q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
value | subreddit stringclasses 3
values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
1lfugf | How exactly does interval training increase endurance? Are there any academic studies (no "bro-science" please) that support this claim? | To clarify: what exactly at the cellular level (in the heart, lungs, and muscles) is different between interval training for 50 minutes compared to running for 50 minutes straight at a medium-high intensity? | askscience | http://www.reddit.com/r/askscience/comments/1lfugf/how_exactly_does_interval_training_increase/ | {
"a_id": [
"cbyz09i"
],
"score": [
7
],
"text": [
"It looks like this is still somewhat mystery.\n\n1. Sports Med. 2002;32(1):53-73.\n*The scientific basis for high-intensity interval training: optimising training programmes and maximising performance in highly trained endurance athletes.*\nLaurs... | [] | [] | [
[
"https://www.ncbi.nlm.nih.gov/pubmed/11772161",
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2375551/"
]
] | |
30kykz | There is a rather prevalent laymen's belief that games and puzzles like Su Doku, Chess, Crosswords, etc. improve cognitive function. Is this true? If so, how do the skills obtained from doing these manifest in everyday life? | askscience | http://www.reddit.com/r/askscience/comments/30kykz/there_is_a_rather_prevalent_laymens_belief_that/ | {
"a_id": [
"cptiges",
"cptpypa"
],
"score": [
35,
4
],
"text": [
"No. There is very strong evidence that you can improve performance on specific tasks with practice (even very basic sensory tasks, such as detecting a sound, or seeing a low-contrast tumour on an x-ray), and there is some w... | [] | [] | [
[
"http://www.mrc-centre.cam.ac.uk/reg_com/brain_training.html"
],
[]
] | ||
2itmsd | why do most ceilings have a texture instead of being flat like walls? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2itmsd/eli5_why_do_most_ceilings_have_a_texture_instead/ | {
"a_id": [
"cl5dbmh",
"cl5e3if"
],
"score": [
2,
9
],
"text": [
"Depending on what you are talking about, it may be called a \"popcorn Ceiling\" or \"Artex\".\n\nAnd it can be for a variety of reasons. Sound reduction, easier to clean, or just for aestetic purposes.",
"It reduces echo... | [] | [] | [
[],
[]
] | ||
2g2nwb | how come the "biggest loser" contestants can exercise 8 hours a day and be fine but the rest of us need to increase our running distance 10% a week? | Is overtraining really a thing? Could I just start doing 3 hours at the gym a day and be fine as long as I vary my activity (cardio and weights)? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2g2nwb/eli5_how_come_the_biggest_loser_contestants_can/ | {
"a_id": [
"ckf25q6",
"ckf3mlf"
],
"score": [
17,
2
],
"text": [
"Those people are engaging in unhealthy and unsustainable weight lost by massive calorific restriction and expenditure.\n\nCorrect, sustainable weight loss is crafted with a long term slight calorific deficit of approx 500ca... | [] | [] | [
[],
[]
] | |
2dxr8q | how is/was music rated in order to 'make it to the charts?' | In other words, how does Billboard Top 100 (or other music charts) determine how music is rated? I figure albums are based on sales but what about individual songs? How has it changed over the last fifty years? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2dxr8q/eli5_how_iswas_music_rated_in_order_to_make_it_to/ | {
"a_id": [
"cju4irh",
"cjudyxi"
],
"score": [
2,
2
],
"text": [
"Billboard uses an algorithm for singles that factors in sales, radio airtime, streaming service plays, and most recently, YouTube views. If I remember correctly, they had to give less weight to YouTube views because trends l... | [] | [] | [
[
"http://www.billboard.com/articles/columns/chart-beat/5740625/ask-billboard-how-does-the-hot-100-work"
],
[]
] | |
1m20f0 | Did Martin Luther orally ingest his own feces? | I have read at various questionable places on the internet that Martin Luther ingested his own feces. One place is at [slate](_URL_0_) , where it is written
"Martin Luther was convinced: he reportedly ate a spoonful of his own excrement daily". I have been unable to find any sources on this, and Martin Luther's wikiped... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1m20f0/did_martin_luther_orally_ingest_his_own_feces/ | {
"a_id": [
"cc50p1n"
],
"score": [
16
],
"text": [
"Can't say I've seen this one before.\n\nNow, I've spent the last half an hour searching through available online resources, both academic and plain old sites, and I have noticed a certain pattern. Whenever someone mentions this fact, it's always... | [] | [
"http://www.slate.com/articles/health_and_science/green_room/features/2008/the_big_necessity/why_i_wrote_a_book_about_human_waste.html"
] | [
[
"http://hansa-hewlett.com/Supplement.pdf",
"http://books.google.co.il/books?id=ebTmrbjhHOMC&dq=The+Big+Necessity:+The+Unmentionable+World+of+Human+Waste+and+Why+It+Matters&hl=en&sa=X&ei=RjAuUoiOFYmqhQf-wIDoBA&redir_esc=y",
"http://www.amazon.com/Off-Record-Martin-Luther/dp/09457320... | |
2tzlt3 | Why are diseases such as HIV transferable through blood transfusions, but a blood disease such as leukemia isn't? | askscience | http://www.reddit.com/r/askscience/comments/2tzlt3/why_are_diseases_such_as_hiv_transferable_through/ | {
"a_id": [
"co4ds2p"
],
"score": [
5
],
"text": [
"HIV is an infectious disease, a virus that can only reproduce in human cells. If you move HIV particles in blood to a new person's blood, it will keep infecting cells; it's the way it makes more virus.\n\nLeukemia is a cancer that begins in the b... | [] | [] | [
[]
] | ||
5qdeup | how does a tax on imports work? how does this tax shake down to consumers? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5qdeup/eli5_how_does_a_tax_on_imports_work_how_does_this/ | {
"a_id": [
"dcychbz",
"dcygc8i",
"dcygdnw"
],
"score": [
4,
5,
3
],
"text": [
"When you go to the store, the sales tax is *technically* charged against \"the sale,\" not specifically to \"the buyer\". However, the retailer completely and transparently passes this cost onto you.\n... | [] | [] | [
[],
[],
[]
] | ||
1ulbaa | how were photos transferred from film to paper for developing? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ulbaa/eli5_how_were_photos_transferred_from_film_to/ | {
"a_id": [
"cej8b5s"
],
"score": [
2
],
"text": [
"First you develop the film, which gives you the negative. Then you shine a light through the negative onto the photo paper. The photo paper is basically the same as film, only instead of being clear it has a white backing. You develop the photo p... | [] | [] | [
[]
] | ||
2mw6og | At what point did humanity start selling music? | I know that we have been making music for a very long time, even prehistorically, but at what point did we stop just playing music and start selling / trading it? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2mw6og/at_what_point_did_humanity_start_selling_music/ | {
"a_id": [
"cm8g8zt"
],
"score": [
2
],
"text": [
"The question is a bit vague. /u/kvothe_the_jew's answer mentions selling performances and selling recordings, but there's also the possibility of selling sheet music and lyrics. Can you clarify what you're asking about?\n\nAutolycus, the trickste... | [] | [] | [
[]
] | |
8z8brq | how come we can get used to hot or cold temperatures after minutes, but our blood temp stays the same? like jumping in a cold pool. what is the mechanism that adapts us to the cold so fast? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8z8brq/eli5_how_come_we_can_get_used_to_hot_or_cold/ | {
"a_id": [
"e2guppj"
],
"score": [
5
],
"text": [
"Your body is really, really good at keeping things constant. When you’re hot, things like sweating or making the tubes that carry blood bigger allow your body to cool down, and when you’re cold your body burns more food because doing do releases ... | [] | [] | [
[]
] | |
dq38wx | Why did the Pope give his blessing to William the Bastard to invade Anglo-Saxon England? | The Anglo-Saxons practiced Christianity and accepted the authority of the Roman Catholic Church, yet the Pope gave his permission to William the Bastard to invade England to "advance the Christian religion." What practices in the Anglo-Saxon Church caused them to gain the scorn of the Pope? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dq38wx/why_did_the_pope_give_his_blessing_to_william_the/ | {
"a_id": [
"f60s1hz",
"f61jgtn"
],
"score": [
58,
5
],
"text": [
"So this is a little difficult to fully tease out. Anglo-Saxon England had been Christian for a long time when William pressed his claim to the throne. It was converted over the course of the 7th century and had ceased to ... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/d5vjan/why_did_pope_alexander_ii_support_williams_claim/"
]
] | |
4x2yk3 | Is there any actual scientific evidence for such a thing as severe pornographic addiction? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/4x2yk3/is_there_any_actual_scientific_evidence_for_such/ | {
"a_id": [
"d6cmuc8"
],
"score": [
8
],
"text": [
"From Internet Pornography Use: Perceived Addiction, Psychological Distress, and the Validation of a Brief Measure, published by Grubbs, Volk, Pargament and Exline in 2015 on Journal of Sex & Marital Therapy. They test several college students a... | [] | [] | [
[]
] | |
70xd7s | why is it that we can hear more ambient and softer noises while wearing earphones rather than listening to something via a speaker. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/70xd7s/eli5_why_is_it_that_we_can_hear_more_ambient_and/ | {
"a_id": [
"dn6l2x4"
],
"score": [
2
],
"text": [
"I assume you mean \"ambient and softer noises\" *from the audio source*, not the background, yes?\n\nIf not, I have no idea what you're talking about. But if so, it's a question of volume contrast.\n\nThose ambient/softer noises are a lot quieter... | [] | [] | [
[]
] | ||
25lmvs | What happens on a cellular level when a dry plant seed is introduced to water? | I have flower seeds that have been dry for years that will still grow if planted. How is this possible? How do the cells stay alive/viable? | askscience | http://www.reddit.com/r/askscience/comments/25lmvs/what_happens_on_a_cellular_level_when_a_dry_plant/ | {
"a_id": [
"chif1tm"
],
"score": [
3
],
"text": [
"Seeds if kept properly can last many years. Some plants may only last a year or two but it's not uncommon for 5 year old seeds to be viable. Since warmth and moisture/water is crucial for germination, as long as the seeds were kept in a cool, dry... | [] | [] | [
[]
] | |
2432y0 | what happens to the money in a cash register at the end of the day? | At, say, McDonald's. After the store closes, there is money in the registers. Where does it go? Does someone come pick it up? Does someone send it somewhere? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2432y0/eli5what_happens_to_the_money_in_a_cash_register/ | {
"a_id": [
"ch342bh",
"ch3436a",
"ch3531o"
],
"score": [
2,
8,
2
],
"text": [
"It gets counted, then put in the safe. The next day it will go to the bank. \n\nSource: Ex Mc'Ds closing manager. ",
"At the end of the shift, either the cashier and/or their manager (or sometimes i... | [] | [] | [
[],
[],
[]
] | |
33lfqx | Why does hot air deform ? | This might be a stupid question, but could somebody explain why hot air looks wavy? I always see that on a long road in a desert, the air becomes deformed and you practically see the heat. This just happens in general, so you can also this happen when you barbeque.
I hope my question is clear enough to get an answer. | askscience | http://www.reddit.com/r/askscience/comments/33lfqx/why_does_hot_air_deform/ | {
"a_id": [
"cqlzsdo",
"cqm5zvi"
],
"score": [
5,
2
],
"text": [
"Changing the temperature of air changes its density, which changes its refractive index. This means that light passing through highly varying gradients of temperature doesn't pass straight through, but instead is deflected.\... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Rayleigh%E2%80%93Taylor_instability"
],
[]
] | |
55pc9i | How was the reunification of Germany handled within the military? | Considering that the two nations were equipped with vastly different equipment, how was the process of standardizing the new military handled? Did they scrap all of east germany's soviet equipment or was it sold back to the USSR/Russia? Or did they simply put it all in storage and still have some old T-72's that they c... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/55pc9i/how_was_the_reunification_of_germany_handled/ | {
"a_id": [
"d8cwn9a",
"d8dizaq"
],
"score": [
7,
5
],
"text": [
"With the reunification in 1990 the East German Army (NVA = Nationale Volksarmee) was officially disbanded. Their equipment was given to the German government and eventually sold off or given to other countries. Most personel... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/43phaq/was_there_animosity_between_east_and_west_german/",
"http://www.imdb.com/title/tt0424297/"
]
] | |
3l3j3k | why do we need 2 people to reproduce? how did we evolve to be this way? why not 1 or 3? | It seems logical but also random. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3l3j3k/eli5_why_do_we_need_2_people_to_reproduce_how_did/ | {
"a_id": [
"cv2vgjm"
],
"score": [
5
],
"text": [
"Well, you get problems with asexual reproduction (1 member reproducing by itself) because it has very little genetic variability. You don't mix genes around with others so you're more vulnerable to specific threats, like disease, than if you mix ... | [] | [] | [
[]
] | |
bqoiqx | why is it okay to eat blue cheese, but not other things that are moldy? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bqoiqx/eli5_why_is_it_okay_to_eat_blue_cheese_but_not/ | {
"a_id": [
"eo68ngo",
"eo6cml3",
"eo6qxl0",
"eo6t0kw",
"eo6ufnj",
"eo6wsug",
"eo6xnt9",
"eo6ym2h",
"eo7304z",
"eo7vwgm",
"eo81rpe",
"eo83umq",
"eo84zgz",
"eo8mvaq"
],
"score": [
5865,
685,
173,
17,
33,
56,
20,
3,
3,
1... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
5bgs1z | when one candidate loses to another in an election, what happens to all their unsold memorabilia (hats, t-shirts, etc.)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5bgs1z/eli5_when_one_candidate_loses_to_another_in_an/ | {
"a_id": [
"d9oc1sb"
],
"score": [
4
],
"text": [
"Well, it's a common practice to make victory memorabilia for both teams in a major sports championship and then donate the losing team's stuff to poor people overseas. I imagine something similar happens. "
]
} | [] | [] | [
[]
] | ||
2day17 | why is blurred lines such a bad song? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2day17/eli5_why_is_blurred_lines_such_a_bad_song/ | {
"a_id": [
"cjnru2n",
"cjnrwia",
"cjns4te"
],
"score": [
4,
2,
12
],
"text": [
"Its sounds like its promoting rape and violence against women. Victims often hear those things from their attackers. And objectively, it does fit the idea of a rape in progress. Someone says no, but \"... | [] | [] | [
[],
[],
[]
] | ||
30vuub | how does a dull object, like a fan, become more akin to a knife or blade when it moves at a high speed? | Title. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/30vuub/eli5_how_does_a_dull_object_like_a_fan_become/ | {
"a_id": [
"cpwb4t6",
"cpwc9re"
],
"score": [
3,
3
],
"text": [
"it's all about force applied over an area. \n\nif a steel rod is swung fast enough, it'll sever you in two just like a knife. which is usually the case in construction accidents. ",
"I did research this summer on how... | [] | [] | [
[],
[]
] | |
506n4z | how are elephants able to swim? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/506n4z/eli5_how_are_elephants_able_to_swim/ | {
"a_id": [
"d71kasf"
],
"score": [
2
],
"text": [
"Elephants do not have stubby extremities, they have pretty long legs and their joint aren't inflexible. An aligator has stubby extremities and inflexible joints. \n\nElephants for one are fat, they're large and fat and round. They actually float ... | [] | [] | [
[]
] | |
2vkw35 | why is the understanding of rock formation important in finding oil? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2vkw35/eli5_why_is_the_understanding_of_rock_formation/ | {
"a_id": [
"coijyxn",
"coipxun"
],
"score": [
3,
2
],
"text": [
"Only certain rock formations contain oil. Typically porous rocks with voids. Some of it eventually reaches the surface and seeps out naturally into land or water, but most of it eventually comes up against a layer of rock th... | [] | [] | [
[],
[]
] | ||
ooav4 | Dark Energy and faster than the Speed of light? | askscience | http://www.reddit.com/r/askscience/comments/ooav4/dark_energy_and_faster_than_the_speed_of_light/ | {
"a_id": [
"c3iqyoe",
"c3irh0n"
],
"score": [
2,
2
],
"text": [
"You're messing things up. The matter (Galaxies) expelled in the Big Bang on the opposite side of the Universe, although they were created at the same time, are not yet visible to us.\n\nIn the Big Bang, specifically in the f... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Redshift"
]
] | ||
23m0hb | Why did Russia give up its Austrian zone of occupation do easily? Why didn't they create an Austrian DDR? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/23m0hb/why_did_russia_give_up_its_austrian_zone_of/ | {
"a_id": [
"cgyfaqj",
"cgyicn0"
],
"score": [
29,
23
],
"text": [
"There have been a few posts about this recently.\n\n_URL_0_\n\nTD;LR Austria was split from 1945 to 1955 and was reunited in 1955 under the condition they remain neutral. I couldn't find the specific thread with this rep... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/1stom4/how_did_austria_manage_to_not_be_split_like/"
],
[]
] | ||
tex26 | why you need uranium or plutonium for a nuclear bomb when any atom can be split? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/tex26/eli5_why_you_need_uranium_or_plutonium_for_a/ | {
"a_id": [
"c4m0orr"
],
"score": [
4
],
"text": [
"it's easier to split a heavy, unstable radioactive element. \n"
]
} | [] | [] | [
[]
] | ||
1u6wko | 20 years ago on this day, the Zapatista rebellion broke out in Chiapas, Mexico. What are the important things to know about the lead-up to the rebellion, and how it played out in 1994? | [Here](_URL_0_) is a BBC overview for those who have no idea what I'm talking about, and want some kind of reference point. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1u6wko/20_years_ago_on_this_day_the_zapatista_rebellion/ | {
"a_id": [
"cefc1xb"
],
"score": [
82
],
"text": [
"When the Zapatistas began their rebellion twenty years ago, they were unleashing new currents of libertarian socialism and drawing from long traditions of indigenous resistance and communitarian values. Pre-Columbian indigenous America was as so... | [] | [
"http://www.bbc.co.uk/news/world-latin-america-25550654"
] | [
[
"http://lanic.utexas.edu/project/Zapatistas/chapter01.html",
"http://www.reddit.com/r/AskHistorians/comments/1jt6st/tuesday_trivia_askhistorians_wide_world_of_sports/cbid25t",
"http://www.reddit.com/r/AskHistorians/comments/1h0bsq/what_started_the_mexican_revolution_and_who_were/capqckl",
"http://... | |
299zqx | the story of the original planet of the apes franchise | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/299zqx/eli5the_story_of_the_original_planet_of_the_apes/ | {
"a_id": [
"ciiv7l0",
"ciivhm0"
],
"score": [
10,
2
],
"text": [
"Astronaut goes through wormhole, crashes on planet where apes are the dominant species, it was Earth all along and he's in the future.",
"The same as this one, except this one starts with the beginning of the Ape world,... | [] | [] | [
[],
[]
] | ||
5dlbin | the unexpected hanging paradox. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5dlbin/eli5_the_unexpected_hanging_paradox/ | {
"a_id": [
"da5fjta",
"da5ftlp",
"da5poac"
],
"score": [
16,
119,
7
],
"text": [
"Basically someone is sentenced to death and the judge says, \"were gonna hang you this week at noon, but I'm not gonna tell you what day cause I want it to be an unpleasant surprise.\" The dead man t... | [] | [] | [
[
"https://youtu.be/vxlCiV_axQ0"
],
[],
[]
] | ||
69xvgs | In the period from around 350 BCE to 50 BCE, the Roman Empire expanded from being a small city state, to becoming an empire encompassing large parts of the Mediterranean area. What consequences did the expansion entail for the Roman society under the Republic? | Edit: Some motivation for this question. There seems to be many answers concerning the "outwards" influence, i.e. reasons for the Roman imperialism. I am more concerned with influence in the other direction, namely how the expansion affected Roman society. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/69xvgs/in_the_period_from_around_350_bce_to_50_bce_the/ | {
"a_id": [
"dhajnuw",
"dhaopn2"
],
"score": [
3,
2
],
"text": [
"You would get a different answer depending on who you asked. \n\n\nTake for example Cato the Elder. He was staunchly conservative and strongly believed that Carthage and Greece polluted the pureness of Rome. (He would push f... | [] | [] | [
[],
[]
] | |
24m4f6 | what prevents underage people from buying alcohol online? | I occasionally buy wine over the internet, and it occurred to me the other day I have never been required to provide proof I was of age (I am) to do so. Most retailers require you to enter your date of birth or to tick a box saying you are old enough, but don't require proof of age. So how do they make sure they are no... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/24m4f6/eli5what_prevents_underage_people_from_buying/ | {
"a_id": [
"ch8gbes"
],
"score": [
3
],
"text": [
"I bought my GF a wine subscription online; it was pretty much up to the delivery driver to verify that the intended recipient was over 21 and no one but the intended recipient could sign for it."
]
} | [] | [] | [
[]
] | |
1biwc3 | how does a woman menstruate after undergoing tubal ligation? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1biwc3/how_does_a_woman_menstruate_after_undergoing/ | {
"a_id": [
"c971los",
"c971m36"
],
"score": [
4,
4
],
"text": [
"Like normal. I'm not sure why you think that tubal ligation would affect menstration. Perhaps you have a misconception either about what tubal ligation is, or how menstration works.",
"The same way she did before but w... | [] | [] | [
[],
[]
] | ||
51je4v | What is the effect of Jupiter's pull on the sun? | So I'm watching a documentary (2008) that is talking about looking for other planets and how they watch a star to see if it "wobbles" because that would show the gravitational pull of planets orbiting that star. They go on to say Jupiter pulls the sun 0.5 a million miles side to side when it orbits. And it takes 12 yea... | askscience | https://www.reddit.com/r/askscience/comments/51je4v/what_is_the_effect_of_jupiters_pull_on_the_sun/ | {
"a_id": [
"d7cg11v",
"d7cg2er",
"d7cnk5r"
],
"score": [
9,
4,
5
],
"text": [
"It's a good queston. I think a more precise way of describing this is that both Jupiter and the sun revolve around the center of mass of the solar system. I believe I read recently that that is locate... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Barycenter#/media/File:Solar_system_barycenter.svg"
]
] | |
2vrowu | why did i get multiple nosebleeds every day when i was growing up, but now i don't? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2vrowu/eli5_why_did_i_get_multiple_nosebleeds_every_day/ | {
"a_id": [
"cokaxwt",
"cokbiat",
"cokbnco"
],
"score": [
2,
2,
3
],
"text": [
"Maybe you dropped a coke habit? ;)\n\n\nOr more likely you stopped picking your nose as much?",
"I would get nosebleeds when I was younger after I consumed a lot of salt (I was waaayyyy into salt as... | [] | [] | [
[],
[],
[]
] | ||
2fzhu4 | What's the story behind why the Nazis chose to put "Arbeit Macht Frei," of all phrases, on the gates of concentration camps? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2fzhu4/whats_the_story_behind_why_the_nazis_chose_to_put/ | {
"a_id": [
"cke83pi"
],
"score": [
13
],
"text": [
"There are several versions of the history of that phrase, but the most likely one is that it was coined by Heinrich Beta in 1845. He was publicist, especially for national economy topics, and he wrote on religious faith, saying that blessing can... | [] | [] | [
[
"http://imgur.com/VmdpNq6"
]
] | ||
ujsnw | Why is there a lack of history texts covering 20th century Australia and New Zealand? | I was recently trying to read up on Aussie and Kiwi history because I realized I knew almost none, but I was having difficulty finding any good 20th century histories or biographies. Most texts seem to cover pre-colonial aboriginal life or colonization and exploration. I would love to know why most all of the literatur... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/ujsnw/why_is_there_a_lack_of_history_texts_covering/ | {
"a_id": [
"c4w1qyo"
],
"score": [
2
],
"text": [
"There are quite a few, it depends on what you are looking for... The absolute canon of Australian history is - A History of Australia by Manning Clark\n\nMost of his work is also very good:\n\n* _URL_0_\n\n\nThere are many well known public histo... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Manning_Clark",
"http://en.wikipedia.org/wiki/Robert_Manne",
"http://en.wikipedia.org/wiki/John_Hirst_(historian)",
"http://shop.abc.net.au/products/under-the-influence-a-history-of-alcohol-in-australia",
"http://en.wikipedia.org/wiki/Geoffrey_Blainey",
"http:... | |
68gb5g | World war 1 records | Can someone tell me what regiment and Front/Battles my relative was in, I'm having a hard time reading it. Thanks.
_URL_0_ | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/68gb5g/world_war_1_records/ | {
"a_id": [
"dgydu7z"
],
"score": [
2
],
"text": [
"Ahh, the joys of primary source records!\n\nI can only partially parse them myself - there's a lot of shorthand and abbreviations as you can probably tell - but the basic picture is that your relative spent most of his wartime service in the 3rd ... | [] | [
"https://recordsearch.naa.gov.au/SearchNRetrieve/Interface/ViewImage.aspx?B=8094745"
] | [
[]
] | |
1643em | Translation Request: Ancient Greek Inscription | Dear r/AskHistorians,
My uncle is a history teacher in Turkey and he’s an artifact enthusiast.
[His hometown Doganhisar,](_URL_0_) is an ancient Greek town and is known to house many valuable artifacts. He has photographed many Greek inscriptions scattered around the town and he would be very happy if you could give ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1643em/translation_request_ancient_greek_inscription/ | {
"a_id": [
"c7sjojb",
"c7t4a51"
],
"score": [
14,
3
],
"text": [
"I can tell you right from a cursory glance that this does not seem to be in either the Attic or the 'Koine' version of the Greek alphabet. There are a couple of irregular characters that mark it out as a specific local alph... | [] | [
"https://maps.google.com/maps?q=Do%C4%9Fanhisar,+Turkey&hl=en&ie=UTF8&sll=25.075941,55.229816&sspn=0.675408,1.352692&oq=doganhi&t=h&hnear=Do%C4%9Fanhisar,+Turkey&z=14",
"http://i.imgur.com/LUSt1.jpg"
] | [
[],
[]
] | |
200whb | why is skin so "stretchy"? | For ex...
When a woman becomes pregnant, her skin seems to stretch/grow(?), for the unborn child.
Or when a person loses a lot of weight, has the excess skin, and has a hard time losing it.
Or an old person's skin.. my grandmother used to show me her smooth, delicate skin as she pinched it; it would stay in place... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/200whb/eli5_why_is_skin_so_stretchy/ | {
"a_id": [
"cfyrgnf"
],
"score": [
2
],
"text": [
"Imagine how long our species would last if a pregnant woman's skin didn't stretch."
]
} | [] | [] | [
[]
] | |
1k0cyd | Did chain restaurants exist before the rise of mass production? If so, how successful were they, and which ones were the most well known? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1k0cyd/did_chain_restaurants_exist_before_the_rise_of/ | {
"a_id": [
"cbk7fuo",
"cbk8afm"
],
"score": [
29,
46
],
"text": [
" Certainly no historian here, but I do love history. Maybe I can get the ball rolling here with this thread's first comment...\n\n\nI'm not sure what you mean by the \"rise of mass production\" as that sounds vague to me.... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Fred_Harvey_Company",
"https://en.wikipedia.org/wiki/Fred_Harvey_%28entrepreneur%29"
],
[]
] | ||
6nam5d | Has the United States ever used biological weapons in warfare? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6nam5d/has_the_united_states_ever_used_biological/ | {
"a_id": [
"dk8y8gj",
"dk93ldu"
],
"score": [
2,
5
],
"text": [
"I've never seen any documentation ever alluding to the release of a biological weapon by the United States during a time of war. Biological weapons on the Weapons of Mass Destruction scale are in heavy competition with nucle... | [] | [] | [
[],
[]
] | ||
5pw7f1 | why new smartphones are getting more fragile and more impractical? | New Iphone without P2, new LG without SD and permanent baterry, new screen resolutions that will screw apps.
Where this tendency comes from and why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5pw7f1/eli5_why_new_smartphones_are_getting_more_fragile/ | {
"a_id": [
"dcujqha"
],
"score": [
3
],
"text": [
"If the companies make their products more prone to needing repair/ breaking, people will buy more of them, and the companies will make more money from more sales."
]
} | [] | [] | [
[]
] | |
amdxa7 | Search programs for Historians | Hi historians of reddit,
& #x200B;
(new account due to doxxing etc.) I have started my PhD just yesterday. The subject falls within the confines of the history of religion. I am confident in my abilities surrounding the religion part, but the history part not so much (good thing I have some years to work on it).
&... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/amdxa7/search_programs_for_historians/ | {
"a_id": [
"eflljs5",
"eflxjj5"
],
"score": [
4,
2
],
"text": [
"Could you explain further? Do you want a list of digital archives? Are you looking for a tool to search exclusively digital archives? Or are you looking for a text mining/ data analysis tool? \n\nIf you're looking for digita... | [] | [] | [
[],
[
"https://programminghistorian.org/en/lessons/extracting-keywords",
"https://programminghistorian.org/en/lessons/text-mining-with-extracted-features",
"https://programminghistorian.org/",
"https://programminghistorian.org/en/lessons/corpus-analysis-with-antconc",
"https://programminghisto... | |
fsbs83 | can sugar save me from dying of thirst? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fsbs83/eli5_can_sugar_save_me_from_dying_of_thirst/ | {
"a_id": [
"fm0hltu",
"fm0jlo2"
],
"score": [
2,
2
],
"text": [
"Your cellular respiration should be so high that you had to consume tons of sugar.\n\nA human needs at least 1.5 liters of water a day. Water has a molecular weight of about 18g/mol, so you need about 83 moles. You need 1 su... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Fennec_fox",
"https://en.wikipedia.org/wiki/Kangaroo_rat",
"https://en.wikipedia.org/wiki/Xerocole"
]
] | ||
366obt | why does 720p look fine on my 32 inch tv but noticeably bad on my 23-inch pc monitor? | I never understood why this is, hoping someone with more knowledge can help me understand what's going on here. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/366obt/eli5_why_does_720p_look_fine_on_my_32_inch_tv_but/ | {
"a_id": [
"crb7cut",
"crb86jb"
],
"score": [
8,
7
],
"text": [
"Is 720p the native resolution of the 32 inch TV? It almost certainly isn't the native resolution of the PC display. That could be part of it. Native resolutions will always look better because you don't wind up with \"hal... | [] | [] | [
[],
[]
] | |
ajyzhy | How frequently do black holes form? | I’m not very well informed in the subject but I read they are formed when neutron stars collide or a stars mass collapses down. I was just wondering how frequent this could be. | askscience | https://www.reddit.com/r/askscience/comments/ajyzhy/how_frequently_do_black_holes_form/ | {
"a_id": [
"ef1szgz"
],
"score": [
2
],
"text": [
"It is expected that we have roughly one supernova every 25 years in our galaxy ([source](_URL_0_)) but not all lead to a new black hole. I don't know which fraction does."
]
} | [] | [] | [
[
"https://arxiv.org/abs/1306.0559"
]
] | |
4mnhtv | When I walk up a flight of stairs, am I burning the same amount of energy (i.e. calories or joules) the gravitational potential energy that I've created? | For example, I weigh about 90 KG. If I go up 8 meters on a few flights of stairs - basic physics says that Mass x Accel. of Gravity x Height = the potential energy created in lifting that object to that height. In that example, 90 KG * 9.8 m/s2 * 8 meters = 7,056 joules, or about 1.7 kCals. So, am I burning exactly tha... | askscience | https://www.reddit.com/r/askscience/comments/4mnhtv/when_i_walk_up_a_flight_of_stairs_am_i_burning/ | {
"a_id": [
"d3wtw5m",
"d3xojvi"
],
"score": [
7,
7
],
"text": [
"From the physics side, you are burning at least that many kcals. But the body is not that efficient (you burn calories when standing still), so certainly you are burning more. Exactly how more depends on the person's daily c... | [] | [] | [
[],
[]
] | |
23k39a | what is chemically happening in the brain upon eating a marijauna laced brownie? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23k39a/eli5_what_is_chemically_happening_in_the_brain/ | {
"a_id": [
"cgxrtt2"
],
"score": [
2
],
"text": [
"Same thing as if you smoked it. THC is released into the bloodstream, although when you smoke it, it is instantly released. When you eat an edible (a brownie, any food item with THC), it has to go through the digestive tract and such. It thus tak... | [] | [] | [
[]
] | ||
mh6qd | Does String Theory have any guess/explanation where the energy to vibrate their strings comes from? Does the energy just run out? Is somehow fed by some sort of "quantum fluctuation"? | askscience | http://www.reddit.com/r/askscience/comments/mh6qd/does_string_theory_have_any_guessexplanation/ | {
"a_id": [
"c30vr6x",
"c30vr6x"
],
"score": [
3,
3
],
"text": [
"Energy is not a *thing* it is a number you can calculate. Anyway, remember that things set in motion will stay in motion unless acted upon, right? (this is a huge abuse of language, but it's close enough for our purposes) In... | [] | [] | [
[],
[]
] | ||
3u1f94 | If neutrinos do not interact with regular matter, how would they behave in the presence of a black hole? | askscience | https://www.reddit.com/r/askscience/comments/3u1f94/if_neutrinos_do_not_interact_with_regular_matter/ | {
"a_id": [
"cxb6w3o",
"cxb7nge"
],
"score": [
35,
14
],
"text": [
"Neutrinos do interact gravitationally, as any form of energy-momentum **must** do, and so they fall in black holes.",
"And to clarify, neutrinos do interact through the weak force too."
]
} | [] | [] | [
[],
[]
] | ||
2hjd53 | why can i pour oil into boiling water, but water poured into hot oil explodes into the air? | I was making pasta and sauteeing chicken recently. I poured olive oil into the pasta water and it was totally fine, and then a drop of water fell into the chicken pan and popped up into the air. Why, science, why?
Edit: Thanks for all the responses, people! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2hjd53/eli5_why_can_i_pour_oil_into_boiling_water_but/ | {
"a_id": [
"ckt6pvw",
"ckt6qxf",
"ckt6u3y",
"ckt820d",
"cktbkye"
],
"score": [
4,
3,
41,
4,
2
],
"text": [
"When the oil goes into the pot of water, the temperature of the water is well below the boiling point of the oil. \nWhen the drop of water falls into a pan o... | [] | [] | [
[],
[],
[],
[],
[]
] | |
4i7hpc | how do respective governments pay for free college in other developed countries and why will that not work in the us? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4i7hpc/eli5how_do_respective_governments_pay_for_free/ | {
"a_id": [
"d2vr186"
],
"score": [
4
],
"text": [
"Short answer: American culture is more tax-averse than most of the rest of the developed world. Free college means higher taxes, and Americans are extremely hesitant to support anything that takes money out of their paycheck."
]
} | [] | [] | [
[]
] | ||
19zhx2 | Does the moon have enough gravity to keep a satellite in orbit? | askscience | http://www.reddit.com/r/askscience/comments/19zhx2/does_the_moon_have_enough_gravity_to_keep_a/ | {
"a_id": [
"c8spjxh",
"c8splf7",
"c8sq3ap"
],
"score": [
8,
2,
5
],
"text": [
"Yes. The Apollo missions (Apollo 8, 11, 12, 13, 14, 15, 16, 17) were effectively lunar satellites for a time.",
"Seven [Apollo Command Modules](_URL_0_) have been in lunar orbit with people in them.... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Apollo_Command/Service_Module",
"http://science.nasa.gov/science-news/science-at-nasa/2008/20feb_orbitingthemoon/"
],
[]
] | ||
6dfukb | how does dropping things in fluids eg water cause a splash? | Follow up: what are the parameters that affect the shape / height of the splash? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6dfukb/eli5_how_does_dropping_things_in_fluids_eg_water/ | {
"a_id": [
"di2covw",
"di2d47p"
],
"score": [
3,
2
],
"text": [
"When something hits the water, it pushes the water out of the way. The wave of water can only go so far before gravity starts to pull it back. So then, the water starts to rush back into the void that was created. It gain... | [] | [] | [
[],
[]
] | |
2gczzi | Is my Y chromosome identical to my dad's? | I was reading on /r/shittyaskscience and I came across [this comment](_URL_0_), and I was wondering whether it was real. | askscience | http://www.reddit.com/r/askscience/comments/2gczzi/is_my_y_chromosome_identical_to_my_dads/ | {
"a_id": [
"ckhw2q8"
],
"score": [
18
],
"text": [
"Well, the part about the Y is true, it's the same as your dads Y* and that is that same as his dads Y* andsoforth. \n\nIn this statement he/she is wrong: \"So you don't know whether your X chromosome comes from, but you know where your Y chromos... | [] | [
"http://www.reddit.com/r/shittyaskscience/comments/2gbdf7/im_actually_a_scientist_and_my_genetics_student/ckhk1gf"
] | [
[]
] | |
33grpl | what's the evolutionary purpose of the little triangle of cartilage in front of our ear holes? | [This thing](_URL_0_). Vestigial from an aquatic life? To break up airflow? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33grpl/eli5whats_the_evolutionary_purpose_of_the_little/ | {
"a_id": [
"cqkpw5o",
"cqkrbqt"
],
"score": [
4,
7
],
"text": [
"Sound bounces around your ear and then bounces off of that triangle down your ear canal. Without it, much sound wouldn't actually enter your ear and go into the canal, greatly reducing yoyr ability to hear",
"It's calle... | [] | [
"http://i.imgur.com/mIw8pWl.jpg"
] | [
[],
[
"http://en.wikipedia.org/wiki/Tragus_(ear\\)"
]
] | |
3kipq6 | Where can I find archived news articles from the early 20th century on the internet? I'm trying to research on migration in the early 20th century and I couldn't find a website that allows you to read archived news articles for free. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3kipq6/where_can_i_find_archived_news_articles_from_the/ | {
"a_id": [
"cuxsvff"
],
"score": [
2
],
"text": [
"_URL_0_ but it's mainly for the NY metro area "
]
} | [] | [] | [
[
"Fultonhistory.com"
]
] | ||
b8q93k | Where would one go to better understand the 7 Years War? | I generally know about the history of the American revolution and the time around it and I've often seen sources touch on the 7 Years War and how big it was but I haven't seen anything that talks in depths about it. Any good books or podcasts? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/b8q93k/where_would_one_go_to_better_understand_the_7/ | {
"a_id": [
"ejzqh3v"
],
"score": [
4
],
"text": [
"You might look into Fred Anderson's *Crucible of War: The Seven Years' War and the Fate of Empire in British North America, 1754-1766*. It is also available on Audible."
]
} | [] | [] | [
[]
] | |
19kprz | Why are distant white clouds not blue-tinted? | The further away something is, the bluer it appears, due to Rayleigh scattering. Which is also why the sky appears blue when lit up by the sun.
However, I have never seen a distant white cloud be any less white than close ones. When it comes to darker clouds, which are grayish up close, they DO get bluer in the dista... | askscience | http://www.reddit.com/r/askscience/comments/19kprz/why_are_distant_white_clouds_not_bluetinted/ | {
"a_id": [
"c8oy9o8",
"c8p7tm2"
],
"score": [
14,
3
],
"text": [
"Rayleigh scattering redirects shorter wavelength light (primarily blue) coming from a source into another direction. This results in two effects:\n\n1- If you look at something relatively bright (say the sun) it appears red... | [] | [] | [
[],
[
"http://i.imgur.com/RrsQpX9.jpg"
]
] | |
2st861 | Store bought balloons into outer space? | Few questions...
1. Say if you filled and tied MANY store bought balloons with helium and let them go. Roughly How many would it take to reach a point of 0 gravity up there? Or would they pop before?
2. What happens after they reach the point of 0 gravity? Would they reach "space" and just randomly float away?
3. Th... | askscience | http://www.reddit.com/r/askscience/comments/2st861/store_bought_balloons_into_outer_space/ | {
"a_id": [
"cnspuvo",
"cnspvt7"
],
"score": [
3,
2
],
"text": [
"There is no point of zero gravity. Otherwise how would the moon orbit?\n\nThings in orbit are in *free fall*, accelerating downwards just like any other object, but they are also travelling sideways so that the distance the... | [] | [] | [
[],
[
"http://www.redbullstratos.com/technology/high-altitude-balloon/"
]
] | |
3e3vnl | how do people figure out the exact part that caused a catastrophic failure? | For example, when a plane crashes, how do they get the information from a blackbox that says part xyz failed or had this amount of pressure causing it to snap? Do they monitor every stress? Or what about the recent SpaceX rocket failure. How do they find out that it was a strut that failed? It doesn't seem like a strut... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3e3vnl/eli5_how_do_people_figure_out_the_exact_part_that/ | {
"a_id": [
"ctb8kzy"
],
"score": [
2
],
"text": [
"If you found a glass on the ground in fragments you could reasonably guess it was dropped from a height. If it were next to a ledge you could reasonably guess it fell from there specifically. If you live alone and have a cat, and don't remember d... | [] | [] | [
[]
] | |
2vdska | How does the human brain make estimations? | I was watching a let's play as the player was talking about buying an item in the game. After getting distracted, he went to buy another item, which was worth about $38,000. His initial amount of money was about $180,000 and the original item he was interested in buying was $25,000. As soon as I saw the $38,000 I knew ... | askscience | http://www.reddit.com/r/askscience/comments/2vdska/how_does_the_human_brain_make_estimations/ | {
"a_id": [
"cohfhbf"
],
"score": [
3
],
"text": [
"There's a lot of debate over what mental imagery really is, whether it exists in the way we describe it or whether it really helps explain anything. \n\nBut I'd imagine you are using some sort of simplistic imagery, in which you imagine the two ... | [] | [] | [
[]
] | |
k0pjd | college football divisions. there's no playoffs? playoffs? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/k0pjd/eli5_college_football_divisions_theres_no/ | {
"a_id": [
"c2gmqlr",
"c2gvkiz",
"c2gvkiz",
"c2gmqlr"
],
"score": [
6,
2,
2,
6
],
"text": [
"Basically think about it this way: you want to see who the best kickballer in the school is. You have a regular season where there are lots of matches, but not everybody plays ever... | [] | [] | [
[],
[],
[],
[]
] | ||
1wl41l | why do special effects look so much better in a movie theater than on a computer? | I'm watching Olympus Has Fallen on Netflix and some of the CGI/Green Screen effects look terribly obvious. I never saw it in theaters, but there are other movies that look pretty good in theaters but then when I go watch them on Netflix or something the special effects look terrible.
Is it just the quality is higher ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1wl41l/eli5_why_do_special_effects_look_so_much_better/ | {
"a_id": [
"cf305pr"
],
"score": [
3
],
"text": [
"The funny thing is that the effects look better in a movie theater because the movie theater quality is worse.\n\nA projector cannot project individual pixels as well as a monitor can so the image is very slightly blurred.\n\nNow, think of a pict... | [] | [] | [
[]
] | |
9tsaqp | Amongst former colonies in Africa, Botswana stands out for growth, political stability, etc, despite suffering massively from the AIDS epidemic. Why is Botswana so unusually successful? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9tsaqp/amongst_former_colonies_in_africa_botswana_stands/ | {
"a_id": [
"e8zn9z0"
],
"score": [
33
],
"text": [
"I doubt the premise of your question.\n\nEconomically speaking, in terms of things like Human Development Index or GDP per capita (PPP), ~~Gabon~~ Botswana is (in 2017) roughly equal to other African former colonies like Algeria, Tunisia, Libya,... | [] | [] | [
[]
] | ||
kol2t | eil5: neutrinos | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/kol2t/eil5_neutrinos/ | {
"a_id": [
"c2lxwp6",
"c2lxwp6"
],
"score": [
2,
2
],
"text": [
"They are really, really, REALLY tiny particles. So tiny that they actually go right through ordinary matter without hitting it most of the time. This is hard to wrap your head around, but try to think of the relative sizes a... | [] | [] | [
[],
[]
] | ||
u799a | Has there ever been a time when technology advanced as rapidly as it does today? | What spurred this question is oddly the movie *Battleship.* Spoilers for anyone who hasn't seen it, but plans to, they have to get a 70 year old warship up and running, and one of the characters states that it would take him 6 weeks to figure out how to operate it. I snickered, but then thought about it some more.
I'v... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/u799a/has_there_ever_been_a_time_when_technology/ | {
"a_id": [
"c4sx2kz",
"c4sxmpn",
"c4t268r"
],
"score": [
3,
9,
5
],
"text": [
"I can't find the source right now but I will keep looking but basically I remember reading once th at the rate of technological progress has actually slowed since the beginning of the Industrial Revolut... | [] | [] | [
[],
[],
[]
] | |
d5y80o | why shouldn’t rubs such as tigerbalm, vicks, etc touch mucous membranes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/d5y80o/elif_why_shouldnt_rubs_such_as_tigerbalm_vicks/ | {
"a_id": [
"f0oof4y"
],
"score": [
6
],
"text": [
"These balms contain camphor, an aromatic chemical which is responsible for much of the smell in them (along with menthol). Camphor is safe to put on your skin, and safe to inhale, but highly toxic in large quantities. You will absorb large quan... | [] | [] | [
[]
] | ||
5q1apx | Why did Comic Book Superhero characters stay relevant/popular in American culture? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5q1apx/why_did_comic_book_superhero_characters_stay/ | {
"a_id": [
"dcvtki2"
],
"score": [
13
],
"text": [
"Comic books in the United States in the format we know them today began with *Action Comics* #1 (1938), which introduced Superman and launched comics as a major industry - but Superman wasn't created out of whole cloth! Comic books started out i... | [] | [] | [
[
"http://www.worldcat.org/title/seduction-of-the-innocent/oclc/213743",
"http://www.worldcat.org/title/history-of-underground-comics/oclc/1017325",
"https://news.illinois.edu/blog/view/6367/204890",
"http://www.worldcat.org/title/superhero-comics-the-illustrated-history/oclc/23732013",
"http://... | ||
4fmz45 | how operating a semi truck transmission differs to that of a manual car. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4fmz45/eli5how_operating_a_semi_truck_transmission/ | {
"a_id": [
"d2a84qv",
"d2a8lub",
"d2afpre",
"d2ag2y0",
"d2aj37q",
"d2ajsf0",
"d2al8c1"
],
"score": [
4,
16,
2,
3,
2,
2,
2
],
"text": [
"No expert on machanics but here is some info from experience working with trucks. You go through all the gears no... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | ||
6hp40i | why do remote controlled helicopters usually have multiple sets of blades while real life helicopters have only one set? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6hp40i/eli5_why_do_remote_controlled_helicopters_usually/ | {
"a_id": [
"dj00m78"
],
"score": [
2
],
"text": [
"The quad-blade setup can be easily stabilized by a computer, but is more failure-prone than a single blade since there's way more moving parts. With modern computer tech, the hardware and sensors required to balance a four blade setup is super ch... | [] | [] | [
[]
] | ||
9wurvn | a lot of companies have contests where you enter for a chance to win something. does anyone actually win anything and, if so, how is it audited to ensure a level playing field or if someone did in fact win the contest? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9wurvn/eli5_a_lot_of_companies_have_contests_where_you/ | {
"a_id": [
"e9ngegw",
"e9ngfaj",
"e9nk7ny",
"e9o6faa"
],
"score": [
3,
11,
2,
2
],
"text": [
"It is all detailed within the rules and terms of the contest. One of the main things is that, at least in the US, you can't require people to pay money to enter a contest, so part... | [] | [] | [
[],
[],
[
"https://www.interactivepromotions.com/"
],
[]
] | ||
d5qggg | Necessity of the Erie Canal? | I notice most of the Erie Canal in upstate New York runs parallel to Lake Ontario. What was the purpose of creating the canal for that entire stretch when goods could’ve theoretically been shipped over Lake Ontario to Oswego or another port and then from there down to Albany and the Hudson? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/d5qggg/necessity_of_the_erie_canal/ | {
"a_id": [
"f0og3er"
],
"score": [
16
],
"text": [
"The reason for having a canal for that entire stretch was that grain ( or anything else) could be loaded on a boat anywhere on the western Great Lakes and sent , by boat, to anywhere on the Atlantic coast. Without it, anyone trying to get grai... | [] | [] | [
[]
] | |
fxueac | Why was Austro-Hungary's performance during WW1 so unimpressive? | I never looked deeply into World War One as a conflict so this question's premise very well may be somewhat incorrect, but I never could figure out why Austrian armies did so mediocre in comparison to Germany despite usually fighting side by side with them against their main adversary (Russia). From the point of bystan... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/fxueac/why_was_austrohungarys_performance_during_ww1_so/ | {
"a_id": [
"fmxtant"
],
"score": [
84
],
"text": [
"This is an outcome of a few different factors, some from pre war failings, some during the war, and some structural the the Empire.\n\nThe pre-war failings come down to preparation. The Austro-Hungarian Empire, mostly due to Hungarian obstructi... | [] | [] | [
[]
] | |
vtu1t | A boy was badly injured in a 'salt-and-ice' challenge. What is the mechanism that causes this sort of extreme injury? | [As reported in this news story](_URL_0_). with a single awful photo.
> *The unidentified youth lay on his stomach during a sleep-over at his house as his brother and a friend put salt in the form of a cross on his back, then put ice cubes atop the salt before applying pressure. The process causes almost immediate pa... | askscience | http://www.reddit.com/r/askscience/comments/vtu1t/a_boy_was_badly_injured_in_a_saltandice_challenge/ | {
"a_id": [
"c57kqn9",
"c57lcwa"
],
"score": [
2,
4
],
"text": [
"The surface of solid ice is 32F, the melting point of water. Adding salt lowers the nelting point to 0F (by definition, actually). This makes the ice cube melt, and get much colder.\n\n_URL_0_\n\nThe injuries are caused by f... | [] | [
"http://www.post-gazette.com/stories/local/neighborhoods-city/boy-12-badly-injured-in-salt-and-ice-challenge-642561/"
] | [
[
"http://en.wikipedia.org/wiki/Freezing-point_depression",
"http://en.wikipedia.org/wiki/Burn"
],
[]
] | |
6ugtrl | in an egg boiler, why is less water needed for more eggs? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6ugtrl/eli5_in_an_egg_boiler_why_is_less_water_needed/ | {
"a_id": [
"dlsk1bx",
"dlsk54r"
],
"score": [
2,
2
],
"text": [
"Just a question of clarification. What is an egg boiler? ",
"The eggs displace a certain amount of liquid. Say you have 15cm diameter pan and you put one egg in it. You fill it 3cm high to cover the egg. That means you h... | [] | [] | [
[],
[]
] | ||
1nqv7f | Why is it that Prokaryotic cells do not NEED organelles in the same way that Eukaryotic cells do? | I understand that Eukaryotic cells need membrane-bound organelles to provide localized micro-environments in order for incompatible metabolic pathways to be carried out simultaneously in the cell.
Can anybody explain how this is accomplished in Prokaryotic cells, who do not have this type of compartmentalization?
Goo... | askscience | http://www.reddit.com/r/askscience/comments/1nqv7f/why_is_it_that_prokaryotic_cells_do_not_need/ | {
"a_id": [
"ccl6x6q",
"cclc7gi"
],
"score": [
8,
3
],
"text": [
"Prokaryotic cells carry out their membrane-bound processes on their cell membrane (for example, cellular respiration); the products of those processes (for example, ATP) then diffuse throughout the cell to where they are nee... | [] | [] | [
[],
[]
] | |
17karo | how did humans first begin communicating? | Like how did people know what someone meant when somebody else said "water" or something? And what about adjectives? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/17karo/eli5_how_did_humans_first_begin_communicating/ | {
"a_id": [
"c86ahh8"
],
"score": [
3
],
"text": [
"Language probably evolved slowly within small groups of human's evolutionary ancestors. \n\nIf you've ever had a dog then you know even they have a form of vocal speech and different noises can mean different things, from \"pay attention to me\" ... | [] | [] | [
[]
] | |
31wc90 | Just snapped a picture of a gigantic halo around the sun. Can someone explain? | _URL_0_
Edit: Sorry for the crappy quality, smartphone cameras aren't exactly stellar at managing extreme lighting conditions. | askscience | http://www.reddit.com/r/askscience/comments/31wc90/just_snapped_a_picture_of_a_gigantic_halo_around/ | {
"a_id": [
"cq60jdf",
"cq78x38"
],
"score": [
3,
3
],
"text": [
"Sun dog. Light refracting off ice crystals.",
"This is **not** a sun dog. Parhelia occurs near the horizon, and creates very distinct left and right bright sections 22 degrees and at the same level as the sun. [This is a... | [] | [
"http://imgur.com/LQAin53"
] | [
[],
[
"http://upload.wikimedia.org/wikipedia/commons/8/88/Fargo_Sundogs_2_18_09.jpg"
]
] | |
2jifkc | Meteorologists of Reddit - When speaking in terms of cold fronts, warm fronts, temperature shifts, etc.; does the temperature move through the air, or does the air of certain temperature itself move more quickly? | askscience | http://www.reddit.com/r/askscience/comments/2jifkc/meteorologists_of_reddit_when_speaking_in_terms/ | {
"a_id": [
"clc21tw"
],
"score": [
13
],
"text": [
"It is almost entirely [advection](_URL_0_): the movement of air itself. Conduction or molecular diffusion of heat (e.g. temperature moving through the air) is generally much weaker. Fronts are the boundaries between two differing air masses an... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Advection"
]
] | ||
23oc86 | How do we know how much of a radioactive element was in a rock when it was made? | So I'm watching through Cosmos and I'm on The Clean Room, where they talk about the age of the earth. I've always thought dating objects with radioactive elements was a pretty awesome concept, but there's one part I've never really been clear on - how do we know how much of the element we're measuring was originally i... | askscience | http://www.reddit.com/r/askscience/comments/23oc86/how_do_we_know_how_much_of_a_radioactive_element/ | {
"a_id": [
"cgyzej3",
"cgz309m",
"cgzcyau"
],
"score": [
38,
10,
5
],
"text": [
"There are a bunch of different types of radiometric dating. Uranium-lead dating works because zircon crystals will incorporate uranium but not lead when they form. Any lead in the crystal was once ura... | [] | [] | [
[],
[],
[
"http://www.reddit.com/r/askscience/comments/23jx0h/askscience_cosmos_qa_thread_episode_7_the_clean/"
]
] | |
22g4kz | If the reason that we cannot see galaxies past a certain distance is that the age of the universe has not allowed light from those galaxies to travel this far yet, does this mean that over enough time we will start to see entirely new galaxies at the max visible distance? | askscience | http://www.reddit.com/r/askscience/comments/22g4kz/if_the_reason_that_we_cannot_see_galaxies_past_a/ | {
"a_id": [
"cgmwub3"
],
"score": [
2
],
"text": [
"No, because the expansion of the universe itself would cause the farthest galaxies to *seem* to be moving away from us greater than the speed of light (they are invisible because their light cannot *in principle* reach us). In trillions and trill... | [] | [] | [
[]
] | ||
54cka6 | why are terraced houses in new york and possibly other places elevated? | I'm not from the US. Not sure how you guys call it, row houses, terraced, townhouses. You often see them being elevated in NY (in films at least). Is this just for possible flooding?
[Long Island, NY](_URL_0_)
[Brooklyn, NY](_URL_2_)
[Montreal](_URL_1_) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/54cka6/eli5_why_are_terraced_houses_in_new_york_and/ | {
"a_id": [
"d80p67s",
"d80qy8m"
],
"score": [
8,
4
],
"text": [
"They have lower levels (originally servants quarters) besides the main entrance, they usually go below street level. Every place is different, but I would assume that the underground pipping as well as water level do not all... | [] | [
"http://c8.alamy.com/comp/C7X20W/attached-houses-under-the-elevated-subway-tracks-in-long-island-city-C7X20W.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Montreal_rue_sherbrooke.JPG/1920px-Montreal_rue_sherbrooke.JPG",
"https://upload.wikimedia.org/wikipedia/commons/2/2a/Row_houses_in_altern... | [
[],
[]
] | |
8uakld | how does algae grow in extremely low light to no light places? | I just had to clean out my air conditioning drain and it made me wonder how that much algae can grow with what seems like no source of energy. I mean its condensed water draining so its not like it has a ton of stuff to "eat" and theres no light in the hose. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8uakld/eli5_how_does_algae_grow_in_extremely_low_light/ | {
"a_id": [
"e1dv4kj"
],
"score": [
21
],
"text": [
"Some stuff called \"algae\" isn't actually algae, but instead is heterotrophic bacteria or fungi, so that's one possibility."
]
} | [] | [] | [
[]
] | |
72enc9 | the concept of friction (static friction)? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/72enc9/eli5_the_concept_of_friction_static_friction/ | {
"a_id": [
"dnhwbq1"
],
"score": [
4
],
"text": [
"Assuming no forces are operating on it, nothing. When forces begin interacting with it in the same direction as friction, friction will retard the force until the friction force is overcome."
]
} | [] | [] | [
[]
] | |
300kje | why can't iran have nuclear weapons | ELI25 is ok too :)
Can someone explain why would it be so bad if Iran developed a nuclear program?
Why does Israel have the right to have nuclear weapons or Pakistan or any other but Iran can't. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/300kje/eli5_why_cant_iran_have_nuclear_weapons/ | {
"a_id": [
"cpnyms5",
"cpnyq1t",
"cpnyv8m",
"cpo0lll",
"cpo2g0n"
],
"score": [
3,
8,
4,
14,
2
],
"text": [
"Because they can't be trusted with them. Kind of like why we are concerned with North Korea having them as well.",
"From a treaty standpoint, Iran signe... | [] | [] | [
[],
[],
[],
[],
[]
] | |
89pi4s | why do supermarkets constantly change the layout of where items are placed? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/89pi4s/eli5_why_do_supermarkets_constantly_change_the/ | {
"a_id": [
"dwsiz6q",
"dwsjh2i",
"dwskxqj",
"dwsl6y7",
"dwsmgd6",
"dwsx8xz",
"dwszfj3",
"dwt022i",
"dwt2oca",
"dwt6dmn",
"dwt6lrw"
],
"score": [
578,
4,
19,
19,
3,
6,
13,
3,
4,
2,
2
],
"text": [
"This is to prevent yo... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
27iaeq | how come even great, well polished video games suffer from characters or objects passing through each other? is collision detecting one of the hardest parts when creating a game? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/27iaeq/eli5_how_come_even_great_well_polished_video/ | {
"a_id": [
"ci13bzb"
],
"score": [
4
],
"text": [
"I posted nothing..."
]
} | [] | [] | [
[]
] | ||
7440z9 | where do other elements come from that aren't h, he, c, ne, o, si, and fe (elements made in stars) and li (at the beginning of the universe along with h, and he) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7440z9/eli5_where_do_other_elements_come_from_that_arent/ | {
"a_id": [
"dnvbccc"
],
"score": [
6
],
"text": [
"They were all made inside of stars. The heavier elements were made in much more massive stars that then exploded into nebulae, which coalesced into planets and smaller stars.\n\nThe only elements not made in stars are the few that we (humans) hav... | [] | [] | [
[]
] | ||
3hpnx4 | what are "eye boogers" and how are they formed? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3hpnx4/eli5_what_are_eye_boogers_and_how_are_they_formed/ | {
"a_id": [
"cu9eile",
"cu9jvlr",
"cu9m7rv",
"cu9np9t",
"cu9pqcn",
"cu9q55h",
"cu9q8r4",
"cu9umq3",
"cu9vhvb",
"cu9wv5x",
"cu9xt7l",
"cua01fh",
"cua1sfi",
"cua4o0e",
"cua4qud",
"cua5cd6",
"cua5kwn",
"cua5w5k",
"cua7yh1",
"cua9421",
"c... | [] | [] | [
[],
[
"http://eyecare.lenstore.co.uk/sleepies-eye-after-waking"
],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
41d3vw | how do eye drops get rid of redness? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/41d3vw/eli5_how_do_eye_drops_get_rid_of_redness/ | {
"a_id": [
"cz1gs7w",
"cz1hkxm",
"cz1nq0t"
],
"score": [
88,
8,
6
],
"text": [
"\"Drops that \"get the red out\" contain chemicals that are called vaso constrictors. The most common one that is used is called phenylephrine. When these drops are put in the eye they cause the muscle... | [] | [] | [
[
"https://answers.yahoo.com/question/index?qid=20080420033644AAlGNdh"
],
[],
[]
] | ||
luipp | Why can I tell when my voice is being picked up by a microphone and when it's not? | I don't just mean hearing it over a p.a. but ordering at a drive through or on the phone.
| askscience | http://www.reddit.com/r/askscience/comments/luipp/why_can_i_tell_when_my_voice_is_being_picked_up/ | {
"a_id": [
"c2vppnu",
"c2vpqax",
"c2vppnu",
"c2vpqax"
],
"score": [
5,
6,
5,
6
],
"text": [
"I assume you are referring to the echo that is intentional included in devices such as phones?",
"Unless you have superb hearing, capable of hearing the shearing stresses with ... | [] | [] | [
[],
[],
[],
[]
] | |
3t4330 | why are saline/silicone breast implants used instead of just transplanting breast tissue from one woman to another? like if one woman has a breast reduction, and another needs an implant, can they not transplant the fat removed from one into another? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3t4330/eli5_why_are_salinesilicone_breast_implants_used/ | {
"a_id": [
"cx2xkm2",
"cx2zbr7"
],
"score": [
4,
2
],
"text": [
"Because taking tissue from one person and implanting into another is more complicated than you might think. There are all sorts of antibodies that have to match, and even then the match is never perfect, so organ recipients... | [] | [] | [
[],
[]
] | ||
ejisju | what's the difference between a "front end developer", ui designer, ux designer, and what do they do? | What's the difference between a "software engineer" and "Front-end developer". For example, if someone is designing the code for Google, who is designing the look of the app?
Like take a popular app like Outlook. I understand that software engineers design the code and stuff, but who decides how it looks, where... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ejisju/eli5_whats_the_difference_between_a_front_end/ | {
"a_id": [
"fcy2bpm",
"fcy8i1v",
"fcynjv0",
"fcyydfr"
],
"score": [
5,
2,
2,
2
],
"text": [
"First off, none of these terms are an exact science. They are certainly not used consistently everywhere, so I'm just providing a decent rule-of-thumb from what I've seen in the in... | [] | [] | [
[],
[],
[],
[
"http://steamattribution.com/"
]
] | |
2b8jnv | the parisian may 1968 riots- can someone clearly explain to me what happened? so much literature and philosophy stemmed from it, but i've never understood it. | I've had people explain it to me before, but it still goes over my head. I've even scoured the internet, but have struggled to find a concise explanation. Students were mad... at something? It's context I wish I had when I read continental philosophers like Deleuze or Derrida. I barely understand the 1968 riot at the C... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2b8jnv/eli5_the_parisian_may_1968_riots_can_someone/ | {
"a_id": [
"cj2u8ci"
],
"score": [
2
],
"text": [
"May 1968 was a time of protest in most of France. The President of France, General de Gaulle, had been in power for 10 years. \n\nIf anything, it was the new and young generation coming upon the scene. This generation was born after the Second Wo... | [] | [] | [
[]
] | |
1p11m0 | What environmental conditions contribute to the development of massive trees, and what advantages do being so large carry? | What specific environmental factors in places like the Sierras, Coastal California, the Pacific Northwest, Southern Australia, or the Philippines promote the growth of such monstrous trees? I'm referring to species such as the Giant Sequoia, Douglas Fir, or Giant Eucalyptus. What advantages are there to these tree sp... | askscience | http://www.reddit.com/r/askscience/comments/1p11m0/what_environmental_conditions_contribute_to_the/ | {
"a_id": [
"ccxqmr1"
],
"score": [
2
],
"text": [
"The main thing that factors into size, is time. trees dont get huge if you cut them down. also these coastal regions tend to be pretty wet, so there is plenty of water for the trees. But evolution wise, being tall means that the tree gets the mos... | [] | [] | [
[]
] | |
2rf2a6 | if humans are natural predators, why don't most possess a natural desire to hunt? and why do some feel remorse after taking an animals life? | My conclusion might be because we can fulfill our desires at the grocery store, but I'm curious what others might think. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2rf2a6/eli5_if_humans_are_natural_predators_why_dont/ | {
"a_id": [
"cnf8wlm",
"cnf8x9h",
"cnf9ngq",
"cnfckwh",
"cnffb14"
],
"score": [
2,
12,
6,
3,
2
],
"text": [
"Because most of us don't need to hunt any more, and we have empathy.",
"Predators don't hunt because they can. They hunt because they must.\n\nFeed a lio... | [] | [] | [
[],
[],
[],
[],
[]
] | |
1cn9iy | On average, how much weight does the earth gain daily from falling space debris? | I only ask because earlier in the week I saw a post about lying out a large sheet, then running a magnet over to collect small fragments of space dust.
Any ideas? | askscience | http://www.reddit.com/r/askscience/comments/1cn9iy/on_average_how_much_weight_does_the_earth_gain/ | {
"a_id": [
"c9izlno"
],
"score": [
2
],
"text": [
"About 40,000 metric tons of space debris is added to the Earth per year, or 100 tonnes per day. But it also loses about twice that mass from its atmosphere, mostly in the form of hydrogen.\n\n_URL_0_"
]
} | [] | [] | [
[
"http://www.bbc.co.uk/news/magazine-16787636"
]
] |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.