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2mg0ce
At what point does someone stop sleeping and start being in a coma?
Do they get pronounced to be in a coma after one day? Two? Or is it the circumstances under which they fall asleep?
askscience
http://www.reddit.com/r/askscience/comments/2mg0ce/at_what_point_does_someone_stop_sleeping_and/
{ "a_id": [ "cm41ds5", "cm4rcte" ], "score": [ 39, 3 ], "text": [ "A person is considered to be *comatose* if they, for a period lasting **longer than six hours**, cannot be awakened, don't respond to external stimuli, lack a normal sleep-wake cycle and do not act voluntarily.\n\n(source: ...
[]
[]
[ [], [] ]
21irdh
From an evolutionary standpoint, what is the advantage for trees that have fruit that is sour, like the Lemon, or even poisonous, like the Manchineel? I thought animals eating fruit and defecating the seeds was an important part of plant reproduction.
askscience
http://www.reddit.com/r/askscience/comments/21irdh/from_an_evolutionary_standpoint_what_is_the/
{ "a_id": [ "cgdhfak", "cgdhki7", "cgdik73" ], "score": [ 2, 7, 4 ], "text": [ "I can't answer about the fruits you mentioned, but in general, the flavor of the fruit matches the tastes of the animals that carry it.\n\nFor example, chili peppers contain capsaicin, which makes them ...
[]
[]
[ [], [], [ "http://www.smithsonianmag.com/arts-culture/why-the-avocado-should-have-gone-the-way-of-the-dodo-4976527/?no-ist" ] ]
630hs7
when jumpstarting your car, why do you connect the black cable to the engine block instead of the black/negative terminal?
My mother needed a jump start earlier today and insisted on connecting red to red and black to black. Looking at the instructions on the cables and, later, on the internet you're supposed to connect the black cable to an unpainted section of the engine block of person's car with the dead battery. My mother insisted o...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/630hs7/eli5_when_jumpstarting_your_car_why_do_you/
{ "a_id": [ "dfqcv2u" ], "score": [ 12 ], "text": [ "Sparks near the battery can cause hydrogen fires. Sparks near the engine block are much safer. That said, modern batteries are sealed and pretty safe, but safer is always better." ] }
[]
[]
[ [] ]
1jk2zr
Which non-military event had the biggest impact on the course of World War II?
Let's exclude peace treaties and stick to the '39-'45 timeframe.
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1jk2zr/which_nonmilitary_event_had_the_biggest_impact_on/
{ "a_id": [ "cbfg4q9", "cbfh4bo", "cbfh4cz", "cbfidhb" ], "score": [ 5, 3, 2, 6 ], "text": [ "Weather could have an effect. Operation Overlord was postponed due to the weather. Because the Allies had weather stations in the Atlantic, and the Germans didn't, the Allies kne...
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[]
[ [], [], [], [] ]
1p23vj
To what degree (if any) do personal habits (e.g. slouching) attribute to scoliosis, torticollis, etc.?
Inspired by this [comment](_URL_0_). My mother has scoliosis/torticollis and I am just wondering. My degree is very low (no worry). I [searched](_URL_1_) this sub and saw nothing similar. Thank you.
askscience
http://www.reddit.com/r/askscience/comments/1p23vj/to_what_degree_if_any_do_personal_habits_eg/
{ "a_id": [ "ccynfdh" ], "score": [ 2 ], "text": [ "I'm an instructor for musculoskeletal anatomy, so this question caught my eye! Personal habits such as slouching, leaning, and poor posture in general can most definitely lead to abnormal positioning of the spine/neck/head. In a small percentage ...
[]
[ "http://www.reddit.com/r/WTF/comments/1p1oa2/the_spine_of_someone_with_untreated_severe/ccxvlap", "http://www.reddit.com/r/askscience/search?q=scoliosis&restrict_sr=on" ]
[ [] ]
2unth9
Can wifi ever be as fast as fiber?
if so, why go through all the rigamarole to lay all these fiber optics cables?
askscience
http://www.reddit.com/r/askscience/comments/2unth9/can_wifi_ever_be_as_fast_as_fiber/
{ "a_id": [ "cobiiaa" ], "score": [ 3 ], "text": [ "Fiber has a few advantages over wireless (I'll lump more RF technologies with WiFi, as WiFI is really more intended for local communications) it is not just about speed: \n\nRange- With fiber a 10 miles is no big deal, longer transmission is not...
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[]
[ [] ]
x0r4l
What psychological techniques can be used to counteract procrastination?
Considering that procrastination can be a problem for all humans, what methods can be used to convince the brain to "start working now"? It seems to me that simply "forcing" oneself to start working is counterproductive, as this will only reinforce the notion that work is "boring". Is there a method that can alleviate...
askscience
http://www.reddit.com/r/askscience/comments/x0r4l/what_psychological_techniques_can_be_used_to/
{ "a_id": [ "c5i59bv", "c5ib8qp", "c5idll3" ], "score": [ 20, 5, 4 ], "text": [ "Everything you want to know is in this previously, exhaustively explored thread: [Why do humans procrastinate and how can it be beat?](_URL_0_)", "Pick a big project that you will never realistical...
[]
[]
[ [ "http://www.reddit.com/r/askscience/comments/mkwf2/why_do_humans_procrastinate_and_how_can_it_be_beat/" ], [], [] ]
2fwhvf
Why is the Great Leap Forward considered the biggest famine of all time?
The question I have is about the Great Leap Foward and death rates. I was looking through the death rates of China to see how it has developed over the years and something that has stuck out to me is the death rate of the Great Leap Forward. So the death rate of China from 1958-1961 (GLF) follows as (these are the m...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2fwhvf/why_is_the_great_leap_forward_considered_the/
{ "a_id": [ "ckdwy74", "cke9nr9", "ckethkv" ], "score": [ 27, 4, 17 ], "text": [ "You are suffering from a strong mathematical fallacy, based on notation. Rate is the _portion_ of the inititial population that expired from famine. When you use the phrase 'biggest famine' you are ...
[]
[]
[ [], [ "http://books.google.co.uk/books/about/Mao_s_Crusade_Politics_and_Policy_Implem.html?id=9pPxwn6EvR4C" ], [] ]
flagvh
How close was Japan to cracking Navajo code talkers? Was Japan aware Americans were using a Native American language as code?
So far, everything I read about Navajo code talkers were from the American perspective. I'm wondering about the Japanese perspective. How did Japanese code breakers react to the Navajo language? How close were the Japanese to deciphering Navajo? Were Japanese code breakers even aware they were listening to a Native A...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/flagvh/how_close_was_japan_to_cracking_navajo_code/
{ "a_id": [ "fky3zkx" ], "score": [ 4904 ], "text": [ "I did a research project with Navajo sources on this. It sadly never was finished and published, but I was able to use local archives, talk to members of the Navajo community about their verbal histories and study the US military documents reg...
[]
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[ [ "https://www.newspapers.com/image/?clipping_id=45254503&fcfToken=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJmcmVlLXZpZXctaWQiOjM1NTIwNDQwLCJpYXQiOjE1ODQ3MjY0ODIsImV4cCI6MTU4NDgxMjg4Mn0.bE5KqFXi_2LotcFtL8HyhFEhcbVD6lTbWlLQW0-8-mo", "https://www.newspapers.com/image/?clipping\\_id=45254503&fcfToken=eyJ...
2ee74y
why do i sometimes see ads for the service i'm using to see the ad?
For example, half the ads I hear on Pandora are for... Pandora. I'm already here to hear the ad, no need to tell me to go there!
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2ee74y/eli5_why_do_i_sometimes_see_ads_for_the_service/
{ "a_id": [ "cjyljv4", "cjyp6yu" ], "score": [ 3, 3 ], "text": [ "Because self-promotion is a way to retain customers. Also, they're usually ads for Pandora's premium service right?", "Pandora could be used in a restaurant or office to play music for everyone; while the company might b...
[]
[]
[ [], [] ]
3j0fzd
why isn't the remote finder feature common on tvs?
When you turn on the TV manually, a sound comes from the remote until you press a button. Why isn't this feature on all smart tvs?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3j0fzd/eli5why_isnt_the_remote_finder_feature_common_on/
{ "a_id": [ "culeil4", "culnztk" ], "score": [ 36, 4 ], "text": [ "Most TVs use IR (infrared), which require line of sight to the TV - (the remote sends a series of invisible 'blinks', like morse code). \n\nThe TV doesn't have a way to send a blink out, and even if it could, the remote is...
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[]
[ [], [] ]
26n29r
how on earth is it a good idea to cross lanes of traffic like this on an overpass?
Many overpasses around in Utah cross over traffic. Everyone drives on the left. To accomplish this two new and seemingly uneccesary one-lane intersections are created. This is what I'm talking about: _URL_0_ I assume there is some magic about this design. Hoping someone can explain it to me as if I were five.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/26n29r/eli5_how_on_earth_is_it_a_good_idea_to_cross/
{ "a_id": [ "chskn4b", "chsmtyd" ], "score": [ 2, 4 ], "text": [ "First, what makes you think it's bad? Traffic is separated. It looks a lot less confusing from the ground than it does from the air, because you only see what's in front of you. \n\nSecond, it's better because traffic enteri...
[]
[ "http://i.imgur.com/1Q0fz4s.jpg" ]
[ [], [] ]
5wsjxj
Did America's founding fathers believe the country would become a super power of the world in the next centuries?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/5wsjxj/did_americas_founding_fathers_believe_the_country/
{ "a_id": [ "decozft" ], "score": [ 3 ], "text": [ "It depends. More than likely, no. The thing about the founding fathers is that none of them ever agreed on anything. George Washington was an adamant isolationist, which is why the US broke their treaty with France to help them during their re...
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[]
[ [] ]
debo8x
if cancer is basically a clump of cells that dont want to die, why/how do things like cigarettes, asbestos, and the literal sun trigger it?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/debo8x/eli5_if_cancer_is_basically_a_clump_of_cells_that/
{ "a_id": [ "f2u4wry", "f2u4xhz", "f2u6nm7", "f2ub51e", "f2ufkrh", "f2ugs00", "f2uh194", "f2uhd4y", "f2uhr44", "f2ujwla", "f2ukpbh", "f2ulrg9", "f2ults4", "f2umxmn", "f2uno49", "f2up3nt", "f2uqglk", "f2uxnuj", "f2uxqhu", "f2v0ovg", "f...
[]
[]
[ [], [], [], [], [], [], [], [], [], [], [], [], [], [ "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4493566/", "http://www.tuitnutrition.com/2015/02/metabolic-theory-cancer-2-theories.html", "https://thetruthaboutcancer.com/mitochondria-function-reduce-cancer-risk/" ], [], ...
5shom0
how is it that the president can have the authority to authorize a nuclear attack but not a travel ban?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5shom0/eli5_how_is_it_that_the_president_can_have_the/
{ "a_id": [ "ddf4f4s", "ddf4hu2", "ddf4iha", "ddf54fz", "ddf857y", "ddf9jqa" ], "score": [ 3, 6, 2, 12, 3, 5 ], "text": [ "Immigrants to the US, and especially US residents, have a lot more rights under the Constitution than random foreigners who may be nuke...
[]
[]
[ [], [], [], [ "https://www.uscis.gov/ilink/docView/SLB/HTML/SLB/0-0-0-1/0-0-0-29/0-0-0-2006/0-0-0-2364.html" ], [], [ "https://www.bloomberg.com/view/articles/2017-02-02/there-s-no-quick-fix-to-trump-s-immigration-ban", "http://www.usatoday.com/story/news/2017/02/04/read-washington-judges-ru...
rrftj
Plasma Gasification? Thoughts Please
So i have looked into this a bit and am still puzzled about it. Can anyone provide any feedback or personal thoughts on this. Why don't we use our wastes more within this process?
askscience
http://www.reddit.com/r/askscience/comments/rrftj/plasma_gasification_thoughts_please/
{ "a_id": [ "c4827r0" ], "score": [ 2 ], "text": [ "From a chemical standpoint, the biggest problem with plasma gasification is that it makes big assumptions as to the chemical composition of the input waste (i.e. it's not energy-generating if you \"feed\" it the wrong things.) Beyond that, they a...
[]
[]
[ [] ]
jxa1q
can somebody please explain cosmic microwave backgorund radiation?
_URL_0_ I kinda sorta get it but... Not really. Please help me grasp this incredible discovery.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/jxa1q/eli5_can_somebody_please_explain_cosmic_microwave/
{ "a_id": [ "c2fvfje", "c2fvfje" ], "score": [ 6, 6 ], "text": [ "When the universe was very young—as in, less than 400,000 years old—it was very, very hot. It was so hot, in fact, that matter couldn't exist except in a form called \"plasma\". This is the kind of stuff the sun is made out ...
[]
[ "http://en.wikipedia.org/wiki/Cosmic_microwave_background_radiation" ]
[ [], [] ]
9rl9oj
why did pilgrims wear buckles on their hats?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9rl9oj/eli5_why_did_pilgrims_wear_buckles_on_their_hats/
{ "a_id": [ "e8hp1ed", "e8hp1os" ], "score": [ 5, 3 ], "text": [ "Contrary to popular myth, capotains never included buckles on the front of them; this image was created in the 19th century.", "They didn't. That style of hat came after the Pilgrims left England and had established them...
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[]
[ [], [] ]
7k0ppd
how is fm radio still thriving as much as it supposedly is as a media source?
I have heard data given commercials recently that says something like "fm radio still reaches more Americans than any other media outlet" but I feel like the only place FM is still frequently used is in older vehicles that have no means of connecting or playing anything else. Will the inclusion of bluetooth/USB in mod...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/7k0ppd/eli5_how_is_fm_radio_still_thriving_as_much_as_it/
{ "a_id": [ "dram8sa", "dranjgb", "drao76a", "drapluk" ], "score": [ 2, 6, 2, 3 ], "text": [ "digital radio is becoming more common, but it still pales in comparison to the number of cars that have a plain old FM radio receiver. \n\nMy cars aren't exactly new, they're both ...
[]
[]
[ [], [], [], [] ]
rzgn5
Double slit experiment: what happens if you move the slits further apart?
How far do the slits have to be apart before the particle-wave duality collapses and you don't get the interference pattern? Is there a limit?
askscience
http://www.reddit.com/r/askscience/comments/rzgn5/double_slit_experiment_what_happens_if_you_move/
{ "a_id": [ "c49vrxh", "c49w0kd" ], "score": [ 2, 2 ], "text": [ "Diffraction only happens when the gap is roughly equal to the wavelength of the wave passing through it. If you increase the size of the gap, diffraction just won't happen and the wave would pass through it like it would a ...
[]
[]
[ [], [] ]
2vujxd
Does a galaxy receding from us at close to the speed of light due to the expansion of space experience time dilation and length contraction from our perspective?
And continuing that thought, if the galaxy is receding from us at faster than the speed of light, do we perceive it to be going backwards in time?
askscience
http://www.reddit.com/r/askscience/comments/2vujxd/does_a_galaxy_receding_from_us_at_close_to_the/
{ "a_id": [ "colhjyv", "colomgk" ], "score": [ 2, 3 ], "text": [ "I don't know if it's appropriate to post this here, but I asked a similar question recently and got no love:\n\nDoes relativistic length contraction apply to objects that are only moving away from us due to the expansion of ...
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[]
[ [ "http://www.reddit.com//r/askscience/comments/2vdzx7/does_relativistic_length_contraction_apply_to/" ], [ "http://xxx.lanl.gov/abs/astro-ph/9605134" ] ]
j2thn
can someone explain how to start your own company?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/j2thn/can_someone_explain_how_to_start_your_own_company/
{ "a_id": [ "c28o7s9", "c28oagi", "c28oeo4" ], "score": [ 3, 2, 2 ], "text": [ "I regrettably don't have any first-hand experience, and I also would like to know more about this question, but I can offer what I witnessed from my mother starting her own company:\n\nKnow your shit. T...
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[]
[ [], [], [] ]
1vf727
What are some real world applications of the infinite sum of natural numbers? (1+2+3+...=-1/12)
Wikipedia link: _URL_0_ I absolutely love math and I find this all just so interesting!!!
askscience
http://www.reddit.com/r/askscience/comments/1vf727/what_are_some_real_world_applications_of_the/
{ "a_id": [ "cernr0j", "cerqggs" ], "score": [ 7, 11 ], "text": [ "I don't know if you could call it a practical application, but this sum and regularization technique appear in the theory for the Casimir force, which is an attraction between very close uncharged objects, and is something ...
[]
[ "http://en.wikipedia.org/wiki/1_%2B_2_%2B_3_%2B_4_%2B_%E2%8B%AF" ]
[ [], [ "http://www.reddit.com/r/askscience/comments/1vf3st/physicists_and_mathematicians_help_me_understand/cermuhy", "http://physics.stackexchange.com/questions/12533/why-zeta-regularization-is-not-valid-for-multiple-loops", "http://www.damtp.cam.ac.uk/user/tong/string/string.pdf" ] ]
2qsf23
why do some radios only come with the fm station and not the am
Got a new radio today, and was curious why it didn't come with AM radio functions.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2qsf23/eli5why_do_some_radios_only_come_with_the_fm/
{ "a_id": [ "cn943m2" ], "score": [ 3 ], "text": [ "AM (_URL_1_) and FM (_URL_0_) radio are two different ways of encoding audio in a radio signal. the actual mechanics of converting the radio signal into audio you can hear are different, and the two different method require different circuitry or...
[]
[]
[ [ "http://en.wikipedia.org/wiki/Frequency_modulation", "http://en.wikipedia.org/wiki/Amplitude_modulation" ] ]
1ah4r1
Why have so few transdermal medication patches been developed?
Way back in the 90's the media made it seem like transdermal medication patches were the wave of the future. By now we were supposed to have a wide array of medical patches to choose from for all kinds of medications. Yet from what I can tell only a few have been brought to market. Is there some inherent problem or lim...
askscience
http://www.reddit.com/r/askscience/comments/1ah4r1/why_have_so_few_transdermal_medication_patches/
{ "a_id": [ "c8xikas", "c8y4l2v" ], "score": [ 3, 3 ], "text": [ "This doesn't completely address the question, but transdermal medications can have variable efficacy in elderly patients, as their absorption through the skin is often dependent upon hypodermal fat. As people age, this fatty...
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[]
[ [], [] ]
ae5i7x
why are all podcast ads for subscription services?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/ae5i7x/eli5_why_are_all_podcast_ads_for_subscription/
{ "a_id": [ "edmlxg0" ], "score": [ 3 ], "text": [ "Subscription services are just a very popular startup business model currently, it’s a really successful one as subscription services generate good, solid, predictable, and real cash flows (of course only for those that succeed). Subscriptions ar...
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[ [] ]
5sdope
is it cheaper to automate processes than to outsource them to cheap labour?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5sdope/eli5_is_it_cheaper_to_automate_processes_than_to/
{ "a_id": [ "dde9go5", "dde9jla", "dde9kyq", "ddebys3" ], "score": [ 3, 14, 2, 4 ], "text": [ "In my experience it is enormously cheaper to outsource because there is zero investment. To automate requires capital investment for machines and time to switch over which is itse...
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[]
[ [], [], [], [] ]
486r73
How does heat travel at an atomic level?
If two atoms of any substance were left side by side ,one hot atom , one cold atom what happens? How does heat move from one to the other?
askscience
https://www.reddit.com/r/askscience/comments/486r73/how_does_heat_travel_at_an_atomic_level/
{ "a_id": [ "d0ieh2b" ], "score": [ 6 ], "text": [ "Temperature is a bulk property of matter- it doesn't make sense to talk about a \"hot\" atom or a \"cold\" atom- only large collections of atoms have a defined temperature. So, it doesn't really make sense about a \"hot\" atom coming into contact...
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[]
[ [] ]
1cyd6e
Why exactly do teeth have nerves?
I've always wondered this. I figured it was to tell your body when they are broken, but if teeth are purely for gnawing and chewing on food, shouldn't they be more reinforced than they actually are?
askscience
http://www.reddit.com/r/askscience/comments/1cyd6e/why_exactly_do_teeth_have_nerves/
{ "a_id": [ "c9l5llv", "c9l7ugn", "c9lq9dj" ], "score": [ 97, 84, 3 ], "text": [ "Your jaw is extremely powerful and if you exerted its full force on your teeth you could shatter them. The nerves give you some indication of the pressure you're applying.", "Keep in mind that ev...
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[]
[ [], [ "http://www.ncbi.nlm.nih.gov/pubmed/16015319", "http://cro.sagepub.com/content/1/2/135.full.pdf" ], [] ]
5hdrzx
how does a heat pump work?
Also interested in the difference in normal operation mode and "aux" or "emergency" mode. Note: I have googled, the responses just aren't in layman terms and I'm not understanding.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5hdrzx/eli5_how_does_a_heat_pump_work/
{ "a_id": [ "dazdcoe", "dazdju5", "daze0xf", "dazklyd" ], "score": [ 2, 3, 12, 3 ], "text": [ "Sorry, can't flair. On mobile. ", "It's basically an air conditioner that can be turned around. When it's an AC it blows cold air and hot air is pumped outside. When it's a he...
[]
[]
[ [], [], [], [] ]
92nx00
What happens to the mitochondria as an animal ages? Are their fewer per cell? Are mitochondria less efficient?
askscience
https://www.reddit.com/r/askscience/comments/92nx00/what_happens_to_the_mitochondria_as_an_animal/
{ "a_id": [ "e3826lc", "e39buft" ], "score": [ 5, 2 ], "text": [ "I would research this more using google, but from the literature that I’ve read, it appears that mitochondrial dysfunction occurs over time, and more mitochondria exist in cells that do not replicate (in G0, so muscle cells ...
[]
[]
[ [ "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3390067/" ], [] ]
1tk0dd
what is happening when i turn off the television and the lights, and the television still looks to be dimly lit?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1tk0dd/eli5_what_is_happening_when_i_turn_off_the/
{ "a_id": [ "ce8tz2y", "ce9biki" ], "score": [ 37, 2 ], "text": [ "You mean old CRT TVs? The way those work is the back side of the screen is coated in phosphor. The TV makes images by firing a beam of electrons at the phosphor coating, making it glow. The beam moves from left-to-right and...
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[ [], [] ]
6v7gcv
does a baby smell like s mix of its parents or a new smell to an animal with a more sensitive ability to detect odor?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6v7gcv/eli5_does_a_baby_smell_like_s_mix_of_its_parents/
{ "a_id": [ "dlyhlcf", "dlyj5ms", "dlyj8fs", "dlykja2", "dlymcp0" ], "score": [ 8, 147, 21, 4, 12 ], "text": [ "Seems like it would be almost impossible for a baby to NOT smell like its parents since they come into so much daily and repeated skin to skin contact wit...
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[ [], [], [], [], [] ]
2lnj0d
the marvel cinematic universe and the film rights to their respective characters in the marvel comic universe. more specifically, quicksilver & scarlet witch.
I'm not that big of a comic book fan, but I do enjoy their film adaptations. Most of us know that the distribution rights to most Marvel entities belong to Marvel Studios, however, the franchises of Spider-man, Fantastic Four & X-Men still belong to Columbia Pictures and 20th Century Fox, respectively. This makes it ...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2lnj0d/eli5_the_marvel_cinematic_universe_and_the_film/
{ "a_id": [ "clwga1q" ], "score": [ 5 ], "text": [ "Quicksilver and Scarlet Witch occupy a weird little grey area in the usage rights that Marvel licensed to Fox. They're mutants, children of Magneto, so they're part of the X-Men franchise. So Fox can use them. However, they're *also* long-term Av...
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[ [] ]
1j4u16
Does hair grow at a constant rate or in bursts?
I went for a haircut today and the thought struck me. Does it grow at different speeds depending on the time of day? Or the phases of the moon maybe?
askscience
http://www.reddit.com/r/askscience/comments/1j4u16/does_hair_grow_at_a_constant_rate_or_in_bursts/
{ "a_id": [ "cbb541e" ], "score": [ 2 ], "text": [ "Generally our hair grows fastest in the summer and it is more productive when people reach 15-30 years. After this period, as we become older, the natural hair growth process slows down considerably.\n\nStress is a major cause of countless health...
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[ [] ]
8co2io
Katyn Massacre and Nazis
Some times I have seen communist leaning people attributing the Katyn massacre to the Nazis and claim that any connection to the Soviets was fabricated propaganda. Consequently anyone citing it to show the Soviet Union wasnt all sunshine is labelled a Nazi apologist by them. 1) Is there any merit at all to those cla...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/8co2io/katyn_massacre_and_nazis/
{ "a_id": [ "dxgiv79" ], "score": [ 3 ], "text": [ "Although only focused specifically on Katyn for a small portion, [this](_URL_0_) will likely be of interest for you." ] }
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[ [ "https://www.reddit.com/r/AskHistorians/comments/2jb2eg/why_did_the_resistance_movement_of_poland_failed/cla3afn/" ] ]
74532w
Why can't we capture carbon with trees or technology?
just wondering
askscience
https://www.reddit.com/r/askscience/comments/74532w/why_cant_we_capture_carbon_with_trees_or/
{ "a_id": [ "dnw1qi3" ], "score": [ 13 ], "text": [ "Well, we can. And up to a point, we do.\n\nThe follow up question which will immediately pop up in your mind, is why it isn't a greater deal, and the short answer to that is that we've just begun looking into it, and of course cost and scale. Ye...
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[]
[ [ "https://en.wikipedia.org/wiki/Gorgon_Carbon_Dioxide_Injection_Project", "https://scholar.harvard.edu/files/davidkeith/files/56.wong_.2003.economicsofacidgasreinjection.e.pdf", "https://en.wikipedia.org/wiki/Carbon_sequestration", "https://en.wikipedia.org/wiki/Carbon_capture_and_storage" ] ]
1gh1n6
why do people on reddit care so much about comment and link karma?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1gh1n6/eli5_why_do_people_on_reddit_care_so_much_about/
{ "a_id": [ "cak4qil", "cak4st1", "cak4swi" ], "score": [ 5, 5, 2 ], "text": [ "Human brains love being rewarded, even if that reward is just positive feedback (in the form of an upvote or a comment agreeing) from other anonymous users. It creates pleasure to get link and comment k...
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[ [], [], [ "http://uncyclopedia.wikia.com/wiki/Zen#A_Boy_and_His_Dog" ] ]
18mlcx
why do i have to be 18 to buy a lighter?
I was looking at lighters in the dollar store earlier today and the lady at the counter asked if I was planning on buying one and I replied with "yes" and she asked me how old I was and I replied "17", where shortly after she said that I have to be at least 18 to buy one. Why is it like this?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/18mlcx/eli5_why_do_i_have_to_be_18_to_buy_a_lighter/
{ "a_id": [ "c8g3nw3" ], "score": [ 2 ], "text": [ "Because that's the legal age to buy tobacco and tobacco paraphernalia? " ] }
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[ [] ]
1rgzjd
Dual pregnancy by two different men?
So my roommates and I are having a drunken conversation, and we're wondering if it's possible for a women getting dp'd to have two ovaries impregnated by two different men during the same sexual encounter. Obviously after a sperm impregnates an ovum the Ca2+ shield prevents a second sperm from entering. But is there ...
askscience
http://www.reddit.com/r/askscience/comments/1rgzjd/dual_pregnancy_by_two_different_men/
{ "a_id": [ "cdn6dbz" ], "score": [ 27 ], "text": [ "Yes, it's possible to have multiple ova fertilized by sperm from different men. Sperm can live for several days, and multiple ova can be released over the course of several days in a single ovulation cycle. That means it's possible for more than...
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[]
[ [ "http://www.ncbi.nlm.nih.gov/pubmed/7871943", "http://www.fertstert.org/article/S0015-0282%2897%2981456-2/abstract", "http://www.nejm.org/doi/full/10.1056/NEJM197809142991108" ] ]
1lhr0d
What is the precedent for the 'one phone call' if you are arrested?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1lhr0d/what_is_the_precedent_for_the_one_phone_call_if/
{ "a_id": [ "cbzfyj4" ], "score": [ 16 ], "text": [ "Turns out it's just a Hollywood invention, in real life if you're arrested it looks like in some places they aren't even required to grant you a single phone call, and in others it's stipulated as a \"reasonable\" amount of calls. If you'd lik...
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[ [ "http://webcache.googleusercontent.com/search?q=cache:http://www.woot.com/blog/post/the-debunker-when-youre-arrested-are-you-entitled-to-one-phone-call" ] ]
rrgct
buddism
I'm a moron when it comes to anything spiritual... I've heard things in passing about Buddhism, but I still don't know its core beliefs. Any Buddists out there who can help me? Or anyone with some knowledge of it.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/rrgct/eli5_buddism/
{ "a_id": [ "c481t2z", "c482564", "c484s0r", "c4856m5", "c487c2z", "c48bcng" ], "score": [ 3, 22, 4, 2, 2, 2 ], "text": [ "I'm no good at ELI5, but...\n\nIt's easier to understand if you take a secular, non-spiritual viewpoint on the subject. \n\nBuddhism i...
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[]
[ [ "http://simple.wikipedia.org/wiki/Buddhism" ], [], [], [], [], [] ]
1wpe69
Are any of our direct (evolutionary) ancestors alive today? And if so, which is the one that is closest to us?
I searched 'direct ancestor' on this sub and interestingly didn't see this question asked yet. I realize the answer might be something like "Yes, amoeba cells" but I was wondering if there is a direct ancestor species still alive today that we are closer to.
askscience
http://www.reddit.com/r/askscience/comments/1wpe69/are_any_of_our_direct_evolutionary_ancestors/
{ "a_id": [ "cf474dr" ], "score": [ 9 ], "text": [ "Your closest evolutionary ancestors are your parents :)\n\nOkay, all kidding aside, it looks like the answer is no. Diagram [here](_URL_0_). Our direct evolutionary ancestors *H. heidelbergensis* died a while ago, and we helped to kill off the *H...
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[ [ "http://open.jorum.ac.uk/xmlui/bitstream/handle/10949/918/Items/S182_10_section4.html" ] ]
40t209
why is the force of gravity lower in water then on land?
This may already have been asked, and probably in a better way. Is the force of gravity applied to water as a whole? Thank you in advanced.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/40t209/eli5_why_is_the_force_of_gravity_lower_in_water/
{ "a_id": [ "cywtl0q", "cywto7b" ], "score": [ 6, 2 ], "text": [ "It's not less, it's exactly the same.\n\nThere's just a new force involved, bouncy, that's pushing you up while gravity is pulling you down. It could be argues that bouncy is simply the force of gravity applied differently, ...
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[ [], [] ]
1xe2fi
Why is it apparently accepted that different breeds of cats and dogs have certain personalities, abilities, and levels of aggressiveness, but not different races of humans?
This is a horribly complex question with a bunch of sub-questions and I apologize in advance if this would be better off in /r/asksocialscience or /r/philosophy. Is the idea of personality, abilities, and intelligence linked to genetics (in animal breeds) not actually accepted in the scientific community (and is perha...
askscience
http://www.reddit.com/r/askscience/comments/1xe2fi/why_is_it_apparently_accepted_that_different/
{ "a_id": [ "cfamto8" ], "score": [ 3 ], "text": [ "This is really a snakepit of a question and I don't know how to answer it completely.\n\nIt's important to note, though, that dog and cat breeds are extensively inbred compared to human races, and are much less genetically diverse. This makes it ...
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3im9dm
how is braille used/interpreted in cultures with complicated writing systems (arabic, japanese, etc.)? does each language have its own unique braille alphabet?
Title is pretty self explanatory. It seems like a Braille system for written languages with thousands of characters would be quite inefficient and difficult to learn.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3im9dm/eli5_how_is_braille_usedinterpreted_in_cultures/
{ "a_id": [ "cuhnit8", "cui4hdz" ], "score": [ 3, 2 ], "text": [ "For [Chinese braille](_URL_0_) see here. It uses \"multiple characters\" for one sign. ", "Generally, each language has it's own version of braille. Languages use the Latin alphabet mostly share the same basic characters...
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[ [ "https://en.wikipedia.org/wiki/Chinese_braille" ], [ "http://unesdoc.unesco.org/images/0008/000872/087242eb.pdf" ] ]
9u915c
why does your brain automatically read words and why can’t you stop it from doing so?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9u915c/eli5_why_does_your_brain_automatically_read_words/
{ "a_id": [ "e92ud98" ], "score": [ 3 ], "text": [ "Our brains are wired to pattern match. By teaching kids to read, we shortcut the patterns at an early age, and it becomes habit. Try looking at a totally different language and you certainly won’t automatically read it." ] }
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[ [] ]
1na4oe
Why do so many American suburbs have the word "Heights" in them? And why is this naming trend not present in other English-speaking countries?
Yes, this is in AskHistorians for a reason.
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1na4oe/why_do_so_many_american_suburbs_have_the_word/
{ "a_id": [ "ccgqi5i", "ccgv236" ], "score": [ 2, 2 ], "text": [ "I am not an expert, but I believe it has to do with the fact that the wealthy use to have their homes built on the hills surrounding cities. These would often be called \"the heights\". So as suburbs developed to give an imp...
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[ [], [] ]
4igqsz
south atlantic anomaly
_URL_0_ is a bit.. bit confusing for me. What effects does it have on satellites ( current and newer )?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4igqsz/eli5_south_atlantic_anomaly/
{ "a_id": [ "d2xzwsc" ], "score": [ 5 ], "text": [ "The South Atlantic Anomaly is an area of low earth orbit where radiation is particularly high, due to the shape of Earth's magnetic field. This means that satellites pass through these areas are bombarded by high-energy particles, which cause cum...
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[ "https://en.wikipedia.org/wiki/South_Atlantic_Anomaly" ]
[ [] ]
9pswpm
why does the greenhouse effect doesn't work both ways?
So, i had a discussion with a friend who denies that climate change is man-made. I refered to the greenhouse effect, and he asked why it wouldnt work both ways. I was a litle bit baffled, because i couldnt awnser that question, and noticed that i dont actually know in detail how the greenhouse effect works. So, if the...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9pswpm/eli5_why_does_the_greenhouse_effect_doesnt_work/
{ "a_id": [ "e841u8r", "e841yhu" ], "score": [ 10, 25 ], "text": [ "Perhaps because we arent talking reflection but absorption.\n\nGreen house gasses DO stop a lot of radiation from reaching \"the surface\" by absorbing the photons energy increasing its energy level. This increases its hea...
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[ [], [] ]
2ed926
Why are haunted housed historically depicted as Victorian-style in pop culture?
That is, what is the origin of the "classic" haunted house with Victorian architecture? Does it stem from early film or a real life attraction? I frequently see the same style haunted house in cartoons, decorations, advertisements, etc. and wonder why there is such a consistency. Edit: Response from /u/Crabrubber led...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2ed926/why_are_haunted_housed_historically_depicted_as/
{ "a_id": [ "cjyvery", "cjyvysj" ], "score": [ 3, 10 ], "text": [ "hi! not sure if you mean Victorian or rather Gothic architecture? If the latter, there was a thread not long ago on all things Goth and Gothic, including horror\n\n[Goths and The Goths](_URL_0_)", "The classic Hollywood...
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[ "http://www.tripplannermag.com/index.php/2012/10/horror-style-why-second-empire-scares-you/" ]
[ [ "http://www.reddit.com/r/AskHistorians/comments/256tzy/goths_and_the_goths/" ], [ "http://en.wikipedia.org/wiki/Athens_Lunatic_Asylum", "http://en.wikipedia.org/wiki/Greystone_Park_Psychiatric_Hospital" ] ]
22axbl
How do interlocking basalt columns, such as those seen in "The Giant's Causeway" in Northern Ireland, form?
Question inspired by [this post](_URL_0_)
askscience
http://www.reddit.com/r/askscience/comments/22axbl/how_do_interlocking_basalt_columns_such_as_those/
{ "a_id": [ "cglamdn" ], "score": [ 2 ], "text": [ "First, you need to form an even layer of hot molten rock. The two best ways of doing that are either a lava flow, or a sill (a sill being an intrusion of magma along a bedding plane between sedimentary rock layers).\n\nThat then gives you a hot f...
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[ "http://www.reddit.com/r/EarthPorn/comments/229qo5/the_giants_causeway_an_area_of_about_40000/" ]
[ [ "http://en.wikipedia.org/wiki/Convection" ] ]
wgdgu
Is peer review essential? (philosophy of science(?))
In general I am very interested in whether the idea of peer review is absolutely essential to the scientific method as a means of obtaining knowledge, or whether it's just a nice-to-have or add-on. I'm wondering if science, as an epistemological system, is essentially social in nature. I think it isn't, in sort of the ...
askscience
http://www.reddit.com/r/askscience/comments/wgdgu/is_peer_review_essential_philosophy_of_science/
{ "a_id": [ "c5d2yf8", "c5d31x9" ], "score": [ 6, 6 ], "text": [ "Philosophy time!\n\nAs with any useful word in a useful language, \"science\" is a complex. Certainly an isolated individual can engage in scientific inquiry, so \"science\" in this sense doesn't require peer review. However...
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[ "http://en.wikipedia.org/wiki/Non-Euclidean_geometry" ]
[ [], [] ]
5fw9lc
how do cows pollute so much and why is this happening?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5fw9lc/eli5how_do_cows_pollute_so_much_and_why_is_this/
{ "a_id": [ "danhsaq", "daniazd", "danil7u", "dann8us" ], "score": [ 7, 9, 3, 3 ], "text": [ "Cows, due to the way their stomachs and digestive tract work produce a lot of Methane by...well...~~farting~~ burping.\n\nMethane is estimated to be 23x worse in regards to negativ...
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[ [ "http://i.dailymail.co.uk/i/pix/2014/05/21/article-2635309-1E10CA9400000578-463_634x431.jpg" ], [], [], [] ]
1xkvby
It's 1776, how would I drink beer at home?
Was it commercially available? How was it sold (keg, mug, bottle) if at all? Did I brew my own? Could anyone buy at taverns?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1xkvby/its_1776_how_would_i_drink_beer_at_home/
{ "a_id": [ "cfce9fr", "cfcfb9b", "cfcfjd0", "cfcg1fe" ], "score": [ 21, 5, 3, 3 ], "text": [ "In Sweden, most people would brew a dark, cloudy and weak beer (1-3%) at their own farm from their own produced barley. This was stored in kegs or barrels and drunk by everyone (i...
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[ [], [], [], [] ]
2zdewq
Is it likely that the United States would have invaded Grenada following the October 1983 Beirut barracks bombing even if Maurice Bishop hadn't been deposed earlier that month?
The relationship between the United States and Bishop's People's Revolutionary Government of Grenada clearly hadn't been particularly rosy ever since the New Jewel Movement coup put Bishop in power in 1979, and those tensions seemed to worsen considerably during the construction of the Point Salines Airport. Was a U.S....
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2zdewq/is_it_likely_that_the_united_states_would_have/
{ "a_id": [ "cphwplq" ], "score": [ 22 ], "text": [ "For context: \n\n* Grenada is a small nation, but its alignment with the USSR and Cuba provided strategic advantages to those nations. Grenada was on the opposite side of the Caribbean from Cuba. The construction of an airfield on the island by ...
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1uxvur
what happens when a limb loses and then regains it's feeling?
specifically, if the brains impulses move so quickly, why doesn't the feeling come back immediately when the pressure from the nerve is released?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1uxvur/what_happens_when_a_limb_loses_and_then_regains/
{ "a_id": [ "cemt3x0" ], "score": [ 2 ], "text": [ "Hi there, excellent question.\n\nWhen pressure is placed on a nerve(neuron), this prevents signals from getting through. \n\nThere are 4 main types of primary afferent axons:\n\n**A-alpha(I):** Control skeletal muscle. Fancy name is Propriocepto...
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4ilbl5
Why is the weak nuclear force between 2 protons in the nucleus, 10^-7 times the electromagnetic interaction?
I saw a chart with relative stregth of the fundamental forces and I saw that, and I've been looking into it, but I can't find anywhere how that was determined. _URL_0_ There you can see the chart and proportion I was talking about I'm not a physics student, but I've been doing a particle physics course that's on a gen...
askscience
https://www.reddit.com/r/askscience/comments/4ilbl5/why_is_the_weak_nuclear_force_between_2_protons/
{ "a_id": [ "d2zl3j5" ], "score": [ 4 ], "text": [ "The driving reason for this is that the weak force is carried by massive particles, so the strength of the force drops off exponentially with distance, whereas the electromagnetic force is carried by photons which are massless and hence produce a...
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[ "http://www.pha.jhu.edu/~dfehling/particle.gif" ]
[ [ "https://profmattstrassler.com/articles-and-posts/particle-physics-basics/the-known-forces-of-nature/the-strength-of-the-known-forces/" ] ]
2q02c5
Would a bubble be absorbed by the water around it?
If a bubble was released at the bottom of the Marina Trench, would it be absorbed before it got to the surface?
askscience
http://www.reddit.com/r/askscience/comments/2q02c5/would_a_bubble_be_absorbed_by_the_water_around_it/
{ "a_id": [ "cn2c4jm" ], "score": [ 2 ], "text": [ "Yes - for most gasses, solubility in water increases with pressure." ] }
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452m7n
How do we know if subatomic particles are spherical?
Whenever I see subatomic particles (Protons, Photons, Neutrinos, Ect.) mentioned they always seem to be pictured as spherical objects, so I wanted to know if this was artist interpretation, and if not, how can we be certain.
askscience
https://www.reddit.com/r/askscience/comments/452m7n/how_do_we_know_if_subatomic_particles_are/
{ "a_id": [ "czvdok5" ], "score": [ 6 ], "text": [ "It's an artist interpretation. The currently accepted model, the standard model (or more generally quantum field theory itself) models fundamental particles (photons, neutrinos, quarks, electrons) as pointlike, i.e. they are mathematical points, ...
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3l1m12
in WW2 was it easier for non-Germans to volunteer for the SS compared to the Wehrmacht.
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/3l1m12/in_ww2_was_it_easier_for_nongermans_to_volunteer/
{ "a_id": [ "cv2dpm2" ], "score": [ 2 ], "text": [ "The SS had the strictest policy about proof of German blood, and needed to get a certificate called \"Großer Ariernachweis\" (Greater Aryan certificate) with the added information that showed proof of pure Aryan blood back to at least 1750.\n" ...
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3bexft
why don't video game industries use sd cards instead of discs?
Let's say on average (cause I don't know if they can be bigger than this) a disc is 25GB and 54Mb/s but SD cards can hold more and are WAY faster. Why don't gaming companies switch over and use SD cards?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3bexft/eli5why_dont_video_game_industries_use_sd_cards/
{ "a_id": [ "csliax7", "cslib85", "csliid5" ], "score": [ 7, 5, 2 ], "text": [ "Compared to SD cards, Blu-ray discs are extremely more cheap to mass produce. Even with DVD's, you as a consumer can buy a 50 pack for pretty cheap.", "well, consider the costs of them. you can buy...
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[ [], [], [] ]
3ensj6
if police officers are not required to tell us when they are undercover, what stops all police offers from just wearing normal clothes and always being undercover?
I don't see why police officers wouldn't just always stay undercover so that people didn't know they were there. I know this would be a bad thing for then to be able to do, but I don't know why they can't do it.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3ensj6/eli5_if_police_officers_are_not_required_to_tell/
{ "a_id": [ "ctgo6gg", "ctgo6n3", "ctgo7f1", "ctgo81d", "ctgphak" ], "score": [ 35, 18, 8, 10, 2 ], "text": [ "Why would they?\n\nClearly marked police presence is a crime deterrent. Very few police activities involve being sneaky and doing undercover stuff (though ...
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[ [], [], [], [], [] ]
kpaa4
can someone please eli5 why accretion hasn't affected saturn's ring?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/kpaa4/can_someone_please_eli5_why_accretion_hasnt/
{ "a_id": [ "c2m52wg", "c2m52wg" ], "score": [ 3, 3 ], "text": [ "Can someone please ELI5 accretion?", "Can someone please ELI5 accretion?" ] }
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[ [], [] ]
ch5k3b
how do ads load on bad service but normal content doesn’t?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/ch5k3b/eli5_how_do_ads_load_on_bad_service_but_normal/
{ "a_id": [ "euplngk" ], "score": [ 3 ], "text": [ "Youtube (through Google) have many, many servers across multiple regions of the world to store their data. Very popular content may be hosted on multiple servers to constantly have it closer to the viewer, and on faster servers.\n\nLess popular, ...
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[ [] ]
1896ed
what the pirate bay are fighting for and what they hope to achieve in the future
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1896ed/eli5_what_the_pirate_bay_are_fighting_for_and/
{ "a_id": [ "c8ctoz7", "c8cub9v" ], "score": [ 3, 2 ], "text": [ "The right to get free copyrighted stuff on the internet so that you don't have to pay content producers.", "Their fighting for piracy since thats the business model for the website." ] }
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[ [], [] ]
18lf07
What is to prevent a spaceship, like the USS Enterprise traveling at "WarpSpeed" from not hitting objects in space while in motion? Granted they are not traveling through wormholes.
askscience
http://www.reddit.com/r/askscience/comments/18lf07/what_is_to_prevent_a_spaceship_like_the_uss/
{ "a_id": [ "c8fsryd" ], "score": [ 2 ], "text": [ "Nothing is stopping you from hitting things. But keep in mind a) that space is really really empty, and b) it's science fiction. It's usually explained that they aren't traveling through normal space as such (hyperspace/subspace), so they can't h...
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[ [] ]
qxog0
If energy can't be created, what's happening in this scenario?
Imagine we have an area of empty space with two planets close to each other, lets say about a moons distance apart, they start out still but soon fall towards each other, they don't orbit or spin, when they collide a huge amount of energy will be released. No mass was converted, the gravity of the two planets remains ...
askscience
http://www.reddit.com/r/askscience/comments/qxog0/if_energy_cant_be_created_whats_happening_in_this/
{ "a_id": [ "c419ly1" ], "score": [ 25 ], "text": [ "It came from separating them in the first place. This resulted in the potential energy that was converted into kinetic energy as the planets attracted each other. " ] }
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[ [] ]
42hp0g
weightlessness scenes in movies
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/42hp0g/eli5_weightlessness_scenes_in_movies/
{ "a_id": [ "czadlsp" ], "score": [ 3 ], "text": [ "I don't know what they did for the expanse, but Apollo 13 was filmed on the vomit comet, it took several hundred runs according to [IMDB](_URL_0_)" ] }
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[ [ "http://www.imdb.com/title/tt0112384/trivia?item=tr0775381" ] ]
4rdg2w
the recent cs:go gambling drama with differnt streamers and the website csgo lotto
So What actually happend there ? The only thing i know is that the website has no gambling permit like other csgo website and allow kids to gamble. What is exactly happening there and whats make it illegal ( except dont have gambling permit ) ?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4rdg2w/eli5the_recent_csgo_gambling_drama_with_differnt/
{ "a_id": [ "d50505y", "d509qat" ], "score": [ 4, 2 ], "text": [ "_URL_0_\n\nthis explains a lot. You can't gamble on your own site. You can't advertise for something you own without expressly stating you own it.", "Let's say I have a casino. But I ignore all the laws that restrict ga...
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[ [ "https://www.reddit.com/r/gaming/comments/4r4luf/deception_lies_and_csgo_h3h3productions/" ], [] ]
41vhz9
why it took this long to find another planet behind pluto?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/41vhz9/eli5_why_it_took_this_long_to_find_another_planet/
{ "a_id": [ "cz5g312" ], "score": [ 2 ], "text": [ "The further out you go, the less light planets reflect and the harder it is to see them against the backdrop of the stars. Pluto was only discovered with very painstaking comparison of images of the sky, with it very faintly moving between images...
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28yrrs
how does gmail's undo a sent email feature work?
I have some comp sci background from Uni, but didn't focus on networking and this feature seems very interesting to me and I can't imagine how it works.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/28yrrs/eli5_how_does_gmails_undo_a_sent_email_feature/
{ "a_id": [ "cifqfbp" ], "score": [ 8 ], "text": [ "they send the mail not instantly, they hold it back for a moment. if you decide not to send the mail it had never left your mailbox." ] }
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x4a1m
how is beer made
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/x4a1m/how_is_beer_made/
{ "a_id": [ "c5j1upc", "c5j21lg" ], "score": [ 6, 2 ], "text": [ "I make beer and wine so I guess I should chime in on this one.\n\nFirst, let's look at the basic ingredients:\n1. Grain\n2. Water\n3. Hops\n4. Yeast\n\nThe basic overall concept is to get the yeast to eat what's in the grain...
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[ [], [] ]
2lwp9v
How did the hubble space telescope not move when talking this photo?
In regards to this post. _URL_0_ You would think that some sort of gravitational force would distort the photo and it would be blurry considering it was pointing at the same direction for 4months. Don't know if I'm posting this in the correct sub-reddit. Hope you guys could help =)
askscience
http://www.reddit.com/r/askscience/comments/2lwp9v/how_did_the_hubble_space_telescope_not_move_when/
{ "a_id": [ "clzawga", "clzfiqq" ], "score": [ 5, 3 ], "text": [ "The telescope did move. It was in orbit. It was kept pointed on the same area of the sky. At that distance, the difference in the angle from which the area is viewed when the hubble is on one \"side\" of the earth versus ano...
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[ "https://imgur.com/a/3Y6dB" ]
[ [ "http://en.wikipedia.org/wiki/Hubble_Ultra-Deep_Field#Observations" ], [] ]
pvuvc
Why don't we use the Saturn V anymore?
My father and I are both very interested in space travel. We marvel at the things mankind has been able to accomplish in this field. The Saturn V is the most impressive piece of engineering that has lifted off the ground and has very many potential uses with its insane payload capacity. So why don't we use it anymore? ...
askscience
http://www.reddit.com/r/askscience/comments/pvuvc/why_dont_we_use_the_saturn_v_anymore/
{ "a_id": [ "c3snb24", "c3snneg", "c3sp0hl", "c3spw5x", "c3sr7hg" ], "score": [ 18, 3, 3, 4, 15 ], "text": [ "We don't use the Saturn V because we can't - we don't know how to build them anymore. Oh sure the plans are still there but every engineer who worked on th...
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[ [ "http://en.wikipedia.org/wiki/Wernher_von_Braun", "http://en.wikipedia.org/wiki/Ares_V", "http://en.wikipedia.org/wiki/Space_Launch_System" ], [ "http://en.wikipedia.org/wiki/Saturn_V#Proposed_post-Apollo_developments", "http://en.wikipedia.org/wiki/Comparison_of_orbital_launch_systems" ...
dc29go
What happens in your brain, chemically, when you wake up?
What kind of systems are activated when you go from an unconscious to a conscious state? Which neurotransmitters / other compounds are increased / decreased?
askscience
https://www.reddit.com/r/askscience/comments/dc29go/what_happens_in_your_brain_chemically_when_you/
{ "a_id": [ "f2aqwkq" ], "score": [ 2 ], "text": [ "Sleep and wakefulness is regulated by a group of nuclei in the brainstem called the RAS (reticular activating system). These nuclei produce different chemicals. Some nuclei produce GABA and galanin, which promotes sleep. Other nuclei produce nora...
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345xxy
How did the first ever logic gate chip get made?
Chips like And, or nand, xand, xor, xnor and such, logic gates basically. We currently make them with factories that are already created with these chips but where and how did it start?
askscience
http://www.reddit.com/r/askscience/comments/345xxy/how_did_the_first_ever_logic_gate_chip_get_made/
{ "a_id": [ "crdknzb", "cqu7phb" ], "score": [ 2, 3 ], "text": [ "The first logic gates were made probably on wood blocks somewhere in the late 1800s/early 1900s, out of knife switches and some wires. Today, instead of knife switches, we use transistors. If you have some transistors and a ...
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[ [ "http://en.wikipedia.org/wiki/Field-effect_transistor", "http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/trangate.html" ], [ "http://en.wikipedia.org/wiki/History_of_the_transistor" ] ]
2dwhuu
What Equipment Would a World War Two/ Korean War Tank Crew Have Inside Their Vehicle?
I've been working on a writing project and the subject of tank crews comes up several times. I was just curious what kind of equipment crews would have inside their vehicles apart from the basic fundamental to operate and repair their vehicles. Apart from personal arms in-case they had to bail out would crews carry gas...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2dwhuu/what_equipment_would_a_world_war_two_korean_war/
{ "a_id": [ "cjtsf62" ], "score": [ 3 ], "text": [ "To give you a rough idea, here's a US M4's crew standing next to it's equipment: _URL_2_\n\n\nHere's someone recounting his experience fighting in WW2 as a tank crewman who trained on an M4 Sherman only to discover he was going to be fighting in ...
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[ [ "https://www.youtube.com/user/TheChieftainWoT", "http://www.bbc.co.uk/history/ww2peopleswar/stories/03/a2310003.shtml", "http://s104.photobucket.com/user/Von_poop/media/album%202/Shermancrew.jpg.html" ] ]
2mxqcp
Since our galaxy is spinning, does the night sky as I see it and the position of the stars gradually move over time?
If so, does it move too slow for me to notice in my lifetime? I assume that since astrology is so old, that they must have been observing the constellations at the time, which we still currently have in our night sky, but have those stars changed or shifted since? (and is there any evidence or older sky maps?) I've ...
askscience
http://www.reddit.com/r/askscience/comments/2mxqcp/since_our_galaxy_is_spinning_does_the_night_sky/
{ "a_id": [ "cm8j863", "cm8on7c" ], "score": [ 13, 2 ], "text": [ "The stars move through our perceived celestial plane, but very very slowly. It's called Proper Motion. Since ancient Egyptian times, Sirius has moved maybe the width of the moon, relative to distance stars.\n\nThe star wit...
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[ [ "http://mintaka.sdsu.edu/faculty/wfw/CLASSES/ASTR640/sagA-movie.gif", "http://upload.wikimedia.org/wikipedia/commons/6/6c/Barnard2005.gif" ], [ "http://www.stellarium.org" ] ]
2zgypu
why is there so much competing information when it comes to fitness? for every weight loss or fitness "fact" you can easily find someone saying the exact opposite, to the point where it's very difficult to find reliable information on fitness/weight loss/diet.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2zgypu/eli5_why_is_there_so_much_competing_information/
{ "a_id": [ "cpistd3", "cpitanv", "cpj7jne" ], "score": [ 3, 3, 3 ], "text": [ "There are a lot of people with very little knowledge or training making a lot of claims. These people, be they famous fitness personalities or just gym trainers, make money by sounding like they know wh...
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[ [], [], [] ]
2v3j2h
Jewish money-lenders: how did they collect?
First off, this is not intended to be anti-Semitic in any way... Second, I apologize for the vagueness regarding time period and region. Anyway, I got on a bit of a mobster kick recently, and realized that violence and loansharking/money-lending tend to go hand in hand. You have to collect your dough from people who d...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2v3j2h/jewish_moneylenders_how_did_they_collect/
{ "a_id": [ "coe88dg", "coec02f", "coeiz05" ], "score": [ 488, 57, 28 ], "text": [ "Jews were most certainly banned from the use of organized violence, that privilege only belonged to lords or kings. However, because Jewish merchants loaned money to these most powerful groups, they...
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[ [], [], [] ]
62wqym
How did we get 3n+1 and n/2 for the operations in the collatz conjecture?
askscience
https://www.reddit.com/r/askscience/comments/62wqym/how_did_we_get_3n1_and_n2_for_the_operations_in/
{ "a_id": [ "dfr1ec2" ], "score": [ 4 ], "text": [ "Because that's the conjecture. If you change them, it's a different conjecture.\n\nNote that they work particularly well because 2 and 3 are relatively prime, and the concept of \"even/odd\" is well understood, even by those casually familiar wi...
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1vekrm
If samples were brought back from every planet (and including Pluto), what would each one smell like?
askscience
http://www.reddit.com/r/askscience/comments/1vekrm/if_samples_were_brought_back_from_every_planet/
{ "a_id": [ "ceronvy", "cerp7a8" ], "score": [ 2, 25 ], "text": [ "I don't know about the planets, but according to [Buzz Aldrin](_URL_0_) the moon dust smelled like burnt gun powder. Keep in mind that a portion of these smells comes from minerals being oxidized by water or oxygen.", "...
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[ [ "http://www.telegraph.co.uk/science/space/5852237/Apollo-11-Moon-landing-ten-facts-about-Armstrong-Aldrin-and-Collins-mission.html" ], [] ]
3bcyo1
the shape of bread
Why is the shape of bread not a square, but has an M shaped curve near the top.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3bcyo1/eli5_the_shape_of_bread/
{ "a_id": [ "csl0ico" ], "score": [ 6 ], "text": [ "The split in the top is a line cut into the top by the baker. As the yeast in the bread is warmed, it bursts into activity and releases a bunch of gas causing the bread to rise. As it rises above the edges of the pan, it starts to spill over. ...
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7trtgl
Why does the human brain contain folds? Are they indicative of something else?
askscience
https://www.reddit.com/r/askscience/comments/7trtgl/why_does_the_human_brain_contain_folds_are_they/
{ "a_id": [ "dtf3xqc", "dtf3zwx" ], "score": [ 9, 3 ], "text": [ "sucli and gyri (the grooves and ridges, respectively) exist to increase surface area of the neocortex. This allows for more grey matter, which is where things like spacial reasoning, decision making, language, and most 'int...
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1y2jro
Is there a scientific definition of sentience - and at what age/stage do humans achieve it?
askscience
http://www.reddit.com/r/askscience/comments/1y2jro/is_there_a_scientific_definition_of_sentience_and/
{ "a_id": [ "cfgvjga" ], "score": [ 20 ], "text": [ "As this is tagged \"Psychology\", I don't think the field offers a definitive, or close-to-definitive, answer to this question. While Developmental Psychology offers a few different explanations (whether you're a Piaget follower, or a Erickson ...
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1c1ble
Will plant life feed off of increased CO2 levels in the atmosphere? Is Le Chattelier's principle applicable?
askscience
http://www.reddit.com/r/askscience/comments/1c1ble/will_plant_life_feed_off_of_increased_co2_levels/
{ "a_id": [ "c9c9m00" ], "score": [ 2 ], "text": [ "CO2 isn't typically the primary factor determining net ecosystem productivity. Instead, the availability of precipitation, the diurnal temperature range, and soil nutrients set the overall uptake carbon dioxide by the environment." ] }
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53p3re
I'm aware that Hitler punished the mentally disabled, but did this also include those with mental illnesses such as depression and anxiety?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/53p3re/im_aware_that_hitler_punished_the_mentally/
{ "a_id": [ "d7v8j7x", "d7v8qwq" ], "score": [ 5, 3 ], "text": [ "Generally speaking, no, but that really depends on the severity of the depression or anxiety (or both) in a patient. \n\nSome background: At the time Aktion Tiergartenstraße 4, the programme of euthanasia used on those consi...
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[ [], [] ]
g1ao41
how come we instantly recognize faces (the eyes, nose, and mouth) when we look at a certain arrangement of objects?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/g1ao41/eli5_how_come_we_instantly_recognize_faces_the/
{ "a_id": [ "fneeq07" ], "score": [ 5 ], "text": [ "Basically our brain is tuned into finding patterns and faces, even where there are none. \n\nHere is the link:\n\n_URL_0_" ] }
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[ [ "https://en.m.wikipedia.org/wiki/Pareidolia" ] ]
2ne9ze
when an active, obese person gets liposuction and surgery to get rid of the extra skin, are they muscular underneath all the fat because of how much weight they had to carry before?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2ne9ze/eli5_when_an_active_obese_person_gets_liposuction/
{ "a_id": [ "cmcu0v7" ], "score": [ 2 ], "text": [ "Probably not. Chances are, the obese person moves everywhere quite slowly and struggles up steps - just like you would if you were carrying an extra 100-200 pounds. Their muscles may be slightly stronger, but it's not significant or enough to gen...
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2v0aqk
Do humans also emit radiation at lower frequencies than infrared? (microwaves, radio, etc)
askscience
http://www.reddit.com/r/askscience/comments/2v0aqk/do_humans_also_emit_radiation_at_lower/
{ "a_id": [ "codgm0e" ], "score": [ 10 ], "text": [ "Yes, humans emit radio waves and microwaves due to thermal emission, but only a very small amount compared to infrared waves. Take a look at these [thermal radiation spectral curves](_URL_0_). The curves just keep going out to longer and longer ...
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[ [ "http://upload.wikimedia.org/wikipedia/commons/1/19/Black_body.svg" ] ]
266tct
Is a functioning human brain hot?
If I carefully open up a living person's cranium revealing his brain, and then touch it, would it feel hot in the touch? I mean, it's a working computer after all.
askscience
http://www.reddit.com/r/askscience/comments/266tct/is_a_functioning_human_brain_hot/
{ "a_id": [ "chocu8m" ], "score": [ 2 ], "text": [ "Yes, the brain does dissipate around [20 or 25 watts](_URL_1_). It would also be warm because blood from other organs is bringing their heat and taking some away. The whole human dissipates around [100 watts](_URL_0_)." ] }
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[ [ "https://en.wikipedia.org/wiki/Human_equivalent#Human_energy_usage_and_conversion", "http://oscar.virginia.edu/researchnews/x15842.xml" ] ]
48gvhl
Is there a possible scenario where two events, A and B, can occur as: A then B, A and B simultaneously, and B then A, all using three different relativistic frames?
~~It's been a while since I've caught up with GR.~~ Say two events occur: A and B. Is it possible to have a frame R experience A then B, a frame R' experience A and B simultaneously, and a frame R'' experience B then A, all within our universe of physics? I am unsure if this would imply that it is simply three frames w...
askscience
https://www.reddit.com/r/askscience/comments/48gvhl/is_there_a_possible_scenario_where_two_events_a/
{ "a_id": [ "d0jka5e", "d0jnaqo" ], "score": [ 46, 9 ], "text": [ "Let's answer this in SR. Forget about GR.\n\nGiven two events A and B, we can consider the invariant spacetime interval between them:\n\n > (Δs)^(2) = -(Δt)^(2)+(Δx)^(2)+(Δy)^(2)+(Δz)^(2)\n\nThe notation \"Δt\" means the d...
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[ [], [ "https://en.wikipedia.org/wiki/Relativity_of_simultaneity#/media/File:Relativity_of_Simultaneity_Animation.gif" ] ]
1wz7dl
why can i go a day without food at home but when i am at school i feel so hungry after a lesson?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1wz7dl/eli5_why_can_i_go_a_day_without_food_at_home_but/
{ "a_id": [ "cf6pa4r", "cf6pg4b", "cf6ph1h", "cf6plrh", "cf6pqbg", "cf6wd2m" ], "score": [ 4, 3, 3, 3, 2, 3 ], "text": [ "Possibly because you are much more active at school/see other kids eating/smelling more food?", "Just a sidenote: It is the opposite...
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[ [], [], [], [ "http://youtu.be/5NubJ2ThK_U" ], [], [] ]
17y66y
Is battery technology going to get better anytime soon or should we expect Lithium batteries to be our best option for the next couple decades?
It seems as though battery technology moves at the speed of molasses compared to other fields. Even though lithium batteries are GREAT relative to our other current options available commercially, I am still hoping for energy density to get much, much better. Am I dreaming? It seems like it takes decades for inventi...
askscience
http://www.reddit.com/r/askscience/comments/17y66y/is_battery_technology_going_to_get_better_anytime/
{ "a_id": [ "c8aifq8" ], "score": [ 2 ], "text": [ "The US DoEnergy has a [project](_URL_2_) to increase automotive batteries' capacity 5-fold, in 5 years and have batteries 1/5 their current cost. A battery researcher in my office says their project is achievable.\n\nOther elements they're lookin...
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[ [ "http://cleantechnica.com/2012/12/03/toyota-pursues-magnesium-ion-batteries-due-to-breakthrough/", "http://en.wikipedia.org/wiki/Sodium-ion_battery", "http://www.hybridcars.com/energy-department-backs-plan-develop-five-times-stronger-ev-battery-65781" ] ]
e0kurs
why does heartburn become more of an issue when you get older?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/e0kurs/eli5_why_does_heartburn_become_more_of_an_issue/
{ "a_id": [ "f8etgcj", "f8eyltk" ], "score": [ 4, 2 ], "text": [ "It's not so much your increasing age that makes it a problem, it's the recurrence. The longer you suffer from chronic heartburn or GERD, the more damage occurs to your esophagus. As a result this increases your risk of heig...
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[ [], [] ]
imtxu
Is it possible for blood type to change?
I recently donated blood again: the last time I did it was in 1996. When I received my donor card today, it informed me that my blood type is A+. I am certain that I was born O. It was O when I had my blood drawn the first time. I did have a pregnancy, my son has type AB blood: is it possible that my blood type chan...
askscience
http://www.reddit.com/r/askscience/comments/imtxu/is_it_possible_for_blood_type_to_change/
{ "a_id": [ "c251fmd", "c2529az", "c252hgx" ], "score": [ 4, 3, 3 ], "text": [ "You should probably get that double checked.", "The genetics of your blood type cannot change. But in some situations it's possible for the expressed antigens to change, which means the measured typ...
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[ [], [], [] ]
1ur928
What were some the leading theories on magnets until we learned about electromagnetism?
Before we knew anything about how they work how did people view their spooky behaviour? How have magnets been utilised across different cultures throughout history?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1ur928/what_were_some_the_leading_theories_on_magnets/
{ "a_id": [ "cel2mxv" ], "score": [ 2 ], "text": [ "The pre-Socratic philosopher Thales of Miletus seems to have believed that magnets contained souls because they can move and be moved without any apparent outside force. This was a result of his belief that the soul was a cause of motion.\n\nHowe...
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2l0phx
What characteristics of a medium affect its permittivity?
For example, what attributes does water possess that gives a relative permittivity of 80 while a vacuum is 1 and glass 5?
askscience
http://www.reddit.com/r/askscience/comments/2l0phx/what_characteristics_of_a_medium_affect_its/
{ "a_id": [ "clqpgzt" ], "score": [ 2 ], "text": [ "Permittivity is related to the polarizability and density of the medium which determines how much how much of a dielectric effect that medium can generate--which is modulated by the effective permittivity. Here's a little write up I did awhile ba...
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[ [ "http://www.feynmanlectures.caltech.edu/II_32.html", "http://www.reddit.com/r/askscience/comments/2dywdd/does_the_density_of_mediums_affect_the_refractive/cjufrie" ] ]
27gqbv
How did miners during the middle ages find metal ore deposits to mine?
Was it just dumb luck? Did they know what to look for?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/27gqbv/how_did_miners_during_the_middle_ages_find_metal/
{ "a_id": [ "ci0no0d", "ci0q37f" ], "score": [ 7, 61 ], "text": [ "Hi! More input on this is welcome, but meanwhile, get started on this section of the FAQ (link on sidebar) :\n\n[Mineral resource extraction](_URL_0_) ", "Georgius Agricola wrote *De Re Metallica* in the mid-1500s, whic...
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[ [ "http://www.reddit.com/r/AskHistorians/wiki/economics#wiki_mineral_resource_extraction" ], [ "http://www.gutenberg.org/ebooks/38015" ] ]