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 |
|---|---|---|---|---|---|---|---|---|---|
8zt8jp | Are there any obligate carnivores that are omnivores? | As in, are there any creatures that have both plants and animals in their diet in significant amounts, but must eat meat? Excluding carnviores who incidentally eat plant matter (ex. cats eating grass to get rid of hairballs, wolves eating a few berries in the summer). | askscience | https://www.reddit.com/r/askscience/comments/8zt8jp/are_there_any_obligate_carnivores_that_are/ | {
"a_id": [
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4,
4
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"text": [
"I think grizzly bears fit the bill. They are mostly carnivorous omnviores. They prey on large mammals like deer and moose, and they love fish. They also eat nuts, berries, tubers, and grasses. They probably eat more meat dur... | [] | [] | [
[
"https://www.nps.gov/yell/learn/nature/bearfoods.htm"
],
[
"https://www.livescience.com/39198-crocodiles-alligators-eat-fruit.html"
]
] | |
5zg4dz | if alcohol tastes terrible, why do people drink it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5zg4dz/eli5if_alcohol_tastes_terrible_why_do_people/ | {
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"text": [
"I quite enjoy the taste of beer or cider, especially after a hot sweaty day. And the nice buzz after 2 is calming. I very rarely if ever have more than 3 beers in a sitting (I don'... | [] | [] | [
[],
[],
[],
[]
] | ||
e8pakq | Why can't bacteriophages infect eukaryotic cells? | I've wondered this for a while but never been able to find an answer. | askscience | https://www.reddit.com/r/askscience/comments/e8pakq/why_cant_bacteriophages_infect_eukaryotic_cells/ | {
"a_id": [
"fadnw0t",
"fae2ki1"
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"score": [
15,
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],
"text": [
"All viruses look for a specific site on the cell wall of the cell they are trying to infect. The sites that bacteriophages are looking for only exist on bacteria. This is one major reason why there is a significant risk of ... | [] | [] | [
[],
[]
] | |
4upeqn | if having a straight back is the 'proper' position, why isn't it the 'natural' position? | Not natural as in a straight back often requires deliberate effort to maintain even if the person does not have any diseases. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4upeqn/eli5_if_having_a_straight_back_is_the_proper/ | {
"a_id": [
"d5rn7ja",
"d5rnv2l",
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"score": [
44,
48,
8
],
"text": [
"I'm never going to find this article, but the \"natural\" position is a straight spine, not a curved one-- hold on let me google. \n\nThere was an article saying that the anatomy textbooks are wrong b... | [] | [] | [
[
"http://www.npr.org/sections/goatsandsoda/2015/06/08/412314701/lost-posture-why-indigenous-cultures-dont-have-back-pain"
],
[
"https://www.reddit.com/r/slavs_squatting/",
"http://www.npr.org/sections/goatsandsoda/2015/06/08/412314701/lost-posture-why-indigenous-cultures-dont-have-back-pain"
],
... | |
aj8ah8 | with modern technology, why do pharmacists still exist as a profession? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/aj8ah8/eli5_with_modern_technology_why_do_pharmacists/ | {
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"score": [
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"text": [
"Why do video examples of things exist for games?\n\nPharmacists exist because not everyone c... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
4zfo1z | Why did East Germany do so well in the Olympics, in relation to West Germany and Germany today | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4zfo1z/why_did_east_germany_do_so_well_in_the_olympics/ | {
"a_id": [
"d6vthhh"
],
"score": [
15
],
"text": [
"**Part I**\n\nIt is very tempting to reduce all of the GDR's success in the Olympics from the late 1960s to 1988 to the state's use of anabolic steroids and other performance enhancing drugs. The GDR's program for these substances was quite larg... | [] | [] | [
[]
] | ||
bf0dcp | why does technology seem to develop linear instead of in jumps? | Every year or generation we get a slightly more advanced product and the change doesn't appear to be huge. If they hold back their technology wouldn't other companies just try to be their first to come out with the product? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bf0dcp/eli5_why_does_technology_seem_to_develop_linear/ | {
"a_id": [
"el9urw7"
],
"score": [
10
],
"text": [
"The bleeding edge of research does move in jumps, but manufacturing doesn't.\n\nThe stuff that reaches consumers has to be produced in mass quantities in giant factories. You can't go retrofit the entire assemly line every time there's a resear... | [] | [] | [
[]
] | |
6epff6 | why do printers decide to randomly do...something every so often? | Not sure if this is just something my model of printer does, but every so often my printer will just decide that now is the time to start spinning something, or moving something, or just doing general printer magic. What's that about? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6epff6/eli5_why_do_printers_decide_to_randomly/ | {
"a_id": [
"dic3shr"
],
"score": [
6
],
"text": [
"Ink jet Printer heads need to have the ink wiped off of them before it dries, and also the head needs to be sealed to reduce risk of blockages. It doesn't do this right away because you might still want to print something. It has some logic which... | [] | [] | [
[]
] | |
1pbyln | how are these kind of space images captured? | not specifically nubulae, but mostly that, i see these images a lot via /r/spaceporn and such avenues and am always fascinated by their beauty and clarity, and then i'm just puzzled. how are these pictures generated? _URL_0_ | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1pbyln/eli5how_are_these_kind_of_space_images_captured/ | {
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"score": [
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6,
4,
2,
2,
2
],
"text": [
"With the Hubbel telescope.\nA lot of those images are slightly photo-shopped. They don't actually look like that. (has to do with shifti... | [] | [
"http://i.imgur.com/H3ytm9V.jpg"
] | [
[],
[],
[
"http://www.astronomycast.com/2013/10/episode-317-observatories/"
],
[
"http://hubblesite.org/gallery/behind_the_pictures/meaning_of_color/"
],
[
"http://www.spacetelescope.org/projects/fits_liberator/fitsimages/dean_salman_3/"
],
[]
] | |
kadex | why proper emulation of older systems is still hard on new computers | Older systems such as PS2. Not *really* old, but old enough that I don't know why new computers have trouble emulating it. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/kadex/eli5_why_proper_emulation_of_older_systems_is/ | {
"a_id": [
"c2ioq6f",
"c2iroqt",
"c2ioq6f",
"c2iroqt"
],
"score": [
2,
2,
2,
2
],
"text": [
"Honey, let's take a break from the games and eat your peas. \n\nAlso: difference of dedicated processors v. multi-tasking within an already high-functioning OS. ",
"Emulators (... | [] | [] | [
[],
[],
[],
[]
] | |
skn4g | Any help would be appreciated
concerning history from 1800 - present | **UPDATE:** So I ended up getting an A on the paper and an A on the course! Thanks to everyone on here for all the help, it was really appreciated. My paper ended up taking on a life of its own and focused on the United States view on propaganda and how it changed as our enemy shifted from the nationalist Nazi party to... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/skn4g/any_help_would_be_appreciated_concerning_history/ | {
"a_id": [
"c4ese7x",
"c4esp2u",
"c4esxlc"
],
"score": [
6,
2,
3
],
"text": [
"1) Science does not conflict with religion, many prominent early scientists were quite religious. Believing in a God in no way hinders your abilities to make advances in science. Anyone who tells you ot... | [] | [] | [
[],
[],
[
"http://law2.umkc.edu/faculty/projects/ftrials/scopes/scopes2.htm"
]
] | |
uupmr | Why are there mushrooms growing in a trail in my back yard? | I'm used to seeing mushrooms occasionally pop-up in the yard, but I look out my back window and see them growing in an almost perfect trail.
_URL_0_
Why?
| askscience | http://www.reddit.com/r/askscience/comments/uupmr/why_are_there_mushrooms_growing_in_a_trail_in_my/ | {
"a_id": [
"c4ypv45"
],
"score": [
9
],
"text": [
"Cool picture!\n\nMushrooms are the fruiting bodies of fungal mycelium.\n\n _URL_0_\n\nThe threadlike mycelium is growing under the ground there in the shape of that line. If I had to guess why, I would say they are associated with a tree root th... | [] | [
"http://i.imgur.com/S5jzh.jpg"
] | [
[
"http://en.wikipedia.org/wiki/Mycelium",
"http://en.wikipedia.org/wiki/Fairy_ring"
]
] | |
179rhb | How realistic is widespread nuclear energy? Does the Earth have enough uranium deposits to provide power long term? | askscience | http://www.reddit.com/r/askscience/comments/179rhb/how_realistic_is_widespread_nuclear_energy_does/ | {
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"c83iotx",
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"score": [
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4,
2,
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],
"text": [
"I'm hoping someone with more concise data comes in to add numerical content, as I don't have a lot of my data/notes available at work.\n\nFrom a qualitative perspective, it depend... | [] | [] | [
[],
[
"http://www.iaea.org/newscenter/news/2006/uranium_resources.html"
],
[
"http://en.wikipedia.org/wiki/Breeder_reactor#Fuel_Efficiency_of_Breeder_Reactors"
],
[
"http://mitei.mit.edu/publications/reports-studies/future-nuclear-fuel-cycle"
]
] | ||
9awld1 | i dont understand spacetime and its relevance with gravity, eli5 please... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9awld1/eli5_i_dont_understand_spacetime_and_its/ | {
"a_id": [
"e4ynv9w"
],
"score": [
8
],
"text": [
"To understand the answer to this question, we first have to understand what curved spacetime is, and how it relates to falling objects. \n\nSpacetime is a four dimensional object. Three of these dimensions are spatial, and one is temporal. In cla... | [] | [] | [
[
"https://upload.wikimedia.org/wikipedia/commons/6/6a/Spherical_triangle.svg",
"https://en.wikipedia.org/wiki/Geodesic",
"http://pi.math.cornell.edu/~dwh/books/eg99/Ch06/3776c40d.jpg",
"https://en.wikipedia.org/wiki/Geodesic_deviation"
]
] | ||
obi2l | How close are we to being able to create a video game that interfaces directly with the brain? | askscience | http://www.reddit.com/r/askscience/comments/obi2l/how_close_are_we_to_being_able_to_create_a_video/ | {
"a_id": [
"c3fxs91"
],
"score": [
2
],
"text": [
"Surgeons are capable of implanting electrodes directly into the brain that react when that area of the brain is activated (i.e. when the person has a specific thought), providing a direct form of Brain-Computer Input. One problem with this method... | [] | [] | [
[]
] | ||
5m76rw | is there a non-cynical explanation for rich people running for office? or interested at all in cabinet positions and politics in general? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5m76rw/eli5_is_there_a_noncynical_explanation_for_rich/ | {
"a_id": [
"dc1a72g",
"dc1a7ho",
"dc1hpt4"
],
"score": [
6,
4,
2
],
"text": [
"It's pretty simple: Running a campaign costs money. People who have lots of money don't have to go to work to get their paycheck. They can devote 100% of their time and energy to campaigning. They c... | [] | [] | [
[],
[],
[]
] | ||
4mm0m5 | When the Greeks fought the Romans, did they use short 6' spears or long 22' ones? | When the Greeks fought the Romans, were they still fighting with the older 6’ long(ish) Hoplite spears, or were the Greeks then using the Macedonian-”Alexander the Great” style of 22’ long spears (sarissa)? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4mm0m5/when_the_greeks_fought_the_romans_did_they_use/ | {
"a_id": [
"d3x2nev"
],
"score": [
4
],
"text": [
"The short answer is both. The longer answer is far more complex.\n\n'The Greeks' were not a monolithic entity. Nor was their military innovation static in the 300-odd years during which Rome fought with cities and nations that laid claim to Greek... | [] | [] | [
[]
] | |
1nceu9 | what's the behind the meaning of a "neckbeard"? | Can someone please explain what a neckbeard is? Why do they wear fedoras? Why the "le" in front of words? Is it an insult? I'm still pretty new to this and a bit lost? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1nceu9/eli5_whats_the_behind_the_meaning_of_a_neckbeard/ | {
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14,
5,
24,
3,
2
],
"text": [
"Neckbeard refers to someone who has grown a beard but its really only on their neck. Its fairly common among nerd / geeks. \n\nThe term has become a derogat... | [] | [] | [
[],
[],
[],
[],
[]
] | |
21pwh0 | why is an earthquake- warning system valuable when it only gives a warning a few seconds prior to the actual earthquake, at best? | Reading about the 5.1 earthquake in LA, they say the new earthquake warning system was very successful with a warning given out 4 seconds before it happened. Why is this a success when we can't do anything in those 4 seconds to minimize the damage? I'm genuinely curious. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/21pwh0/eli5_why_is_an_earthquake_warning_system_valuable/ | {
"a_id": [
"cgfdlje"
],
"score": [
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],
"text": [
"The way I'm reading the articles is that the warning system itself was successful (as a prototype), and that 4 seconds is an indicator that they might be able to get more in the future (30 or 40 seconds) -- not that the 4 seconds was a successful... | [] | [] | [
[]
] | |
q6s7c | what does franchise tagging mean in the nfl? | I hear all the time teams will use the franchise tag on a player, but I don't really think I understand it. Can someone help me out? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/q6s7c/eli5_what_does_franchise_tagging_mean_in_the_nfl/ | {
"a_id": [
"c3v74vi"
],
"score": [
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],
"text": [
"When a player completes the last year of his contract, he becomes a free agent and is allowed to entertain offers from any team in the NFL with one exception. The team that previously employed him has the option of employing the \"franchise tag\... | [] | [] | [
[
"http://bleacherreport.com/articles/1071978-2012-nfl-free-agents-mario-williams-and-players-not-worth-the-franchise-tag"
]
] | |
9aiina | why can people hold their breath for a relatively long amount of time, but feel out of breath after a few seconds of chugging water? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9aiina/eli5_why_can_people_hold_their_breath_for_a/ | {
"a_id": [
"e4vocae"
],
"score": [
2
],
"text": [
"I’m sure it has something to do with how our brains react to different situations. If someone were to try to inhale water while in a pool, it would be extremely difficult because our brains know that it isn’t the right action to take."
]
} | [] | [] | [
[]
] | ||
6g9h8g | since reusable rockets can reduce the costs, why nasa never had the interest or investment like spacex ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6g9h8g/eli5_since_reusable_rockets_can_reduce_the_costs/ | {
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"score": [
5,
2,
3,
2
],
"text": [
"NASA was hugely interested in it. The Space Shuttle was a completely reusable rocket powered spacecraft. It brought back and reused the engines, the most expensive part of the lau... | [] | [] | [
[],
[
"https://spaceflightnow.com/2017/03/18/spacex-nabs-gps-launch-contract-as-air-force-opens-more-missions-for-bidding/"
],
[],
[]
] | ||
p34k9 | If it takes a few minutes for your brain to die without oxygen, why do people lose consciousness and die almost instantly when shot/stabbed through the heart? | I'm just going on what we all see in movies and TV shows. You know: someone gets shot/stabbed through the heart, and they drop to the ground instantly, dead.
If your heart's job is to pump oxygenated blood to the rest of your body, and it's your brain controls consciousness, why wouldn't we see people still conscious... | askscience | http://www.reddit.com/r/askscience/comments/p34k9/if_it_takes_a_few_minutes_for_your_brain_to_die/ | {
"a_id": [
"c3m47en",
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"c3m5yw3",
"c3m67yr",
"c3m8d5a"
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"score": [
33,
21,
6,
16,
2
],
"text": [
" > Physiologically, a determined adversary can be stopped reliably and immediately only by a shot that disrupts the brain or upper spinal cord. Failing a h... | [] | [] | [
[
"http://www.thegunzone.com/quantico-wounding.html"
],
[],
[
"http://en.wikipedia.org/wiki/Hydrostatic_shock"
],
[
"http://www.reddit.com/r/todayilearned/comments/o7hwu/til_that_after_being_beheaded_you_remain/"
],
[]
] | |
8bvsu3 | how does gas-x work? | And let’s be adults about farts. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8bvsu3/eli5_how_does_gasx_work/ | {
"a_id": [
"e0eyxnh",
"dxa3wrm"
],
"score": [
2,
2
],
"text": [
"The active ingredient in Gas\\-X is Simethicone. This compound acts by making small bubbles of gas combine to form larger ones which are passed more easily.",
"Gas and bloating is caused by large air bubbles inside your ... | [] | [] | [
[],
[]
] | |
3dh8ku | why did us congress pass a law to ensure all helium in the us national helium reserve is sold by 2015? what benefit does this have? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3dh8ku/eli5_why_did_us_congress_pass_a_law_to_ensure_all/ | {
"a_id": [
"ct55kyh"
],
"score": [
10
],
"text": [
"In 1995 We had gathered a stockpile of over 1 billion cubic meters but had also racked up a debt of $1.4 billion doing so. The law was not to sell off all stockpiles, it was to start selling off the stockpile until that debt was covered. It was ... | [] | [] | [
[]
] | ||
g9gjf | Is there any portion of your field that is limited by mathematics? | During a discussion with a friend over the weekend, the proposition arose that scientific and technological progress is largely limited by mathematics. The transistor relies on quantum mechanics, which couldn't exist without mathematics, general relativity calls for mathematics beyond the undergraduate level, even biol... | askscience | http://www.reddit.com/r/askscience/comments/g9gjf/is_there_any_portion_of_your_field_that_is/ | {
"a_id": [
"c1lws30",
"c1lx90s"
],
"score": [
3,
3
],
"text": [
"Oh see I find we have the exact *opposite* problem right now. We have so many different choices for the math, and we don't have the data to know which one is correct. ",
"Progress in physics is mostly limited by our unde... | [] | [] | [
[],
[]
] | |
25g2qi | How was the American civil rights movement covered in the media of apartheid era South Africa? | I guess I'm specifically interested in the newspapers of the time, and textbooks in the years after. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/25g2qi/how_was_the_american_civil_rights_movement/ | {
"a_id": [
"chhgae0"
],
"score": [
22
],
"text": [
"I'm afraid I can't offer specific information on headlines relating to major events, but I do know a little regarding the general social attitude, which was reflected in the media discourse of the conservative white newspapers.\n\nI'm basing mos... | [] | [] | [
[]
] | |
r5h6f | Is it possible to view the moon landing sites through a powerful enough telescope? | And if so, what can we make out? Can we see the lander? The buggy? I doubt we could make out the flag, though. | askscience | http://www.reddit.com/r/askscience/comments/r5h6f/is_it_possible_to_view_the_moon_landing_sites/ | {
"a_id": [
"c432d6j",
"c432zpt"
],
"score": [
5,
3
],
"text": [
"[This](_URL_0_) is about as much detail as we have so far....will we ever make a powerful enough telescope to see this? maybe..who knows. \n \nThe problem is that the objects are quite small, and the moon is a *long* way a... | [] | [] | [
[
"http://www.istad.org/squidoo/moon-landing-photos/photo-of-lunar-lander.jpg"
],
[
"http://www.reddit.com/r/askscience/comments/qy8ae/why_havent_we_aimed_a_telescope_at_the_moon_to/"
]
] | |
yuyqk | I just read up on the Russian Sleep Experiment and the Milgram Experiment. Can anybody give me a list of similar experiments i can research? | askscience | http://www.reddit.com/r/askscience/comments/yuyqk/i_just_read_up_on_the_russian_sleep_experiment/ | {
"a_id": [
"c5z1lwq",
"c5z1mb2"
],
"score": [
6,
2
],
"text": [
"The Russian Sleep experiment isn't a real thing. It's a work of fiction.",
"Is there a russian sleep experiment that's not the weird creepypasta I'm thinking of? "
]
} | [] | [] | [
[],
[]
] | ||
f8pc48 | why does water on the horizon look as if it is above ground level when it is flat? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f8pc48/eli5_why_does_water_on_the_horizon_look_as_if_it/ | {
"a_id": [
"fimrmzw",
"fimsnza",
"fin8baz"
],
"score": [
17,
4,
2
],
"text": [
"You're not used to seeing such an uninterrupted expanse (to the horizon). \n\nThe water lays at eye level, essentially.\n\nA flat desert would look the same.",
"Check out what a [Fata Morgana](_URL... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=maLRhoceeuc",
"https://www.wired.com/2015/01/fantastically-wrong-fata-morgana/"
],
[]
] | ||
dctj31 | how does a computer program arrange transistors to run a program? in other words, if transistors are so small, how can a computer ever know how to create the circuit required to run a program? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dctj31/eli5_how_does_a_computer_program_arrange/ | {
"a_id": [
"f2b3py7",
"f2b3xkt",
"f2bkokh"
],
"score": [
10,
4,
3
],
"text": [
"A computer does not \"arrange transistors\". They aren't moved around to form circuits to run programs, they already are in the required configuration within the CPU. The CPU is manufactured that way w... | [] | [] | [
[],
[],
[]
] | ||
fna37b | Why is it that the Gothic religion of Arianism died out as opposed to the more Roman-Orthodox sects of Christianity? | The Goths controlled Western Europe at the time, so it would be easier to assume that the religion of the populous would adapt and assimilate to the religion of their rulers and those who subjugated them. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/fna37b/why_is_it_that_the_gothic_religion_of_arianism/ | {
"a_id": [
"fl9evhi"
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"score": [
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"text": [
"There's certainly more to be said, but you might [ find elements of answer ](_URL_1_) in t[hese posts](_URL_0_)\n\nBasically, \"Arianism\" ( a pejorative name for Homoian creed, identifying it with actual Arianism) was a creation of the imperial ... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/cqvh3l/why_did_clovis_i_convert_to_catholicism_instead/",
"https://www.reddit.com/r/AskHistorians/comments/e0dytb/practical_application_of_arian_christianity/"
]
] | |
86j3ib | What are reliable sources of information on the Scandinavian invasion of the Anglo-Saxon England and their presence there from 793 till 1066? | I'm writing a work on linguistic changes that Old Norse brought into English during this period, but I'd like to start with a semi-indepth historical overview.
Any go to books?
thank you! | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/86j3ib/what_are_reliable_sources_of_information_on_the/ | {
"a_id": [
"dw5glhn"
],
"score": [
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"text": [
"Your go-to primary sources are *The Anglo-Saxon Chronicle* and Asser's *Vita Ælfredi*. Exercise standard cautions. It's also worth looking through William of Malmesbury.\n\nYour standard work is Stenton's perennial *Anglo-Saxon England*. There's ... | [] | [] | [
[]
] | |
4k0z5b | how does so much oil exist on earth? | There are literally hundreds of millions of people who drive some sort of vehicle in the US alone. How the hell can all these people use up 10s of thousands of gallons of gasoline in their lifetime without fear of Earth ever being depleted of it.
That's not even going into all the other uses for crude oil, which in th... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4k0z5b/eli5_how_does_so_much_oil_exist_on_earth/ | {
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"The oil was formed over literally millions of years.\n\nAnd we *are* using it up. At current consumption rates it could be gone in wel... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
659klt | Does antimatter reflect photons? | If we could somehow make enough antimatter, could we see it? | askscience | https://www.reddit.com/r/askscience/comments/659klt/does_antimatter_reflect_photons/ | {
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"text": [
"The electromagnetic force (which is mediated by photons) does not distinguish between matter and antimatter. In other words, the electromagnetic force has [charge conjugation sy... | [] | [] | [
[
"https://en.wikipedia.org/wiki/C-symmetry"
],
[
"https://home.cern/about/updates/2016/12/alpha-observes-light-spectrum-antimatter-first-time"
],
[],
[]
] | |
sbsuc | Are there examples of cultures and acculturation in nature outside of the homo genus? | By this, I'm asking if there are single species which contain groups or "cultures" that exhibit different sets of learned traits from another culture. | askscience | http://www.reddit.com/r/askscience/comments/sbsuc/are_there_examples_of_cultures_and_acculturation/ | {
"a_id": [
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"score": [
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"text": [
"Cultures have been described in many primate species and aspects of cultures in other [animals as well](_URL_1_). For instance, in chimps and other primates certain groups use certain types of tools in very specific ways. One individual comes up ... | [] | [] | [
[
"http://www.emory.edu/LIVING_LINKS/hcg.html",
"http://en.wikipedia.org/wiki/Animal_culture",
"http://www.jstor.org/discover/10.2307/223373?uid=3739392&uid=2129&uid=2&uid=70&uid=3737720&uid=4&sid=56043254253",
"http://lessonsforhope.org/pdf/chimp_cultures.pdf",
"http://e... | |
xsp83 | time (before you downvote, please look) | People say time didnt exist before, or what it now is, but: Isnt Time something we have made up? human beings, there is no "Time" that "Time" doesnt exist. For Earth it spins and rotates around the sun, where we have "time" that we have made. So isnt "time" something we as human beings have made up to "control" earth. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/xsp83/eli5_time_before_you_downvote_please_look/ | {
"a_id": [
"c5p8br9",
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"score": [
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],
"text": [
"No. Time passed before humans / earth existed. Matter collecting into planets takes *time*.",
"Time is what separates two events in the same space. It is no more a made-up concept than distance is."
]
} | [] | [] | [
[],
[]
] | |
2d0mnq | What was pre-Christian Slavic society like? | It seems like we have an okay idea of the Slavic pagan religion, but do we have any idea what was society actually like during this time period for the people living during it? Was society really as barbaric and violent as people popularly see the pagans of ancient Northern Europe? Would the lives of the common people ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2d0mnq/what_was_prechristian_slavic_society_like/ | {
"a_id": [
"cjl5xg9",
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"score": [
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3,
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],
"text": [
"The facts are is that we know very little about pre-Christianity Slavs. What little we do know is from Christian sources and, sadly, they're very biased against the Slavs. However, it's highly unlikely ... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Burdei"
]
] | |
2b30p1 | how can it take more than 5 minutes for an airline to know exactly who was on a plane that went down? | I'm Dutch and following the news about MH17, and so far today the number of Dutch casualties has been updated at least twice.
We all get our passports scanned at Schiphol when we check in and when we board - how can it take over 24 hours to know exactly who was on board? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2b30p1/eli5_how_can_it_take_more_than_5_minutes_for_an/ | {
"a_id": [
"cj1dq94"
],
"score": [
2
],
"text": [
"Another point I haven't seen is that families are contacted first and unfortunate verification that the person in particular was on this flight would probably get verified in this manner. It's a time consuming process."
]
} | [] | [] | [
[]
] | |
zkmzw | In the winter, if your door is open, do you let the heat out or the cold in? | askscience | http://www.reddit.com/r/askscience/comments/zkmzw/in_the_winter_if_your_door_is_open_do_you_let_the/ | {
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"score": [
2,
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4
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"text": [
"You mix cold air into your house, and warm air out into the world, unless there is a significant pressure differential between the two. (Hint: There is not.) \n\nThe net flux of energy is out of the hou... | [] | [] | [
[],
[],
[]
] | ||
7rjwqg | why does sand stick to everything even though it doesn't feel sticky? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7rjwqg/eli5_why_does_sand_stick_to_everything_even/ | {
"a_id": [
"dsxjxed"
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"score": [
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"text": [
"Sand sticks to things in many ways just like flour does. Flour particles aren't sticky at all (while dry), but small enough to be caught in tangles of fabric fibers, attracted by even the slightest charges, or \"grabbed\" by microscopic droplets... | [] | [] | [
[]
] | ||
9cpg0m | How do USB power adapters convert power from outlets to that usable for our phones? | I understand the concept of a transformer which are able to step-up/step-down voltages, but looking into power adapters there are "flyback transformers" and "rectifiers" which confuse me on what they are and the reason for their necessity. | askscience | https://www.reddit.com/r/askscience/comments/9cpg0m/how_do_usb_power_adapters_convert_power_from/ | {
"a_id": [
"e5cijvd"
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"score": [
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"text": [
"A power adapter is more than a transformer and rectifier. It first rectifies the AC into 170 or 340VDC (depending on whether you have 120 or 240 VAC service). Then a transistor switches the DC at around 100kHz and that is applied to a transforme... | [] | [] | [
[]
] | |
9hltc6 | what makes a dry martini "dry?" | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9hltc6/eli5_what_makes_a_dry_martini_dry/ | {
"a_id": [
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"score": [
3,
4
],
"text": [
"The use of dry vermouth. Vermouth is a type of fortified wine that comes in sweet and dry varieties.",
"There are two kinds of vermouth, sweet and dry. Sweet is red, dry is clear. A martini is made with gin or vodka and ... | [] | [] | [
[],
[]
] | ||
7obgct | how is energy from renewable sources, like wind or solar, stored? | I'm all for green energy but it seems to me like there's a serious problem with depending entirely on renewable energy sources. The weather is variable and unpredictable, so is the demand for energy.
For example, There's less sun in the winter but the demand for energy is higher. How is the surplus energy produced du... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7obgct/eli5_how_is_energy_from_renewable_sources_like/ | {
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2,
2,
2
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"text": [
"Tha... | [] | [] | [
[],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity"
],
[],
[],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity"
],
[]
] | |
1epfwy | quantum superposition | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1epfwy/eli5_quantum_superposition/ | {
"a_id": [
"ca2gxco"
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"score": [
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"text": [
"In a normal situation, things that you measure have that value before you try to measure them. You are in your parking lot before you look it up on GPS. You are moving 55 MPH before the cop radar blasts you. If you try to measure the speed or loc... | [] | [] | [
[]
] | ||
4v2dsp | From what I understand, epic poems (Homer etc) were recited aloud from memory. Were there specific techniques the ancients used to memorise long passages? | Follow up questions:
Did humans have better memories "back in the day"?
My parents generation was forced to memorise long passages during school (Shakespeare etc)... are the techniques they used similar to the ones the ancients would have used?
Are the script memorisation techniques used by actors today similar to wh... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4v2dsp/from_what_i_understand_epic_poems_homer_etc_were/ | {
"a_id": [
"d5uubc0"
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"score": [
7
],
"text": [
"Memory is pliable. Training in mnemonic techniques can be used to improve memory. The military academies require multiple things to be memorized at all times to enhance memory improvement.\n\nEpic poems weren't recited word-for-word every time,... | [] | [] | [
[]
] | |
uhhhv | Russian Historians, any idea as to the context of this picture? | [The picture in question](_URL_0_)
I posted this picture over on /r/wallpapers and somebody asked me where this was and I got curious. I am definitely no expert, so after 45 minutes of searching the web, [this was all I got.](_URL_1_) However, I could be completely wrong and so Im really curious as to what the circums... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/uhhhv/russian_historians_any_idea_as_to_the_context_of/ | {
"a_id": [
"c4vf049"
],
"score": [
4
],
"text": [
" > Its a photograph entitled \"Viktor Bulla's Pioneers in Defense Drill, Leningrad (1937)\" \n\n > It appears on page 79 of a book of photographs called \"Propaganda and Dreams\" by Leah Bendavid-Val.\n\nFound [here](_URL_0_)."
]
} | [] | [
"http://imgur.com/Plts7",
"http://www.reddit.com/r/wallpaper/comments/u7zpg/the_town_full_of_masked_people_2208x1566/c4u8j7d"
] | [
[
"http://vine.rottentomatoes.com/vine/printthread.php?t=590295"
]
] | |
rw3g1 | Does one strand of DNA contain more genetic information than the other? | Here is my very simple model of a DNA strand.
Strand A: 5' -[gene]-------------[gene]------ --[gene]-----------3'
Strand B: 3'-----------[eneg]-----------[eneg]-------------------5'
I know that the two strands contain very different genetic information due to the anti-parallel nature of DNA.
My question is this: ... | askscience | http://www.reddit.com/r/askscience/comments/rw3g1/does_one_strand_of_dna_contain_more_genetic/ | {
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"c494wtu",
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"score": [
2,
3,
2
],
"text": [
"Actually, the two strands are completely redundant; they contain exactly the same information, and each strand is a template of the other. This is what makes DNA replication work. \n \nThe different gen... | [] | [] | [
[],
[],
[]
] | |
110kky | Is there an opposite to clinical depression, a sort of "chronic happiness" or something like that? | I know that clinical depression and similar emotional disorders are caused by the imbalance of mood-governing chemicals in the brain. But is there a disorder where someone feels perpetually happy and cheerful, even when they shouldn't be? I know that sounds really weird, but I'm honestly curious. If there are disorders... | askscience | http://www.reddit.com/r/askscience/comments/110kky/is_there_an_opposite_to_clinical_depression_a/ | {
"a_id": [
"c6i8jgx",
"c6if4r4",
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"score": [
38,
5,
3
],
"text": [
"To be classified as disorder, the condition must have negative effects to the person, his ability to to function, or to his environment. Mania is in some sense opposite of depression, but it comes in ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Hypomania"
],
[],
[
"http://www.youtube.com/watch?v=sOCJT2T8Rr4",
"http://en.wikipedia.org/wiki/Pseudobulbar_affect"
]
] | |
1zzslm | Why do temperatures seem more extreme when we first wake up? | For example: when I first wake up I'm really cold and have to curl up in blankets, but the temperature is the same as when I went to sleep and was comfortable.
Another example: When you get out of the shower in the morning you're freezing, but when you get out later in the day it seems less cold. | askscience | http://www.reddit.com/r/askscience/comments/1zzslm/why_do_temperatures_seem_more_extreme_when_we/ | {
"a_id": [
"cfylwbt"
],
"score": [
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"text": [
"Possibly because temperatures *are* more extreme early in the morning? \n\nThe side of the earth which faces away from the sun cools as much of the day's heat is radiated away into space. This is particularly true on cloudless nights. \n\nFrom a ... | [] | [] | [
[]
] | |
9v5s56 | im british and ive always heard jeff sessions's name bought up negativly...why are people protesting/ angry that he has been fired? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9v5s56/eli5_im_british_and_ive_always_heard_jeff/ | {
"a_id": [
"e99ljyi",
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"score": [
7,
6
],
"text": [
"He recused himself from the investigation into Russians tampering with the 2016 election favoring Donald Trump. Meaning the investigation into Trump’s possible collusion with Russia and obstruction of Justice was being done ... | [] | [] | [
[],
[]
] | ||
1rfweb | why don't our lungs clog from all the tiny things we inhale? | Simply, why can we still breathe when there's dust, pollen, smoke, mite in the sheets or whatever around? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1rfweb/eli5_why_dont_our_lungs_clog_from_all_the_tiny/ | {
"a_id": [
"cdmx9ef"
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"score": [
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"text": [
"In addition to the lung clearance provided by the ciliae there are tiny cells in the alveoli wall (the tiny bubbles the lung tissue is made out of) called macrophages whose task it is to basically \"eat\" rubbish and get rid of any foreign bodies... | [] | [] | [
[]
] | |
mqgff | Why are humans still susceptible to superstitions? | Is there some sort of evolutionary or psychological reasoning behind it? | askscience | http://www.reddit.com/r/askscience/comments/mqgff/why_are_humans_still_susceptible_to_superstitions/ | {
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"score": [
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"text": [
"Because believing in a superstition does not p... | [] | [] | [
[],
[],
[],
[
"http://en.wikipedia.org/wiki/B._F._Skinner#Superstition_in_the_pigeon",
"http://psychclassics.yorku.ca/Skinner/Pigeon/"
],
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/B._F._Skinner#Superstition_in_the_pigeon",
"http://psychclassics.yorku.ca/Skinner/Pigeon/"
],
... | |
16mh5y | Why isn't spiciness a basic taste? | Per this [Wikipedia article](_URL_0_) and the guy explaining about wine and food pairing, spiciness is apparently not a basic taste but something called "umami" is. How did these come about? | askscience | http://www.reddit.com/r/askscience/comments/16mh5y/why_isnt_spiciness_a_basic_taste/ | {
"a_id": [
"c7xddws",
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5
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"text": [
"Spiciness, as in what you \"taste\" in peppers, is not a taste. It's actually a reaction between [capsaicin](_URL_1_) and the [trigeminal nerve](_URL_0_). Similarly, it's why you wouldn't call \"minty\" a basic flavor -- si... | [] | [
"http://en.wikipedia.org/wiki/Taste#Basic_tastes"
] | [
[
"http://en.wikipedia.org/wiki/Trigeminal_nerve",
"http://en.wikipedia.org/wiki/Capsaicin",
"http://www.reddit.com/r/askscience/comments/16mh5y/why_isnt_spiciness_a_basic_taste/c7xfkb6"
],
[]
] | |
1gll1f | If I donate blood while under the influence of some substance, will the receiver of said blood experience the effects of that substance? | askscience | http://www.reddit.com/r/askscience/comments/1gll1f/if_i_donate_blood_while_under_the_influence_of/ | {
"a_id": [
"caldz2w"
],
"score": [
4
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"text": [
"They test blood for things such as this, they don't just take the blood right from you and give it to others without checking it first.\n\nNow if you're asking whether they would hypothetically experience it, that would depend on how much blood o... | [] | [] | [
[]
] | ||
4nczbw | why does putting sugar on some things make it taste sour? | Like when you buy the sour gummy worms or sour Skittles it is coated in sugar and that makes it taste sour. Would it not make it taste even sweeter. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4nczbw/eli5_why_does_putting_sugar_on_some_things_make/ | {
"a_id": [
"d432a0k"
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"score": [
5
],
"text": [
"I'm pretty sure the coating is a mixture of sugar and citric acid. Citric acid is the main chemical that makes citrus fruits taste sour."
]
} | [] | [] | [
[]
] | |
19vdhe | Could a cannibal contract AIDS from eating an AIDS infected person? | This topic came up through a conversation somehow, but since HIV/AIDS is contracted through contact with bodily fluids such as blood, could a person contract HIV/AIDS from eating a person with HIV/AIDS. | askscience | http://www.reddit.com/r/askscience/comments/19vdhe/could_a_cannibal_contract_aids_from_eating_an/ | {
"a_id": [
"c8rmy5l",
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"score": [
6,
5
],
"text": [
"It's possible. The acids of the stomach would probably destroy the HIV virus, but if the cannibal has any sort of small cut or opening anywhere in their mouth or digestive tract and infected blood comes into contact with thi... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/History_of_HIV/AIDS#Bushmeat_practice"
]
] | |
1yp519 | the difference between coke zero and diet coke, surely you only need the one product? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1yp519/eli5_the_difference_between_coke_zero_and_diet/ | {
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"cfmk2ll",
"cfmk8s7",
"cfmke6e",
"cfmkkzs",
"cfmkskh",
"cfml10w",
"c... | [] | [] | [
[],
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"http://foodwatch.com.au/blog/additives-and-labels/item/q-what-s-the-difference-between-diet-coke-and-coke-zero.html#ixzz2u9SCInAN"
],
[],
[
"http://www.ted.com/talks/malcolm_gladwell_on_spaghetti_sauce.html"
],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
... | ||
2g59rd | how does gorilla glass work? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2g59rd/eli5_how_does_gorilla_glass_work/ | {
"a_id": [
"ckfr5d2"
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"score": [
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"text": [
"It is done using using the ion exchange process:\n\n\"Ion exchange is a chemical strengthening process where large ions are “stuffed” into the glass surface, creating a state of compression. Gorilla Glass is specially designed to maximize this be... | [] | [] | [
[]
] | ||
7c8rww | Why did Egypt's Old Kingdom fall? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7c8rww/why_did_egypts_old_kingdom_fall/ | {
"a_id": [
"dpo7iy6"
],
"score": [
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"text": [
"I couldn't find another thread that explains this, which surprised me, but here is another discussion of the Old Kingdom by u/mp96 which gives some background such that I can skip over some basics: _URL_0_\n\nTo begin with, know that the ending/... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/27r5c8/how_do_we_know_that_the_egyptian_old_kingdom/"
]
] | ||
4p6swh | stock grants | I'm probably going to need an explain like I'm 3 explaination.
I get stock grants from my company each year, I currently have 116 shares vested. The last price shown was $42.92.
What I can't seem to grasp for some reason is how taxes are handled when I choose to sell. I was told that my vested stocks are what was l... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4p6swh/eli5_stock_grants/ | {
"a_id": [
"d4ij0hs"
],
"score": [
2
],
"text": [
"If you choose to sell your stock, you will sell it at whatever price you get, and be taxed on that.\n\nFor stocks in the US you will be taxed at the capital gains tax rate. You are not taxed until you sell, because until you sell your stock, the ... | [] | [] | [
[]
] | |
1is7qu | What happens to the probes that land on Venus? | I understand that the pressure on Venus destroys the probes that have landed, but what exactly happens? Is it as if a rock lands on top of it and it just flattens or does it crumple as if it's a piece of paper? I've never understood what exactly happens.
Bonus question, do we have the current technology to develop a p... | askscience | http://www.reddit.com/r/askscience/comments/1is7qu/what_happens_to_the_probes_that_land_on_venus/ | {
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"In addition the the crushing pressure, the surface of Venus is *very* hot. A lot of materials will be significantly less-strong at 450 degrees C. \n\nAtmospheric pressure is essentially the same in every direction, so the pr... | [] | [] | [
[],
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"http://en.wikipedia.org/wiki/Observations_and_explorations_of_Venus",
"http://en.wikipedia.org/wiki/Venera_10#Lander",
"http://www.youtube.com/watch?v=Zz95_VvTxZM"
]
] | |
2p65ts | if people are born in palestinian territories what citizenship do they have? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2p65ts/eli5_if_people_are_born_in_palestinian/ | {
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"_URL_0_\n\nPeople born to Palestinian parents get a Palestinian ID card with the approval of the Israeli government. They are Palestinian citizens, even if it technically means they are stateless (since Palestine is not an ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Israeli_identity_card#ID_card_casing_and_variations"
],
[]
] | ||
8dmiff | does juice expire and how? is it more about the taste goong bad or is it unhealthy to drink juice that has expired a few months ago? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8dmiff/eli5_does_juice_expire_and_how_is_it_more_about/ | {
"a_id": [
"dxo9raa",
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"score": [
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"text": [
"Juice can mold because of the sugar content. This would likely only occur if it was previously opened so the mold spores could enter, but nonetheless I would proceed with caution.",
"Yes, you aren't the only thing that e... | [] | [] | [
[],
[]
] | ||
3nj5jl | History of Abraham in Arabia | Hello everyone,
I was reading the Quran and in it we see multiple verses regarding Abraham.
In the Quran, Abraham and Ishmael are credited with building the Kabba and establishing Mecca.
All religious beliefs aside, I'm very curious as to what kind of historic evidence we have to back these claims up.
Thanks. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3nj5jl/history_of_abraham_in_arabia/ | {
"a_id": [
"cvp2qqb"
],
"score": [
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"text": [
"Hello,\n\nAs of this time, we have no archaeological or extrabiblical evidence that mentions Abraham, Ishmael, or Isaac. We haven't found any texts from Mesopotamia or Egypt that mention him, we haven't found his tomb, and writing was not preval... | [] | [] | [
[]
] | |
xsk35 | Does the Oberth Effect actually increase the delta v of the burn or does it just mean an equal delta v performed at high velocity has a larger affect on the orbit? | The wiki doesn't really make this clear | askscience | http://www.reddit.com/r/askscience/comments/xsk35/does_the_oberth_effect_actually_increase_the/ | {
"a_id": [
"c5p7o9l"
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"score": [
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"text": [
"It actually increases the delta v of the rocket. To an observer on the rocket, the fuel is always leaving the rocket at the same speed. This means that to an observer who is stationary with respect to the frame the rocket is flying in, that the f... | [] | [] | [
[]
] | |
pyikc | why is the price of gas so much more fluid than any other good we purchase? | What makes the price of gas jump up and down so often but any other product we buy inflates at a slower rate.
All basic materials and goods (sugar, coffee, corn, soy, beef, etc) are traded on commodities markets, but starbucks doesn't increase and decrease the cost of a coffee by a few cents each week. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/pyikc/eli5_why_is_the_price_of_gas_so_much_more_fluid/ | {
"a_id": [
"c3t9085"
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"score": [
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"text": [
"It changes often because the profit on gasoline is so thin and there is no way to spread that out. Most of the stations are franchised or lease the right to the brand name. That means that the station owner will lose money if the cost of the new... | [] | [] | [
[]
] | |
2wmou5 | how did mit become internationally renowned compared to other state technical colleges and universities? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2wmou5/eli5_how_did_mit_become_internationally_renowned/ | {
"a_id": [
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"text": [
"MIT isn't a state school, it is private. So like Harvard they can be selective which allows them to cultivate a reputation for excellence. ",
"First off, MIT is private.\n\nThe school was founded with a idea in mind ... | [] | [] | [
[],
[]
] | ||
3u8yku | Would an instrument sound different in gravity that is different than Earth's gravity? | askscience | https://www.reddit.com/r/askscience/comments/3u8yku/would_an_instrument_sound_different_in_gravity/ | {
"a_id": [
"cxdcau8"
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"score": [
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"text": [
"Yes it would, the way we percieve sounds differs from one matter to the other. (Things sound different underwater then they do through the atmosphere). It also depends on the density of the matter. Under a significantly different gravitationnal f... | [] | [] | [
[]
] | ||
516zx4 | how does a fertilized egg develop into the different parts of a fetus so specifically? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/516zx4/eli5how_does_a_fertilized_egg_develop_into_the/ | {
"a_id": [
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"text": [
"One could literally describe details on this for pages and hours, and if you want to get into the weeds, people work on researching this information as a career. I'm pretty sure they're still not entirely sure on the details. But because of where... | [] | [] | [
[]
] | ||
31xsvv | How many workers died while building the national highway system? | Was talking to my buddy, who's an iron worker, about how much safer his and other construction industries have gotten in the last 100 years, and the national highway system came up. Neither of us could think of ever hearing a number, and both Google and searching Reddit comes up empty. Any one of you have any sources o... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/31xsvv/how_many_workers_died_while_building_the_national/ | {
"a_id": [
"cq65j6r"
],
"score": [
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"text": [
"There's no way to come up with a firm number, as the network of highways in the US was built over a period spanning centuries, by many different companies and agencies. Even if you're talking only about the Interstate System, those were built by... | [] | [] | [
[]
] | |
3n81xh | why does 'republican' mean something completely different in europe compared to what it means in the us? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3n81xh/eli5_why_does_republican_mean_something/ | {
"a_id": [
"cvlmjog",
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2,
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"text": [
"Because it is the name of the other major party of the US, so the political ideology and goals of that party greatly define what republican means in the US. In Europe on the other hand there are still a... | [] | [] | [
[],
[],
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] | ||
1if18c | Is there an understood neurological difference between imagined vision ( mind's eye ) and actual sight? | How can I see something with my visual cortex and simultaneously imagine a different image? Where in the brain does the imagined image reside if my visual cortex is occupied by having my eyes open? (I apologize for any misconceptions I probably have about the neuroscience of vision...) | askscience | http://www.reddit.com/r/askscience/comments/1if18c/is_there_an_understood_neurological_difference/ | {
"a_id": [
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16
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"text": [
"There are some recent studies that indicate that imagery seems to activate similar populations as actually seeing the object, at least in higher visual areas (e.g., [Stokes et al., 2009](_URL_2_), [Cichy et al., 2012](_URL_1_)). In both of these... | [] | [] | [
[
"http://www.mitpressjournals.org/doi/abs/10.1162/089892903770007399",
"http://cercor.oxfordjournals.org/content/22/2/372.abstract",
"http://www.jneurosci.org/content/29/5/1565.short"
]
] | |
42be28 | is phantom pain considered psychological pain or actual physical pain? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/42be28/eli5_is_phantom_pain_considered_psychological/ | {
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23,
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"text": [
"It is actual pain. It occurs at the end of the nerves where they were severed. Those ends are exposed and aren't properly \"wired\" into the body and it causes the illusion of ... | [] | [] | [
[],
[],
[],
[
"http://bio1152.nicerweb.com/Locked/media/ch49/49_16-MotorSensoryCorts-L.jpg",
"https://www.ted.com/talks/vilayanur_ramachandran_on_your_mind?language=en#t-732298"
]
] | ||
18ns07 | Is it possible to experience withdrawal symptoms off of a placebo? | If someone has been taking a placebo for awhile without their knowledge, experienced a positive reaction towards it, then was suddenly taken off of it, would the body react in any way?
To expand upon the question, would it be possible to *overdose* on said placebo?
Just curious. | askscience | http://www.reddit.com/r/askscience/comments/18ns07/is_it_possible_to_experience_withdrawal_symptoms/ | {
"a_id": [
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"score": [
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"text": [
"Asked and answered 11 days ago:\n\n_URL_0_"
]
} | [] | [] | [
[
"http://www.reddit.com/r/askscience/comments/17xbwm/is_it_at_all_possible_to_become_addicted_to_a/"
]
] | |
cn1w7e | Do male Lions hunt differently than female Lions? | askscience | https://www.reddit.com/r/askscience/comments/cn1w7e/do_male_lions_hunt_differently_than_female_lions/ | {
"a_id": [
"ew6jhad",
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2
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"text": [
"It used to be thought that male lions rarely hunted, with lionesses doing most of the work. More recently, though, it’s been shown that this is not true; it was simply a case of looking under the streetlights. Lionesses an... | [] | [] | [
[
"https://www.sciencedirect.com/science/article/pii/S0003347213000468?via%3Dihub"
],
[]
] | ||
7wo8we | Opium Dens | When people talk about old timey opium dens... What was the form/composition/whatever of what people took? Was it needles or smoke etc... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7wo8we/opium_dens/ | {
"a_id": [
"du1xsyc"
],
"score": [
6
],
"text": [
"They were smoking opium. Bootle diggers frequently find small long bottles with small openings and a long narrow interior, and they refer to these as opium bottles. They are not! These may have contained Chinese medicines, but they could not cont... | [] | [] | [
[
"https://www.amazon.com/Virginia-City-Historical-Archaeology-American/dp/0803238487",
"https://en.wikipedia.org/wiki/Opium_pipe"
]
] | |
405wnp | why is it that some of the sugar i put in my coffee dissolves, but some always seems to remain at the bottom of the mug? | As I finished my last cup of coffee for the night, I happened to glance down and realized I never really thought about this. I always put a bit of sugar into my coffee, and I know some of it dissolves because the flavor is affected. But there always seems to be a bit of sugar left over once my drink is finished. Why is... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/405wnp/eli5_why_is_it_that_some_of_the_sugar_i_put_in_my/ | {
"a_id": [
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"score": [
58,
2,
2,
10,
3
],
"text": [
"Let's look at this with the knowledge of chemistry from school that hasn't left me in the 20 years in between. \n\n* The liquid could be over saturated. Tha... | [] | [] | [
[],
[],
[],
[],
[]
] | |
6czz2t | positive, negative and ground in an electric circuit. | What are they exactly and its purpose? And electricity flows from negative to positive correct? Always? How? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6czz2t/eli5_positive_negative_and_ground_in_an_electric/ | {
"a_id": [
"dhzb9vs"
],
"score": [
2
],
"text": [
"The way a battery works is that it sets up a difference in potential energy (electric potential is *slightly* different but let's ignore that). The electrons at the negative terminal have a high potential energy, like a ball on top of a hill. The... | [] | [] | [
[]
] | |
466ib8 | why are the democrats and republicans rigorously fighting over the next successor of justice scalia? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/466ib8/eli5_why_are_the_democrats_and_republicans/ | {
"a_id": [
"d02u6rk"
],
"score": [
2
],
"text": [
"The Supreme Court has nine justices. Before Scalia's death, there were five conservative justices and four liberal justices. Scalia was one of the conservative justices. Whoever gets his old job will determine which way the balance of power is ti... | [] | [] | [
[]
] | ||
twct6 | What single event played the most pivotal role in changing human history in your area of expertise? | During your area of expertise, what event, invention, birth, death, etc. is considered the most "important" or made the most and or longest lasting change? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/twct6/what_single_event_played_the_most_pivotal_role_in/ | {
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8,
9,
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7,
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7,
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7,
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2,
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1sc2a5 | Why does Virginia have no major cities? | Virginia has to be the largest state without a major city as a metropolitan center. What is the historical reasoning for this? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1sc2a5/why_does_virginia_have_no_major_cities/ | {
"a_id": [
"cdw5o33",
"cdw5t5n",
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],
"score": [
5,
8,
2
],
"text": [
"How do you define a major City?\n\nVA Beach is one of the 50 largest.",
"For the record, Virginia is certainly not unique in this way. New Jersey has a slightly larger population but New Jersey's la... | [] | [] | [
[],
[],
[]
] | |
6cm4gi | why do containers form a vacuum when being heated in the microwave with their lid on? bowls with cling wrap do the same. | To me the air and contents inside are heating up and therefore should expand and build pressure. But after the microwave stops, the plastic container starts to collapse in. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6cm4gi/eli5_why_do_containers_form_a_vacuum_when_being/ | {
"a_id": [
"dhvopt0",
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"score": [
2,
5,
2
],
"text": [
"This depends on the design of the lid. A normal lid or plastic wrap is not able to contain much pressure but are able to contain vacuum. So when the contents of the container heats up the container will... | [] | [] | [
[],
[],
[
"http://www.cnn.com/2010/HEALTH/05/31/chemical.dangers/"
]
] | |
6dapqe | if easter is more significant than christmas, theologically speaking, then why do americans and many others make a bigger deal of christmas--for example, making christmas a federal holiday but not giving any days off for the easter weekend, as opposed to most european countries? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6dapqe/eli5_if_easter_is_more_significant_than_christmas/ | {
"a_id": [
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"score": [
2,
12,
11,
4,
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],
"text": [
"because for most people they are secular holidays about Santa/the Easter Bunny, not a fictional representation of Cesar Borgia.\n\nand because they are secu... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
5cqh74 | What actually happens when a city is sacked? | In ancient and medieval cities, what events would occur when a city is sacked? Would attackers run about slaughtering and stealing as they wanted, or was there order amongst them? What would they look to steal, and how would it all be transported? What would they do to the city, would it be left or occupied?
This i... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5cqh74/what_actually_happens_when_a_city_is_sacked/ | {
"a_id": [
"d9ywmjh",
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"score": [
22,
155
],
"text": [
"Follow up question: was the sacking/genocide/mass murder of Carthage an unusual occurrence or where there any other such gigantic mass killings of entire populations in pre-modern times? ",
"In ancient Greece, if you ... | [] | [] | [
[],
[]
] | |
4jzvz6 | why do humans take so long to fully develop? | Humans take over 20 years to grow and mentally develop completely, which is longer than most animals lives. Why does it take so long? What in nature causes this and has it always been this way for humans? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4jzvz6/eli5_why_do_humans_take_so_long_to_fully_develop/ | {
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"score": [
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223,
339,
11,
43,
6,
3,
18,
5,
2,
2,
2,
... | [] | [] | [
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[],
[],
[],
[],
[],
[
"http://www.scientificamerican.com/article/human-babies-long-to-walk/"
],
[],
[]
] | |
5rjgc9 | how is saudi arabia on the un panel, when they have beheaded more people than isis, in 2015? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5rjgc9/eli5_how_is_saudi_arabia_on_the_un_panel_when/ | {
"a_id": [
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"score": [
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32,
7,
11,
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3
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"text": [
"Many countries/politicians support the death penalty. It wouldn't preclude you from sitting on any UN council."... | [] | [] | [
[],
[],
[],
[],
[],
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[]
] | ||
1mfswk | Did the Romans have something like Wall street/ The stock market? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1mfswk/did_the_romans_have_something_like_wall_street/ | {
"a_id": [
"cc8sw7y",
"cc8zej4",
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"score": [
37,
8,
3
],
"text": [
"They certainly invested in each other (by offering loans with interest); [this article, published by the US Federal Reserve, covers the topic very well, offering sources for your delectation]( _URL_0_)... | [] | [] | [
[
"http://libertystreeteconomics.newyorkfed.org/2013/02/historical-echoes-cash-or-credit-payments-and-finance-in-ancient-rome.html"
],
[],
[
"http://imgur.com/ywMDsQU,DARetSX,DO5xJwi,LhyUgpO"
]
] | ||
11ajc5 | ambulances carry teddy bears to give to kids after accidents. psychologically, why does the teddy bear help? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/11ajc5/eli5_ambulances_carry_teddy_bears_to_give_to_kids/ | {
"a_id": [
"c6kqywm",
"c6kr2e6",
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"score": [
2,
10,
4
],
"text": [
"Because the only thing scarier than a car accident is Teddy Fucking Roosevelt. ",
"Being able to hold something warm and fuzzy is very comforting and offers a feeling of security. [Harry Harlow](... | [] | [] | [
[],
[
"http://www.youtube.com/watch?v=CU9jKlNK1Qc"
],
[]
] | ||
33tb9s | What did the Queen (Elizabeth II) say of the Rhodesian Republic? | Ian Smith and his cabinet signed the UDI (Unilateral Deceleration of Independence) after the Britain and the Commonwealth began to turn away from it, seeing it as a betrayal. However, before 1970, she was named as the Commander and Chief of the official Head of State of the Rhodesian Republic, even going as far as to m... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/33tb9s/what_did_the_queen_elizabeth_ii_say_of_the/ | {
"a_id": [
"cqod0k0"
],
"score": [
11
],
"text": [
"Having read several biographies about QEII, I seem to remember that she did and said nothing publicly about this situation.. The Queen is a sphinx when it come to her personal opinions and rarely if ever lets them slip out. "
]
} | [] | [] | [
[]
] | |
cxo74w | what happens to all the oil we use after we dispose of it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cxo74w/eli5_what_happens_to_all_the_oil_we_use_after_we/ | {
"a_id": [
"eymd4ek"
],
"score": [
2
],
"text": [
"It gets taken to a recycling plant, super heated and filtered and filtered again to get all impurities out. Then boom, back to the shelves. Or filtered and used in bio-diesel engines."
]
} | [] | [] | [
[]
] | ||
3wlauf | During the end of WWII is there a record of the suicide rate of German soldiers and officers? | In just about every WWII movie I watch (accurate or not) there's usually a scene where Allied soldiers find a room full of German Officers who killed themselves for fear of being captured by Allied forces. Did anyone keep track of the suicide rate of German soldiers and officers during this time? I mean hell, it's eve... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3wlauf/during_the_end_of_wwii_is_there_a_record_of_the/ | {
"a_id": [
"cxxn5y5"
],
"score": [
3
],
"text": [
"There's been some really interesting work done on suicide in Nazi Germany. When considering suicide, as an \"illness\" or as a product of it's context. A purely pathological view of suicide negates any questions regarding the choice and historica... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3vy1c8/why_did_the_nazi_leadership_commit_suicide_on/"
]
] | |
d6lgy7 | how do we make paper out of trees? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/d6lgy7/eli5_how_do_we_make_paper_out_of_trees/ | {
"a_id": [
"f0u1hye",
"f0u37vi"
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"score": [
4,
3
],
"text": [
"Paper mills liquify the pulp of the tree and turn it into thin slices. Paper reverts to its pulpy state when it gets wet.",
"Trees and plants are very fibrous. We take trees, grind them onto a pulp, spread it very thinly... | [] | [] | [
[],
[
"https://cdn.pixabay.com/photo/2017/08/16/15/09/fiber-2648066_960_720.jpg"
]
] | ||
1v52fu | why did the british army not attack loyalist paramilitaries as well as the ira during the troubles? | So I have been watching the excellent BBC documentaries 'loyalists, Provos and Brits' on the entirety of the troubles. Series can be found here
_URL_0_
What I haven't been able to grasp is if the British army was there to preside over keeping the peace and fighting 'terrorism', why was all of their conflicts with th... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1v52fu/eli5_why_did_the_british_army_not_attack_loyalist/ | {
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"text": [
"Because the Ulster Volunteer Force & Ulster Freedom Fighters regarded themselves as 100% British. They also had MPs in British Parliament as the Ulster National Party. \n\nThe IRA killed a lot of British soldiers, as they were regarded as the o... | [] | [
"http://m.youtube.com/playlist?list=PLA6BDE6CF5D0578E0&desktop_uri=%2Fplaylist%3Flist%3DPLA6BDE6CF5D0578E0"
] | [
[]
] | |
4x3zuk | if a sizable spacecraft was hovering over earth, would we be able to see it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4x3zuk/eli5_if_a_sizable_spacecraft_was_hovering_over/ | {
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"text": [
"You can spot satellites and the ISS from the ground already.\n\nThey look like shooting stars, but you can see them.",
"_URL_0_ \n\nLink on how to see the... | [] | [] | [
[],
[
"https://www.nasa.gov/centers/glenn/events/stsight.html#.V6uEHPkrJhE"
],
[],
[
"https://spotthestation.nasa.gov/sightings/",
"https://www.youtube.com/watch?v=AgoVGWazev8",
"http://astronomynow.com/wp-content/uploads/2015/08/ISS_transiting_Moon_940x940_v2.jpg"
],
[]
] | ||
aw9krw | How do scientists separate "science" from "non-science?" | This is usually a philosophy of science topic, but I'm curious to find out if we get a different angle on the answers to this question by asking scientists. Maybe we can get examples from scientists in varying fields. | askscience | https://www.reddit.com/r/askscience/comments/aw9krw/how_do_scientists_separate_science_from_nonscience/ | {
"a_id": [
"ehle6d1",
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"text": [
"Any thought is considered a valid hypothesis if it can be tested and disproved. Scientists across the world try to devise experiments that try to disprove the hypothesis. If they succeed, the hypothesis is discarded or mo... | [] | [] | [
[],
[]
] | |
8bp089 | Why do certain flavours go well together? E.g. chicken/coleslaw, tomato/mozarella, spinach/garlic, walnuts/honey, tuna/mayonaise? | askscience | https://www.reddit.com/r/askscience/comments/8bp089/why_do_certain_flavours_go_well_together_eg/ | {
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"score": [
27,
1615,
... | [] | [] | [
[],
[
"https://qz.com/677700/why-does-gin-and-tonic-taste-so-good/"
],
[
"https://www.amazon.com/Cognitive-Cooking-Chef-Watson-Innovation/dp/149262571X/ref=sr_1_2?ie=UTF8&qid=1523540265&sr=8-2&keywords=chef+watson+cookbook",
"https://www.ibmchefwatson.com/community"
],
[],
[],
... | ||
1hsart | How did Romans prepare for bed and what kind of clothing (or lack thereof...) would they wear to bed? | How would they have prepared for bed versus the way we do today? Did they wear special robes or nothing at all? Was anything ritualized or superstitious? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1hsart/how_did_romans_prepare_for_bed_and_what_kind_of/ | {
"a_id": [
"caxp15k"
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"score": [
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"text": [
"From [Daily Life in Ancient Rome](_URL_0_), by Jerome Carcopino:\n\npp. 152-153:\n\n > \"On a base of interwoven strips of webbing were placed a mattress (*torus*) and a bolster (*culcita*, *cervical*) whose stuffing (*tomentum*) was made of str... | [] | [] | [
[
"http://www.amazon.com/Daily-Life-Ancient-Rome-People/dp/0300101864/ref=sr_1_1?s=books&ie=UTF8&qid=1373219253&sr=1-1"
]
] | |
6mdmub | Unusual paths to a History PhD? | Hey,
I'm curious as to how many of you, who got their doctorates in history, followed an unusual path to it - coming from other areas unrelated to history - as opposed to the more traditional path (i.e., history undergrad/master's).
I'm at a point in my academic career (B.A. in psychology, MsC in Neuroscience) where a... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6mdmub/unusual_paths_to_a_history_phd/ | {
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"text": [
"It depends on the country. In the US it's pretty easy to switch fields at your stage, in Europe it would be much much more difficult usually. I don't know about other places.\n\nHowever: I would absolut... | [] | [] | [
[],
[],
[]
] | |
u04bm | atomic bombs | what makes them go off? what is inside of them? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/u04bm/eli5_atomic_bombs/ | {
"a_id": [
"c4r7vct",
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"text": [
"This seems fairly comprehensive: _URL_0_\n\nSearch the subreddit for a few more.",
"First of all, basically we can fuse small elements to release energy and create bigger elements, and we can split really big (and unstab... | [] | [] | [
[
"http://www.reddit.com/r/explainlikeimfive/comments/oacdj/eli5_how_the_hydrogen_nuclear_and_atomic_bombs/"
],
[]
] |
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