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vii20
Is there anything that can be done to increase our ability to learn as we get older?
I wasted some time in my late teens and early twenties. Now I am trying to get back into the swing of things. I am eating healthily, studying, and practicing the skills that I want to improve. I realize this would be variable for each person and their learning styles, and also the skill they are trying to learn, but...
askscience
http://www.reddit.com/r/askscience/comments/vii20/is_there_anything_that_can_be_done_to_increase/
{ "a_id": [ "c54svgv", "c54tx6m", "c54uucf" ], "score": [ 8, 5, 2 ], "text": [ "You might want to look into neuroplasticity. Just by learning to do different activities you can more readily pick up other sources of information. You do have a max capacity, but the brain is able to m...
[]
[]
[ [], [ "http://www.youtube.com/watch?v=UyPrL0cmJRs&feature=player_detailpage#t=3130s" ], [] ]
2f6bll
how are breathalysers accurate? if i took a shot and immediately blew into it, wouldn't it read my bac somewhere around ~15%?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2f6bll/eli5how_are_breathalysers_accurate_if_i_took_a/
{ "a_id": [ "ck6ak6l", "ck6akdf", "ck6avm7", "ck6fbgt", "ck6ivr7" ], "score": [ 2, 2, 4, 8, 2 ], "text": [ "The people administering the breathalyzer are instructed not to let the subject be swigging alcohol during the test itself.", "Yes it would. But then by t...
[]
[]
[ [], [], [], [], [] ]
5b2a5o
what is the dark (or deep) net?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5b2a5o/eli5what_is_the_dark_or_deep_net/
{ "a_id": [ "d9l7n3c", "d9l97ns", "d9lacbd" ], "score": [ 2, 5, 3 ], "text": [ "The 'deep web' is a name for all the sites on the Internet that are not available through Google or other usual search engines. They block those sites usually because of the illegal activity that occur...
[]
[]
[ [], [], [ "http://climateviewer.org/3D/", "http://climateviewer.org/3D/index.html?layersOn=mrm-91" ] ]
ncck3
why wouldn't indefinite military detentions of us citizens under the ndaa simply be struck down by the supreme court as unconstitutional?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/ncck3/eli5_why_wouldnt_indefinite_military_detentions/
{ "a_id": [ "c37yqr2", "c37z0we", "c37z452", "c37zopi", "c380kug", "c37yqr2", "c37z0we", "c37z452", "c37zopi", "c380kug" ], "score": [ 7, 6, 3, 3, 3, 7, 6, 3, 3, 3 ], "text": [ "I think part of the concern of those opposing th...
[]
[]
[ [], [], [], [], [], [], [], [], [], [] ]
4irwi3
Was inbreeding an issue in non-European nobility?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/4irwi3/was_inbreeding_an_issue_in_noneuropean_nobility/
{ "a_id": [ "d31f7fx" ], "score": [ 3 ], "text": [ "Famously in the case of Cleopatra. She had many fewer immediate ancestors than most people: three of her four great-grandfathers were the same person, Ptolemy VIII. The fourth was his son, Ptolemy IX. \n\n" ] }
[]
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[ [] ]
9hy5sg
how does "supply lead" economics work?
From what I've been told, business get tax cuts that allow them to reinvest more money into R & D allowing them to make better and cheaper products correct? Better and cheaper products would then lead to price reduction and increased availability to the masses as well as a desired improvement upon existing products. ...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9hy5sg/eli5_how_does_supply_lead_economics_work/
{ "a_id": [ "e6fk8yw", "e6gcxue" ], "score": [ 3, 2 ], "text": [ "Lower taxes to businesses and the wealthy. They invest in business, open new factories, hire new low income workers to drive the economy. \n\nThere are a couple inherent issues with this. 1: not all of the money from tax ...
[]
[]
[ [], [] ]
4nhwga
In middle school we learn that F=ma, but is force really unrelated to velocity?
[deleted]
askscience
https://www.reddit.com/r/askscience/comments/4nhwga/in_middle_school_we_learn_that_fma_but_is_force/
{ "a_id": [ "d4414uv", "d441ovf" ], "score": [ 7, 2 ], "text": [ " > In middle school we learn that F=ma, but is force really unrelated to velocity?\n\nAcceleration is the rate-of-change (called a *derivative*) of velocity, so force is certainly related to velocity in that equation: the fo...
[]
[]
[ [], [] ]
1vurup
why are there more benefits to having an active life style versus a sedentary one?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1vurup/why_are_there_more_benefits_to_having_an_active/
{ "a_id": [ "cevyko9", "cew0huk", "cew0uql", "cew1pig" ], "score": [ 3, 2, 2, 3 ], "text": [ "We're built to be active creatures. In nature if you sit down and do nothing all day every day, you end up with a severe case of dead very quickly. ", "Increased muscle mass/fu...
[]
[]
[ [], [], [], [] ]
qmikj
Filling up your Gas tank when its Cool Vs Hot
In my office we are having a debate about this. I'm maintaining that I was told that if you fill up your gas tank in the morning when it is cool you get More gas than if you were to fill up when its Warm/Hot even if the meter says 1 Gallon. Is this True and whats the Science behind it?
askscience
http://www.reddit.com/r/askscience/comments/qmikj/filling_up_your_gas_tank_when_its_cool_vs_hot/
{ "a_id": [ "c3yvd27" ], "score": [ 8 ], "text": [ "Ok so Ph.D. chemical eng here who worked 9 years making gasoline. Yes its true that gasoline becomes somewhat more dense as it cools. However, the thing to realize is that gasoline is stored underground in tanks. So the temperature does not mo...
[]
[]
[ [ "http://en.wikipedia.org/wiki/Fuel_dispenser", "http://www.snopes.com/inboxer/household/gastips.asp" ] ]
2wjt5h
Is the outcome of random events determined by previous random events?
If I flip a coin and i get heads, will the chance to get heads next time decrease? Is there anything like the conservation of energy, but for information? If yes, then how relevant is the fact that next time I'll flip the coin is in a few years instead of a few seconds? Is this even science or I'm asking this on the wr...
askscience
http://www.reddit.com/r/askscience/comments/2wjt5h/is_the_outcome_of_random_events_determined_by/
{ "a_id": [ "corkdxl" ], "score": [ 4 ], "text": [ "In general it is possible for the probability of observing a random event to depend on the observation of a different event at some time in the past. Take a simple example where you have a system that can have two states a, and b. Furthermore let...
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[]
[ [] ]
3grroo
Are Turks who live in Turkey today genetically mostly Turkicized Greeks, Armenians and Slavs?
Most of them don't look like Turks who live in Central Asia.
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/3grroo/are_turks_who_live_in_turkey_today_genetically/
{ "a_id": [ "cu0yukf", "cu26vb3" ], "score": [ 7, 2 ], "text": [ "In short, yes. \nThe slightly longer answer is \"and Kurds, and Arabs and Laz and Circassians and Lydians etc.\"\n\nThe Turks assimilated the peoples of Anatolia, some completely, some partially.\n\n[This other question] (_...
[]
[]
[ [ "https://www.reddit.com/r/AskHistorians/comments/3g9ijs/how_was_anatolia_convertedcleansed_so_easily_by/" ], [] ]
2q04qk
why are some subreddits private? and how do you gain access to these subs?
Just really curious R.I.P inbox, It was nice knowing you edit: this thread is my highest rated post + has my highest rated comment, nice one reddit!
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2q04qk/eli5_why_are_some_subreddits_private_and_how_do/
{ "a_id": [ "cn1leja", "cn1m2rr", "cn1r2l6", "cn1rrln", "cn1ui4i", "cn1un2r", "cn1upx5", "cn1v6bl", "cn1va6v", "cn1vfc8", "cn1vfnj", "cn1vm87", "cn1vsl4", "cn1wahd", "cn1x0bh", "cn1x1h3", "cn1xofz", "cn1yge2", "cn1z9iq", "cn1zdft", "c...
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[ [], [], [], [ "http://www.reddit.com/message/compose?to=%2Fr%2Fhotelemployees", "http://www.reddit.com/message/compose?to=%2Fr%2FNightAudit" ], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [ "https://docs.go...
6948ml
how can we "focus" on a specific sound (i.e voice) just by looking at the object (i.e person)?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6948ml/eli5_how_can_we_focus_on_a_specific_sound_ie/
{ "a_id": [ "dh3mgei", "dh3mkat", "dh44s8z", "dh45377" ], "score": [ 5, 3, 4, 2 ], "text": [ "Good question. I'm a current university student and my professor that I am actually beginning research with is studying auditory neuroscience and this was one of his areas. This ...
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[]
[ [], [], [ "https://www.youtube.com/watch?v=GCtTtKKAhyE", "https://www.youtube.com/watch?v=G-lN8vWm3m0" ], [] ]
93clx7
why can't we just use mac addreses instead of the ip addreses?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/93clx7/eli5_why_cant_we_just_use_mac_addreses_instead_of/
{ "a_id": [ "e3c9i8n", "e3ca6if" ], "score": [ 39, 3 ], "text": [ "A MAC address is unique identifier, but it doesn't tell you anything about *where* a device is. IP addresses are structured, routers can infer from the address which way it needs to send the message to get it towards its de...
[]
[]
[ [], [] ]
5cpxqv
why does smoking cigarettes make my hangover seem a thousand times worse?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5cpxqv/eli5_why_does_smoking_cigarettes_make_my_hangover/
{ "a_id": [ "d9yf8gw", "d9yfyex", "d9yi1fx", "d9yild2", "d9yo478" ], "score": [ 8, 47, 3, 5, 6 ], "text": [ "You need water and salt to replace what you lost metabolizing alcohol, instead you put nicotine in your system, further dehydrating you and causing your meta...
[]
[]
[ [], [ "https://www.ncbi.nlm.nih.gov/pubmed/21452920" ], [], [], [] ]
33161v
why does gas in the united states contain 10% ethanol?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/33161v/eli5_why_does_gas_in_the_united_states_contain_10/
{ "a_id": [ "cqgkfip", "cqgkkan", "cqgpf4g", "cqgx5pg" ], "score": [ 76, 31, 7, 6 ], "text": [ "It was supported by environmentalists under the belief that it could replace oil and be amazing for the environment. Farmers loved it because it created a huge demand for their c...
[]
[]
[ [], [], [], [] ]
5gjg06
since all crop-lands are being overfarmed, and nutrients are being drained, what will happen when all these nutrients are completely drained? or will that point ever come?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5gjg06/eli5since_all_croplands_are_being_overfarmed_and/
{ "a_id": [ "dasqvs5", "dasr3uf", "dassta7" ], "score": [ 2, 4, 6 ], "text": [ "Farmers use a method called \"crop rotation\" to ensure nutrients are replenished in soil.\n\nSome plants provide more nutrients than they take, and some take more than they provide. By rotating these t...
[]
[]
[ [], [], [] ]
1bddbd
Is it possible to make a spherical Prince Rupert's drop in a weightless environment?
askscience
http://www.reddit.com/r/askscience/comments/1bddbd/is_it_possible_to_make_a_spherical_prince_ruperts/
{ "a_id": [ "c95ug41" ], "score": [ 2 ], "text": [ "A Prince Rupert's drop has two main components: the fragile tail, and the strong bulb. Both parts are formed due to the tensile/compressive internal forces acting within the glass, and are stronger than their non-tempered equivalents. Any crack...
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[]
[ [] ]
4hk3dj
How are smoke particles formed from combustion?
What process takes place? Are there any phase changes or does the heat simply break whatever we're burning into smaller pieces?
askscience
https://www.reddit.com/r/askscience/comments/4hk3dj/how_are_smoke_particles_formed_from_combustion/
{ "a_id": [ "d2qshmf" ], "score": [ 3 ], "text": [ "When you burn a fuel, what you're actually doing is giving it enough energy to react with the oxygen in the air, the products of this reaction are more stable - they don't continue to get oxidised.\n\nFor a basic hydrocarbon the products of compl...
[]
[]
[ [ "http://www.bsquaredfutures.com/pluginfile.php/273/mod_imscp/content/1/lo_4-1-scorm/lo_4-1-scorm/images/bunsen_flames.jpg", "http://www.noaanews.noaa.gov/stories2011/images/controlledburnuscg.jpg" ] ]
4bwrvl
the connection/growth from al-qaeda into isil
As someone who only partially pays attention to foreign affairs, can someone please explain the grow or connection from Al-Qaeda into ISIL.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4bwrvl/eli5_the_connectiongrowth_from_alqaeda_into_isil/
{ "a_id": [ "d1d28el", "d1d44ez", "d1d5w8c", "d1dd1hh" ], "score": [ 2, 2, 8, 2 ], "text": [ "ISIL was a separate group from Al Qaeda (the group responsible for 9/11) we used to refer to as \"Al Qaeda In Iraq.\" This was a group that Saddam Hussein kept in check. After th...
[]
[]
[ [], [], [], [ "https://www.youtube.com/watch?v=pzmO6RWy1v8" ] ]
2p38yu
How do large northern cities get their drinking water when rivers are frozen in winter?
askscience
http://www.reddit.com/r/askscience/comments/2p38yu/how_do_large_northern_cities_get_their_drinking/
{ "a_id": [ "cmt1s1x", "cmt27yw" ], "score": [ 15, 4 ], "text": [ "There are no substantial cities in areas where rivers do completely freeze (this would only occur for small rivers in the extreme northern arctic, if it does occur). On the majority of the globe, even if the surface of a ri...
[]
[]
[ [], [ "http://what-if.xkcd.com/121/" ] ]
ngwmk
what are torrent trackers?
What exactly are torrent trackers? How do they work, and what is BaconBits?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/ngwmk/eli5_what_are_torrent_trackers/
{ "a_id": [ "c38zox6", "c38zox6" ], "score": [ 7, 7 ], "text": [ "_URL_0_\n\n_URL_1_\n\ntry using the search", "_URL_0_\n\n_URL_1_\n\ntry using the search" ] }
[]
[]
[ [ "http://www.reddit.com/r/explainlikeimfive/comments/jpay6/eli5_in_terms_of_piracy_what_are_trackers/", "http://www.reddit.com/r/explainlikeimfive/comments/j9ux7/seeding_leeching_trackers_someone_please_explain/" ], [ "http://www.reddit.com/r/explainlikeimfive/comments/jpay6/eli5_in_terms_of_piracy...
7y3iyc
The Society of Jesus (Jesuits) seem to be highly regarded in terms of their educational efforts. What made their efforts particularly noteworthy compared to those of other religious congregations?
The efforts of the Society of Jesus in the field of education seem to be frequently highlighted as one of their defining characteristics. Why are they noteworthy compared to those taken by other religious congregations? Are there any good books on the subject of Jesuit education?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/7y3iyc/the_society_of_jesus_jesuits_seem_to_be_highly/
{ "a_id": [ "dudgu22", "dufswqg", "duk416j" ], "score": [ 68, 3, 3 ], "text": [ "(Disclaimer: my Jesuit wheelhouse is mostly 16th and 17th century, so I can't help much with post-papal-suppression-and-comeback Jesuit education in the 19th/20th centuries.)\n\n\nIn an Early Modern co...
[]
[]
[ [ "http://booksandjournals.brillonline.com/content/journals/10.1163/22141332-00103003", "http://www.bc.edu/sites/libraries/ratio/ratio1599.pdf", "http://booksandjournals.brillonline.com/content/journals/10.1163/22141332-00301002" ], [], [] ]
3v7mn1
Do different cultures have different taste buds?
Like do people from India have taste buds that are physically different than say, an Americans so they can eat spicier food?
askscience
https://www.reddit.com/r/askscience/comments/3v7mn1/do_different_cultures_have_different_taste_buds/
{ "a_id": [ "cxlbvy1" ], "score": [ 6 ], "text": [ "There is no difference in tastes buds, but there is a difference in what is considered flavorful. This is determined by what the settlers of the area were able to eat during the early years of development. Things taste bad because your body belie...
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[]
[ [] ]
12gg2p
Why do I gaze at people's mouths more than their eyes when they are speaking to me?
I've wondered this for quite some time but have never found anything useful online or in journals or books to explain this to me. I have been told on many occasions that I do not look people directly in the eye when we are having a conversation, and when I am conscious of this, I notice that I seem to fixate on their ...
askscience
http://www.reddit.com/r/askscience/comments/12gg2p/why_do_i_gaze_at_peoples_mouths_more_than_their/
{ "a_id": [ "c6utjft" ], "score": [ 4 ], "text": [ "It could be because you are hard of hearing. I've had horrible hearing since high school and regularly look at people's mouth as they talk to read lips." ] }
[]
[]
[ [] ]
as5pbh
what are carbon credits and how do companies use them to offset their carbon footprint?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/as5pbh/eli5_what_are_carbon_credits_and_how_do_companies/
{ "a_id": [ "egrysxp", "egrz5xz" ], "score": [ 6, 2 ], "text": [ "One steam plant in NC releases 1000 pounds of pollution per day.\nThe other plant in the same company on the other side of the state releases 300 per day.\n\nThe limit under the carbon exchange is 1000 per day, per plant.\n\...
[]
[]
[ [], [] ]
6k9mpn
why are we encouraged to have good posture but then car and airplane seats are shaped in such a way that they do the opposite?
Seats like this are shaped in a concave way that turns my spine into pudding or is just plain uncomfortable. Its always bothered me.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6k9mpn/eli5_why_are_we_encouraged_to_have_good_posture/
{ "a_id": [ "djket2m" ], "score": [ 3 ], "text": [ "It's important to know that \"good posture\" is a Victorian esq idea of how you should stand and sit as to look \"proper\". It has nothing to do with what your back wants or needs.\n\nModern research tells us that humans should slouch in chairs, ...
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[]
[ [] ]
2g5uuz
how can i type correctly on the keyboard without looking but i won't be able to tell you where the keys are?
I can type essays without looking on the keyboard. But when asked where to find a letter on the keyboard, i have no idea
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2g5uuz/eli5how_can_i_type_correctly_on_the_keyboard/
{ "a_id": [ "ckfx92n", "ckfzq3p", "ckg3qon", "ckg76ps" ], "score": [ 14, 2, 2, 6 ], "text": [ "Muscle memory. Your hands have typed \"e\" so many times that you've sort of \"programmed\" your muscles to reach X inches in Y direction and press down for \"e\". You, consciousl...
[]
[]
[ [], [], [], [] ]
9j2yc4
what are 'fuzzy mathematics' and what are its applications?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9j2yc4/eli5_what_are_fuzzy_mathematics_and_what_are_its/
{ "a_id": [ "e6o9yd7", "e6oafol", "e6oas0k", "e6oazdq", "e6oazzr", "e6obmui", "e6oeqhu", "e6oslhs", "e6p6jac", "e6pp74b" ], "score": [ 171, 3, 2, 5, 43, 6, 2, 2, 2, 2 ], "text": [ "'Fuzzy' is a term used to indicate that you'r...
[]
[]
[ [], [], [], [ "https://en.wikipedia.org/wiki/Fuzzy_mathematics" ], [ "http://www.cs.utep.edu/vladik/2013/tr13-31.pdf" ], [], [], [], [], [] ]
1pcq1r
what is corn syrup and why is it in so much of our food?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1pcq1r/eli5_what_is_corn_syrup_and_why_is_it_in_so_much/
{ "a_id": [ "cd10un4", "cd10z4h", "cd114k3", "cd15va8", "cd167ia", "cd16sfs" ], "score": [ 27, 68, 14, 3, 2, 2 ], "text": [ "The US government subsidizes corn, so its cheaper to grow tons of it and turn into the syrup then it is to grow and harvest actual su...
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[]
[ [], [ "http://en.wikipedia.org/wiki/High-fructose_corn_syrup_and_health" ], [], [], [ "http://drhyman.com/blog/2011/05/13/5-reasons-high-fructose-corn-syrup-will-kill-you/" ], [ "http://www.learnliberty.org/videos/why-is-there-corn-in-your-coke", "http://www.learnliberty.org/videos/how...
2uj0kg
how can the government assure people of 'higher wages' when those wages are determined by the employers?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2uj0kg/eli5_how_can_the_government_assure_people_of/
{ "a_id": [ "co8sw7m", "co8tsk1", "co8tzyz", "co8yk8e" ], "score": [ 2, 2, 3, 2 ], "text": [ "Minimum wage is determined by the law, not by employers.", "Our wonderful Communist Governments can do magical things.\n\nIn all seriousness, yes you are right a free labor mar...
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[]
[ [], [], [], [] ]
2lpw45
Let's get a more general question on this sub. When did you guys decide you want to study history? What opportunities are now open to you now that you've studied it?
Some more questions: -Did you get a degree? If so, where? -What job do you have related to history? -What books pertaining to your field of study would you recommend? -What can I do with a history degree? I'm a junior in high school and have been considering studying history in college for a long time. I have ...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2lpw45/lets_get_a_more_general_question_on_this_sub_when/
{ "a_id": [ "clx8cqj", "clx8ei4", "clx9ci7", "clxaapy", "clxef1u", "clxl8qn", "clxta7m", "clxtzb2", "clxu1d5", "clya56x" ], "score": [ 5, 5, 3, 2, 3, 3, 3, 2, 2, 2 ], "text": [ "I hate to be the ruiner of fun, but I think the ...
[]
[]
[ [], [], [ "http://books.google.com/books/about/Nearby_History.html?id=GXqkV1hFfXAC", "http://www.amazon.com/Mni-Sota-Makoce-Land-Dakota/dp/0873518691" ], [], [], [], [], [], [], [ "http://www.history.org.uk/resources/public_resource_2914_76.html" ] ]
73r4x6
Is there any theories as to how large the unobservable universe is? If so, what are they?
askscience
https://www.reddit.com/r/askscience/comments/73r4x6/is_there_any_theories_as_to_how_large_the/
{ "a_id": [ "dnsvoae", "dnvh78f" ], "score": [ 4, 3 ], "text": [ "Unobservable means more than \"we can't see it\". It means \"we can never travel there or measure it\". So in essence, it doesn't exist in our reality, unless there turns out a way to travel faster than light. If so, we have...
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[]
[ [], [] ]
bf9val
Why was being surrounded so bad in antique battles such as Cannae?
For a siege I can understand it, but in cases such as Cannae my understanding is that the Romans had numerical superiority and that the ‘reason’ why Hannibal won was the trick with his center pulling back and his wings advancing to surround the romans. Apparently it is supposed to be obvious that then the battle is los...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/bf9val/why_was_being_surrounded_so_bad_in_antique/
{ "a_id": [ "elcjw0x", "elcnqqa" ], "score": [ 112, 25 ], "text": [ "First, let me give some very broad generalisation that apply to the armies of many ancient societies in Europe and the near east. Obviously, tactics, equipment and formations differed between these societies, but we can o...
[]
[]
[ [], [ "https://sourcebooks.fordham.edu/ancient/polybius-cannae.asp" ] ]
8gziq3
earthen dams, how do they work and are they different from concrete dams?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/8gziq3/eli5_earthen_dams_how_do_they_work_and_are_they/
{ "a_id": [ "dyftlm5" ], "score": [ 2 ], "text": [ "It depends on the type of earth used. A combination of particle sizes (anywhere from large boulders to clay/silt) serve different structural or \"waterproofing\" purposes.\n\nThe dam may be constructed in layers to intentionally address each need...
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[ [] ]
5nwgs6
why is it so difficult to receive an organ transplant?
With the amount of organ donors (around 50%) why does it take years to receive an organ transplant
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5nwgs6/eli5_why_is_it_so_difficult_to_receive_an_organ/
{ "a_id": [ "dcettt1", "dcf3ojp" ], "score": [ 2, 2 ], "text": [ "Organs have to match the recipient otherwise the body can reject the new organ. There are two things to take into consideration and that is blood-type and HLA typing. Blood type is pretty straight forward, ideally the blood ...
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[ [], [] ]
89boxs
we're familiar with the concept of limbs falling asleep due to lack of circulation from the pressure on the limb's veins/arteries in relation to bodily position. i want to know how our brain always manages to wake us up before the extremity loses blood flow long enough to die. [serious]
It's happened to most if not all of us. You wake up in the middle of the night, and your arm is asleep. Your hand is numb, you can't lift the "sleeping" arm on its own, and you proceed to smack it back into feeling. How does your brain know just when to wake you up? Could you theoretically suffer actual limb death, o...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/89boxs/eli5_were_familiar_with_the_concept_of_limbs/
{ "a_id": [ "dwr8z7t" ], "score": [ 3 ], "text": [ "The tingling feelings is due to nerves, not loss of blood flow. Even if you were to completely restrict *arterial* flow, your limbs still diffuse blood, although much more slowly. \n\nIt takes a lot to kill a limb from lack of blood. Unlike your ...
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[ [] ]
1t7esx
Can you recommend a good biography about Alexander Hamilton?
I stumbled across [Lin-Manuel Miranda's rap about Alexander Hamilton](_URL_0_), and it really got me interested in learning more about his life. Thanks in advance!
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1t7esx/can_you_recommend_a_good_biography_about/
{ "a_id": [ "ce54013", "ce597rz" ], "score": [ 11, 4 ], "text": [ "For Hamilton's role as Treasury Secretary I'd recommend Ron Chernow's biography. It's not as strong on Hamilton's role as a soldier in my opinion, or the political situation generally, but it really shows Hamilton's brilli...
[]
[ "http://www.youtube.com/watch?v=WNFf7nMIGnE" ]
[ [], [] ]
96gpy9
If bark is made of cellulose and cellulose is made of glucose, why doesn't it taste sweet?
I was wondering why does bark tastes...well, like bark, if it is made up of glucose.
askscience
https://www.reddit.com/r/askscience/comments/96gpy9/if_bark_is_made_of_cellulose_and_cellulose_is/
{ "a_id": [ "e423hbl" ], "score": [ 4 ], "text": [ "Cellulose is made of beta glucose, which the human body cannot digest. Starch and carbohydrates, etc, are made of alpha glucose, which tastes sweet and we can digest. \n\nThey’re two very similar but different molecules. The only difference is th...
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nxbah
So just how much sand is there?
Carl Sagan is famously quoted as saying > The total number of stars in the Universe is larger than all the grains of sand on all the beaches of the planet Earth. If we estimate the mass of each grain of sand to be roughly 10 milligrams (as per [here](_URL_2_), but the estimate is of course very rough) and the nu...
askscience
http://www.reddit.com/r/askscience/comments/nxbah/so_just_how_much_sand_is_there/
{ "a_id": [ "c3com87", "c3cotob", "c3com87", "c3cotob" ], "score": [ 2, 2, 2, 2 ], "text": [ "An aside, I don't think it's one of those things meant to be taken literally -- it's just a way of imaging astronomical scales. Also, I would guess stars are better defined than sa...
[]
[ "http://blogs.discovermagazine.com/80beats/2010/12/01/the-estimated-number-of-stars-in-the-universe-just-tripled/", "http://www.wolframalpha.com/input/?i=mass+of+earth+in+kilograms", "http://hypertextbook.com/facts/2003/MarinaTheodoris.shtml", "http://www.wolframalpha.com/input/?i=300+sextillion+*+10+milligra...
[ [], [ "http://www.thenakedscientists.com/forum/index.php?topic=19016.0", "https://www.google.com/search?sourceid=chrome&ie=UTF-8&q=how+much+sand+is+on+the+earth", "http://ask.metafilter.com/42777/More-sand-or-stars", "http://www.hawaii.edu/suremath/jsand.html", "http://answers.google.c...
5y7zz3
why do phone have a standard charging port but laptops don't?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5y7zz3/eli5_why_do_phone_have_a_standard_charging_port/
{ "a_id": [ "denu1m6", "deo0vaw" ], "score": [ 4, 2 ], "text": [ "It is worth noting that until fairly recently, phone's tended to have proprietary charging ports that were specific to the phone.\n\nThe reason is that there wasn't a compelling reason to. Until USB-C, there wasn't a univer...
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[]
[ [], [] ]
2amls3
there is a rooster somewhere in my neighborhood that starts crowing at 3am, way before the sun is up - why?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2amls3/eli5_there_is_a_rooster_somewhere_in_my/
{ "a_id": [ "ciwnrps", "ciwp790", "ciwqjfe", "ciwvhjj" ], "score": [ 9, 2, 3, 3 ], "text": [ "Roosters run on an internal clock, not the sun. Your neighbor probably has a rooster imported from a different timezone.", "Check your local municipal code. \n\nRoosters usuall...
[]
[]
[ [], [], [], [] ]
2rtugu
how can small countries be better at certain sports than enormous countries?
It seems to me like the two biggest factors contributing to a city, state or country's sporting success would be resources and talent pool. I've definitely noticed those factors have an impact on sport on a local level, and it certainly benefits countries like the USA and China in the Olympics and Paralympics. How is ...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2rtugu/eli5_how_can_small_countries_be_better_at_certain/
{ "a_id": [ "cnja9di" ], "score": [ 2 ], "text": [ "A few other factors to consider:\n\n**Culture**\n\nIf a sport has a deep cultural tradition, more people are going to play it and get good at it, and the country will develop an infracture to support it. The US is a large and rich country, but n...
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1lin5k
why aren't there different degrees of rape the way there are of assault, theft, and murder?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1lin5k/why_arent_there_different_degrees_of_rape_the_way/
{ "a_id": [ "cbzlswl" ], "score": [ 2 ], "text": [ "[There *are* different degrees of rape with different punishments](_URL_0_).\n\nRemoving because it's a moot question (the premise was incorrect, so there's nothing to explain)." ] }
[]
[]
[ [ "http://en.wikipedia.org/wiki/Rape_in_the_United_States#Criminal_Punishment" ] ]
m8k08
Is the DNA "code" deterministic ?
And if so what are the current problems in "reverse engineering" the code. This may well be a flawed question (My background is CS). By deterministic I mean, for example, will certain parts always translate into the same biochemical processes given the same "input". Clarification: I'm mostly interested in the genetic...
askscience
http://www.reddit.com/r/askscience/comments/m8k08/is_the_dna_code_deterministic/
{ "a_id": [ "c2yyvxh", "c2yz8uj", "c2yyvxh", "c2yz8uj" ], "score": [ 2, 2, 2, 2 ], "text": [ "Typically we refer to the genetic code as the set of nucleotide triplets, or codons, which map to the 20ish amino acids. If you are asking 'given the sequence of an mRNA can you pr...
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[ [], [], [], [] ]
4v2qpw
why do so many websites these days ask for my email address as soon as i get there, trying to sign me up for a newsletter?
This happens a million times more often than it did just a couple of years ago. Most recent one I just clicked on was [this](_URL_0_). No, I don't need a fucking newsletter about class action suits. Thanks. What's the story, are they just harvesting email addresses for ~~spam~~ marketing purposes?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4v2qpw/eli5_why_do_so_many_websites_these_days_ask_for/
{ "a_id": [ "d5uxqq2" ], "score": [ 5 ], "text": [ "When you visit a web site, they get to market to you anytime you want them to. When you subscribe to their newsletter, they get to market to you anytime **they** want to." ] }
[]
[ "https://topclassactions.com/lawsuit-settlements/lawsuit-news/340705-nvidia-settles-graphics-card-false-advertising-class-action/" ]
[ [] ]
4s148p
Were paratroopers ever used in the Pacific Campaign of WWII?
I understand that many of the islands were forested, but just wondering if they were ever deployed.
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/4s148p/were_paratroopers_ever_used_in_the_pacific/
{ "a_id": [ "d55q7ua", "d566d78" ], "score": [ 16, 3 ], "text": [ "They were in fact used! The Japanese carried out airborne landings in 1942 in support of their invasion of the Dutch East Indies, and American paratroopers made some landings in New Guinea in 1943. The commando units known ...
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[ [], [] ]
iw2re
What did Earth look like from Space at the dawn of life?
It must have looked very different. For one, the atmosphere had a completely different composition. Also, the geography must have been very different as well. What can we infer from the geologic record about the appearance of the Earth so many billions of years ago?
askscience
http://www.reddit.com/r/askscience/comments/iw2re/what_did_earth_look_like_from_space_at_the_dawn/
{ "a_id": [ "c2738u7", "c273lfv", "c274ic6" ], "score": [ 8, 6, 2 ], "text": [ "Single cell life came about ~3.8 billion years ago or so, but our grasp of geography during those time is a bit shaky. This is \"just before\" the formation of the first (theoretical) [super continent,...
[]
[]
[ [ "http://en.wikipedia.org/wiki/Vaalbara" ], [], [ "http://www.damninteresting.com/how-bacteria-nearly-destroyed-all-life/" ] ]
35dwyh
How deep into the Earth could humans drill with modern technology?
The deepest hole ever drilled is some 12km (40 000 ft) deep, but how much deeper could we drill? Edit: Numbers
askscience
http://www.reddit.com/r/askscience/comments/35dwyh/how_deep_into_the_earth_could_humans_drill_with/
{ "a_id": [ "cr3jv83", "cr3jvt1", "cr3lx5h", "cr3lxac", "cr3n2kp", "cr3otri", "cr3p8cu", "cr3r876", "cr3vrix", "cr435sn", "cr47o1w" ], "score": [ 2725, 146, 22, 10, 150, 10, 76, 10, 2, 6, 3 ], "text": [ "Driller here.\...
[]
[]
[ [ "http://www.bp.com/en/global/corporate/about-bp/bp-and-technology/more-recovery/deepwater-frontiers.html" ], [], [], [], [ "http://en.m.wikipedia.org/wiki/Kola_Superdeep_Borehole" ], [ "http://en.m.wikipedia.org/wiki/Kola_Superdeep_Borehole" ], [ "http://discovermagazine.com/2014...
2zvkgq
What species of animals went extinct during our lifetimes?
askscience
http://www.reddit.com/r/askscience/comments/2zvkgq/what_species_of_animals_went_extinct_during_our/
{ "a_id": [ "cpmwnp6", "cpn32km" ], "score": [ 7, 3 ], "text": [ "A bit long and depressing. I have no doubt I've missed lots. And of course, even if this was an 100% accurate to science list, it would be probably a 75% underestimate, as we have a shockingly poor knowledge of what animals ...
[]
[]
[ [ "http://en.wikipedia.org/wiki/Lists_of_extinct_animals" ], [ "http://www.biologicaldiversity.org/programs/biodiversity/elements_of_biodiversity/extinction_crisis/", "http://wwf.panda.org/about_our_earth/biodiversity/biodiversity/" ] ]
1al8i3
I have an alternative theory to the big bang that I want to know how to proceed with.
askscience
http://www.reddit.com/r/askscience/comments/1al8i3/i_have_an_alternative_theory_to_the_big_bang_that/
{ "a_id": [ "c8yfaq9" ], "score": [ 2 ], "text": [ "I'm not sure I follow your thought, but what would that imply exactly? Can you make any (falsifiable) predictions using your theory that can't be explained by the big bang?\n\nTo be an \"alternative theory\" to the Big Bang your theory needs to e...
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d36i1l
why does vaping create such a large, dense cloud of “smoke” (vapor)?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/d36i1l/eli5_why_does_vaping_create_such_a_large_dense/
{ "a_id": [ "ezzo10g" ], "score": [ 10 ], "text": [ "Interestingly. There are less particulates in vape vapour, than there are in cigarette smoke. But cigarette smoke has smaller particulates, so it appears a lot less visible. \n\nBecause the vapour is aerosolised (made into tiny droplets in the a...
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sq9z6
How powerful of an updraft would be needed to save a skydiver without a parachute?
This is [video](_URL_0_) made me think about this. Basically I want to know if this would be possible at terminal velocity. Im pretty sure you would need a turbine jet engine and a miracle to simple get deflected or shot back up into the air.
askscience
http://www.reddit.com/r/askscience/comments/sq9z6/how_powerful_of_an_updraft_would_be_needed_to/
{ "a_id": [ "c4g2ggr" ], "score": [ 3 ], "text": [ "Assuming that the person falling can maintain a belly-down position to produce maximum wind resistance, they'll fall at roughly 120mph. In order to reduce speed to a safer 20mph or so, an updraft of about 100mph would be required.\n\nProducing s...
[]
[ "http://www.youtube.com/watch?v=hjhoaMS_OyM" ]
[ [] ]
4dblvj
to the baseball experts, why do some say that it's better for the first baseman to be lefthanded?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4dblvj/eli5_to_the_baseball_experts_why_do_some_say_that/
{ "a_id": [ "d1pfmzf", "d1pftqv", "d1pfvby", "d1pgbib", "d1q2zqo" ], "score": [ 46, 4, 6, 10, 2 ], "text": [ "Lefties wear their gloves on their right hand. When you're standing on first base facing home plate, your right hand is on the second base side, and your le...
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[ [], [], [], [], [] ]
1swqh8
Is the chance of winning the lottery on a ticket with in-order numbers the same as random numbers?
Sorry if the title is confusing, I couldn't find a better way to phrase it. If 6 balls are pulled out of the lottery, is the chance of winning the same for increasing numbers in order and randomized numbers? For example: You pick your numbers in order to be: 1,2,3,4,5,6 or: 11,12,13,14,15,16 Or you pick random numbe...
askscience
http://www.reddit.com/r/askscience/comments/1swqh8/is_the_chance_of_winning_the_lottery_on_a_ticket/
{ "a_id": [ "ce20kjq", "ce20lhy" ], "score": [ 16, 51 ], "text": [ "Any set of numbers has the same chance of being drawn, but having randomly chosen numbers could be advantageous if you have a winning ticket. Depending on which lottery you are playing, the total prize money may well be sp...
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[ [], [] ]
292y7k
How exactly did European slave traders capture black people in Africa?
It would seem to me fairly hard to capture Africans in their native land, especially once word spread that Europeans were enslaving them. How did the natives react once the European intentions were made clear? Did slave traders have an army of sorts that just roamed the land capturing people from any settlement they ha...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/292y7k/how_exactly_did_european_slave_traders_capture/
{ "a_id": [ "cih0kpu" ], "score": [ 5 ], "text": [ "African tribes were often at odds with each other and the practice of slavery was practiced in Africa (like in many other places and times). Surviving members of defeated tribes were often taken as slaves of the victorious tribe. It was from thes...
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[ [] ]
9fntaw
why non-human mammals stop drinking mother's milk.
I realize that humans drink mother's milk as infants. I also realize that we make a transfer, at some point, to drinking cow's milk. I dont want to get into why we shouldn't be drinking cow's milk. My question is: why do other mammals stop feeding from the mother's teet at a certain point in their physical developm...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9fntaw/eli5_why_nonhuman_mammals_stop_drinking_mothers/
{ "a_id": [ "e5xvvy6", "e5xw2e6", "e5xwj6z", "e5xwqp3", "e5xxyhe", "e5xz5l5" ], "score": [ 7, 3, 4, 23, 5, 3 ], "text": [ "You guessed it. Almost all other mammals become lactose intolerant at a point. That means lactose intolerant people are the \"normal\" ...
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[ [], [], [], [], [], [] ]
61gy32
why does it cost so much to protect the potus on a daily basis? other than salaries, where does the money go?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/61gy32/eli5_why_does_it_cost_so_much_to_protect_the/
{ "a_id": [ "dfefuvc", "dfefvrq", "dfenr1p", "dfex7pl" ], "score": [ 2, 2, 2, 3 ], "text": [ "There isn't just 5 guys as secret service. The secret service employs over 6000 people, all who are at the top of their fields. You're not going to have any entry level secret...
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[]
[ [], [], [ "http://www.oregonlive.com/politics/index.ssf/2015/05/13_ways_secret_service_agents.html" ], [] ]
23z38b
Who was positioned on the frontlines of the battlefield in the medieval ages (best/skilled soldiers)? What were the survival rates for said soldiers?
I was discussing with a friend how courageous or scared soldiers would be at the front lines of the battlefield and a question arose where we wanted to know whom was chosen to be positioned on the front lines and what the survival rates were.
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/23z38b/who_was_positioned_on_the_frontlines_of_the/
{ "a_id": [ "ch28lk1" ], "score": [ 2 ], "text": [ "It really depends on what era you're talking about, as well as what culture. Different leaders from different cultures placed drastically different importance on different sections of troops during battles. Was there a specific time period and ar...
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[ [] ]
2q9c9g
Hello historians! Very unique flintlock rifle needs a story to go with its awesomeness. Can you help?
I recently acquired this flintlock rifle at auction without knowing much about guns. My wife thinks I'm crazy but I think these are awesome pieces of history. I'm most interested in the serpent design on the flintlock. I have not seen anything like that anywhere else in my online research. The stock also seems a unique...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2q9c9g/hello_historians_very_unique_flintlock_rifle/
{ "a_id": [ "cn48us6" ], "score": [ 3 ], "text": [ "You might have better luck in /r/guns or /r/whatisthisthing, but not many people will be able to help you unless you get photos of the maker's marks and armoury marks (if any) on the weapon itself." ] }
[]
[ "http://i.imgur.com/oZ3gl0L.png", "http://i.imgur.com/i2zbeC4.png" ]
[ [] ]
2ha2s6
why do dogs randomly bark at people when they pass by?
Is it to get the attention of the owner that someone is outside? The people outside aren't threatening them, so why bark at people to scare them?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2ha2s6/eli5_why_do_dogs_randomly_bark_at_people_when/
{ "a_id": [ "ckqsgwi", "ckqsng3" ], "score": [ 2, 2 ], "text": [ "They are threatening them. By passing near or through an area that the dog considers its territory that is a threat. ", "Dogs bark for lots of reasons, so there's no one answer. Sometimes it's a threat. Sometimes it's ...
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[ [], [] ]
83559s
Is there such a thing as a "fourth generation quarks or leptons?"
Are they possible to make and just have extremely short lifespans or is the third generation of top quarks, bottom quarks, taus and tau neutrinos has heavy as quarks and leptons can possibly get?
askscience
https://www.reddit.com/r/askscience/comments/83559s/is_there_such_a_thing_as_a_fourth_generation/
{ "a_id": [ "dvfdxsx", "dvfe90o", "dvfec17", "dvfjvlr" ], "score": [ 2, 3, 9, 2 ], "text": [ "We have no experimental evidence for them, but there are some searches for them (a search from [CMS at CERN](_URL_0_)).\n\nIt is not something that I here about a lot and I have ye...
[]
[]
[ [ "https://arxiv.org/abs/1209.0471" ], [], [ "https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CombinedSummaryPlots/EXOTICS/ATLAS_VLQ_TT_step4/ATLAS_VLQ_TT_step4.png", "https://arxiv.org/abs/1204.1252" ], [] ]
1y9n1a
why does disney seem to have a movie formula that involves the death or absents of one or both parents and why has this formula stuck through all but a few films?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1y9n1a/eli5_why_does_disney_seem_to_have_a_movie_formula/
{ "a_id": [ "cfij8rk", "cfijbm8", "cfijcun" ], "score": [ 2, 5, 2 ], "text": [ "This is a trope that spans much more than just Disney films", "This is a common trope in literature and film. It is an effective way to make an independent character who cannot simply rely on his fa...
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[]
[ [], [], [] ]
347s1r
how do we know a country has gotten rid of weapons (nuclear or chemical) as russia has just claimed?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/347s1r/eli5_how_do_we_know_a_country_has_gotten_rid_of/
{ "a_id": [ "cqs1tjn", "cqs3hhj", "cqs3xc1" ], "score": [ 2, 2, 2 ], "text": [ "The UN and some NGOs send groups of people to verify the absence of nuclear weapons in armories, to witness that nuclear centrals are only for energetic purpose.", "The SALT treaties included provis...
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[ [], [], [] ]
5oocsf
can a singularity move through space?
If so, does it, and what is required to move it?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5oocsf/eli5_can_a_singularity_move_through_space/
{ "a_id": [ "dckufmf" ], "score": [ 3 ], "text": [ "Everything in space is in motion relative to _something_. So it is moving, constantly, in some fashion. Unless you ment something else?" ] }
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[ [] ]
1rt40t
During the Middle Ages and the Renaissance, how was the surname of illegitimate children determined?
Also, what would life be like for a king's or noblemen's bastard, whether they were born of the peasantry or another member of the peerage?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1rt40t/during_the_middle_ages_and_the_renaissance_how/
{ "a_id": [ "cdqqmzy", "cdqso8q", "cdqw5jr" ], "score": [ 4, 18, 2 ], "text": [ "The term \"peerage\" relates principally to the English (edit: and Scottish) nobility; is your interest focused on that realm, or more broadly?", "Answers to your questions could vary greatly based...
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[]
[ [], [], [] ]
2bsdt0
What would the effects on global warming be if all artificial CO2 emissions ended tomorrow?
askscience
http://www.reddit.com/r/askscience/comments/2bsdt0/what_would_the_effects_on_global_warming_be_if/
{ "a_id": [ "cj8k7md" ], "score": [ 7 ], "text": [ "Hello, paleoclimatologist here! From a longer-term geological perspective, we are currently living in an [interglacial](_URL_5_) period (or warm period in between glacial worlds) for the [last 10,000 years](_URL_3_). Studies suggest that if we ha...
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[]
[ [ "http://adsabs.harvard.edu/abs/2013AGUFMPP22A..04Z", "http://www.nature.com/ngeo/journal/v5/n2/full/ngeo1358.html", "http://onlinelibrary.wiley.com/doi/10.1111/j.1539-6924.2012.01880.x/full", "http://en.wikipedia.org/wiki/Holocene", "http://doi.wiley.com/10.1029/2004GC000891", "http://en.w...
1qog8j
What military innovations allowed Napoleon to easily defeat military-obsessed Prussia?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1qog8j/what_military_innovations_allowed_napoleon_to/
{ "a_id": [ "cdeu0tq", "cdew0wn", "cdewifg" ], "score": [ 7, 88, 14 ], "text": [ "Somebody will give a better answer, but I would suggest reading Clausewitz's [On War](_URL_0_). It was written as a response to Napoleon and what the Prussian military would need to do to win future ...
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[]
[ [ "http://en.wikipedia.org/wiki/On_War" ], [], [] ]
2knxi8
if the u.s. government is supposed to separate church and state, why are politicians allowed to publicly state their religious views and act on those views while making policies or voting in congress?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2knxi8/eli5_if_the_us_government_is_supposed_to_separate/
{ "a_id": [ "cln2k6m", "cln2y14", "cln357h", "cln3why", "cln48ge", "cln4ol1", "cln4rku", "cln4wg4", "cln4wq8", "cln5ads", "cln5k1m", "cln5mye", "cln5ndn", "cln5pm8", "cln5tug", "cln5vsw", "cln5x48", "cln661h", "cln66k4", "cln67tx", "c...
[]
[]
[ [], [], [], [], [], [], [], [], [], [], [ "http://www.archives.gov/exhibits/charters/constitution_transcript.html", "http://en.wikipedia.org/wiki/No_Religious_Test_Clause" ], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [...
5aghb6
why do statistically heavy set people have deeper voices than more average sized people?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5aghb6/eli5_why_do_statistically_heavy_set_people_have/
{ "a_id": [ "d9gbi4z" ], "score": [ 5 ], "text": [ "Larger people tend to have have longer vocal cords. Longer vocal cords vibrate at a lower frequency. The lower the frequency you vibrate your vocal cords at, the deeper your voice is." ] }
[]
[]
[ [] ]
5y3zjk
why cant anything have an entropy of 0 j/k?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5y3zjk/eli5why_cant_anything_have_an_entropy_of_0_jk/
{ "a_id": [ "demzj2v" ], "score": [ 2 ], "text": [ "Technically it is possible, it's just that if a molecule has no energy, it will be a negligible amount of time before it has energy again, even if it is only like 0.001 k" ] }
[]
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[ [] ]
codsc3
why can't someone produce cheap medicine like insulin?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/codsc3/eli5_why_cant_someone_produce_cheap_medicine_like/
{ "a_id": [ "ewhom3s", "ewhoso2", "ewhpeun", "ewhqb9h" ], "score": [ 3, 4, 8, 3 ], "text": [ "The insulins that were originally patented were incredibly simple compared to today's insulin analogs, and are in fact still available for relatively low prices, without a prescrip...
[]
[]
[ [], [ "https://www.npr.org/sections/health-shots/2015/03/19/393856788/why-is-u-s-insulin-so-expensive" ], [], [] ]
ub720
How far back in time would we have to go for the earth to be uninhabitable for humans?
I know the earth was uninhabitable for certain periods of time in the not so distance past (85 million years ago for example), but if we were to drop a human off in a time period, how far back could we go before he couldn't survive?
askscience
http://www.reddit.com/r/askscience/comments/ub720/how_far_back_in_time_would_we_have_to_go_for_the/
{ "a_id": [ "c4txv8c" ], "score": [ 4 ], "text": [ "Just about a billion years, as the oxygen levels have changed quite rapidly in the past few years. Humans need a minimum oxygen content, other factors can also come into play. The oxygen example was immediate. There was a period of time where hum...
[]
[]
[ [] ]
3n9flr
how will new gun laws prevent mass shootings?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3n9flr/eli5_how_will_new_gun_laws_prevent_mass_shootings/
{ "a_id": [ "cvm0ul3", "cvm11bz", "cvm14jj", "cvm16xa", "cvm2pdo", "cvm2r4p", "cvm3r7v", "cvm3uwk", "cvm3w4k", "cvm5mrb", "cvm742h", "cvmalj8", "cvmdi64" ], "score": [ 36, 8, 4, 25, 4, 6, 15, 4, 6, 4, 6, 3, 2 ...
[]
[]
[ [ "http://articles.chicagotribune.com/2013-02-17/news/ct-met-guns-gangs-20130217_1_levaine-tanksley-gun-laws-gun-trafficker" ], [], [], [], [], [], [], [], [ "http://www.theguardian.com/us-news/2015/jun/09/the-counted-police-killings-us-vs-other-countries" ], [], [], [], [] ]
afl2xc
How do space agencies prevent germs and bacteria on their rovers (Mars Rover) from contaminating the planet they visit?
Or do they even try and prevent it? Am I correct in thinking that the scientists have something in place to stop living organisms/bacteria contaminating Mars when objects come in contact with the planet? If so how is it done?
askscience
https://www.reddit.com/r/askscience/comments/afl2xc/how_do_space_agencies_prevent_germs_and_bacteria/
{ "a_id": [ "edzwjfe", "ee0eyms", "ee0gma5" ], "score": [ 14, 7, 4 ], "text": [ "They clean and sterilize the object before it's launched. This eliminates any food for bacteria or microbes. \n\nAlso, space is incredibly hostile to life. Several months of cosmic rays, unfiltered UV ...
[]
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[ [], [], [] ]
bjpl5u
Were only blacks discriminated against during segregation?
[deleted]
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/bjpl5u/were_only_blacks_discriminated_against_during/
{ "a_id": [ "emawlfn" ], "score": [ 2 ], "text": [ "No, but it depends on where you live. /u/Dubstripsquads gave a [masterful answer](_URL_1_) with an extensive bibliography.\n\nI would also look at the answers [here](_URL_0_) by /u/Kugelfang42 and [here](_URL_2_) by /u/grumblingduke." ] }
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[]
[ [ "https://www.reddit.com/r/AskHistorians/comments/5n57kp/its_1935_im_mexican_and_i_walk_into_a_segregated/", "https://www.reddit.com/r/AskHistorians/comments/3ix499/how_were_nonblack_minorities_treated_in_the_jim/", "https://www.reddit.com/r/AskHistorians/comments/a8iej8/question_on_us_segregation_laws...
470vpw
How can we know how names like Caesar or Cicero were really pronounced like?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/470vpw/how_can_we_know_how_names_like_caesar_or_cicero/
{ "a_id": [ "d09oy43" ], "score": [ 20 ], "text": [ "Hi! Questions on pronunciation of Latin and other ancient languages come up here fairly often; I'll just link this classic comment, which breaks down Caesar letter by letter, with references:\n\n* /u/thatfool in [Original pronunciation of \"Ceas...
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[]
[ [ "https://www.reddit.com/r/AskHistorians/comments/146zb6/original_pronunciation_of_ceasar/c7agmyo" ] ]
m44bb
Would helmets or other protective gear be able to reduce airplane casualties?
Obviously not expecting to reduce them to zero, but every little helps. Since there are plane crashes that have survivors, that means that more people may have survived if they were better protected
askscience
http://www.reddit.com/r/askscience/comments/m44bb/would_helmets_or_other_protective_gear_be_able_to/
{ "a_id": [ "c2xy3qb", "c2xy3qb" ], "score": [ 2, 2 ], "text": [ "Probably not much, in a mid-air collision or breakup there would be no survivors at all, but if it crashed during landing or takeoff a helmet could protect you enough to make the difference between survival and not. If you'r...
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[]
[ [], [] ]
217kgs
why are there no high profile painters/sculptors (michelangelo, da vinci) or artistic "movements" anymore?
Painting and sculpting seem to be a ancient art. I know people still do it, but how many paintings and sculptures come out nowadays that are heralded like the works of Da Vinci or Michelangelo. Also I'm sure there are still "movements" going on but nothing I can see being studied and documented the way movements like ...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/217kgs/eli5_why_are_there_no_high_profile/
{ "a_id": [ "cgadubo", "cgae3wx", "cgaebh1", "cgaeh6t", "cgafs47" ], "score": [ 5, 2, 2, 7, 2 ], "text": [ "Most of those 'high profile' artists were considered talented professionals in their day. After their death, their works became increasingly regarded.\n\nTher...
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[ [], [], [], [], [] ]
9egeuj
Does prosopagnosia/face blindness also affect how people see ‘faces’ on animals or is it restricted to humans?
askscience
https://www.reddit.com/r/askscience/comments/9egeuj/does_prosopagnosiaface_blindness_also_affect_how/
{ "a_id": [ "e5pnmqe" ], "score": [ 3 ], "text": [ "I'll try my best at answering this:\n\nFirstly, we know that certain areas of the brain such as the fusiform face area (FFA) are generally linked to face-specific recognition. The FFA doesn't really tend to light up in fMRI to anything other than...
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[]
[ [ "http://www.pnas.org/content/111/14/5123", "https://www.ncbi.nlm.nih.gov/pubmed/8446761", "https://www.sciencedirect.com/science/article/pii/S0010945269800274" ] ]
gnk53
When physicians talk about 'information', what do they mean?
I have heard it said that "information cannot be lost in a black hole" and a hypothesis that in the beginning there was only information. What is meant by information in this context?
askscience
http://www.reddit.com/r/askscience/comments/gnk53/when_physicians_talk_about_information_what_do/
{ "a_id": [ "c1ovk62", "c1ovqk9" ], "score": [ 6, 5 ], "text": [ "I think an easy way to think of it is to realize that a black hole is not an electron. Nor a proton. Nor an atom. It's not matter in any conventional sense of the word. It has the energy of mass, often the energy of rotation...
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[]
[ [], [] ]
6l0qlk
why is getting comfortable (slouching, laying in awkward positions, sinking in your chair, etc.) so bad for you but so comfortable at the same time?
Usually having perfect posture for most people is hard because it's uncomfortable. Shouldn't it be the other way around?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6l0qlk/eli5why_is_getting_comfortable_slouching_laying/
{ "a_id": [ "djq6t57" ], "score": [ 2 ], "text": [ "Because sitting in the same position (upright) makes you sore after a while. I work in an office and do this a lot and it helps your back a lot." ] }
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[]
[ [] ]
lxgqz
Is it possible that there is a human somewhere with whom I don't share a single ancestor, going all the way back to the first single-celled organisms?
I'm assuming that one single-celled organism isn't the ancestor for everyone on earth. Surely a few developed around the same time across the planet, then continued into evolving into things until bam, here I am. Could the process have occurred long enough to produce someone I'm not even slightly related to?
askscience
http://www.reddit.com/r/askscience/comments/lxgqz/is_it_possible_that_there_is_a_human_somewhere/
{ "a_id": [ "c2wdhrc", "c2wdivg", "c2wdqnj", "c2wdhrc", "c2wdivg", "c2wdqnj" ], "score": [ 10, 2, 5, 10, 2, 5 ], "text": [ "No. Every human, in fact every living thing on Earth, is literally your cousin. One single-celled organism is the ancestor for everyon...
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[ [ "http://en.wikipedia.org/wiki/Most_recent_common_ancestor#MRCA_of_all_living_humans" ], [], [], [ "http://en.wikipedia.org/wiki/Most_recent_common_ancestor#MRCA_of_all_living_humans" ], [], [] ]
206vza
how does this not work? (picture in description)
Sorry for the terrible vagueness of the question I've drawn this to help explain: _URL_0_ brown is the floor, red is a normal rope Why is is that if I were to sit on a rope and pull up on either end, I will remain on the ground, but if I sit on the same rope and someone comes along and pulls up on either end, I wi...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/206vza/eli5_how_does_this_not_work_picture_in_description/
{ "a_id": [ "cg0bzbq" ], "score": [ 2 ], "text": [ "because the force you are exerting upward derives from within yourself. If you are up in the air, you have nothing to push down against to support yourself. Someone else, who remains standing on the ground, has something to push up against to def...
[]
[ "http://i.imgur.com/LEFSNsc.jpg" ]
[ [] ]
3jovi8
Is it possible for a body of water (lake, pond, etc) to be naturally carbonated?
askscience
https://www.reddit.com/r/askscience/comments/3jovi8/is_it_possible_for_a_body_of_water_lake_pond_etc/
{ "a_id": [ "cur5c7r", "cur5p7b", "curevdq", "curhevi", "curi27p", "curi7xs", "curmaqm" ], "score": [ 4, 227, 31, 4, 7, 57, 2 ], "text": [ "in what capacity?\n\ncarbonation is dissolved CO2.\n\nTo that end, any water with life in it will have dissolv...
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[]
[ [], [], [ "https://en.wikipedia.org/wiki/Pamukkale" ], [], [], [ "https://en.wikipedia.org/wiki/Lake_nyos" ], [ "https://books.google.ca/books?id=fc2oTUfidvgC&pg=PA45&dq=secrets+source+fox&hl=en&ei=0Z0_TL7lMpCEvAPw7vDiCA&sa=X&oi=book_result&ct=result#v=onepage...
18ovyn
How common was ritualistic suicide in Japanese society?
I'm quite the amateur historian and have read many accounts of seppuku in the 47 Ronin, a biography of Miyamoto Musashi, and some less than accurate movies. Was it typically reserved for high ranking males who brought "dishonor" upon themselves or are we just following stereotypes? Are there any figures as to how many ...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/18ovyn/how_common_was_ritualistic_suicide_in_japanese/
{ "a_id": [ "c8gshhc" ], "score": [ 34 ], "text": [ "As usual in Japanese or any other country's history, this is dependent of the era.\n\nFirst, let us note that ritualised suicide wasn't something that ordinary Japanese farmers usually did. It was a custom of the nobility and the warriors. At no...
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[]
[ [ "http://books.google.se/books?id=riI6iDtJGboC&lpg=PA25&dq=seppuku&hl=sv&pg=PA22#v=onepage&q&f=false" ] ]
1720yr
asteroids mining will begin eventually, what will be the consequence if earth quickly gains weight?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1720yr/eli5_asteroids_mining_will_begin_eventually_what/
{ "a_id": [ "c81gda3", "c81gexg", "c81gfhl", "c81gr3p", "c81hv6i", "c81ldxb", "c81tqjx", "c81yed4" ], "score": [ 112, 4, 12, 6, 2, 2, 2, 2 ], "text": [ "You have to realize how *large* earth actually is. The statistic that gets this across th...
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[ [], [], [], [], [], [], [], [] ]
72uuc6
what do 'good acoustics' in a music venue/theatre actually mean or sound like?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/72uuc6/eli5_what_do_good_acoustics_in_a_music/
{ "a_id": [ "dnlfcrw", "dnlh1ce" ], "score": [ 2, 2 ], "text": [ "This typically means that a performer on stage can be heard clearly from any seat in the house. \n\nThis is accomplished by carefully planning the construction of the venue by choosing the proper materials and the proper siz...
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[]
[ [], [ "http://hyperphysics.phy-astr.gsu.edu/hbase/Acoustic/imgaco/rt2.gif" ] ]
2k9vvo
why do you multiply 1/3 to height x area to get the volume of a pyramid?
It's been bugging me since back when I learned it and it's killing me now that I think back on it.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2k9vvo/eli5_why_do_you_multiply_13_to_height_x_area_to/
{ "a_id": [ "clj9t9l" ], "score": [ 4 ], "text": [ "the pyramid has the same volume with the point in the center as it would if you pushed the point into one of the corners (so that the pyramid has two vertical sides) and three of those fit together to form a rectangular cuboid whose volume is bas...
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[ [ "http://korthalsaltes.com/model.php?name_en=three+pyramids+that+form+a+cube" ] ]
1q2edl
why we don't paint on our airplanes like we did during wwii
I recently saw some WWII planes and I saw the unique, pin up, and fighter style designs. What changed from when that was okay do to, and now it doesn't? EDIT: I realized I used "us" to refer to the Americans, I forgot that Reddit is a global website, my apologizes.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1q2edl/eli5_why_we_dont_paint_on_our_airplanes_like_we/
{ "a_id": [ "cd8hhqy", "cd8i17e", "cd8iv49", "cd8kres" ], "score": [ 4, 13, 5, 7 ], "text": [ "It's not considered politically prudent to appear to be wanting to go to war or enjoying it.", "For one thing, some modern combat aircraft are designed for reduced radar cross...
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[]
[ [], [], [ "http://i.imgur.com/h6JmVOO.jpg" ], [] ]
24ejur
Is "Dark Ages" also a misnomer for the Greek Dark Ages?
Knowing that no serious historian uses "dark ages" to describe Medieval Europe, I always have trouble when I see the Greek Dark Ages. Is it commonly accepted that this is an accurate phrase for describing the period?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/24ejur/is_dark_ages_also_a_misnomer_for_the_greek_dark/
{ "a_id": [ "ch6cjdx" ], "score": [ 7 ], "text": [ "It is contested to some extent as well, but it's generally a good deal more accepted because it's not nearly as much of a misnomer. For one thing, the geographical tag makes it much, much less misleading than in the case of the aftermath of the w...
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[ [] ]
8angrj
up until about ten years ago, people in photos taken with flash almost always came out with red eyes, but now you never see people with red eyes in pictures - what happened?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/8angrj/eli5_up_until_about_ten_years_ago_people_in/
{ "a_id": [ "dx011d9", "dx01fvt", "dx01org", "dx01p41" ], "score": [ 2, 2, 14, 5 ], "text": [ "The red-eye effect is caused by the camera flash reflecting off the back of the subject's eyes. Newer cameras and phones have special lights and sensors that prevent this.", "...
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[ [], [], [], [] ]
24azfc
how do we get a specific sickness more than once? wouldn't we build up an immunity after the first time we got it?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/24azfc/eli5_how_do_we_get_a_specific_sickness_more_than/
{ "a_id": [ "ch5bjtt", "ch5bkgr" ], "score": [ 2, 2 ], "text": [ "We generally *do* build up an immunity. But many things that we tend to think of as \"a specific sickness\" aren't actually specific. For instance, there are hundreds of different cold viruses, and they keep mutating every...
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[ [], [] ]
itql2
Can someone explain this article for me? Mainly if it's complete crock or not?
Scientific America just released ["Nuclear Fission Confirmed as Source of More than Half of Earth's Heat"](_URL_0_) and while it looks solid, I'm no where near qualified to determine if it's all just a bunch of methodological mistakes or ill-determined conclusions.
askscience
http://www.reddit.com/r/askscience/comments/itql2/can_someone_explain_this_article_for_me_mainly_if/
{ "a_id": [ "c26k8r9", "c26kb05", "c26l1nm", "c26l1q8" ], "score": [ 3, 3, 2, 2 ], "text": [ "This isn't my field, but the Nature family of journals are quite reputable. Suggesting it's \"all just a bunch of methodological mistakes or ill-determined conclusions\" is a bit ...
[]
[ "http://www.scientificamerican.com/blog/post.cfm?id=nuclear-fission-confirmed-as-source-2011-07-18" ]
[ [], [], [], [] ]
324cdr
how come any time you see depictions of early humans/cavemen, they're never shown as having long beards, even though they didn't have any razors at the time?
I know they had rudimentary stone tools, but i wouldn't think anything capable of giving a close shave...or that that would even be something they thought of doing.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/324cdr/eli5_how_come_any_time_you_see_depictions_of/
{ "a_id": [ "cq7q0of", "cq7q3m3", "cq7qbij", "cq7thli", "cq7uvka", "cq7uyr5", "cq817k6", "cq81yhu", "cq82ukd", "cq88iiy", "cq8940w", "cq89e9r" ], "score": [ 2, 14, 6, 91, 6, 19, 2, 4, 16, 4, 2, 2 ], "text": [ "...
[]
[]
[ [], [ "http://en.wikipedia.org/wiki/Obsidian" ], [], [], [], [ "http://nativeamericans.mrdonn.org/northwest/longhouses.html", "http://acanadiannaturalist.net/2012/11/06/woman-the-hunter/", "https://youtu.be/QWSTE6WLB0Y", "http://en.wikipedia.org/wiki/Caveman", "http://coursesa.ma...
349ci7
if at the start of our life we have just a few cells with exactly the same dna, and those cells divide to make exactly the same cells with exactly the same dna inside them, how do we end up with complex bodies comprising vastly different kinds of cells? (nerve cells, muscle cells etc.)?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/349ci7/eli5_if_at_the_start_of_our_life_we_have_just_a/
{ "a_id": [ "cqsgtr1", "cqsi4zm", "cqsi6mo" ], "score": [ 2, 2, 3 ], "text": [ "To simplify a complicated process that I don't fully understand:\n\nAs we develop, our bodies create hormones and proteins, which tell cells in certain parts of our body to take on certain roles. As emb...
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[ [], [], [] ]
20e21i
why is the origin of the basque language, [out of southern france/ northern spain], so hard to identify?
There have been various suggestions however no definitive root of this language and the sound of this language [To me a Japanesey-Spanish] sounds intriguing...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/20e21i/eli5_why_is_the_origin_of_the_basque_language_out/
{ "a_id": [ "cg2dlqp" ], "score": [ 2 ], "text": [ "I'm not sure what you're actually asking.\n\nBasque appears to be a unique language completely unrelated to any other still-existing European language. Linguists therefore suspect it's derived from one of the older, now lost, proto-Indo-European ...
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[ [] ]
38byme
why do directors wear berets?
I've seen this on multiple directors in multiple countries. Why is this happening?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/38byme/eli5_why_do_directors_wear_berets/
{ "a_id": [ "crtw7kn", "crtwuvb" ], "score": [ 2, 2 ], "text": [ "Partly it is down to it almost being part of the uniform, part of it is practicality. You need something that will keep the rain and sun off, won't blow away in the wind and won't make any noise on set a beret or cap general...
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[]
[ [], [] ]
3sfmby
Was the battle axe really a predominantly "viking" or "Norse" or "Scandinavian" weapon as pop culture portrays it, or was it more widespread?
As a Jewish axe man (guitar of course) myself, I'd like to think I don't have to have flowing blonde locks to call myself one. But seriously, I'm interested in the history of the axe as a weapon.
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/3sfmby/was_the_battle_axe_really_a_predominantly_viking/
{ "a_id": [ "cwww7ob", "cwwx2oe" ], "score": [ 2, 15 ], "text": [ "_URL_1_\n\nHungarian source, but I can translate if someone wishes to know the contents.\n\nBasically what it says that first Hungarians to arrive in the Carpathian basin had used an axe called \"fokos\", which is basically...
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[ [ "http://turania.hu/catalog/images/fokos_11_n.JPG", "http://mek.oszk.hu/00000/00057/html/08.htm#9" ], [ "http://media.liveauctiongroup.net/i/13557/13838551_1.jpg?v=8CF59AD9CFD75C0", "https://upload.wikimedia.org/wikipedia/commons/0/04/CMOC_Treasures_of_Ancient_China_exhibit_-_bronze_battle_axe....
5w71gm
would someone with high blood pressure benefit from controlled blood loss? would blood pressure decrease enough to be worth it?
I donate blood often, and I don't see any noticeable effects from losing a pint of blood every eight weeks or so. How much does blood pressure go down after a donation, and is it worth donating just for that reason?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5w71gm/eli5_would_someone_with_high_blood_pressure/
{ "a_id": [ "de7z1cr" ], "score": [ 5 ], "text": [ "Blood pressure is not about the static pressure of a certain amount in a container. It's about the effort needed to drive it round your blood vessels like through the pipes of a central heating system where near-blockages are bad." ] }
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[ [] ]