is there a rotation system? Is it possible for members of the public to see archived artifacts? How much research and stu... | [] | [] | [
[],
[
"http://www.museum.manchester.ac.uk"
],
[],
[],
[]
] | |
2fktnz | what exactly is happening when you hold your nose and blow to help relieve your ears during pressure changes in an airplane? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2fktnz/eli5_what_exactly_is_happening_when_you_hold_your/ | {
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"text": [
"Your middle ear is connected to the nasal cavity by a [eustachian tube](_URL_0_) and as the animated gif shows, you make the tympanic membrane go back to normal when you hold your nose and force air up the tube.",
"That... | [] | [] | [
[
"http://gkarkour09.wikispaces.com/file/view/middle-ear-pressure.gif/77170639/middle-ear-pressure.gif"
],
[
"http://en.wikipedia.org/wiki/Valsalva_maneuver"
]
] | ||
1oz9f8 | saudi arabia says it's rejection of a unsc seat is a "message for the us, not the un." how does this make sense? | It seems to me like accepting a Security Council seat would give Saudi Arabia more influence and ability to pressure the US to adopt a stance on Syria closer to their own. How does denying this opportunity present a "message to the US"? It seems like shooting themselves in the foot more than anything, but I feel like I... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1oz9f8/eli5_saudi_arabia_says_its_rejection_of_a_unsc/ | {
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"text": [
"If Saudi Arabia accepts the UNSC seat, then they do have more power, but they also give up some power because they are now part of this body and have to play by some new rules.\n\nHaving given it up, they are telling the United States (and the wo... | [] | [] | [
[]
] | |
26veiu | How large of an impact did the 2010 eruption of Eyjafjallajökull have on the CO2 levels in our atmosphere? | askscience | http://www.reddit.com/r/askscience/comments/26veiu/how_large_of_an_impact_did_the_2010_eruption_of/ | {
"a_id": [
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3,
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],
"text": [
"According to the climate science referenced here: _URL_0_ by scientist Richard Milne, the yearly impact of humans on the climate is 100 times that of all the volcanoes that go off in a year. Based on that, I supposed the ans... | [] | [] | [
[
"http://youtube.com/watch?v=gh9kDCuPuU8"
],
[
"http://volcanoes.usgs.gov/hazards/gas/climate.php",
"http://en.wikipedia.org/wiki/Consequences_of_the_April_2010_Eyjafjallaj%C3%B6kull_eruption#Effect_on_the_environment",
"http://www.factcheck.org/2010/06/eruption-corruption/"
]
] | ||
1a96lr | Does an average snowflake have more or less water than an average raindrop? | I've recently got into an argument about this. I would guess that a raindrop has more water since they seem heavier than snowflakes, but I couldn't find a source for it. So, which was has more water and why? I guess we could also add hail into the mix too. | askscience | http://www.reddit.com/r/askscience/comments/1a96lr/does_an_average_snowflake_have_more_or_less_water/ | {
"a_id": [
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"score": [
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"text": [
"An individual snowflake has mass ~1-3 milligrams (_URL_1_).\n\nRaindrops have mass from 4-100 milligrams (_URL_0_).\n\nSo, an average snowflake has less mass (and therefore water) than an average raindrop. \n\nHowever, there is great variability ... | [] | [] | [
[
"http://www.pnas.org/content/early/2012/05/25/1205446109.full.pdf+html",
"http://journals.ametsoc.org/doi/pdf/10.1175/2010JAS3390.1"
]
] | |
84hex2 | At what point in human evolution did we develop a dominant hand? Is this a trait found in other primates as well? | askscience | https://www.reddit.com/r/askscience/comments/84hex2/at_what_point_in_human_evolution_did_we_develop_a/ | {
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39,
136,
2756,
8,
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],
[],
[],
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"http://etc.usf.edu/lit2go/83/twenty-thousand-leagues-under-the-sea/1418/part-1... | ||
1ewrqu | the difference between pop and imap email protocol | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ewrqu/eli5the_difference_between_pop_and_imap_email/ | {
"a_id": [
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"text": [
"The biggest difference is that POP simply allows you to view or retrieve messages stored in a flat list on the server. You can order them by date, but that's about it. POP is useful if you want to organize and manage email messages entirely on th... | [] | [] | [
[]
] | ||
10ruc3 | Why did the UK and France support Finland in the Winter War but not the Continuation War? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/10ruc3/why_did_the_uk_and_france_support_finland_in_the/ | {
"a_id": [
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"score": [
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"text": [
"The simple answer is simply because Finland allied itself with Germany and fought against their ally, the Soviet Union. During the Winter War, UK and France had not yet allied themselves with the Soviet Union (due to the Molotov-Ribbentrop pact).... | [] | [] | [
[]
] | ||
2yv67h | We are told not to reuse the plastic bottles from bottled water because chemicals from the plastic will be leeched into the new water. What is different between the plastic/water from an unopened bottle and the plastic/water when the plastic bottle is refilled? | askscience | http://www.reddit.com/r/askscience/comments/2yv67h/we_are_told_not_to_reuse_the_plastic_bottles_from/ | {
"a_id": [
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"score": [
23,
21,
2
],
"text": [
"The chemical you're most likely referring to is Bisphenol A or BPA for short. The chemical can be leached into water or food that has been stored in the plastic bottle or container especially when hea... | [] | [] | [
[],
[],
[]
] | ||
14lg2k | It is often heard that drinking small amounts of alcohol is good for you, but what if you binge on Friday night then have the recommended 1-2 glasses a day the rest of the week. Does the binge make the daily alcohol worse for you? | askscience | http://www.reddit.com/r/askscience/comments/14lg2k/it_is_often_heard_that_drinking_small_amounts_of/ | {
"a_id": [
"c7e6cue"
],
"score": [
3
],
"text": [
"Could somebody explain how, if true, small amounts of alcohol is good for you?"
]
} | [] | [] | [
[]
] | ||
1fi9ad | Will there be an eventual limit to physical/athletic world records? It seems every year we run/pitch/jump/swim a mph/second faster/ foot higher. Will humans continue to become bigger stronger faster or will the body hit a point where it becomes physiologically impossible? | askscience | http://www.reddit.com/r/askscience/comments/1fi9ad/will_there_be_an_eventual_limit_to/ | {
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"score": [
310,
54,
36,
14,
... | [] | [] | [
[
"http://news.discovery.com/adventure/extreme-sports/two-hour-marathon-111017.htm"
],
[
"http://www.nytimes.com/interactive/2012/08/05/sports/olympics/the-100-meter-dash-one-race-every-medalist-ever.html?_r=0"
],
[
"http://en.wikipedia.org/wiki/High_jump"
],
[],
[],
[
"http://www.sl... | ||
meo3o | how a midi guitar works | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/meo3o/eli5_how_a_midi_guitar_works/ | {
"a_id": [
"c30ao8w",
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"score": [
3,
3
],
"text": [
"The guitar is just a controller, like for an xbox or playstation.\n\nLet's take a simple case, where the strings are only used to tell the guitar if they were hit or not. In this case, the guitar checks to see which string i... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Guitar_synthesizer#Guitar-like_MIDI_controllers"
],
[
"http://en.wikipedia.org/wiki/Guitar_synthesizer#Guitar-like_MIDI_controllers"
]
] | ||
ejcyjj | What are the colorful lines in NASA's Pale Blue Dot image? | [Image](_URL_0_) | askscience | https://www.reddit.com/r/askscience/comments/ejcyjj/what_are_the_colorful_lines_in_nasas_pale_blue/ | {
"a_id": [
"fcx3pti"
],
"score": [
42
],
"text": [
"Sunlight reflected in the camera. [The Wikipedia article explains it in more detail](_URL_0_). The Sun was just something like 1-2 degrees away from Earth as seen by Voyager."
]
} | [] | [
"https://imgur.com/a/7VJAueN"
] | [
[
"https://en.wikipedia.org/wiki/Pale_Blue_Dot"
]
] | |
54wu1c | What do historians think of Eric Williams book 'Capitalism and Slavery'? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/54wu1c/what_do_historians_think_of_eric_williams_book/ | {
"a_id": [
"d85nzrx"
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"score": [
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"text": [
"*Capitalism and Slavery* is one of the seminal works on modern slavery and its relationship to Capitalism. \n\nMany historiographical traditions saw slavery as a kind of throwback to pre-Modern social and economic institutions and not a part of ... | [] | [] | [
[]
] | ||
e9xtjv | Was Tuol Sleng the only prison in Cambodia under the Khmer Rouge? | I've visited the infamous prison in Phnom Penh on holiday. It was a shocking and terrible place. I was wondering however, surely there were other places like this during the Khmer Rouge regime? If so, what were they like and were they different to S-21? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/e9xtjv/was_tuol_sleng_the_only_prison_in_cambodia_under/ | {
"a_id": [
"famqant"
],
"score": [
6
],
"text": [
"On her visit to Democratic Kampuchea in 1978, Elizabeth Becker asked one of the top members of the Communist Party of Kampuchea (CPK) ‘Standing Committee’; Ieng Sary, whether her and the small delegation she was travelling with could see the pris... | [] | [] | [
[]
] | |
akge2b | why do scientists research commonly known stuff? | Just read about how research shows that stretching slightly reduces muscle soreness (_URL_0_).
It's been known in society for a long time before this that stretching reduces soreness, so who is paying scientists to research it and other things similar? What's the benefit to those paying? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/akge2b/eli5_why_do_scientists_research_commonly_known/ | {
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19,
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15,
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4,
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... | [] | [
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[],
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"https://www.effectivealtruism.org"
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] | |
26u0zs | Could a current be induced in plasma to make the matter expand instead of contract? | I was researching this topic and became interested. If you have any more interesting things about this subject, please feel free to share them. | askscience | http://www.reddit.com/r/askscience/comments/26u0zs/could_a_current_be_induced_in_plasma_to_make_the/ | {
"a_id": [
"churjaf"
],
"score": [
4
],
"text": [
"I assume you're talking about pinch devices like the [Z machine](_URL_0_) at Sandia National Laboratories? These machines operate by sending a very large current through a conductor called a liner. When this happens, a magnetic field is formed an... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Z_machine"
]
] | |
1msznm | since mars has no magnetic field, could we ever restore the atmosphere there? | More specifically curious as to whether or not mars could ever be made habitable for humans, or is that more like science fiction? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1msznm/eli5_since_mars_has_no_magnetic_field_could_we/ | {
"a_id": [
"cccc1w8"
],
"score": [
2
],
"text": [
"The dissipation of an atmosphere is an incredibly long process. Mars still has an atmosphere, so its not like it would just vanish. The main issue would be the creation of enough greenhouse and other gasses to counteract the dissipation. "
]
} | [] | [] | [
[]
] | |
6fmd9w | Why do things tear more easily once you get started? | If I have a segment of packing tape, it's very strong and difficult to tear. However, if I nick the edge first, it will tear relatively easily.
I notice this on plastic chip bags, candy wrappers, etc. Sometimes they'll give you a pre-notched area to make it easier to tear open.
Why is the outside edge seemingly stro... | askscience | https://www.reddit.com/r/askscience/comments/6fmd9w/why_do_things_tear_more_easily_once_you_get/ | {
"a_id": [
"dikgnzl"
],
"score": [
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"text": [
"Just some speculation, while waiting for a material scientist:\n\nI would think it has to do with concentrating the stress in the material. If the edge is intact, when you pull it, the entire edge is in tension, and the force is distributed. If t... | [] | [] | [
[]
] | |
1m81fl | Could Native Americans take advantage of the Homestead Act of 1862? | The Homestead Act, by my understanding, basically displaced a lot of Native Americans by giving settlers chunks of their land. And that's terrible.
But! Could a Native American claim a homestead (with the required improvements)? Obviously it would be horrible to think they *should* instead of living their own life... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1m81fl/could_native_americans_take_advantage_of_the/ | {
"a_id": [
"cc6oo3x",
"cc6qfyt"
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"score": [
3,
3
],
"text": [
"Hmm. Hopefully someone will know of specific instances of indigenous people doing this, or attempting to, but it seems to me that it would theoretically be possible. Here's the relevant portion of [the act](_URL_0_):\n\n > B... | [] | [] | [
[
"http://www.nps.gov/home/historyculture/upload/mw,pdf,homestead%20act,txt.pdf",
"http://en.wikipedia.org/wiki/Cimarron_(1931_film)"
],
[
"http://digital.library.okstate.edu/encyclopedia/entries/U/UN001.html",
"http://www.cherokeeheritage.org/attractions/storekeepers-house/",
"http://digita... | |
5bcrdw | Is there any primary evidence that exists that speaks of a trend of suicides and shifts in character as a result of the emotional and physical trauma of battle fatigue in ancient and medieval military veterans? | I've heard through some sources of battle fatigue in veterans suffering from what we now know as PTSD in wars earlier than the 20th Century. And of course logic would dictate that soldier of earlier wars still struggled with battle horrors. So while I think I know the answer to my question, is there any stories or evid... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5bcrdw/is_there_any_primary_evidence_that_exists_that/ | {
"a_id": [
"d9nhj9n"
],
"score": [
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"text": [
"Ok, this is an interesting one - I can offer an excellent article discussing the role of social support in post-event PTSD mitigation: _URL_0_\n\nGenerally, based on current understanding, you'd expect to see a variation in PTSD severity and dura... | [] | [] | [
[
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2921311/"
]
] | |
djdkkn | what exactly happens in the stomach when you bend over/lay over on your stomach right after eating? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/djdkkn/eli5_what_exactly_happens_in_the_stomach_when_you/ | {
"a_id": [
"f44eb07"
],
"score": [
3
],
"text": [
"What do you mean? What should happen?"
]
} | [] | [] | [
[]
] | |
4xehlx | Is listening to relaxing meditative music during study a help or a hindrance? | I've heard two schools of thought on this:
(1) It helps focus attention, bully out distracting thoughts from the mind and create a sense of relaxation to calm the anxiety of impending exams.
(2) You should study in exam conditions so that you don't need a certain external stimulus such as a chair, sound or smell to t... | askscience | https://www.reddit.com/r/askscience/comments/4xehlx/is_listening_to_relaxing_meditative_music_during/ | {
"a_id": [
"d6etnmg"
],
"score": [
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"text": [
"Being relaxed has been shown to have amazing effects on memory. We remember our relaxed moments way better and in more detail than stressed moments, which are often not really recorded at all, but some jumbled mess of half made up things. This i... | [] | [] | [
[]
] | |
fhmpz6 | Why did post-WW1 Hungary maintain a monarchy? | I read that after WW1, there was a regency for emperor Charles I, but he was prevented from taking the throne by the regent, twice. Why did this peculiar situation happen? Why didn't the Hungarian elect another king or do away with the monarchy entirely if the (rightful?) king is not allowed to take it? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/fhmpz6/why_did_postww1_hungary_maintain_a_monarchy/ | {
"a_id": [
"fkqb04y"
],
"score": [
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],
"text": [
"TL;DR There was no concensus on who should be the king, the political landscape was split roughly in two factions, one that wanted Charles back and one that wanted the right to freely elect a king; as sort of a compromise, after Charles failed to... | [] | [] | [
[]
] | |
b5pu6k | why is it that we use petrol as fuel when alcohol is both cheaper and easier to produce? | what cons does ethanol have compared to petrol? one thing i'm certain about is that ethanol is both cheaper and easier to produce. should have cons then. what's that? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b5pu6k/eli5_why_is_it_that_we_use_petrol_as_fuel_when/ | {
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"score": [
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27,
3,
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"text": [
"There is much less energy per gallon in ethanol than gasoline. It's slightly cheaper, per gallon, and slightly more expensive, per mile.\n\nEthanol is **not** easy to produce. ... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Burgan_field"
],
[]
] | |
35kvju | History of History | I would like to ask are there any sources that I can reference to regarding the evolution of the methods used in historical investigation (methodology of history). | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/35kvju/history_of_history/ | {
"a_id": [
"cr5gxl6"
],
"score": [
2
],
"text": [
"I feel like I recommend this book all the time, but it is almost *sui generis*, and very excellent: Peter Novick, *That Noble Dream: The “Objectivity Question” and the American Historical Profession* (Cambridge University Press, 1988). Not only d... | [] | [] | [
[]
] | |
yflzg | how can there be gas in space ? | I know that the space has an avg temperature of 2-3 K. This is below the melting point of all elements except helium . Hydrogen has a melting point of 14 K . Yet it is almost found everywhere . How ? | askscience | http://www.reddit.com/r/askscience/comments/yflzg/how_can_there_be_gas_in_space/ | {
"a_id": [
"c5v3qjf",
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5,
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"text": [
"Hydrogen has a melting point of 14 K *at atmospheric pressure.*\n\nWhen there's hardly any pressure (i.e. in space), things can remain a gas at lower temperatures.\n\nIn the same fashion, a glass of wa... | [] | [] | [
[],
[
"http://www.chemguide.co.uk/physical/phaseeqia/pdusual.gif"
],
[
"http://www.nature.com/nmat/journal/v10/n12/fig_tab/nmat3189_F2.html",
"http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/980301b.html"
]
] | |
3a1xo5 | how did people study the human body? | I understand the human anatomy can be studied by cutting open dead people, but how were we able to learn about, for example, how organs function, which would require people to be alive? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3a1xo5/eli5_how_did_people_study_the_human_body/ | {
"a_id": [
"cs8iwbf"
],
"score": [
4
],
"text": [
"The truth is that this is something that humanity was really, really bad at for a really long time and we had a lot of weird ideas about how things worked. Some people still believe weird stuff about the body to this day. It didn't help that peop... | [] | [] | [
[]
] | |
2lfgkr | why do people celebrate guy fawkes night? i mean, he was a terrorist. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2lfgkr/eli5_why_do_people_celebrate_guy_fawkes_night_i/ | {
"a_id": [
"clu9xuo",
"cluaaxk"
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"score": [
9,
5
],
"text": [
"They celebrate the fact that he was stopped, not the fact that he acted.",
"Guy Fawkes night is celebrating that the dastardly terrorist was caught!\n\nThe V for Vendetta Guy Fawkes mask thing is celebrating the guy who ... | [] | [] | [
[],
[]
] | ||
4pkgvc | How were train-mounted guns/cannons used during WW1? Were they to be used while the train was stopped, to shoot at stationary targets while moving, or to prevent people from chasing it down? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4pkgvc/how_were_trainmounted_gunscannons_used_during_ww1/ | {
"a_id": [
"d4m6xux"
],
"score": [
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],
"text": [
"The response you want on this question is probably this comment chain by /u/Georgy_K_Zhukov\n\n_URL_0_\n"
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/28gr18/what_is_the_point_of_armored_trains/"
]
] | ||
agzmto | What was the purpose of the Junkers JU 87 (Stuka Bomber) siren? | Whats the purpose of the stuka siren [_URL_0_](_URL_0_) You would think fear, since a new soldier would be scared out of his boots. but its a obvious warning for soldiers to get down, and the older soldiers would dive for cover. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/agzmto/what_was_the_purpose_of_the_junkers_ju_87_stuka/ | {
"a_id": [
"eeaza7s"
],
"score": [
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"text": [
"Found an older post here asking this question - the answers given are accurate by my recollection:\n\n[_URL_0_](_URL_1_)\n\n & #x200B;\n\nEdit: The first answer was provided by an account that has since been deleted - sorry mods. An insightful fo... | [] | [
"https://youtu.be/LCB8ZVxKqyI"
] | [
[
"https://www.reddit.com/r/AskHistorians/comments/227hu2/why\\_did\\_the\\_stuka\\_have\\_a\\_siren/",
"https://www.reddit.com/r/AskHistorians/comments/227hu2/why_did_the_stuka_have_a_siren/"
]
] | |
2ni53j | does gravity decrease at a constant rate the farther away from the surface you get? | If I weigh x on earth's surface, and near zero at the International Space Station, where and how does that transition take place?
Does the atmosphere have anything to do with it?
Would I weigh more at the bottom of a mine than on the surface? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ni53j/eli5_does_gravity_decrease_at_a_constant_rate_the/ | {
"a_id": [
"cmdt9cj"
],
"score": [
3
],
"text": [
"This is a good question because it illustrates a very common misunderstanding about space travel. \n\nThe answer to your question is \"yes\" - gravity decreases at a very specific, steady rate the farther away you get from an object.\n\nBut here'... | [] | [] | [
[]
] | |
f5l43z | why do depressed people have a harder time getting things done? why are "normal" people so much better at getting things started than us? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f5l43z/eli5_why_do_depressed_people_have_a_harder_time/ | {
"a_id": [
"fhzcl97"
],
"score": [
7
],
"text": [
"Your brain is entirely based on chemical reactions. When you do something rewarding (even mildly, like getting a chore done) your brain releases dopamine, a reward chemical. It makes you feel good, it’s your brain training itself to be like “if w... | [] | [] | [
[]
] | ||
eydwg6 | in order to determine traffic, how does google maps distinguish between phones being in cars on the street (actually traffic) and phones that are used by people in their homes right next to the road (no traffic)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/eydwg6/eli5_in_order_to_determine_traffic_how_does/ | {
"a_id": [
"fgglgr4"
],
"score": [
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"text": [
"I’d think they’d have a window and if it didn’t move for X seconds then it’s a pretty good guess that it’s not in a car. \n\nBut for all we know they have some other profile/method to determine with great accuracy what we’re doing. \n\nI’d be int... | [] | [] | [
[]
] | ||
5rn65n | why can't we cut our body fat directly? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5rn65n/eli5_why_cant_we_cut_our_body_fat_directly/ | {
"a_id": [
"dd8lwfl",
"dd8lwyz",
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"score": [
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7,
5
],
"text": [
"Fat is difficult for the body to process because it isn't water soluble, but stores energy very efficiently (compared to glucose, it stores about twice the energy per gram). It is stored in adipose tis... | [] | [] | [
[],
[],
[]
] | |
87vp6q | If I were an average citizen in East Germany around 1985, could I get to West Germany in any legal way? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/87vp6q/if_i_were_an_average_citizen_in_east_germany/ | {
"a_id": [
"dwg4p2y"
],
"score": [
2
],
"text": [
"Previously raised questions are certainly allowed. Mentioning previous answers are intended to be a starting point, not to discourage discussion. Follow-on questions, data, and debate are welcome.\n\nI PMed to ask what \"get to\" meant: \"visit... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/2luour/why_did_people_try_to_defect_over_the_wall_in/clycyfi/",
"https://www.reddit.com/r/AskHistorians/comments/5peclu/could_you_legally_leave_east_germany_for_west/",
"https://www.reddit.com/r/AskHistorians/comments/13b6xt/what_was_life_like_in_east_g... | ||
6w4df2 | as a kid i hated the taste of broccoli, but as an adult i love it, how does that work? | I remember almost spewing from the foul taste of broccoli as a child. I also remember the day when a friend made broccoli soup with blue cheese, I hated both, but the combination triggered something and after that I love both broccoli and blue cheese. It's like as if they have a completely different taste since then.
... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6w4df2/eli5as_a_kid_i_hated_the_taste_of_broccoli_but_as/ | {
"a_id": [
"dm593a8"
],
"score": [
3
],
"text": [
"Children have a lot more taste buds than adults and those are a lot more sensitive to bitter sensations. Which makes Broccoli pretty much their mortal enemy. \nOver the years the amount of tastebuds reduces as does their sensitivity. \n\nThat's w... | [] | [] | [
[]
] | |
ks5mb | Is it normal to never get sick? | I am 23 and haven't gotten sick in a little over 7 years. I don't eat healthy or do anything to promote a healthy lifestyle, but I never get sick anymore. No colds, no flu, and I haven't gotten vaccines for these either. Everyone I know gets sick at least once or twice a year but I don't.
I guess what I want to know ... | askscience | http://www.reddit.com/r/askscience/comments/ks5mb/is_it_normal_to_never_get_sick/ | {
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"score": [
11,
2,
3,
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11,
2,
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"text": [
"It's actually quite common for young people. It also depends a lot on self-perception and ... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[]
] | |
8hadfu | how do you fry ice cream. | I’ve always wondered how ice cream is fried. Someone please help! | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8hadfu/eli5_how_do_you_fry_ice_cream/ | {
"a_id": [
"dyi8gp4",
"dyiop77",
"dyited7"
],
"score": [
58,
6,
7
],
"text": [
"You superchill the Cream first, coat it in a tempura batter and fry it at a very high temperature.\n\nThe outer tempura crust is what actually \"fries\" and it insullates the soft icecream inside a nic... | [] | [] | [
[],
[],
[]
] | |
5ihdto | what exactly can workplace it staff see, besides my browsing history? | For example, can they see passwords I've entered for non-work websites? Can they view files saved on my hard drive? I really doubt that that anyone at my workplace *would* (they have better things to do and I'm not that interesting), but ever since I learned that browsing histories are saved, I've wondered what else ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ihdto/eli5_what_exactly_can_workplace_it_staff_see/ | {
"a_id": [
"db84rso",
"db84sb9",
"db85b1d",
"db880qd",
"db890er",
"db8f3gl"
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"score": [
5,
3,
2,
2,
10,
3
],
"text": [
"I work for a technology company and can tell you for a fact that other than browsing history, my company can see any document I type ou... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
6k3kje | everytime i see a shark swimming on tv, there are tiny fish swimming alongside and under it. why is it so? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6k3kje/eli5_everytime_i_see_a_shark_swimming_on_tv_there/ | {
"a_id": [
"djj1nut",
"djj1pmg"
],
"score": [
2,
4
],
"text": [
"It's possible you are seeing remoras. There are remoras that typically follow a host animal and enjoy a symbiotic relationship. The remora cleans debris and parasites from the host, and gets to eat all the parasites, feces, ... | [] | [] | [
[],
[]
] | ||
1jcwzi | What is the theoretical maximum for wind speed? | Is there a limit? Could we theoretically mechanically propel wind at an infinite speed? or is there a limitation based on atmospheric physics?
The Hyperloop sparked this idea. Thanks! | askscience | http://www.reddit.com/r/askscience/comments/1jcwzi/what_is_the_theoretical_maximum_for_wind_speed/ | {
"a_id": [
"cbdes91"
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"score": [
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"text": [
"_URL_0_\n\n > The winds in the planets' wide equatorial jet streams rip along at speeds of up to 450 miles an hour on Uranus and as high as 1,300 miles an hour on more-distant Neptune.\n\n > The planets beyond Mars exhibit the highest winds speed... | [] | [] | [
[
"http://www.csmonitor.com/Science/2013/0517/Why-do-planets-farthest-from-sun-have-highest-winds-Team-closes-in-on-answer"
]
] | |
1f0a39 | What was the relationship with Israel and the surrounding Arab neighbors like prior to the 1967 Six-Day war? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1f0a39/what_was_the_relationship_with_israel_and_the/ | {
"a_id": [
"ca60qti"
],
"score": [
2
],
"text": [
"Egypt, Jordan, Syria, and some other Arab states and Israel were still at war, there was just a cease-fire. There was somewhat less tension with Jordan--the governments had been talking in secret. But they were still at war, and there were cros... | [] | [] | [
[]
] | ||
27asrv | When trying to find theoretical particles or forces, etc, how do scientists figure out what experiments would give the best chance at discovery? | I was listening to an old RadioLab podcast about Symmetry the other day, and the topic of matter and antimatter came up, specifically about the discovery of the positron. The experiment they described talked about visualizing the trail in some type of vapor left behind by a passing positron. This was such a fascinati... | askscience | http://www.reddit.com/r/askscience/comments/27asrv/when_trying_to_find_theoretical_particles_or/ | {
"a_id": [
"chz1eh1"
],
"score": [
4
],
"text": [
"Well if you have a new kind of particle you will generally try to figure out how it would interact with other particles. If, for instance your new particle has an electric charge, a good way to see it would be trying to place it in a magnetic fie... | [] | [] | [
[]
] | |
2gcznn | Why does an electric charge make neon and other noble gases glow? Why the distinct colors? | askscience | http://www.reddit.com/r/askscience/comments/2gcznn/why_does_an_electric_charge_make_neon_and_other/ | {
"a_id": [
"ckhwe23"
],
"score": [
3
],
"text": [
"if an electron passes its kinetic energy to an atom within its ground state, the energy will be transformed into potential energy of the atom. The atom then wants to lose this additional energy which is only possible through emission of light. Th... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Hydrogen_spectral_series"
]
] | ||
5ageue | why does language change over generations / geography? i speak the same way my parents and grandparents do, so why do we speak differently from folks 200 years ago? also, in the us, why do people in different areas have different accents if we all came from england and spoke the same way? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ageue/eli5_why_does_language_change_over_generations/ | {
"a_id": [
"d9g8t8u",
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"d9g9xcv",
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"d9gj2t3"
],
"score": [
3,
4,
7,
22,
2,
6,
3,
2
],
"text": [
"We didn't all come from England. The French and Spanish also had interests in the US. We al... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Demography_of_the_United_States#/media/File:Census-2000-Data-Top-US-Ancestries-by-County.svg"
],
[],
[],
[],
[],
[
"http://www.macleans.ca/society/life/in-the-midst-of-the-canadian-vowel-shift/"
]
] | ||
3m8jnk | What would happen if you uniformly increased the pressure inside a perfect sphere of perfectly consistent material? | If the material of the sphere was perfectly consistent, such as that there are no areas weaker than others, would the sphere ever break? In what manner would it break?
I realise that an argument could be made for air pressure resulting in a rupture at a point where more force is exerted for a moment, so assume that th... | askscience | https://www.reddit.com/r/askscience/comments/3m8jnk/what_would_happen_if_you_uniformly_increased_the/ | {
"a_id": [
"cvdpt48"
],
"score": [
3
],
"text": [
"In a thought experiment like this where everything is perfect and smooth, and there is no outside interference from anything, what you're describing is termed an *unstable equilibrium*. The simplest analogy of this is [a ball on top of a hill.](_... | [] | [] | [
[
"http://inperc.com/wiki/images/archive/8/8f/20140404145959!Stable_unstable_equilibrium.png"
]
] | |
etpozv | Why was Rome able to replace the losses of 50,000 soldiers after Cannae, but the loss of three legions (20,000 men) meant the end of Rome's ambitions to conquer transalpine Gaul? | Didn't the Empire in 9 CE have larger HR than the Republic in 3rd century BCE? So why were they unable to replace a third of the losses suffered at Cannae? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/etpozv/why_was_rome_able_to_replace_the_losses_of_50000/ | {
"a_id": [
"ffiv5xp"
],
"score": [
30
],
"text": [
"The three legions lost were in Germany, not Gaul. Gaul had been conquered some fifty years earlier and the Gallic nobility was already in contention for senatorial positions. \n\nI don't think there's really a lot to say here. Regardless of the ... | [] | [] | [
[]
] | |
3ngt5s | why can someone get used to strong alcohol? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ngt5s/eli5_why_can_someone_get_used_to_strong_alcohol/ | {
"a_id": [
"cvnwr7e"
],
"score": [
2
],
"text": [
"You're cells have an organelle called the Smooth ER that detoxifies the cell from drugs and alcohol. The more often you ingest it the more efficient this organelle becomes at detoxifying. Since it detoxifies faster when you drink a lot you would ... | [] | [] | [
[]
] | ||
2rvvh5 | why does a brown ring form around the inside of my coffee cup after it has been sitting? the ring only forms on the mug at the top level of the liquid. why isn't the whole submerged part of the mug turn brown? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2rvvh5/eli5_why_does_a_brown_ring_form_around_the_inside/ | {
"a_id": [
"cnjqrt2",
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"score": [
12,
3
],
"text": [
"Capillary action draws the coffee at the edge a little bit up the wall of the mug. Then the water evaporates, leaving coffee residue.",
"People have actually studied this phenomon, its called the [Coffee Ring Effect.](_... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Coffee_ring_effect"
]
] | ||
1ib7z2 | What is switching the Gate of a transistor? | As far as i know the Gate needs a positive current to make the transistors silicon able to let electrons flow from -p to -n sides. But what switches the Gate? | askscience | http://www.reddit.com/r/askscience/comments/1ib7z2/what_is_switching_the_gate_of_a_transistor/ | {
"a_id": [
"cb2s7ut"
],
"score": [
7
],
"text": [
"The gates of transistors in modern digital ICs (MOSFETs) do not draw any current (apart from leakage). They are controlled by gate voltage not current. See [this video](_URL_0_) for an illustration of its working principle. Also [check this](_URL... | [] | [] | [
[
"http://www.youtube.com/watch?v=v7J_snw0Eng",
"http://www-g.eng.cam.ac.uk/mmg/teaching/linearcircuits/mosfet.html"
]
] | |
2wtjl4 | What happens at either end of the electromagnetic spectrum? | The electromagnetic spectrum is often [depicted](_URL_0_) as a continuous wave ranging from radio waves (long wavelengths, low frequency) to gamma rays (short wavelengths, high frequency). But what happens at either end of this spectrum when the waves at the radio wave end are so stretched out they are essentially hori... | askscience | http://www.reddit.com/r/askscience/comments/2wtjl4/what_happens_at_either_end_of_the_electromagnetic/ | {
"a_id": [
"cou0c1a"
],
"score": [
8
],
"text": [
"There is a misconception that the amplitude of an electromagnetic wave is a length in the transverse dimension. The amplitude is that of the electric and magnetic fields that make up the waves, as measured along its direction of propagation.\n\nT... | [] | [
"http://imagine.gsfc.nasa.gov/Images/science/EM_spectrum_compare_level1_lg.jpg"
] | [
[]
] | |
1fml8b | How practical is harvesting geothermal energy as a significant renewable energy source? | askscience | http://www.reddit.com/r/askscience/comments/1fml8b/how_practical_is_harvesting_geothermal_energy_as/ | {
"a_id": [
"cabq5yw"
],
"score": [
3
],
"text": [
"It really depends on where you are. [Iceland](_URL_0_) generates about a quarter of its electricity from geothermal - but it's also a really volcanically active region."
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Geothermal_power_in_Iceland"
]
] | ||
3j5ime | why are advertisers allowed to make text so small that is literally unreadable (on video), or talk so fast that no one can understand a word (radio/video) regarding "fine print" | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3j5ime/eli5_why_are_advertisers_allowed_to_make_text_so/ | {
"a_id": [
"cumgiiu"
],
"score": [
2
],
"text": [
"There are lots of laws around how you're allowed to present a product in an advertisement. This includes things you have to say about a product (side effects of a medicine etc). \n\nSometime those things they have to say make the product look wor... | [] | [] | [
[]
] | ||
185v3o | How did ancient governments and economies interact? (talking up to about ~0AD) | For this question, I'm basically thinking of civilizations like pyramid-era Egypt, Hittites, Sumerians, etc - but I'm also interested in ancient meso-american and asian civilizations.
I'm working on an ancient-world themed computer game that includes a basic economy and government simulation, and I'm stuck on how to m... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/185v3o/how_did_ancient_governments_and_economies/ | {
"a_id": [
"c8cfb2c"
],
"score": [
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"text": [
"I'm sorry you've not gotten many answers--it's a rather broad topic. I can only really help with a pretty narrow chunk of it, using biblical sources. While it's not a historical text in that the events described are necessarily accurate, it is ... | [] | [] | [
[]
] | |
8ry02u | why does mcdonalds have limited time flavors if they are popular? | Doesn't it make sense to keep it as a regular menu item if it's popular? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8ry02u/eli5_why_does_mcdonalds_have_limited_time_flavors/ | {
"a_id": [
"e0v19s9",
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"e0v1h4j",
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"score": [
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24,
12,
3,
2
],
"text": [
"People will buy more of it. If they think it’s getting discontinued, they will try to eat as much as they can before it’s gone. This makes McDonald’s get a ... | [] | [] | [
[],
[],
[],
[
"https://www.theawl.com/2011/11/a-conspiracy-of-hogs-the-mcrib-as-arbitrage/"
],
[]
] | |
90xhlk | Why did the Yongle Emperor move the capital to Beijing? And how associated was Beijing with the Yuan dynasty? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/90xhlk/why_did_the_yongle_emperor_move_the_capital_to/ | {
"a_id": [
"e2tx42t"
],
"score": [
15
],
"text": [
" > Why did the Yongle Emperor move the capital to Beijing? \n\nThere are several different reasons why the capital was relocated:\n\n* Yongle was sent to garrison Beijing in 1380 and lived there for more than two decades. Beijing was his base o... | [] | [] | [
[
"https://upload.wikimedia.org/wikipedia/commons/d/d9/Map_of_Cambaluk.jpg"
]
] | ||
27di95 | What's the history of the suburb? | When, where, and why did they first appear? How have they changed over the years? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/27di95/whats_the_history_of_the_suburb/ | {
"a_id": [
"chzrav4",
"chzu4kc",
"chzy2tu"
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"score": [
6,
7,
3
],
"text": [
"Which kind? Various kinds of suburbs exist in the developed world and I am not sure which kind you talk about. \n\nThere is the [tract housing](_URL_1_) type most typical in North America which is large... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Bus#Early_history",
"http://en.wikipedia.org/wiki/Tract_housing"
],
[
"http://www.anistor.gr/english/enback/2008_1e_Anistoriton.pdf"
],
[]
] | |
1bsw1s | We are all 'star stuff'. But are we all stuff from the just one star or many? | All of our molecules (beyond hydrogen and above helium?) were formed from processes within a star's core a long long time ago. My question is, would it be more correct to assume that all of my molecules came from the same star, or a plethora of stars? | askscience | http://www.reddit.com/r/askscience/comments/1bsw1s/we_are_all_star_stuff_but_are_we_all_stuff_from/ | {
"a_id": [
"c99scb9"
],
"score": [
44
],
"text": [
"The Sun is not a first generation star. Though I had been taught it was a fourth generation star, some poking about to verify that just now suggests there are credible arguments for the idea that it is a third generation star. In either case, ... | [] | [] | [
[]
] | |
5i3wit | why is martial law in a country such a big deal and important news all over the world? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5i3wit/eli5_why_is_martial_law_in_a_country_such_a_big/ | {
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"score": [
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2,
12,
3
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"text": [
"It is the military taking control, usually temporarily, but in some cases they don't relinquish control because it's easy to rule with force",
"It usually means the country is... | [] | [] | [
[],
[],
[],
[]
] | ||
5p6m9d | Is there a "universal speed limit" lower than the speed of light for an object of a given mass? | Let's say there's a 100kg object traveling through space. Obviously it can't reach the speed of light because it has mass. But since we know its mass, do we know how fast it *can* go according to the laws of physics? Or could it theoretically reach 99.9999999% of *c* but just never quite reach *c*? | askscience | https://www.reddit.com/r/askscience/comments/5p6m9d/is_there_a_universal_speed_limit_lower_than_the/ | {
"a_id": [
"dcozxwt",
"dcp06od"
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"score": [
39,
3
],
"text": [
"An object of non-zero mass can in principle attain any speed less than the speed of light. \n\nIn fact, since velocity has only a relative meaning, there are frames of reference in which an object of non-zero mass has what... | [] | [] | [
[],
[]
] | |
b2rr5r | How would Laws of Thermodynamics effect an Infinitely long row of Dominos? | askscience | https://www.reddit.com/r/askscience/comments/b2rr5r/how_would_laws_of_thermodynamics_effect_an/ | {
"a_id": [
"eiv9g7d"
],
"score": [
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],
"text": [
"In the initial set-up every domino is put in a state which is not it’s lowest energy state - that is, by standing on one edge it has some gravitational potential energy which the laws of thermodynamics ‘wants’ it to release (by falling over), but... | [] | [] | [
[]
] | ||
8tfacs | home come drinking salt water makes you vomit, but having something like chicken broth doesn’t? even though it has water and salt in it | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8tfacs/eli5_home_come_drinking_salt_water_makes_you/ | {
"a_id": [
"e171xm0",
"e171y5b"
],
"score": [
2,
2
],
"text": [
"Salt water? 🤔 Like drinking water from the ocean?",
"Pretty sure there's way more salt proportionally in ocean water (and other stuff) than even the saltiest chicken broth."
]
} | [] | [] | [
[],
[]
] | ||
2q8nu6 | Could you get PTSD from something that you didn't personally experience? | For example if a soldier come home and tells his brother about all the atrocities that he saw, could that brother get PTSD? | askscience | http://www.reddit.com/r/askscience/comments/2q8nu6/could_you_get_ptsd_from_something_that_you_didnt/ | {
"a_id": [
"cn4cgb4"
],
"score": [
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],
"text": [
"Yes, this is actually listed in the DSM-5 criteria for PTSD. The first criterion involves exposure to a traumatic event that causes intense fear, horror, or helplessness, and this event can be experienced directly, witnessed, or indirectly experi... | [] | [] | [
[
"http://www.ptsd.va.gov/professional/PTSD-overview/dsm5_criteria_ptsd.asp"
]
] | |
m7d8p | what is core strength? | Everyone seems to be preaching on about how important core strength is, but what the heck is it? Why is it so useful? In particular, why is it so important for balance? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/m7d8p/eli5_what_is_core_strength/ | {
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"score": [
6,
3,
2,
6,
3,
2
],
"text": [
"Put your finger on the middle of your waistline. It should be a few cm below your navel. If you go halfway through your body from there,... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Core_%28anatomy%29"
],
[],
[],
[
"http://en.wikipedia.org/wiki/Core_%28anatomy%29"
],
[]
] | |
f3nrzz | What does it mean for a body to be radioactive? | I hear about people like Marie Curie being buried in lead-lined coffins because of radioactivity. But what does it really mean for a dead body to be radioactive? How is it dangerous? And does it affect the decomp of the body? | askscience | https://www.reddit.com/r/askscience/comments/f3nrzz/what_does_it_mean_for_a_body_to_be_radioactive/ | {
"a_id": [
"fhkzsvo"
],
"score": [
12
],
"text": [
"\nMarie Curie and her contemporaries worked a lot with radioactive materials, in particular radium which is particularly nasty. In fact she and her husband Pierre didn't just work with it but more or less sacrificed their bodies to see what it d... | [] | [] | [
[]
] | |
379g8z | Are there any possible neolithic or prehistoric stories, myths, legends, events that pre-dated recorded history but was passed down orally long enough to finally be preserved in writing? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/379g8z/are_there_any_possible_neolithic_or_prehistoric/ | {
"a_id": [
"crkrll6",
"crl1u79"
],
"score": [
3,
3
],
"text": [
"Homer's stories, most Greek plays. One could argue those fit the bill.\n\nOff the top of my head, all those were orally preserved and now we can (and should) read them. I'm sure someone else will give a more in depth answer.... | [] | [] | [
[],
[
"http://theconversation.com/ancient-aboriginal-stories-preserve-history-of-a-rise-in-sea-level-36010"
]
] | ||
2k2sdp | In Egil's Saga, the protagonist buries a horde of silver in the ground and then kills the slave who helped him bury it. Are there other examples of deliberately buried treasure in Europe or the Americas? | Did any Caribbean pirates, for instance, really bury their treasure?
Given the similarities between Egil's Saga and many pirate myths, do we know if Robert Louis Stevenson was familiar with the Icelandic Sagas? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2k2sdp/in_egils_saga_the_protagonist_buries_a_horde_of/ | {
"a_id": [
"clhh8ch"
],
"score": [
6
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"text": [
"In Britain there have been numerous [Roman hoards](_URL_0_) discovered, one of the largest being the recently discovered [Seaton Hoard](_URL_2_). A good example of a more recent hoard is the [Cheapside Hoard](_URL_1_), discovered under a London C... | [] | [] | [
[
"http://en.wikipedia.org/wiki/List_of_Roman_hoards_in_Great_Britain",
"http://en.wikipedia.org/wiki/Cheapside_Hoard",
"http://www.rammuseum.org.uk/news/massive-roman-hoard-discovered-in-east-devon"
]
] | |
4f0r2u | what can your average u.s. citizen do to change congress? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4f0r2u/eli5_what_can_your_average_us_citizen_do_to/ | {
"a_id": [
"d24zibl",
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"score": [
23,
10,
3
],
"text": [
"One average citizen alone can do nothing. So the way to institute change is to join, or help create, an organization of *many* people. These people can vote for a different candidate, or raise money t... | [] | [] | [
[],
[],
[]
] | ||
o3u2h | what's happening when i exercise | Hello! I've recently taken up running, and I would love to understand how my body turns food energy (either in fat stores or what I've recently eaten) plus oxygen into forward momentum.
Could someone ELI5:
- How the body turns food or fat into fuel
- How the muscles use the fuel
- Where oxygen comes into the m... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/o3u2h/eli5_whats_happening_when_i_exercise/ | {
"a_id": [
"c3e6e3w"
],
"score": [
3
],
"text": [
"Okay! Here we go. Let's see.\n\nBody turning food or fat into fuel! Let's talk about food, and we'll get the fat part in there. That's digestion. Basics of digestion are that you chew up food and break it down, then it sits in your stomach a... | [] | [] | [
[]
] | |
11mzod | depositing a check with your mobile device? | I've seen ads for this service with many of the big banks and some credit unions. I'm totally baffled by it. How does taking a photo of a check enable you to then have money in your account? Its it remotely safe and secure? What are the benefits (if any) beyond convenience? What do you do with the check after you've d... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/11mzod/eli5_depositing_a_check_with_your_mobile_device/ | {
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"c6nv777",
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"score": [
3,
2,
4,
2
],
"text": [
"When you run a check at a teller, the teller just runs it through a scanner. The scanner interprets the information/numbers and electronically \"requests\" the money from the corre... | [] | [] | [
[],
[],
[],
[]
] | |
1qgyaf | If the surrounding temperature is higher than a surface's temperature, does radiation occur ? | I know that q_rad = C*(T_s^(4)-T_surr^(4)), but I'm not sure about what happens if the object's temperature is lower than the surrounding temperature, is it considered irradiation in this case ?? meaning that heat transfers into the object ? | askscience | http://www.reddit.com/r/askscience/comments/1qgyaf/if_the_surrounding_temperature_is_higher_than_a/ | {
"a_id": [
"cdcp0pi",
"cdct0ee",
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"score": [
21,
3,
3
],
"text": [
"That equation is about the *net* radiation from a surface. If the right side is positive, the surface has more radiation leaving it than it is absorbing. If it is negative, there is more radiation bei... | [] | [] | [
[],
[],
[]
] | |
8li2i3 | why humans get relief when scratching a bug bite and why the feeling of the relief doesn't last for long? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8li2i3/eli5_why_humans_get_relief_when_scratching_a_bug/ | {
"a_id": [
"dzfozxo"
],
"score": [
16
],
"text": [
"Bugs like mosquitoes release an enzyme in their saliva that dulls pain receptors and allows them a chance they feed undetected. Your body releases histamines to attack the foreign enzymes and a wheal or bump due to excess histamine. When you scr... | [] | [] | [
[]
] | ||
uadcl | what do ambassadors do? why are countries removing syria's ambassadors? | So obviously its a reaction to recent horrible events in Syria. But is this anything more than a token gesture or might the action of removing Syria's ambassadors have genuine results.
I don't really know what ambassadors do in the first place to comment on the effectiveness of kicking one of them out. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/uadcl/what_do_ambassadors_do_why_are_countries_removing/ | {
"a_id": [
"c4tnnhm",
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"score": [
7,
10,
2
],
"text": [
"Their job is to be the main contact between two countries. \nBefore satellites and phones, if one country wanted to negotiate a treaty or arrange trade, the two kings/presidents/whatever couldn't spen... | [] | [] | [
[],
[],
[]
] | |
8tbhxa | Do depressants change how “efficient” your sleep is? | For example, does something like NyQuil put someone in a “deeper” or “more efficient” sleep? Thanks! | askscience | https://www.reddit.com/r/askscience/comments/8tbhxa/do_depressants_change_how_efficient_your_sleep_is/ | {
"a_id": [
"e17k80d"
],
"score": [
3
],
"text": [
"So first let me say that studying sleep quality is very hard\n\nWe can measure how long you sleep for, how much time you spend in each stage, the presence of certain typical wave forms of electrical activity (at least is the accessible parts of t... | [] | [] | [
[]
] | |
6u0z21 | why in some countries people just wipe but in some countries they use a bidet and wipe? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6u0z21/eli5_why_in_some_countries_people_just_wipe_but/ | {
"a_id": [
"dlp28dz",
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"dlpagcj",
"dlpbchj",
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[],
[],
[],
[
"https://i.ytimg.com/vi/vIugBNFH0pw/maxresdefault.jpg"
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"www.amazon.com/dp/B003TPGPUW/ref=cm_sw_r_sms_awdb_ejfLzb2TJ40GQ"
],
[],
[
"https://www.theverge.com/2017/1/17/14306464/japanese-toilet-... | ||
11g4ng | How old is our ocean? | I mean, water evaporates and then it rains and so on but can we measure how old the ocean is? Is there any water left that would be considered prehistoric? | askscience | http://www.reddit.com/r/askscience/comments/11g4ng/how_old_is_our_ocean/ | {
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13,
2,
11,
2
],
"text": [
"the water in the oceans is the same water that had always been there. \n\nSure there are some reactions that break the water down or form new water, but for the most part it's th... | [] | [] | [
[],
[],
[],
[
"http://www.physicalgeography.net/fundamentals/8b.html"
]
] | |
2s5d8j | why does the lid start to cave in on a plastic container after i've microwaved it's contents? | Basically, when at work on nights I take a meal in a plastic takeaway container. When I remove it from the microwave, the lid begins to be sucked in. It compresses a fair bit before I eventually get the lid popped off on a corner, and the steam escapes.
Why does the heat/steam pull the lid in? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2s5d8j/eli5_why_does_the_lid_start_to_cave_in_on_a/ | {
"a_id": [
"cnmccuq"
],
"score": [
3
],
"text": [
"Is it possible that the plastic is softening a bit and that's why it's drooping? Also, this is the first I've heard of someone leaving the lid on when microwaving."
]
} | [] | [] | [
[]
] | |
208i2n | Why does water not lubricate our eyes? | Getting in water in the eyes serves to flush out impurities, but certain solutions lubricate them. What's the difference in the properties of contact solution v. water that makes this possible? | askscience | http://www.reddit.com/r/askscience/comments/208i2n/why_does_water_not_lubricate_our_eyes/ | {
"a_id": [
"cgdar1j"
],
"score": [
2
],
"text": [
"Water is *very* hydrophilic, whereas our tear film is a combination of an outer lipophilic layer that prevents evaporation, a larger middle portion that is primarily aqueous and therefore hydrophilic, and an inner layer that is actually both hydr... | [] | [] | [
[]
] | |
2rn6i3 | For most of history, most people have made their own clothes. Did people use this as a form of personal expression like we see in clothing today, or was clothing similar and generic among social groups? Do we have pictures? | I know this is a BROAD question, so I'm limiting it to clothing that we actually have photographs of. I'm also more curious about the clothing of peasants rather than gentry. Did people make clothing that would stand out or add "flair" to it? Or did people generally dress the same within the same social class? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2rn6i3/for_most_of_history_most_people_have_made_their/ | {
"a_id": [
"cnhifcw",
"cnj9r9m"
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"score": [
8,
2
],
"text": [
"The most obvious example of a group of people using clothing as a statement and form of personal expression are the *[sans-culotes](_URL_1_)* of the French Revolution, who neglected the fashionable knee-breeches of the nobil... | [] | [] | [
[
"http://books.google.com/books?id=SvxDQsze6r8C&lpg=PR1&dq=isbn%3A0691007829&pg=PA2#v=onepage&q&f=false",
"http://en.wikipedia.org/wiki/Sans-culottes#mediaviewer/File:Sans-culotte.jpg"
],
[
"http://en.wikipedia.org/wiki/Tartan#History",
"http://upload.wikimedia.org/wikipedia... | |
30vitn | why do i use my hands to talk? why is it more difficult for me to form my thoughts if i try to not use my hands? | I feel like a large amount of people use their hands to talk, including myself, and I don't know if this has any evolutionary background or just a weird habit that people pick up. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/30vitn/eli5why_do_i_use_my_hands_to_talk_why_is_it_more/ | {
"a_id": [
"cpw6q8y",
"cpw6zls",
"cpw7zy8"
],
"score": [
3,
2,
2
],
"text": [
"Communication largely was/is body language. For example understanding pointing is a good intelligence indicator. ",
"It helps put the emphasis on some word. \n\nYou will see that field reporters ten... | [] | [] | [
[],
[],
[]
] | |
ku3yq | how to overclock a cpu | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/ku3yq/eli5_how_to_overclock_a_cpu/ | {
"a_id": [
"c2n8o3t",
"c2n8o3t"
],
"score": [
4,
4
],
"text": [
"If you're looking to overclock your laptop or a prebuilt desktop system from Dell, chances are that the motherboard's BIOS doesn't support it. In order to overclock a CPU, you'll likely need to have a higher-end motherboard... | [] | [] | [
[],
[]
] | ||
3u3sjo | Were medieval royal women ever flat out ugly? | Queens and princesses in medieval Europe are always described as being exceptionally beautiful. Portraits and effigies were usually done up to show them as gorgeous.
However, do we have any documentation that any of them were actually downright ugly? I know there were rumors that Anne Boleyn was deformed, but those ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3u3sjo/were_medieval_royal_women_ever_flat_out_ugly/ | {
"a_id": [
"cxbmfj5"
],
"score": [
3
],
"text": [
"Not medieval but Catherine of Braganza, the wife of Charles II of England was described rather unflatteringly by members of his court as looking like a large bat when she first arrived in England. While other descriptions of her do tend to paint ... | [] | [] | [
[]
] | |
ipl21 | I'm in a bad mood. Physiologically speaking, what's going on? Are there well-understood neuro-biological factors keeping me from enjoying my work? Is there a theory about the evolutionary benefits of being surly? | I swear: not a novelty account.
Is there a good understanding of mood other than aggregate chemical reactions?
What are the results of long-term studies on positive vs negative outlook?
Am I slowly causing health risks by being dour all the time?
Specifically: What is going on, right now, while angry and frustra... | askscience | http://www.reddit.com/r/askscience/comments/ipl21/im_in_a_bad_mood_physiologically_speaking_whats/ | {
"a_id": [
"c25nq0a",
"c25pnh3"
],
"score": [
7,
2
],
"text": [
"First: your question and subquestions are all buzzwords and things that don't belong. Evolutionarily whatever is not required. Physiologically is pretty hard to answer (individual differences). Neuro-biological blah blahs. \... | [] | [] | [
[],
[
"http://brainblogger.com/2011/06/14/genetic-link-to-depression-identified/",
"http://brainblogger.com/2011/07/11/is-happiness-always-a-good-thing/"
]
] | |
1zf8pk | how come astronauts would burn up in atmosphere upon re-entry from space without a landing craft but felix baumgartner was able to jump from the edge of space without getting singed? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1zf8pk/eli5_how_come_astronauts_would_burn_up_in/ | {
"a_id": [
"cft4fwa",
"cft4gb9",
"cft4gnd",
"cft4h03"
],
"score": [
31,
2,
10,
15
],
"text": [
"To borrow [from xkcd](_URL_0_):\n\nSpace is not like [this](_URL_2_) \nRather, it is like [this](_URL_1_) \n\nSpace is not very far away, and falling from it is survivable with... | [] | [] | [
[
"http://what-if.xkcd.com/58/",
"http://what-if.xkcd.com/imgs/a/58/orbit_wide.png",
"http://what-if.xkcd.com/imgs/a/58/orbit_tall.png"
],
[],
[],
[]
] | ||
5q3pbj | How does the depletion region form in semiconductors? | I really have a hard time understanding the process fully.
My understanding so far:
I have a 'p' doped part and an 'n' doped part. I touch them together. Both parts are neutral (in terms of charge).
Diffusion starts - free electrons go into the 'p' region and holes go into the 'n' region - this creates diffusion cur... | askscience | https://www.reddit.com/r/askscience/comments/5q3pbj/how_does_the_depletion_region_form_in/ | {
"a_id": [
"dcwnonx"
],
"score": [
5
],
"text": [
"A semiconductor is, as the name might suggest, not a very good conductor. This is because it lacks free charge carriers, as the electrons are all bound in the crystal lattice and it takes some energy to tear them out of that lattice to form a cur... | [] | [] | [
[]
] | |
58dsla | How fast is lightning in a vacuum? | Been wondering if it's the same as the speed of light, I would assume not but thought I'd ask. | askscience | https://www.reddit.com/r/askscience/comments/58dsla/how_fast_is_lightning_in_a_vacuum/ | {
"a_id": [
"d901d4m"
],
"score": [
9
],
"text": [
"Lightning doesn't propagate in a vacuum.\n\nIn any case, lightning is the phenomenon of a current of charged particles propagating through a thin conducting channel within an otherwise non-conducting medium. Since the particles moving around have... | [] | [] | [
[]
] | |
16jw4k | how do world leaders call each other? | I am curious, as how do they reach to each other even though sometimes they are on the move. Also, how do they talk if they do not speak the same language? Do they have instant translators? What if it is a sensitive topic, what happens then?
Sorry, if this is a lot of questions in the same thread. It's OK if you choos... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/16jw4k/how_do_world_leaders_call_each_other/ | {
"a_id": [
"c7wrdc5",
"c7wsovz",
"c7wt9rh",
"c7x2spd"
],
"score": [
9,
25,
27,
3
],
"text": [
"re: Language differences, they have private interpreters (\"instant translators\"). These are people vetted by the country's intelligence service or military so they can be trust... | [] | [] | [
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Barack_Obama",
"http://en.wikipedia.org/wiki/International_English",
"http://en.wikipedia.org/wiki/List_of_current_heads_of_state_and_government",
"http://i.imgur.com/7rCPR.jpg"
]
] |
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