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 |
|---|---|---|---|---|---|---|---|---|---|
l5f2t | Would a child from 10,000 years ago fit in if raised from birth in today's society, 100,000 years? How far back could we go before we have a significant degradation of cognitive ability? | askscience | http://www.reddit.com/r/askscience/comments/l5f2t/would_a_child_from_10000_years_ago_fit_in_if/ | {
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... | [] | [] | [
[],
[],
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[
"http://en.wikipedia.org/wiki/The_Ugly_Little_Boy"
],
[],
[],
[
"http://main.zerotothree.org/site/PageServer?pagename=ter_key_brainFAQ#nutrition"
],
[],
[
"http://www.imdb.com/title/tt0756683/"
],
[
"http://en.wikipedia.org/wiki/Bicameralism_(psychology)"
],
... | ||
4a6f8o | why can't we just plant the gros michel banana again? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4a6f8o/eli5_why_cant_we_just_plant_the_gros_michel/ | {
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"text": [
"Because the banana plants aren't derived from seeds but bulbs of the banana plant.\n\nThere are still plantations that grows that type of banana but not on a large scale. ",
"Why would we want to?\n... | [] | [] | [
[],
[],
[]
] | ||
14jtfs | Aztec religion - Was there an actual name for it? What were their beliefs/rites/festivals about? Were some gods worshiped more than others? | It's a religion that you never hear about, and the questions just formed in my head.
A last few questions, if I may. What were the tenets or 'commandments' that they had to live by? Was the religion strictly adhered to, or were most people religious only nominally?
Thanks in advance! | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/14jtfs/aztec_religion_was_there_an_actual_name_for_it/ | {
"a_id": [
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"text": [
"This is a very broad question, but a good start to learn more is \"The Lost History of the Aztec and Maya\" by Charles Phillips. He uses ancient primary sources to summerize MesoAmerican l... | [] | [] | [
[],
[
"http://books.google.com/books?id=IqecX148zLsC&printsec=frontcover&dq=aztec+religion&hl=en&sa=X&ei=Y-LEUICsD4Tq9ASlsYGYCw&ved=0CC0Q6AEwAA",
"http://books.google.com/books?id=IIw5q1RTa2wC&printsec=frontcover&dq=daily+life+of+the+aztecs&hl=en&sa=X&ei=0OLEULm... | |
a8foqg | what is the difference between an architect and an architectural enginner? | Is there even any difference? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a8foqg/eli5_what_is_the_difference_between_an_architect/ | {
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"score": [
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"text": [
"An architect says “Wouldn’t it be cool if my building looked like *THIS*?”\n\nAnd the engineer says, “Yeah, here’s how to make it not fall over.”",
"Architectural engineers ha... | [] | [] | [
[],
[],
[],
[]
] | |
ba3rtx | why do men joke about their penises so much? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ba3rtx/eli5_why_do_men_joke_about_their_penises_so_much/ | {
"a_id": [
"ek8s4g0"
],
"score": [
2
],
"text": [
"Because it's hard not to.\n\nHeyo\n\nPenis jokes are just very basic humour, low hanging fruit. It's universal, everybody past puberty gets it. But they're not classy, so don't whip them out whenever. \n\nYou can tell a penis joke once in a while... | [] | [] | [
[]
] | ||
2tos6o | If all but one species of dog died out, could we theoretically recreate all of those lost species by selective breeding? | Just how all dogs derive from wolves, given enough time, could all the known dog species be recreated from pugs? Or corgis? | askscience | http://www.reddit.com/r/askscience/comments/2tos6o/if_all_but_one_species_of_dog_died_out_could_we/ | {
"a_id": [
"co1ciwj",
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"score": [
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],
"text": [
"It's very likely that with time you could create breeds that look like very much like our current breeds, but they would not have the same genetics as our current breeds ... (Meaning you might not be able to distinguish your... | [] | [] | [
[],
[]
] | |
3zeo7j | why do parliament impose sentence ranges for crimes instead of leaving it up to the judge and case law? | Tort law is solely made up of case law developed over the centuries and so far it has worked really well. Most of the decisions seem equitabe, fair and just. This is probably because judges are given near total discretion and are therefore likely to consider total circumstances and mete out equitable justice.
I dont... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3zeo7j/eli5_why_do_parliament_impose_sentence_ranges_for/ | {
"a_id": [
"cylh0q0"
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"score": [
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"text": [
"It's important to have some degree of uniformity in sentencing. Of course every case and every criminal is different, but some guidelines are necessary.\n\nIn County A you get arrested for possessing heroine and the judge happens to think drug la... | [] | [] | [
[]
] | |
anre9x | why is it easy to hear someone talking outside when you’re in a car but hard to hear someone inside talking when you’re outside the car? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/anre9x/eli5_why_is_it_easy_to_hear_someone_talking/ | {
"a_id": [
"efve8yn",
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"score": [
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3
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"text": [
"I’d assume when you’re outside you’re battling more things to be heard (wind/weather/cars) so you naturally talk louder at a point you can be heard from within a nearby vehicle\n\nWhen you’re inside a car your windows and s... | [] | [] | [
[],
[]
] | ||
cm5yju | why do our testicles hang lower when warm and move closer to the penis when cold? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cm5yju/eli5_why_do_our_testicles_hang_lower_when_warm/ | {
"a_id": [
"ew06ipx",
"ew06np5"
],
"score": [
8,
10
],
"text": [
"Temperature adjustment. I believe sperm are very sensitive to temperature, so they hang lower to cool off and retract to stay warm!",
"Balls are meant to stay at temperatures cooler than the rest of the body. Sperm prod... | [] | [] | [
[],
[]
] | ||
1y62mm | Monday Mysteries | Crime and Punishment | **Previously:**
- [New and controversial ideas in your field](_URL_28_)
- [Meetings between historical figures](_URL_15_)
- [Historical one-offs](_URL_10_)
- [Historical historical misconceptions](_URL_29_)
- [Secret societies and cults](_URL_23_)
- [Astonishing individuals](_URL_25_)
- [Suggestion thread](_URL_32_)
-... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1y62mm/monday_mysteries_crime_and_punishment/ | {
"a_id": [
"cfho8tq",
"cfi5op9",
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"score": [
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11,
4
],
"text": [
"The most famous painting in the world, the [Mona Lisa](_URL_3_), was involved in the most famous theft in modern art history, the theft of 1911 (and its implications were quite humorous). \n\nOn Augus... | [] | [
"http://www.reddit.com/r/AskHistorians/comments/1f57b0/monday_mysteries_fakes_frauds_and_flimflammery_in/",
"http://www.reddit.com/r/AskHistorians/comments/1icd0x/monday_mysteries_leastaccurate_historical_books/",
"http://www.reddit.com/r/AskHistorians/comments/1ujf57/monday_mysteries_construction_conundrums/",... | [
[
"http://en.wikipedia.org/wiki/Vincenzo_Peruggia",
"http://en.wikipedia.org/wiki/Pablo_Picasso",
"http://en.wikipedia.org/wiki/Les_Demoiselles_d%27Avignon",
"http://en.wikipedia.org/wiki/Mona_Lisa",
"http://en.wikipedia.org/wiki/Guillaume_Apollinaire"
],
[
"http://socialiststories.net/l... | |
45lgli | what about a glass ketchup bottle makes it so difficult to easily pour? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/45lgli/eli5_what_about_a_glass_ketchup_bottle_makes_it/ | {
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"text": [
"Ketchup is sticky and viscous (thick). It flows slowly, and a glass bottle doesn't let y... | [] | [] | [
[],
[],
[],
[
"http://youtu.be/KB43fM_ozKQ"
],
[
"https://www.youtube.com/watch?v=KB43fM_ozKQ"
],
[],
[],
[]
] | ||
1tez4o | elf on the shelf | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1tez4o/eli5_elf_on_the_shelf/ | {
"a_id": [
"ce78uj0",
"ce79od8"
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"score": [
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3
],
"text": [
"It's an elf doll that comes with a story. In the story it explains that each Elf is given magical powers once its family names it. Your children then name it. Once that is done, only grown-ups can touch the Elf or it will... | [] | [] | [
[],
[]
] | ||
5vejzy | why do products say "may contain eggs"? they either do or don't contain eggs, right? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5vejzy/eli5_why_do_products_say_may_contain_eggs_they/ | {
"a_id": [
"de1fn36",
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"score": [
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2
],
"text": [
"My understanding is this. It's a liability thing. If at some point during the manufacture or packaging of their product it comes in contact with eggs or egg residue, and someone then has an allergic reaction to it, then the ... | [] | [] | [
[],
[]
] | ||
11dmf2 | With a laser pen, why can I see the dot of light but not a beam behind it? | I was wondering this today when I was reading about people shining lights into the cockpit of aeroplanes. Can anyone explain? | askscience | http://www.reddit.com/r/askscience/comments/11dmf2/with_a_laser_pen_why_can_i_see_the_dot_of_light/ | {
"a_id": [
"c6liyhw"
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"score": [
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],
"text": [
"You can only see light that directly enters your eye. The beam of the laser isn't pointed at you, so none of the photons are hitting your retina. The dot, however, is a results of photons from the beam reflecting/scattering off of some object, ... | [] | [] | [
[]
] | |
fj2pz8 | why does fine powder (like flour or powder milk) mixes evenly when stirred in cold water, but not in hot water (where the mixture becomes lumpy)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fj2pz8/eli5_why_does_fine_powder_like_flour_or_powder/ | {
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"text": [
"Most powders dissolve better in hot water because the molecules of water have more energy and are \"bumping\" into the powder molecules. Hot water molecules have more energy and move more than cold mol... | [] | [] | [
[],
[],
[]
] | ||
cvs72n | is cancer just bad luck? for instance how can someone that never smoked get lung cancer, but another one that does never gets it? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cvs72n/eli5_is_cancer_just_bad_luck_for_instance_how_can/ | {
"a_id": [
"ey61bqp",
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],
"score": [
2,
6
],
"text": [
"Edit. \"Most cases of lung cancer are not related to inherited genetic changes\" \n_URL_0_\nI.e. unlike some other cancers, your genes do not make you more likely have lung cancer. I have heard that certain genes increase ch... | [] | [] | [
[
"https://ghr.nlm.nih.gov/condition/lung-cancer#inheritance"
],
[]
] | |
6irefs | Who was filming WW2 and why? | I've been watching the BBC's The World at War and have been blown away by all the first hand footage of the various events (at least I'm pretty sure it's first hand?). Was it common practice to send along film crews at the time? What were the difficulties in using 40s film equipment in those scenarios? What purpose did... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6irefs/who_was_filming_ww2_and_why/ | {
"a_id": [
"dj8rp17",
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"score": [
8,
2
],
"text": [
"In the United States at least, the US government was backing it. Hollywood directors such as John Huston and John Ford volunteered for service with the military (Army, and Navy, respectively), where their talents were put to... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/6irefs/who_was_filming_ww2_and_why/dj8xrhg/",
"https://archive.org/stream/americanlegionma766amer#page/n0/mode/2up"
],
[
"https://i.imgur.com/NG29BHw.jpg",
"https://upload.wikimedia.org/wikipedia/commons/4/46/George_malins_z_aeroskopem_St_Eloi.j... | |
7gufle | how ducks not freeze in cold water in winter | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7gufle/eli5how_ducks_not_freeze_in_cold_water_in_winter/ | {
"a_id": [
"dqlr76j",
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"score": [
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4
],
"text": [
"They are surrounded by a thick layer of fat under the skin, and an insulating layer of downy feathers over the skin. So they are highly insulated.",
"Ducks have very little muscle in their feet, mainly tendons. This mean... | [] | [] | [
[],
[]
] | ||
jh13l | health care individual mandate vs. car insurance mandate | The government says I have to have car insurance. Why can't they tell me I have to have health insurance. And doesn't it make people healthier somehow??? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/jh13l/health_care_individual_mandate_vs_car_insurance/ | {
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"text": [
"It seems like you're trying to make a political point, rather than asking a question, but requiring car drivers to have car insurance is categorically different from requiring *all... | [] | [] | [
[],
[],
[],
[]
] | |
ha9d0 | Why do people here not think that B12 gives you more energy? | Is it because of lack of studies or proof? Does it not make sense biologically?
I'm sure it could be the placebo effect but I wasn't really expecting anything. I take Centrum Performance vitamins (which has loads of B12) and it's a night and day difference for me. I feel like I *want* to work and do something.
I know... | askscience | http://www.reddit.com/r/askscience/comments/ha9d0/why_do_people_here_not_think_that_b12_gives_you/ | {
"a_id": [
"c1tsvv6",
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"score": [
4,
3,
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],
"text": [
"It might be one of the other B vitamins, especially B3 (niacin), effecting you, rather than the B12 (cyanocobalamin) _URL_0_ Some people take B3 and get a \"niacin flush\" or feel hyper like they've ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Niacin"
],
[],
[]
] | |
1nc7dz | if my pet has fleas, how come they don't infest me too? | Is it a hair or skin difference or? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1nc7dz/eli5_if_my_pet_has_fleas_how_come_they_dont/ | {
"a_id": [
"cch8zac",
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],
"score": [
2,
2
],
"text": [
"They can, but generally they prefer certain types of animals over us, just like it's possible to give a dog head lice, but unlikely.",
"Well, they can and do given enough time. But chances are you bath regularly, and you... | [] | [] | [
[],
[]
] | |
u422k | How closely related (in time and in substance) are the myths of the ancient world? | An interesting concept I came across when studying philosophy is Plato's ideal Republic and how it is analogous in many ways to the Hindu caste system. Similarly, the polytheism of Greece, Rome, and Egypt all attributed acts to various gods with different names, but seemingly the same powers (from what I understand).
... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/u422k/how_closely_related_in_time_and_in_substance_are/ | {
"a_id": [
"c4s6c5a",
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"score": [
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4
],
"text": [
"Better answers are coming, but I'll try and point you in the right direction for some information.\n\nAs far as Northern India, Greece, and Rome are concerned, they're descendent from a group of people known as \"proto indo-... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Proto-Indo-Europeans"
],
[]
] | |
2z34ld | How were memorials designed for world wars? | one of my professors once told us that making memorials for large scale losses was difficult because they just ended up being ruined by the sense of tragedy. I don't really understand what he meant and he just dropped it in passing and didnt go back to it. Does any one know about how memorials were designed for big war... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2z34ld/how_were_memorials_designed_for_world_wars/ | {
"a_id": [
"cpf9cvg"
],
"score": [
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],
"text": [
"Oh my gosh! This is my *thing!* I have some things already written on it that I sent to a friend recently, and I'll do my best to amend them to reflect your teacher's points and your question.\n\nYour teacher was probably referring to a notion s... | [] | [] | [
[]
] | |
1wka4z | atomic and hydrogen bombs in space. | If a hydrogen or atomic bomb was detonated in space, how would the explosion compare to an explosion here on earth. Would gravity allow the blast to expand or will it compress it? Is it possible to make a tiny human- made black hole from an explosion? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1wka4z/eli5_atomic_and_hydrogen_bombs_in_space/ | {
"a_id": [
"cf2w0w1"
],
"score": [
3
],
"text": [
"The main difference between the effects of an atomic bomb detonated in space and that on the ground are not related to gravity, but are related to the fact that the bomb is going off without an atmosphere (air) around it. When a bomb goes off, a ... | [] | [] | [
[]
] | |
3kbnsj | what ever happened to all those cash for gold companies? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3kbnsj/eli5_what_ever_happened_to_all_those_cash_for/ | {
"a_id": [
"cuw8bw0"
],
"score": [
3
],
"text": [
"_URL_0_\n\nThe value of gold was climbing until 2012, when the market suddenly trended downwards, and it's predicted to get worse. Since gold isn't as valuable anymore, there's less incentive to run a business that collects it. \n"
]
} | [] | [] | [
[
"http://www.macrotrends.net/1333/historical-gold-prices-100-year-chart"
]
] | ||
8pwq31 | why is it easier to gain fat than to loose it? our body reacts when we eat too much, why dosen't it do the same when we try to loose fat? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8pwq31/eli5_why_is_it_easier_to_gain_fat_than_to_loose/ | {
"a_id": [
"e0eme0s",
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],
"score": [
6,
5,
2
],
"text": [
"It used to be harder to gain fat when we used to live in caves and had to run from predators on a regular basis. ",
"Fat actually has a purpose. It's a reserve of nutrients for when food is hard to ... | [] | [] | [
[],
[],
[]
] | ||
7dlkbg | what are you thinking before developing language ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7dlkbg/eli5_what_are_you_thinking_before_developing/ | {
"a_id": [
"dpymkfz"
],
"score": [
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],
"text": [
"Babies/infants learn through patterns, noises, and repeated stimuli, all by closely watching their environment. Babies of only a few days old understand depth perception and a few months in, they can count and understand so-called “impossible eve... | [] | [] | [
[]
] | ||
4gl0gc | what would time dilation feel like? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4gl0gc/eli5what_would_time_dilation_feel_like/ | {
"a_id": [
"d2iguvl",
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"score": [
3,
3
],
"text": [
"You wouldn't perceive time slowing down. That is the entire basis of relativity, that no matter what constant speed you move at, light moves at the same speed relative to you. This is the basis of all the math, which came to... | [] | [] | [
[],
[]
] | ||
4c13cq | how the us justice system handle rape accusations? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4c13cq/eli5how_the_us_justice_system_handle_rape/ | {
"a_id": [
"d1e656i"
],
"score": [
2
],
"text": [
"Well it depends. \n\nIf you are a politician, then the accuser has their life turned upside down and is often accused of being a slut (even by the politician's wife). Or if you are a beloved famous personality then you are simply ignored unless e... | [] | [] | [
[]
] | ||
guubk | Does a fetus feel pain? | Or is it just "sleeping" (I don't know what the correct term is) too heavily? | askscience | http://www.reddit.com/r/askscience/comments/guubk/does_a_fetus_feel_pain/ | {
"a_id": [
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"score": [
2,
2
],
"text": [
"It is awake and moving quite a bit by the second trimester. There's no reason it wouldn't once the nociception system is established.",
"_URL_0_\n > Evidence regarding the capacity for fetal pain is limited but indicates... | [] | [] | [
[],
[
"http://jama.ama-assn.org/content/294/8/947.long",
"http://www.ncbi.nlm.nih.gov/pubmed/19112406"
]
] | |
4jzeey | does the time warner cable/charter merger violate anti-trust laws? | The [merger](_URL_0_) certainly seems like it should violate established anti-trust laws. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4jzeey/eli5_does_the_time_warner_cablecharter_merger/ | {
"a_id": [
"d3avk53"
],
"score": [
7
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"text": [
"Anti-trust laws give the Department of Justice the authority to make that call. It is decided case-by-case by the courts.\n\nThe Antitrust Division of the Department of Justice did indeed file a lawsuit arguing against the merger. In court, \"N... | [] | [
"http://money.cnn.com/2016/05/18/media/time-warner-cable-charter/"
] | [
[]
] | |
6oel4q | What is the theoretical maximum to how many liters/second over a region of rain can fall during a storm? | askscience | https://www.reddit.com/r/askscience/comments/6oel4q/what_is_the_theoretical_maximum_to_how_many/ | {
"a_id": [
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],
"text": [
"There is a theoretical limit (though that varies depending on the temp other atmospheric conditions). And that theoretical limit is based on the density of water and laws of buoyancy as they pertain to water. Its a pretty complex calculation. "
... | [] | [] | [
[]
] | ||
1nrf1c | What exactly does your body do to your brain when you have ALS? | The answers found through the internet machine were a little past my understanding. Can you answer this question in simplified terms for me? | askscience | http://www.reddit.com/r/askscience/comments/1nrf1c/what_exactly_does_your_body_do_to_your_brain_when/ | {
"a_id": [
"cclh7ty",
"ccljwjl"
],
"score": [
3,
3
],
"text": [
"Your motor neurons die in that disease. This subset of nerve cells are what's used for movement throughout your body.\n\nFor the most part, not a lot happens in the brain itself in ALS, so although primary motor neurons in ... | [] | [] | [
[],
[]
] | |
x0zkk | the story of the soviet union | I know the basics so a nice in depth explanation would be nice. anyone? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/x0zkk/eli5_the_story_of_the_soviet_union/ | {
"a_id": [
"c5ial40",
"c5ihjcm"
],
"score": [
9,
2
],
"text": [
"This is one of my favorite topics, because it allows me to expand on a couple points.\n\nThe first is exactly how bad things were in Tsarist Russia. Russia was one of the last honest to god Feudal societies on Earth. They ha... | [] | [] | [
[],
[
"http://www.youtube.com/watch?v=hWTFG3J1CP8"
]
] | |
1zy422 | How were epic poems interpreted in their time? | For example, would an educated Greek aristocrat see Odysseus as a universal symbol or is that strictly a modern interpretation? Why were these myths considered so valuable by ancient Athenians?
As a modern reader, it's hard for me to see the importance of the Descent of Inanna, Epic of Gilgamesh, Beowulf, and similar ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1zy422/how_were_epic_poems_interpreted_in_their_time/ | {
"a_id": [
"cfy3wjx"
],
"score": [
9
],
"text": [
"I can't speak for any of the Classical Epics but Beowulf was certainly more than pure entertainment. Although written in the eighth century (NB There is much disagreement over this) the practices and events in the epic pre-date it by far. Arguabl... | [] | [] | [
[]
] | |
akilxc | What is the academic consensus on Stephen Turnbull's claim that Ninjas never existed? | In 2015, Turnbull published an article ("The Ninja: An Invented Tradition?") that seemed to be a repudiation of his earlier work on ninjas. Here, he argues that the class of ninjas from Igo and Koga as stealthy mercenaries simply didn't exist as a separate category or class, even if stealth tactics were used in war.
... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/akilxc/what_is_the_academic_consensus_on_stephen/ | {
"a_id": [
"ef66gf5",
"ef8st4w"
],
"score": [
4,
3
],
"text": [
"Turnbull's work on the ninjas, and their historicity, has come up here more than once before, While you're waiting for fresh answers to your question, you might like to review [this earlier thread](_URL_0_), led by u/Niented... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/8o2r9k/what_exactly_is_a_ninja_and_what_was_it_like/"
],
[
"https://www.reddit.com/r/AskHistorians/comments/6d85zn/were_highly_trained_special_operations_groups/di100wl/",
"https://www.reddit.com/r/AskHistorians/comments/6lst8l/how_much_does_the_typ... | |
5y1llp | Are there any places on the planet that have had massive issues due to rising sea levels, or has it not got to that point yet? | Thanks for all the support everyone, makes you wonder why people don't believe in this stuff | askscience | https://www.reddit.com/r/askscience/comments/5y1llp/are_there_any_places_on_the_planet_that_have_had/ | {
"a_id": [
"den4l1t"
],
"score": [
6
],
"text": [
"[The Maldives in the Indian Ocean.](_URL_0_) 80% of the country is less than 1 meter above mean sea level. Very small changes in mean sea level mean big areas of inundation."
]
} | [] | [] | [
[
"http://www.climatehotmap.org/global-warming-locations/republic-of-maldives.html"
]
] | |
5xh63r | I'm looking for more information on carthaginian political factions during the first punic war (reading recommendations)? | Not much attention is ever given to the Carthaginians during the punic wars in popular sources. I know there is a lot more information about the romans and polybius won't have had much on the carthaginians but there must be something. In the first punic war, an ostensibly peace loving faction pulls back troops rather t... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5xh63r/im_looking_for_more_information_on_carthaginian/ | {
"a_id": [
"deiw41u"
],
"score": [
3
],
"text": [
"There isn't much good material on the Carthaginians which makes writing about them a challenge. The only sources we have for them are Roman and Sicilian, and they both hated Carthage. A book you might be interested is *Carthage Must Be Destroyed*... | [] | [] | [
[]
] | |
5c6bs8 | why do certain animals mainly appear when it begins to rain? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5c6bs8/eli5_why_do_certain_animals_mainly_appear_when_it/ | {
"a_id": [
"d9u0l2p"
],
"score": [
2
],
"text": [
"Can you give an example of the types of animals you're thinking of?\n\nOften snails and such come out because it's wet and they can range further without drying out.\n\nWorms come out for similar reasons and because their burrows sometimes fill w... | [] | [] | [
[]
] | ||
afxc7a | how did we come to the conclusion that gravity has the same speed as light? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/afxc7a/eli5_how_did_we_come_to_the_conclusion_that/ | {
"a_id": [
"ee1zcvy"
],
"score": [
10
],
"text": [
"We measured it. \n\nBy which I mean we measured both the gravity and light coming off a stellar collision and found that the difference could be explained by the vacuum of space being very slightly imperfect so the light wasn't going at the spee... | [] | [] | [
[]
] | ||
82nq3t | why does foam act like a solid when it is made of just liquid and gas? | For example, in a bath you can add one liquid (bubble bath) to another liquid (water) and it creates a foam. You can then pick up a handful of that foam and blow on it which causes the foam to fragment like it was a solid... but it's not a solid, it's still just a liquid! ELI5, please? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/82nq3t/eli5_why_does_foam_act_like_a_solid_when_it_is/ | {
"a_id": [
"dvbf917",
"dvbfq5s"
],
"score": [
12,
6
],
"text": [
"A balloon behaves like a solid ball, but it's mostly air. Foam is just a big pile of tiny balloons made of soap.",
"Surface tension, the molecules on the outside of the bubble line up (much like a solid) and pull on the... | [] | [] | [
[],
[]
] | |
2osy6j | If the colors we see are just the wave length of light that is not absorbed by the object, int he absence of light is everything the same color? | a blue shirt is blue because it does not absorber blue light and instead reflects it.
If we put this blue shirt in a completely sealed environment and shot all colors of light at it other than blue ( if it were possible) what color would it be? Does this vary from color to color?
| askscience | http://www.reddit.com/r/askscience/comments/2osy6j/if_the_colors_we_see_are_just_the_wave_length_of/ | {
"a_id": [
"cmqk9cw",
"cmqv1lo"
],
"score": [
4,
2
],
"text": [
"It'd look black under that light. The lack of color/light is black. It means your eyes/detector isn't getting any signal.\n\nAlso, real shirts aren't perfect absorbers/diffuse reflectors, you'd still \"see\" the shirt, it wo... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Impossible_color"
]
] | |
4145yj | why is apple the most valuable company in the world? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4145yj/eli5why_is_apple_the_most_valuable_company_in_the/ | {
"a_id": [
"cyzhgu9"
],
"score": [
26
],
"text": [
"You reap extremely high profits when you charge $3,000 for $500 of hardware and people keep buying it because it's pretty and white.\n\n\nI'll be down at the bottom in a few minutes for my factual, but unpopular opinion.\n\nRegardless, if I coul... | [] | [] | [
[]
] | ||
21h4ik | Did Arab expansion into the Mediterranean in the 8th and 9th century cause the central authority of the Carolingians to dissolve into a fragmented and feudal society? | Belgian historian, Henri Pirenne asserted that early Frankish barbarians under the Merovingians actually maintained the Roman customs, laws, and institutions that allowed the Western Roman empire to continue to maintain its influence over trade in the mediterranean. Pirenne further asserts that Arab expansion in the 9t... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/21h4ik/did_arab_expansion_into_the_mediterranean_in_the/ | {
"a_id": [
"cgd18kn"
],
"score": [
3
],
"text": [
"Pirenne is at this point incredibly outdated (he died in 1935 after all) and aside from the standard \"Pirenne was wrong\" moment in contemporary works (and virtually every economic history has one) is largely ignored.\n\nThe idea that the Caroli... | [] | [] | [
[]
] | |
9n4gpz | has anyone thought to send a drone to scout north sentinel island? what are the ongoing studies conducted on the sentinelese if there are any? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9n4gpz/eli5_has_anyone_thought_to_send_a_drone_to_scout/ | {
"a_id": [
"e7jjuy6",
"e7jkn7u"
],
"score": [
3,
3
],
"text": [
"The Indian Government recognizes the Sentinelese's desire to be left alone. They don't even try to prosecute them on the occasions they have killed trespassers to the island. \n\n",
"Sentinel island now is closed for a... | [] | [] | [
[],
[]
] | ||
1reh3w | what is fire actually doing to wood/paper/gasoline, etc? | I'm watching wood burn. What is actually happening to it? What is taking place in the chemistry between the fire and the object and why do burned things eventually disintegrate? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1reh3w/eli5_what_is_fire_actually_doing_to/ | {
"a_id": [
"cdmfube"
],
"score": [
5
],
"text": [
"The chemical bonds that hold the wood together release energy when they are broken. These bonds break apart at a high enough temperature, and their breakage yields more heat, which in turn breaks more bonds. It forms a chain reaction. \n\nOnce en... | [] | [] | [
[]
] | |
38geix | why do cop cars not pull all the way over when giving a citation on a busy street? | I often see cop cars blocking half of a lane while giving a citation. This causes a backlog of cars trying to merge out of the lane and seems dangerous to me. Why do they do this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/38geix/eli5why_do_cop_cars_not_pull_all_the_way_over/ | {
"a_id": [
"crutwj0",
"crutxej",
"cruud5t"
],
"score": [
3,
2,
7
],
"text": [
"Many states (including Florida and Tennessee) have laws requiring motorists to change lanes for stopped emergency vehicles; by blocking half a lane, the officer ensures that people comply. By slowing do... | [] | [] | [
[],
[],
[]
] | |
239170 | why can't i have a wild bird like a cardinal or a jay as a pet? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/239170/eli5_why_cant_i_have_a_wild_bird_like_a_cardinal/ | {
"a_id": [
"cgunpwr",
"cgunwyg",
"cguojp7"
],
"score": [
2,
2,
2
],
"text": [
"You can, but they are relatively rare and prefer being in the wild as opposed to other birds that you can buy at a pet shop that are happy in a cage. ",
"Being undomesticated, they retain the wild, ... | [] | [] | [
[],
[],
[]
] | ||
8ntxbt | What exactly did cannons do in Napoleonic warfare? | I honestly don't know. They seem inaccurate and unwieldy, they're huge, and heavy and slow down armies. They just fire 1 really big ball. Why EXACTLY were they useful? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8ntxbt/what_exactly_did_cannons_do_in_napoleonic_warfare/ | {
"a_id": [
"dzyrfti",
"dzz67sm"
],
"score": [
36,
12
],
"text": [
"Can you clarify your question? Do you mean “how did Napoleon use artillery effectively?”(tactics and strategy) “how do cannons help in war at the time?”(more of a mechanical question) or something else entirely?\n\nThe sho... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/373l1d/napoleon_was_greatly_known_for_his_use_of/"
],
[]
] | |
608bfy | the concept of light: its speed, how it travels, what it means to be "# light-years away", etc. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/608bfy/eli5_the_concept_of_light_its_speed_how_it/ | {
"a_id": [
"df4a3ys"
],
"score": [
2
],
"text": [
"So, light travels at a speed of just about 300k km/s.\n\nLight is photons, which are particles that have zero rest mass, and therefor moves at the speed of light (only massless objects can travel at the speed of light). Those particles travel lik... | [] | [] | [
[]
] | ||
scgh5 | If we can make amoxicillin taste like bubble gum, why can't we make all the other liquid medications taste good as well? | It never made sense to me as a kid that amoxicillin was so yummy, but other medicines were so horrible. What's the deal? | askscience | http://www.reddit.com/r/askscience/comments/scgh5/if_we_can_make_amoxicillin_taste_like_bubble_gum/ | {
"a_id": [
"c4cwukw"
],
"score": [
6
],
"text": [
"A lot of the time medications are formulated to have unpleasing tastes to avoid abuse. If OTC cough syrups containing DM tasted good, people would be using them to get effects similiar to PCP or Ketamine.\n\nThere is also of course the risk of a... | [] | [] | [
[]
] | |
2mli2k | how did us mammals evolve into having emotions and specifically love? | It can be a theory since I don't think this has been explained. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2mli2k/eli5_how_did_us_mammals_evolve_into_having/ | {
"a_id": [
"cm5c16j",
"cm5cc20",
"cm5ilfu"
],
"score": [
5,
3,
2
],
"text": [
"Emotions evolved from communication. For example wolf who was able to bark when danger occured saved its pack members thus increasing it own chance of survival. Wolfs who didn't react / understand to re... | [] | [] | [
[],
[],
[
"http://www.chapters.indigo.ca/books/product/9780195178050-item.html?s_campaign=goo-PLATest&gclid=Cj0KEQiAkJyjBRClorTki_7Zx8QBEiQAcqwGMa9Y5OJyC_i2FIq67HFYB9lKeKr8xYFiTtRwo89PeRIaAoCb8P8HAQ",
"http://www.amazon.com/Age-Empathy-Natures-Lessons-Society/dp/0307407772/ref=sr_1_2?s=books&ie=... | |
h3s7p | Can a human body explode from being electrocuted? (cross post from /r/Askreddit) | I'm having a debate with friends and I don't think bodies can explode from being electrocuted. If anyone has a source that can tell me definitively I would greatly appreciate it. A wise person on askreddit suggested I tap into your minds as well. Any ideas? | askscience | http://www.reddit.com/r/askscience/comments/h3s7p/can_a_human_body_explode_from_being_electrocuted/ | {
"a_id": [
"c1scmj8"
],
"score": [
2
],
"text": [
"This was queried here previously:\n\n[_URL_0_](_URL_0_)\n\ntl;dr - Not really."
]
} | [] | [] | [
[
"http://www.reddit.com/r/askscience/comments/gj0ly/what_voltage_of_electricity_would_cause_a_human/"
]
] | |
eww0gq | Did "great warriors" exist? | In fiction you have a lot of warriors that are depicted fighting on the front lines in multiple battles, killing dozens of people each time. I wonder how much this actually happened in real life. I feel like arrows, fatigue, pure number of multi-directional opponents, and just luck, would make it impossible for even th... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/eww0gq/did_great_warriors_exist/ | {
"a_id": [
"fg67dky"
],
"score": [
193
],
"text": [
"No, they did not, but not for the reason you suggest.\n\nIt's always possible to give some examples of individual warriors who were famed for their exploits in hand-to-hand combat. But these exploits never live up to the standards of Hollywood ... | [] | [] | [
[
"http://www.harkavagrant.com/index.php?id=373"
]
] | |
4lipv9 | Do we know when Alexander the Great's sarcophagus was lost? | In Suetonius's "Twelve Caesars" he mentions in the Augustus chapter:
“18. About this time [Augustus] had the sarcophagus containing Alexander the Great’s mummy removed from the mausoleum at Alexandria and, after a long look at its features, showed his veneration by crowning the head with a golden diadem and strewing f... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4lipv9/do_we_know_when_alexander_the_greats_sarcophagus/ | {
"a_id": [
"d3o8h3o"
],
"score": [
5
],
"text": [
"The latest mention of the body of Alexander comes from 215 under the emperor Caracalla. According to contemporary historians Cassius Dio and Herodian, Caracalla was obsessed with Alexander and had a strong desire to emulate the great conqueror. H... | [] | [] | [
[
"http://archive.archaeology.org/online/features/alexander/tomb.html"
]
] | |
e0g3jm | Long Roman names | Why did Quintus Pompeius Senecio Roscius Murena Coelius Sextus Iulius Frontinus Silius Decianus Gaius Iulius Eurycles Herculaneus Lucius Vibullius Pius Augustanus Alpinus Bellicius Sollers Iulius Aper Ducenius Proculus Rutilianus Rufinus Silius Valens Valerius Niger Claudius Fuscus Saxa Amyntianus Sosius Priscus (Consu... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/e0g3jm/long_roman_names/ | {
"a_id": [
"f8fzlkv"
],
"score": [
5
],
"text": [
"There's not a ton of mystery in the name here, even if Q. Sosius Priscus' name takes the practice to its extreme. Unusually long names in consular families in the second century is rather well attested epigraphically, though you wouldn't know it ... | [] | [] | [
[]
] | |
6hd38h | What part of a flame transmits the most heat? | A quick google search states that the hottest part of a flame is basically the bottom middle. But from my experience in a lab things get hotter quicker when in the tip of the flame. How does this work/ am I wrong/ is there another answer entirely? | askscience | https://www.reddit.com/r/askscience/comments/6hd38h/what_part_of_a_flame_transmits_the_most_heat/ | {
"a_id": [
"dixrger"
],
"score": [
2
],
"text": [
"It depends on the flame/fuel source. For the most part, sustained flames use a gas fuel source and there's a section called a hydrogen cone. For Bunsen burners this is the tight, light blue cone that rests between two darker blue cones.. it's alm... | [] | [] | [
[]
] | |
bgm9ai | what makes people smile/frown or do any facial expressions connected to how they feel the same way everywhere? is it biological or just years of people doing that with their faces? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bgm9ai/eli5_what_makes_people_smilefrown_or_do_any/ | {
"a_id": [
"ellxdbm",
"ellzqu8"
],
"score": [
3,
2
],
"text": [
"Both. \n\nBiologically, the human brain is well-adapted to notice, understand, and use these physical cues. The human body is well adapted to actually displaying a smile/frown (and other common expressions).\n\nWith that sai... | [] | [] | [
[],
[]
] | ||
coa6hf | How can fish, starfish and simple sea slugs live at the depth of the Mariana Trench without being crushed alive when we have to build pressure-resistant pods just to descend a fraction of that depth? | askscience | https://www.reddit.com/r/askscience/comments/coa6hf/how_can_fish_starfish_and_simple_sea_slugs_live/ | {
"a_id": [
"ewkpalb"
],
"score": [
2
],
"text": [
"The main thing that’s helps creatures like that is that they have no lungs. If humans went down that far our lungs would collapse. Gases can compress which is not good for staying alive. Not only do fish and such not have lungs they don’t have o... | [] | [] | [
[
"https://www.scientificamerican.com/article/how-do-deep-diving-sea-cr/"
]
] | ||
46si60 | what is the difference between homeopathy and naturopathic medicine? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/46si60/eli5_what_is_the_difference_between_homeopathy/ | {
"a_id": [
"d07iw0t",
"d07ixv5",
"d07j48u"
],
"score": [
3,
2,
2
],
"text": [
"Homeopathy is an alternative \"medicine\" that involves taking a substance that causes a symptom, diluting it in water until zero molecules of the original substance remain (for the standard \"30c\" dil... | [] | [] | [
[],
[],
[]
] | ||
1nlffl | why does a rope..etc break when pulled suddenly(when hauling heavy weights),but holds if gradual force is applied? | My towing cable broke while accelerating sudenly :( | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1nlffl/eli5why_does_a_ropeetc_break_when_pulled/ | {
"a_id": [
"ccjn4zm",
"ccjoguj"
],
"score": [
5,
4
],
"text": [
"F = ma, or Force equals mass times acceleration. \n\nWhen you apply an acceleration to the rope by jerking it, it creates a force. The harder you jerk the rope, the greater the force.",
"Impulse. Force x time = mass x c... | [] | [] | [
[],
[]
] | |
12k3d1 | What kind of leader was/is Fidel Castro? It seems that every single documentary I see paints him in a different light - I'd like to get down to the truth. | From what I have learned he:
* Introduced positive reforms to health care and education
* Nationalized resources including the agrarian reform
* Helped defeat apartheid in Southern Africa through his action in Angola (according to Nelson Mandella)
* Has typically been very generous with humanitarian aid to foreign cou... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/12k3d1/what_kind_of_leader_wasis_fidel_castro_it_seems/ | {
"a_id": [
"c6vqdvl"
],
"score": [
9
],
"text": [
"Honestly, it seems as though you're pretty much answering your own question. As a historical figure, Castro is nuanced enough to be intriguing and, as you say, some of his policies appear laudable and others appear unpleasant.\n\nHistorians can o... | [] | [] | [
[]
] | |
83k66d | what would happen to your eyes if you don't blink for 24 hours, 1 week, 1 month, 1 year? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/83k66d/eli5_what_would_happen_to_your_eyes_if_you_dont/ | {
"a_id": [
"dvif6ca",
"dvif6kh"
],
"score": [
2,
2
],
"text": [
"I think the underlying question here is: why are eyeballs wet? \nThere are living cells on the surface of the eyes, and just like any other living cell they will die if the proper fluidity is not kept. Because human eyes ar... | [] | [] | [
[],
[]
] | ||
3o40g0 | are there known evolutionary reasons that humans have a sense of aesthetics? ex. thinking that trees are beautiful, puppies are cute, art is beautiful, music sounds good, etc. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3o40g0/eli5are_there_known_evolutionary_reasons_that/ | {
"a_id": [
"cvttm82"
],
"score": [
4
],
"text": [
"Several. The art and music builds group cohesion. You are attracted to your own group's art and music which makes you feel connected to other members of your group. Young animals and other \"cute\" species have facial proportions similar to our o... | [] | [] | [
[]
] | ||
4282yj | can someone out there please explain to me what's the difference between a metaphor and an analogy? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4282yj/eli5_can_someone_out_there_please_explain_to_me/ | {
"a_id": [
"cz8cmt5",
"cz8ctiq",
"cz8di4s"
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"score": [
2,
2,
2
],
"text": [
"**Then**\n\nYou can use it as a sort of \"well in that case!\" Like if someone's a jerk to you, and you say \"Then piss off!\" You're saying \"Well, in that case, piss off!\"\n\nBut more appropriately... | [] | [] | [
[],
[],
[]
] | ||
1ivm1i | Does "spaghettification" really not occur at super massive black holes? | I was watching this (rather silly) program with Michio Kaku, where he was gonna find a solution to how one can "safely" enter a black hole.
Anyways, he argued that small black holes have such a "steep" gravitational effect compared to a super massive black hole, and thus you would not be ripped apart when entering a ... | askscience | http://www.reddit.com/r/askscience/comments/1ivm1i/does_spaghettification_really_not_occur_at_super/ | {
"a_id": [
"cb8havv"
],
"score": [
13
],
"text": [
"For supermassive black holes, the point at which the tidal forces become so strong that they spaghettify you indeed lies inside the event horizon. So the spaghettification would happen after you enter the black hole.\n\n_URL_0_"
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Spaghettification#Inside_or_outside_the_event_horizon"
]
] | |
1juje3 | Why did large numbers of people still emigrate to the United States despite the ongoing War for Southern Independence? (1861-1865) | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1juje3/why_did_large_numbers_of_people_still_emigrate_to/ | {
"a_id": [
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"text": [
"…. Alright I’ll take the bait. Yes, the “War of Southern Independence” is one of the many names that have been used to designate the conflict between the Northern and Southern United States from 1861-1865, more commonly kno... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Quarrel_of_the_Ancients_and_the_Moderns",
"http://i.imgur.com/kldM4Yo.jpg"
]
] | ||
2iz1zt | Do electrons "seem" to teleport when changing orbits due to acceleration to near light speed, resulting in time dilation? | I'm a physics novice, so please "learn" me on any weird assumptions I have. What am asking is, say enough energy hits an atom to make an electron change its orbit. We see it seem to "hop" space, right? Is this due to an acceleration to near light speed, resulting in a time dilation effect, where our instruments can't ... | askscience | http://www.reddit.com/r/askscience/comments/2iz1zt/do_electrons_seem_to_teleport_when_changing/ | {
"a_id": [
"cl6viyl",
"cl6w9x1"
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"score": [
11,
4
],
"text": [
"Electron's don't have a well defined location. They don't orbit in circles around the nucleus. Instead, they exist in a \"cloud\", so to speak, of possible locations. When an electron gains energy, that cloud shifts to a hi... | [] | [] | [
[],
[]
] | |
2u4i0m | What element/chemical would be extremely useful if it werent so dangerous to humans? | askscience | http://www.reddit.com/r/askscience/comments/2u4i0m/what_elementchemical_would_be_extremely_useful_if/ | {
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"co52do0",
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"text": [
"Beryllium has a lot of great mechanical properties, is good for radiation shielding, and is very strong for its weight, but it's extremely toxic. Machining pure beryllium is ha... | [] | [] | [
[],
[],
[
"http://www.propertiesofmatter.si.edu/asbestos.html"
],
[
"http://www.chemistry.ucla.edu/sites/default/files/safety/sop/SOP_Osmium_Tetroxide.pdf"
]
] | ||
8y4zs5 | How do pockets of breathable air form in deep underwater caves? | I was reading [an article on BBC News](_URL_0_) about a diver who got lost and only survived because of an underground pocket of breathable air. How did the air get there in the first place? Is it just really, really old? Will the oxygen ever get replenished or is it mostly unusable now? | askscience | https://www.reddit.com/r/askscience/comments/8y4zs5/how_do_pockets_of_breathable_air_form_in_deep/ | {
"a_id": [
"e28sa2d",
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"score": [
114,
29
],
"text": [
"The rock around those caves is mostly sandstone and limestone, both of which are permeable (notice all the stalagmites and stalactites in the images). To find air, all you would have to do is find a part of the cave abo... | [] | [
"https://www.bbc.com/news/magazine-40558067"
] | [
[
"https://caves.org/pub/journal/PDF/V79/cave-79-01-59.pdf"
],
[]
] | |
1h2etn | When did Constantinople spread to the opposite side of the Bosporus Strait? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1h2etn/when_did_constantinople_spread_to_the_opposite/ | {
"a_id": [
"caqa7ud"
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"text": [
"Constantinople under Byzantium never made it to the other side of the strait. In fact the [Fatih](_URL_0_) district of Istanbul was the entirety of Constantinople until Ottoman conquest.\n\nHowever, a little known fact is that Constantinople cont... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Fatih",
"https://en.wikipedia.org/wiki/Names_of_Constantinople",
"https://en.wikipedia.org/wiki/Uskudar",
"https://en.wikipedia.org/wiki/Council_of_Chalcedon",
"https://en.wikipedia.org/wiki/Kadikoy",
"https://en.wikipedia.org/wiki/Bosphorus_Bridge",
"htt... | ||
2f1t89 | if the troops in ukraine are not officially russian, why can't nato attack them and defend ukraine? | Surely if Russia is denying that the troops, tanks and so on are theirs, then why are they not fair game for attack? Doesn't Nato have an obligation to help them due to the treaty after they removed their nuclear weapons? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2f1t89/eli5_if_the_troops_in_ukraine_are_not_officially/ | {
"a_id": [
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"text": [
"Ukraine is not a NATO nation.",
"There are three major problems with this line of thought. \n\n1: Why should NATO defend Ukraine exactly? Ukraine isn't in NATO, and there's never been any reasonabl... | [] | [] | [
[],
[],
[]
] | |
3zfjxb | What were Roman shields made of and how effective were they? | So I'll apologize in advance if this has been answered before as I can't conceive that no one has asked it before... but I'm having no luck finding another thread.
To specify the question is about the more square shaped shields the Romans used.
It's kind of a two part question.
#1) What were these actually mad... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3zfjxb/what_were_roman_shields_made_of_and_how_effective/ | {
"a_id": [
"cylqcv5",
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"score": [
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55
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"text": [
"Some surviving examples of Scuta here.\n\n_URL_0_\n\n_URL_1_\n\nTypically the main bodies are made of wooden planks glued together. If I'm not wrong, some were made of plywood. They are then layered with rawhide and painte... | [] | [] | [
[
"http://artgallery.yale.edu/collections/objects/5959",
"https://www.pinterest.com/schollespqr/schild-scutum/"
],
[]
] | |
23d3as | If electrons in a copper wire move slower than a human can walk, why do lights and other appliances switch on almost instantaneously? | If electrons in a copper wire move slower than a human can walk, why do lights and other appliances switch on almost instantaneously?
Since the electrons feeling the electric force move at light speed, then bump into something, then continue that process, I understand they move very slowly along the wire. So why can I... | askscience | http://www.reddit.com/r/askscience/comments/23d3as/if_electrons_in_a_copper_wire_move_slower_than_a/ | {
"a_id": [
"cgvtpeg",
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"score": [
13,
5,
8
],
"text": [
"When you turn on a switch, you don't need to wait for the electron at the switch to get to the lightbulb for the light to come on. There are electrons hanging out all throughout the circuit. Individual... | [] | [] | [
[],
[],
[
"http://sciencequestionswithchris.wordpress.com/2014/02/19/what-is-the-speed-of-electricity/"
]
] | |
2fjbtx | How did honey become supersaturated in the first place? What do the bees do if they find their entire hive crystallized? | I tried Googling for the answer, but my Google-fu isn't good enough. All I found were explanations for why honey crystallizes.
If I leave a mixture of 80% sugar and 20% water at room temperature, the sugar will not fully dissolve. If I heat the mixture, the sugar might completely dissolve. However, honey, from the flo... | askscience | http://www.reddit.com/r/askscience/comments/2fjbtx/how_did_honey_become_supersaturated_in_the_first/ | {
"a_id": [
"ck9ug4f"
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"score": [
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"text": [
"Supersaturation doesn't only occur through heating. Honey is made to have a lower water% through forced evaporation-- bees fanning the uncured not-supersaturated honey until it is the proper ratio. If there is no seed crystal introduced in this ... | [] | [] | [
[]
] | |
4mwwin | We don't feel the earth spinning because it is constant. Yet it is fastest at the equator and gets slower as you move away from it. My question is how come no one ever notices the increase or decrease when traveling towards the equator or away from the equator? | askscience | https://www.reddit.com/r/askscience/comments/4mwwin/we_dont_feel_the_earth_spinning_because_it_is/ | {
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"score": [
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2,
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6,
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"text": [
"The effect of the coriolis force is very small at \"normal speeds but will actually make a difference in fuel con... | [] | [] | [
[],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Tropical_cyclone",
"https://en.wikipedia.org/wiki/Coriolis_force#Meteorology"
],
[],
[]
] | ||
2ct4k0 | how does the universe have a predictable nature if all subatomic particles that constitute matter are completely random? where exactly does predictability come from in a physical sense? | I was inspired by [this part of a vsauce video](_URL_0_). The part about the randomness of quantum mechanics.
Is predictability a property of macroscopic systems, even if the systems are built on a fundamental randomness? Doesn't macroscopic predictability imply that **the macroscopic laws of physics we experience at ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ct4k0/eli5_how_does_the_universe_have_a_predictable/ | {
"a_id": [
"cjit3lh"
],
"score": [
5
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"text": [
"Over a large enough scale, patterns emerge. For example, if I flip a coin, I have no idea if its going to land heads or tails. It is complete random if it is the only coin I look at. But if I flip 10 quintillion coins, I'm pretty damn sure 5 q... | [] | [
"https://www.youtube.com/watch?v=9rIy0xY99a0&list=UU6nSFpj9HTCZ5t-N3Rm3-HA&feature=player_detailpage#t=443"
] | [
[]
] | |
19io78 | Why does the Rh Negative blood type persist? Isn't it genetically disadvantageous? | I've been trying to understand why the Rh negative factor is so prevalent in the Caucasian population. It seems like it can only be genetically disadvantageous, since an Rh neg female can only, practically, have one child with an Rh pos male, and the rest will usually die of hemolytic disease (disregard Rhogam since it... | askscience | http://www.reddit.com/r/askscience/comments/19io78/why_does_the_rh_negative_blood_type_persist_isnt/ | {
"a_id": [
"c8ofscd"
],
"score": [
10
],
"text": [
"For clarity, the Rh blood group actually consists of about 50 different proteins, which [have been evolving in arrangement for quite a while](_URL_0_). The main one that we are concernd with medically is the D antigen since it is the most immuno... | [] | [] | [
[
"http://hmg.oxfordjournals.org/content/6/6/843.short",
"http://www.biomedcentral.com/1471-2156/2/10",
"http://www.ncbi.nlm.nih.gov/books/NBK2266/",
"http://en.wikipedia.org/wiki/Pseudogene",
"http://link.springer.com/article/10.1007%2Fs100380050006?LI=true",
"http://www.reddit.com/r/asksci... | |
2dlssc | how did words such as fuck, shit, etc. originate? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2dlssc/eli5_how_did_words_such_as_fuck_shit_etc_originate/ | {
"a_id": [
"cjqq0ha"
],
"score": [
3
],
"text": [
"Those are both words with very old Germanic roots. They are related to the Dutch words fokken/fok (to breed/breeding) and schijt (poop). Yes they were probably normal words before they were curse words."
]
} | [] | [] | [
[]
] | ||
1fp9qs | how cotton has different quality. | Why is Walmart cotton not as good a quality as say Brooks Brothers? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1fp9qs/eli5_how_cotton_has_different_quality/ | {
"a_id": [
"cacobyt"
],
"score": [
4
],
"text": [
"I work in Ag and just visited/toured one of the USDA cotton grading facilities. So I think I can answer this. \n\nThe cotton is graded based on standards set by the USDA. it is measured by color, fiber length and strength, and the amount of trash... | [] | [] | [
[]
] | |
7pvzmu | what does ios do differently to android for iphones to only need 1-2 gb of ram? | Edit: Should have specified; *only need 1-2 GB* compared to flagship Android models, which usually have around 6 GB. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7pvzmu/eli5_what_does_ios_do_differently_to_android_for/ | {
"a_id": [
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"dsknc3l",
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"dsl4yjw",
"dsl5aw8",
"dsl6slc",
"dslf1e5",
"dslplhn",
"dsludx0",
"d... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Garbage_collection_(computer_science)"
],
[],
[
"https://youtu.be/lCFpgknkqRE",
"https://youtu.be/D9prht-PcWY"
],
[
"https://www.androidpit.com/android-vs-ios-ram-management",
"https://youtu.be/lCFpgknkqRE"
],
[],
[
"https://www.re... | |
8fg6c5 | Does the way food looks and smells influence taste? If so how does that work? | askscience | https://www.reddit.com/r/askscience/comments/8fg6c5/does_the_way_food_looks_and_smells_influence/ | {
"a_id": [
"dybp4ml",
"dy4t67q"
],
"score": [
2,
2
],
"text": [
"By 'taste' I assume you mean the slightly more specific 'flavour' which is absolutely influenced by smell - studies have shown that, by removing the sense of smell via a nose plug, peoples' ability to identify what they are ... | [] | [] | [
[],
[]
] | ||
20vf7y | why do people (even i) think that extremely attractive women are dumb? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20vf7y/eli5why_do_people_even_i_think_that_extremely/ | {
"a_id": [
"cg73y2l",
"cg7452t"
],
"score": [
3,
2
],
"text": [
"For a long time intelligence in women was not considered an attractive quality, because of the shitty way that they were often treated in society. Intelligent women were often pissed off about being restricted from engaging... | [] | [] | [
[],
[]
] | ||
1woebg | Can single celled bacteria get cancer? | Plants can get (benign) cancer. Obviously animals can. Can a single celled amoeba get cancer? | askscience | http://www.reddit.com/r/askscience/comments/1woebg/can_single_celled_bacteria_get_cancer/ | {
"a_id": [
"cf3y6hd",
"cf3y8iw",
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"score": [
9,
2,
4
],
"text": [
"No, because cancer is defines as abnormal growth of cells inside of a multicellular organism.\n\nA 'cancerous' single cell organism just.. doesn't make sense. Maybe in a colonial organism, but that's no... | [] | [] | [
[],
[],
[]
] | |
1mnf0e | What i´m doing when I treat y´ as dy/dx ? | That is, why I can think in a derivative as a ratio of two separate variables and operate algebraically, and why it works?
For example, when I solve the differential equation y´ = x^2 / y, despite being said it´s an "abuse of notation", I can just rearrange it as y dy = x^2 dx and integrate both sides.
Edit: I would a... | askscience | http://www.reddit.com/r/askscience/comments/1mnf0e/what_im_doing_when_i_treat_y_as_dydx/ | {
"a_id": [
"ccavpv4",
"ccavw0d"
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"score": [
9,
2
],
"text": [
"Most people would tell you that dx and dy are limits of small variations; you take a small difference, keep track consistently of terms that are of comparable size, and get proceed with your limits, etc.\n\nHowever, there is... | [] | [] | [
[
"http://www.math.wisc.edu/~keisler/calc.html",
"http://www-history.mcs.st-and.ac.uk/Biographies/Robinson.html"
],
[]
] | |
203kq6 | What is happening, physically and computationally, to my computer as it degrades over the years? | My laptop used to play games on high, take 10 seconds to boot from when I press the button to when I'm fully logged in, open and close programs and windows with ease etc. But now, it takes upwards of 5 minutes just to log in and be able to open a program, I've had to lower the settings on games, when I open a file in V... | askscience | http://www.reddit.com/r/askscience/comments/203kq6/what_is_happening_physically_and_computationally/ | {
"a_id": [
"cfzmcpm",
"cfzmsd5",
"cfzmtvy",
"cfzq9e2"
],
"score": [
5,
3,
3,
7
],
"text": [
"I can answer the computational/software part of the question.\n\nThere are a couple reasons why over time your computer appears to be \"slowing down\" with regards to how long it t... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Defragmentation",
"http://en.wikipedia.org/wiki/MSConfig"
],
[],
[],
[]
] | |
luvrb | Why does the air within the Troposphere not settle and form layers out of its constituents? | I understand that the air we breath is composed of primarily nitrogen, oxygen, argon and lesser amounts of other gases, but why do these not settle into their own layers based on their relative atomic masses? | askscience | http://www.reddit.com/r/askscience/comments/luvrb/why_does_the_air_within_the_troposphere_not/ | {
"a_id": [
"c2vw5yp",
"c2vw5yp"
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"score": [
2,
2
],
"text": [
"For the same reason that the gases don't form an thin condensed layer on the ground: their thermal energies give them large velocities that promote mixing. It's a tradeoff between gravity and entropy. Gravity is the driving ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Limnic_eruption"
],
[
"http://en.wikipedia.org/wiki/Limnic_eruption"
]
] | |
8g1j29 | Can astronomers find and study planets that are far away from stars or other natural space light sources? | Considering that the lights in the universe come from stars or other natural sources, I have always wondered how scientists find and study planets or other objects in space that are far away from stars. | askscience | https://www.reddit.com/r/askscience/comments/8g1j29/can_astronomers_find_and_study_planets_that_are/ | {
"a_id": [
"dy8ol6y"
],
"score": [
8
],
"text": [
"Yes, but only under extremely rare circumstances given our current technology. One example is [PSO J318.5-22](_URL_0_), another example is [2MASS J1119-1137](_URL_1_). \n\nBoth of these objects are large planets, about 5 - 10 Jupiter-masses. They... | [] | [] | [
[
"https://en.wikipedia.org/wiki/PSO_J318.5-22",
"https://en.wikipedia.org/wiki/2MASS_J1119%E2%80%931137"
]
] | |
9s1sbs | how do stealth planes & drones actually work ? | So I was watching this little gem of a talk [_URL_0_](_URL_0_) .And suddenly got me thinking about stealth drones(from minute 21).I know there are some tricks in building them so they don't get detected by all the technologies.But how is that done, what material do they use? And are stealth drones just unmanned stealth... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9s1sbs/eli5_how_do_stealth_planes_drones_actually_work/ | {
"a_id": [
"e8le3rm"
],
"score": [
9
],
"text": [
"Stealth aircraft use two main techniques for avoiding radar detection: Using radar-absorbing materials and having certain angles of outer surfaces to reflect radar waves away from the receiver.\n\nRadar works by sending out an electromagnetic sig... | [] | [
"https://www.youtube.com/watch?v=TSR-b9yuTbM"
] | [
[]
] | |
2i8zqc | - if foxes are canines too, can dogs theoretically create offspring with them? why or why not? | Had a weird dream that I was mating Golden Retrievers with foxes and creating hybrid tame puppies and that got me wondering if it was really possible? They are both of the canine family, but is that the only requirement to create offspring? I know some wild cats (Bobcat/Lynx/Serval/etc) can be bred with common house-ca... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2i8zqc/eli5_if_foxes_are_canines_too_can_dogs/ | {
"a_id": [
"ckzyo1w"
],
"score": [
3
],
"text": [
"From Wikipedia:\n\n > Members of the dog genus Canis: wolves, domestic dogs, dingoes, Ethiopian Wolves, coyotes, and golden jackals cannot interbreed with members of the wider dog family: the Canidae, such as South American canids, foxes, African... | [] | [] | [
[]
] | |
1u1zt9 | Would it be possible to create a sunscreen-like substance for radiation of other kinds? Specifically, radiation caused by a nuclear explosion/accident? | Sunscreen blocks a part of the electromagnetic spectrum, which is a type of radiation. Would it be possible to create a product that is rubbed on the skin to protect against nuclear radiation? What about less-harmful stuff, like microwaves or X-rays? | askscience | http://www.reddit.com/r/askscience/comments/1u1zt9/would_it_be_possible_to_create_a_sunscreenlike/ | {
"a_id": [
"cedxk0e",
"cedxm10"
],
"score": [
3,
5
],
"text": [
"I think that the harmful part of radiation would require either much thicker or denser material than sunblock. Maybe a suspension of lead particles could help. This would probably give you lead poisoning, and not protect you... | [] | [] | [
[],
[]
] | |
9fydsm | how does the united states have such a high gdp per capita relative to other developed countries? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9fydsm/eli5_how_does_the_united_states_have_such_a_high/ | {
"a_id": [
"e6050el"
],
"score": [
14
],
"text": [
"Well, not having their infrastructure and economies devastated by the carnage and destruction of two world wars happening right on their doorstep within 20 years of each other probably helped a little..."
]
} | [] | [] | [
[]
] | ||
11jxz9 | "Slowing light in Bose-Einstein Condensates" - What's actually going on here? | [Here is the paper from the research.](_URL_0_)
An educated guess tells me that this isn't actually changing the velocity of the photons which should always be *c*.
So what's actually going on here? | askscience | http://www.reddit.com/r/askscience/comments/11jxz9/slowing_light_in_boseeinstein_condensates_whats/ | {
"a_id": [
"c6n5e3f"
],
"score": [
5
],
"text": [
"When light is in a medium, it's overall propagation rate changes. This is because, in simple terms, photons are absorbed and re-emitted as they pass through the medium. So even though every photon moves at c ( which it always will), the average s... | [] | [
"http://www.europhysicsnews.org/articles/epn/pdf/2004/02/epn04201.pdf"
] | [
[]
] | |
4bqtak | Which happens faster, erosion or uplift? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/4bqtak/which_happens_faster_erosion_or_uplift/ | {
"a_id": [
"d1bux67"
],
"score": [
8
],
"text": [
"**TL;DR:** In the short term (lets say less than a million years, but that's a rough approximation) either erosion or uplift could be faster depending on the exact conditions in the area of interest, but we expect on the long term that landscapes... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Stream_power_law",
"http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.560.8459&rep=rep1&type=pdf"
]
] | |
rxs04 | Why are humans' (and other animals) white blood cells and antibodies so useless? | askscience | http://www.reddit.com/r/askscience/comments/rxs04/why_are_humans_and_other_animals_white_blood/ | {
"a_id": [
"c49hm1w"
],
"score": [
3
],
"text": [
"Most of these infections will be fixed by the immune system. As a matter of fact, most ear infections do not need antibiotics (source: _URL_0_).\n\nAs a matter of fact, our immune system's overzealous response is what causes a significant amount ... | [] | [] | [
[
"http://www.aafp.org/online/en/home/clinical/clinicalrecs/children/otitismedia.html"
]
] | ||
10j121 | If we are attracted to good looking people, does that mean in the future there will no longer be any "ugly" people? | Because of natural selection/evolution will weed out the ugliness? (not sure which)
edit: I'm sure more goes into getting together with someone than that, but what if that was the sole factor? Would humanity eradicate "ugliness" over time? | askscience | http://www.reddit.com/r/askscience/comments/10j121/if_we_are_attracted_to_good_looking_people_does/ | {
"a_id": [
"c6dwacl"
],
"score": [
3
],
"text": [
"The cultural definition of \"looks good\" is very very subjective. Most striking example is how in the past in China, plump women were thought to be the most physically attractive, whereas today it is the opposite. Beauty is very subjective, and ... | [] | [] | [
[]
] | |
6sqn2j | From 2010 to 2016, student loan debt has approximately doubled, and the average student loan debt in 2016 has seen a 50% increase from 2010. What factors are driving this growth and what's the outlook of it's sustainability? | 2010 average debt source:
_URL_2_
2016 average debt source:
_URL_1_
Chart from Wikipedia showing debt increase from 2006 to 2016;
_URL_0_
| askscience | https://www.reddit.com/r/askscience/comments/6sqn2j/from_2010_to_2016_student_loan_debt_has/ | {
"a_id": [
"dlewjpr",
"dlffp9e",
"dlgseh4"
],
"score": [
12,
3,
2
],
"text": [
"Increasing by nearly 50% is not doubling. According to your sources, the average debt in 2010 was $25,250. For that to double it would have to be $50,500, but it's only $37,172.\n\nConverting to consta... | [] | [
"https://en.m.wikipedia.org/wiki/Student_loans_in_the_United_States#/media/File%3AStudent_loan_debt.png",
"https://studentloanhero.com/student-loan-debt-statistics/",
"http://www.nytimes.com/2011/11/03/education/average-student-loan-debt-grew-by-5-percent-in-2010.html"
] | [
[
"https://data.bls.gov/cgi-bin/cpicalc.pl?cost1=25%2C250.00&year1=201001&year2=201606",
"http://catalogarchive.unt.edu/2010-11/undergrad/financial.htm",
"https://studentaccounting.unt.edu/sites/default/files/UGRDSpring2017resshort.pdf",
"https://www.nytimes.com/2015/04/05/opinion/sunday/the... | |
jl2zm | what do these terms mean: p/e ratio, dividend, yield? | I'm thinking about investing in stocks but I don't know how these values translate to whether or not I should buy a certain stock.
Also, I looked up a random stock, AstraZeneca (NYSE:AZN), on Google and Yahoo! Finance, and the yield/dividend values were different. Is there a reason for this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/jl2zm/eli5_what_do_these_terms_mean_pe_ratio_dividend/ | {
"a_id": [
"c2d0r1h",
"c2d0r1h"
],
"score": [
4,
4
],
"text": [
"P/E ratio: Price to earning ratio. Price of the share vs what it is earning. Literally, Price / Earnings. If my company's shares are selling for $5, and it is earning them $0.25 per year, I have a P/E ratio of 5/.25 = 20. If... | [] | [] | [
[],
[]
] | |
y5e25 | what physical property of our brain allows us to think to ourselves? | What-in my brain- allows me to talk to myself in my head or have coherent thoughts? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/y5e25/eli5_what_physical_property_of_our_brain_allows/ | {
"a_id": [
"c5slceu",
"c5sn7iu"
],
"score": [
2,
2
],
"text": [
"Disclaimer: I am not a neuroscientist.\n\nAs far as I'm able to tell, this is not a question that neuroscience has been able to answer beyond simply, \"you have a whole lot of neurons\". Neurons are the cells in your brain w... | [] | [] | [
[
"http://themindi.blogspot.ca/2007/02/chapter-11-prelude-ant-fugue.html",
"http://en.wikipedia.org/wiki/G%C3%B6del,_Escher,_Bach"
],
[]
] | |
3na9qb | Could we ever build an optical/light microscope that could see atoms? | With a big enough lens, could we do this, or would it not be possible? A problem I see with this not working is I assume that atoms aren't much bigger than photons? I don't really know how big photons are, but I assume that if they are at least close to the size of atoms, we wouldn't be able to see anything. Or do I... | askscience | https://www.reddit.com/r/askscience/comments/3na9qb/could_we_ever_build_an_opticallight_microscope/ | {
"a_id": [
"cvn6pc2",
"cvnc205"
],
"score": [
7,
3
],
"text": [
"An optical microscope would never be able to see atoms. The wavelength of light is so much larger than the atoms that the amount of energy the atom displaces on the wavelength would be imperceptible, so the viewer couldn't s... | [] | [] | [
[],
[
"https://www.bnl.gov/newsroom/news.php?a=25398"
]
] |
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