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 |
|---|---|---|---|---|---|---|---|---|---|
14088y | Okay, so we get a LOT of questions about knights. How prevalent were mounted warriors in the Far East? | Excluding the nomads, such as the Mongolians, how prevalent were they in say...Japan, China, Korea, Vietnam, etc? Were mounted samurai vaunted over their counterparts who were on foot? Was there status afforded to mounted warriors, or were they viewed as just another section of the military (if they were used at all?) ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/14088y/okay_so_we_get_a_lot_of_questions_about_knights/ | {
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"During the Sengoku period in Japan, the Takeda were famous for their mounted warriors. Later, when Tokugawa Ieyasu absorbed many of the former Takeda lands and retainers, he implemented some of Takeda Shingen's style of mounted warriors and comb... | [] | [] | [
[]
] | |
11lxpi | what happened in libya and why is it a presidential issue? | I feel like an idiot. I understand that the Lybian ambassador was assassinated, but do we know why? Someone please explain this whole situation to me! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/11lxpi/eli5_what_happened_in_libya_and_why_is_it_a/ | {
"a_id": [
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"score": [
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3,
2
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"text": [
"I think it was more about how Mitt Romney claimed the President handled the issue. In recent history, President Bush received substantial criticism for continuing to read to children instead of immediat... | [] | [] | [
[
"http://www.foxnews.com/politics/2012/09/12/transcript-president-obama-remarks-following-deadly-attacks-at-us-consulate-in/"
],
[],
[]
] | |
16fc9i | If there was a massive mirror placed at the edge of the universe, and we had telescopes powerful enough to see to and through it, what would we see? | askscience | http://www.reddit.com/r/askscience/comments/16fc9i/if_there_was_a_massive_mirror_placed_at_the_edge/ | {
"a_id": [
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"text": [
"Basically the mirror would show us what we looked like in the past. For every light year the mirror is distant, it would show us what we were doing two years in the past. The photons for every point in time, would take a year to get to the mirror... | [] | [] | [
[]
] | ||
1rh2sa | how a projector displays my computer screen using a lightbulb | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1rh2sa/eli5how_a_projector_displays_my_computer_screen/ | {
"a_id": [
"cdn6h33",
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"score": [
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2,
2
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"text": [
"Just as an LCD screen is an array of colored pixels with light source shining through, a video projector is a light bulb shining through an LCD. The difference is, rather than viewing the LCD directly,... | [] | [] | [
[],
[],
[]
] | ||
1rr92e | Do some planets have a tilted rotation around their star such that one hemisphere always has "summer" and the other always has "winter"? | askscience | http://www.reddit.com/r/askscience/comments/1rr92e/do_some_planets_have_a_tilted_rotation_around/ | {
"a_id": [
"cdq3xpb",
"cdq4y57"
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"score": [
2,
3
],
"text": [
"So, the reason that we have winter and summer on the Earth is because the planet's axis is titled. Contrary to popular myth, it is not because the \"farther portion\" is farther away that you have seasons, but because the so... | [] | [] | [
[],
[]
] | ||
3ssyte | why do we have dreams, and what causes us to remember them? | Please ELI5 :)
edit: Thank you all for the replies! :D | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ssyte/eli5_why_do_we_have_dreams_and_what_causes_us_to/ | {
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"text": [
"One of the things that your brain does while you sleep is put all of the things you've seen, felt, and experienced throughout the day into your long-term memory. When this happen... | [] | [] | [
[],
[],
[],
[]
] | |
2dsora | if we devoted one year to working really hard on fixing up the environment, could we stop global warming? | Is this possible? I guess we'd have to keep the economy running somewhat for this to work. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2dsora/eli5_if_we_devoted_one_year_to_working_really/ | {
"a_id": [
"cjso9ln",
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"score": [
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"text": [
"Well, we wouldn't 'stop' it overnight. We've done damage that can't be undone quickly and will need to run its course.\n\nWe can do *a lot* to stop the *increase* in global warming by switching our ene... | [] | [] | [
[],
[],
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] | |
4yv0n8 | what makes it more or less likely to have a good dream vs. a bad dream on any particular night? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4yv0n8/eli5_what_makes_it_more_or_less_likely_to_have_a/ | {
"a_id": [
"d6qpp5h",
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"score": [
2,
3
],
"text": [
"Improve chances of a good dream by putting down the cell phone and start thinking and imagining great situations and stories happening to you. Won't work for all. But can work for most. Not having a ton of not fixed or cl... | [] | [] | [
[],
[]
] | ||
e0xy65 | Why does Scandinavia have a smaller population than European Russia? | Scandinavia has around 20 million people wheras the population of European Russia is more than 100 million, despite a similar size and climate. Why is this? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/e0xy65/why_does_scandinavia_have_a_smaller_population/ | {
"a_id": [
"f8k7cra"
],
"score": [
21
],
"text": [
"The assumption in the original question is largely incorrect on both accounts. Now, the term 'Scandinavia' is pretty vague, especially in historical context, but for demonstration purposes I will be using the largest extent of he term, used to d... | [] | [] | [
[]
] | |
1bn2c7 | knighthood, obe, cbe, sir/dame, etc. | Basically what do they all mean, I think they're mostly honorary titles but how does one earn them? Who qualifies? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1bn2c7/eli5knighthood_obe_cbe_sirdame_etc/ | {
"a_id": [
"c986kbz"
],
"score": [
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],
"text": [
"In the British honours system, honours are awarded twice a year, on the Queen's official birthday and at New Year. There are no formal requirements for awarding them - the decisions are made by committees of people. In recent years, there have be... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Orders,_decorations,_and_medals_of_the_United_Kingdom"
]
] | |
6bdmkc | what does the prescription for my glasses mean? | I want to buy glasses online but I have no idea what the prescription my doctor gave me means. This is it:
Prog'R 1
+0.75
-0.75
and then there's a +2.25 off to the side.
Like, what would the spherical values for the OD and OS be? Are there cylinder values?
Here is the link to the prescription picture: _URL_0_ | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6bdmkc/eli5_what_does_the_prescription_for_my_glasses/ | {
"a_id": [
"dhlqrd1"
],
"score": [
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"text": [
"They're written in the format of: \n\nOD: Sphere | Cylinder | Axis \nOS: Sphere | Cylinder | Axis \nAdd: \n\n---------------------------------------------------------- \n\nOD should be the top line.\nOD is your right eye and OS is the left. (... | [] | [
"http://i.imgur.com/A9E4pwP.jpg"
] | [
[
"http://www.allaboutvision.com/eyeglasses/eyeglass-prescription.htm"
]
] | |
8al5lo | Would the formation of fossil fuels (coal, oil, gas etc) be a rare phenomenon on other planets? | The advancement of the human race seems to be closely related to the exploitation of these resources (for example coal for the Iron Age and still used today) and wondering how the availability of it would affect the rise of life forms on other planets | askscience | https://www.reddit.com/r/askscience/comments/8al5lo/would_the_formation_of_fossil_fuels_coal_oil_gas/ | {
"a_id": [
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"score": [
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4,
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3
],
"text": [
"Fossil fuels are formed by geologic processes from living things. The presence of fossil fuels presumes the existence of large quantities of living things sto... | [] | [] | [
[],
[],
[],
[
"https://www.newscientist.com/article/dn24754-astrophile-titan-lake-has-more-liquid-fuel-than-earth/#.Uqy2mfRDuSo"
],
[]
] | |
22hw0x | does 1 gb = 1024mb or 1000mb? | For years I thought it was always 1024 because of binary, but I keep hearing how now it's 1000 instead of 1024 when it comes to data. Is there an actual difference between them or is it just shortened to 1000 to make things simpler? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/22hw0x/eli5_does_1_gb_1024mb_or_1000mb/ | {
"a_id": [
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"score": [
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3
],
"text": [
"1024 because binary\n\n1000 if using SI units. \n\n",
"Both, it depends on who you ask. Computer scientists and programmers say it's 1024, because they like everything to be in powers of 2. Computer engineers and hardwa... | [] | [] | [
[],
[]
] | |
6vqeka | what's with the daily mass earthworm suicide on my driveway? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6vqeka/eli5_whats_with_the_daily_mass_earthworm_suicide/ | {
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25,
12,
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],
"text": [
"They try to take advantage of the cool, wet morning conditions to surface and cover longer distances. Once the sun heats up they burrow back under the topsoil before they dry ... | [] | [] | [
[],
[],
[],
[]
] | ||
5lawvr | how is graphene made? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5lawvr/eli5_how_is_graphene_made/ | {
"a_id": [
"dbuaocz"
],
"score": [
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"text": [
"While i dont know current methods. The first known way to isolate the one molecule thick layers was by 2 manchester scientists. One friday night they put a piece of tape on a piece of graphite and found that they could seperate the graphene sheet... | [] | [] | [
[]
] | ||
jqj34 | What colour would we perceive it as? (x-post from _URL_0_) | Cross-posted from /r/askreddit as per request - if you guys could give your insight into the below post, thanks!
A zillion years ago back in high school, I remember my science teacher doing a talk on the colour spectrum and how we couldn't see colours past infra-red or ultraviolet. I asked him then - if the desk was i... | askscience | http://www.reddit.com/r/askscience/comments/jqj34/what_colour_would_we_perceive_it_as_xpost_from/ | {
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"score": [
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"text": [
"Only if there was enough red light **within the spectrum that we can see** also coming off the desk. If there isn't, then looking at... | [
"http://www.reddit.com/r/AskReddit/comments/jqh7a/what_colour_would_we_perceive_it_as/"
] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Black_body"
],
[],
[],
[
"http://en.wikipedia.org/wiki/Black_body"
]
] | |
kutbg | Are restless legs something occurring within the body, or just you mind playing tricks?
| askscience | http://www.reddit.com/r/askscience/comments/kutbg/are_restless_legs_something_occurring_within_the/ | {
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"score": [
3,
2,
3,
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],
"text": [
"Are you talking about sitting in a chair and noticing that your legs are jiggling?\n\nOr [Restless Legs Syndrome](_URL_0_)?",
"I suffer from restless legs and so does a friend ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Restless_legs_syndrome"
],
[],
[
"http://en.wikipedia.org/wiki/Restless_legs_syndrome"
],
[]
] | ||
2j5w4k | In the Pacific theater of WW2, could the Allies have largely avoided land campaigns? | Looking at the casualty figures for pretty much every land campaign in the Pacific is startling, and I am having a hard time accepting the strategic importance of many land targets. For example, Guadalcanal's air field was intended to hold about the same number of aircraft as a single Essex class American carrier -- ar... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2j5w4k/in_the_pacific_theater_of_ww2_could_the_allies/ | {
"a_id": [
"cl8p3bz"
],
"score": [
6
],
"text": [
"Not really, no. The islands are necessary to carry out the bombings and the naval blockades. Taking the islands also prevented the Japanese using them to attack Allied supply lines. However, they did do this to some extent, bypassing bases like T... | [] | [] | [
[]
] | |
c9zpe8 | if 50+ spf is best, why are there sunscreens on the market with much less protection? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c9zpe8/eli5_if_50_spf_is_best_why_are_there_sunscreens/ | {
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],
"text": [
"Not claiming that I know how this works, but I think I have a good explanation:\n\nI once bought an SPF 50 bottle thinking \"bigger number means it's better... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
1ll0jk | Can condensation occur on hydrophobic surfaces? | I've read somewhere that humidity is unaffected by hydrophobic surfaces. Which ^albiet ^much ^later made me wonder if water can condense on a hydrophobic surface is humidity is unaffected as the two go hand in hand. | askscience | http://www.reddit.com/r/askscience/comments/1ll0jk/can_condensation_occur_on_hydrophobic_surfaces/ | {
"a_id": [
"cc0avcv",
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"score": [
3,
5,
2
],
"text": [
"It is possible for it to condense, but it will not happen as readily compared to hydrophilic surfaces. While surfaces generally aids the formation of droplets, the rule of thumb is the stronger the int... | [] | [] | [
[],
[],
[]
] | |
jab1w | Is it likely that targeted gene manipulation will be used to cure genetic diseases? | I have knocked out a gene in Saccharomyces cerevisiae, but the human body has trillions of cells. Can this be done in a human to cure a disease? | askscience | http://www.reddit.com/r/askscience/comments/jab1w/is_it_likely_that_targeted_gene_manipulation_will/ | {
"a_id": [
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"score": [
2,
2,
2,
2
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"text": [
"[Gene therapy](_URL_0_) is a very promising field of study, and yet is incredibly complex and difficult to translate to reality. Some mainstream problems include; getting the corre... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Gene_therapy",
"http://www.nature.com/gt/journal/v13/n18/abs/3302838a.html",
"http://www.nature.com/gt/journal/v14/n6/abs/3302925a.html"
],
[],
[
"http://en.wikipedia.org/wiki/Gene_therapy",
"http://www.nature.com/gt/journal/v13/n18/abs/3302838a.html",
"... | |
dunrwj | When and where is the Wild West? | So I know that in general, the Wild West is from like west of the Mississipi River to the Pacific. What I do not understand is the general timeframe of the Wild West and how some states are considered part of the Wild West. My best guess for a time span would be from just before the American Civil War until like the 19... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dunrwj/when_and_where_is_the_wild_west/ | {
"a_id": [
"f79dvki",
"f7avgbw"
],
"score": [
2,
2
],
"text": [
"Hello! I’m an Historian who specializes in Texas History and local Texas histories. Your question is one that I’ve seen and encountered often, and one that I really enjoy answering because of my familiarity with the Old West... | [] | [] | [
[],
[
"http://sageamericanhistory.net/gildedage/documents/TurnerFT.html",
"http://xroads.virginia.edu/~HYPER/TURNER/"
]
] | |
1ow8pf | What determines a "match" for a kidney transplant? | I figure that blood type plays a huge rope but im sure there are other factors too | askscience | http://www.reddit.com/r/askscience/comments/1ow8pf/what_determines_a_match_for_a_kidney_transplant/ | {
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"score": [
20,
3,
17,
3,
2
],
"text": [
"Blood type and the HLA (human leukocyte antigen) alleles. HLA is expressed on all cells and is recognized by your immune system to distinguish 'self' and 'n... | [] | [] | [
[
"http://www.ucdmc.ucdavis.edu/transplant/livingdonation/donor_compatible.html"
],
[
"http://en.wikipedia.org/wiki/Major_histocompatibility_complex"
],
[],
[],
[]
] | |
8i5568 | Were there any Buddhists in ancient Europe or the Near East in ancient times? | I was reading that Buddhist proselytism under Ashoka of the Indian Mauryan Empire spread as far as Eastern Europe. Greek populations living in India at the time were also proselytised \(the monks he sent to Greece, apparently\- recorded as "the country of the Yona \[Ionians\]"\- were Greek\).
Are there any recorded co... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8i5568/were_there_any_buddhists_in_ancient_europe_or_the/ | {
"a_id": [
"dyp10if"
],
"score": [
9
],
"text": [
"Not as far as we know. \nOne of the first known contacts between “Western”* culture and the Subcontinent was in 326 bc during Alexandra’s India campaign. This was not long after the death of the Buddha so Buddhism was present in the area at the t... | [] | [] | [
[]
] | |
ts1rj | The large maple tree in my yard drops thousands of seeds all over the lawn every year. Why don't any new trees sprout from them? | Just wondering why is my lawn isn't a forest of maple trees by now. | askscience | http://www.reddit.com/r/askscience/comments/ts1rj/the_large_maple_tree_in_my_yard_drops_thousands/ | {
"a_id": [
"c4p8i5b",
"c4p97uw",
"c4p9wsp"
],
"score": [
13,
3,
4
],
"text": [
"Most sprouting seeds get choked out by your lawn. If one does happen to get itself established, it is run over by your lawn-mowing before you even notice it. ",
"How do you know no trees sprout fr... | [] | [] | [
[],
[],
[]
] | |
uwu2w | do you ever actually touch anything? | Last year I learned about atoms and all the cool stuff that is and like isn't the only way your hand or something can't go through a door because the atoms in your fingers repel the atoms of the door so your hand stops. So if at the atomic level it's magnetic repulsion, are we ever truly touching something? Or are we j... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/uwu2w/do_you_ever_actually_touch_anything/ | {
"a_id": [
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"c4za3j5",
"c4zacct",
"c4zfzc0"
],
"score": [
5,
13,
4,
6,
2
],
"text": [
"Do our atoms ever literally collide with the atoms of surfaces we touch? No. That does not happen in nature (outside of extremely high energy environments ... | [] | [] | [
[],
[],
[],
[],
[]
] | |
34t76i | How much information did Muhammad have about other religions especially the Abrahamic ones? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/34t76i/how_much_information_did_muhammad_have_about/ | {
"a_id": [
"cqy69e7"
],
"score": [
3
],
"text": [
"Muhammad was a tradesman, and during his life, the most significant trade route went from modern day western Yemen up to modern day Syria. This was usually done with a caravan carrying supplies from the south in Yemen (which would have goods from... | [] | [] | [
[]
] | ||
14b1t1 | why is the crime rate in america so high compared to other developed countries? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/14b1t1/why_is_the_crime_rate_in_america_so_high_compared/ | {
"a_id": [
"c7bhhdl",
"c7bi6c9"
],
"score": [
8,
7
],
"text": [
"The true answer: no one is really sure.\n\nThere are many theories of varying validity.\n\nI'll outline a couple (and refutations in brackets).\n\nWealth inequality, the poor people are poorer, and the rich richer, then in o... | [] | [] | [
[],
[]
] | ||
85ilj7 | If you choke on ice, will it melt due to body heat before you die? | askscience | https://www.reddit.com/r/askscience/comments/85ilj7/if_you_choke_on_ice_will_it_melt_due_to_body_heat/ | {
"a_id": [
"dvz5cfh"
],
"score": [
5
],
"text": [
"Yes it will melt. But if it is before you die is dependent on many variables such as the size of the ice, how long it takes to melt, if the melted water causes you to asphyxiate etc. So your question can only be answered hypothetically unless mor... | [] | [] | [
[]
] | ||
4xasa2 | why are sticker backs so sticky but the paper on them is so slick, yet if i peel the backing off then put it back on again it'll get stuck this time? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4xasa2/eli5_why_are_sticker_backs_so_sticky_but_the/ | {
"a_id": [
"d6dwovc"
],
"score": [
18
],
"text": [
"The glue interacts with the air and becomes tacky. "
]
} | [] | [] | [
[]
] | ||
3pvjtp | Does having a psychiatric illness increase the chances of developing more psychiatric problems later on? | Im a paramedic and I've noticed that almost all patients with psychiatric disorders have at least two. For example Bi-polar and schizophrenia.i see those together a lot but is it from common symptoms or some other correlation? | askscience | https://www.reddit.com/r/askscience/comments/3pvjtp/does_having_a_psychiatric_illness_increase_the/ | {
"a_id": [
"cw9t6hh",
"cwadrv7"
],
"score": [
14,
3
],
"text": [
"What you have described is called \"comorbidity.\" Two psychological disorders that co-occur. There are some psychological disorders that are often correlated with other psychological disorders; for example, people with m... | [] | [] | [
[],
[]
] | |
23qt4u | How much of a carbon footprint do dead trees leave? What happens to the carbon? | I overheard my boss today saying that dead trees leave the second biggest carbon footprint in the world. I have no idea where he got his facts from but I don't know enough to argue with him. It seems like just saying trees die and leave a massive amount of carbon pollution is only part of the story. | askscience | http://www.reddit.com/r/askscience/comments/23qt4u/how_much_of_a_carbon_footprint_do_dead_trees/ | {
"a_id": [
"cgzqrux",
"cgzr4ed"
],
"score": [
4,
2
],
"text": [
"leaving this to be answered in detail by somebody more knowledgeable, but in a nutshell: since the tree absorbs carbon from the atmosphere during it's lifetime and releases it upon decay the sum of carbon take up and release... | [] | [] | [
[
"http://www.nature.com/nature/journal/v455/n7210/abs/nature07276.html"
],
[
"http://en.wikipedia.org/wiki/Carbon_cycle",
"http://en.wikipedia.org/wiki/Biochar"
]
] | |
1wff8d | would confessing a major criminal act in the confession room make the religious figure legally obligated to say something? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1wff8d/eli5would_confessing_a_major_criminal_act_in_the/ | {
"a_id": [
"cf1gpkn"
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"score": [
2
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"text": [
"Because your post isn't asking a simplified conceptual explanation, but rather for an answer, its been removed. \n\nYou should try /r/answers, /r/askreddit or even one of the more specialized answers subreddits like /r/askhistorians, /r/askscie... | [] | [] | [
[]
] | ||
23llp9 | why do cows huddle together when a storm is expected? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23llp9/eli5_why_do_cows_huddle_together_when_a_storm_is/ | {
"a_id": [
"cgyc714"
],
"score": [
2
],
"text": [
"I'm definitely no expert, but I'll make an educated guess, based on, of all things, \"Happy Feet\", where the group huddles against the cold. Those on the outside are exposed more than those in the middle, but are still exposed less than they wou... | [] | [] | [
[]
] | ||
4wym50 | how are the single-celled organisms arise from organic substances? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4wym50/eli5_how_are_the_singlecelled_organisms_arise/ | {
"a_id": [
"d6b01kv"
],
"score": [
3
],
"text": [
"The first person to answer that will almost certainly win a Nobel prize. Abiogenesis is one of the large open questions of biology.\n\nThere are plenty of theories out there, everything from coastal puddles to glaciers and deepsea black smokers h... | [] | [] | [
[]
] | ||
1ic3xi | Is it possible to trace POW/Concentration camp prisoner details from WW2? | My grandfather had a four digit number crudely tattooed on his wrist. He served in WW2 but never spoke about it to anyone. We think he drove a tank. That's pretty much all we know about his time in the army.
Out of simple curiosity I would be very interested in finding out some of the history behind what happened to h... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ic3xi/is_it_possible_to_trace_powconcentration_camp/ | {
"a_id": [
"cb30uod"
],
"score": [
2
],
"text": [
"I have *never* read or heard anything about POW's having numbers tattooed on them. *EDIT: I remember now that it WAS done to a small portion of Soviet POW's, but not Western POW's.* Indeed, not even all Holocaust survivors had this happen to t... | [] | [] | [
[]
] | |
i3wp6 | What experimental evidence do we have that c is the speed limit of the cosmos? | askscience | http://www.reddit.com/r/askscience/comments/i3wp6/what_experimental_evidence_do_we_have_that_c_is/ | {
"a_id": [
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"score": [
17,
3,
12,
4,
2
],
"text": [
"This hypothesis would be more of one that we'd seek to falsify rather than confirm. The confirmation is that we've never observed anything that can transmit... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
960wek | To what degree did Zoroastrianism preserve Iranian/Persian polytheism? What do we know about Iranian polytheism that otherwise wasn't continued into Zoroastrianism? And how widespread was the pre-Zoroastrian belief system? | Did it persist in Iranian-speaking peripheral areas like Tajikistan and Afghanistan? Is there any evidence that Iranian polytheists were assimilated directly into Buddhism or Hinduism rather than ever going through a Zoroastrian-phase in Afghanistan? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/960wek/to_what_degree_did_zoroastrianism_preserve/ | {
"a_id": [
"e3yfk44"
],
"score": [
26
],
"text": [
"Ah, a question about Zoroastrianism! Always fun to see. The broad approach of my answer will mainly rely on the perspective offered in Mary Boyce's _Zoroastrians: Their Beliefs and Practices_ (especially the first three chapters).\n\nThere's one... | [] | [] | [
[
"http://www.avesta.org/yasna/y12j.htm",
"www.iranicaonline.com"
]
] | |
4zv6uv | What factors determine what direction a quantum of light goes from its source? | askscience | https://www.reddit.com/r/askscience/comments/4zv6uv/what_factors_determine_what_direction_a_quantum/ | {
"a_id": [
"d6z0yhv"
],
"score": [
6
],
"text": [
"I'm going to interpret this question in terms of gamma decay, because that's what I'm most familiar with. Although much of what I'll say applies to atomic transitions as well. \n\nGamma decay is when an excited nucleus relaxes to a lower energy l... | [] | [] | [
[]
] | ||
62f5tg | Were WWII US Army infantrymen trained in skills that current US Army troops are no longer taught? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/62f5tg/were_wwii_us_army_infantrymen_trained_in_skills/ | {
"a_id": [
"dfm7xgn"
],
"score": [
10
],
"text": [
"Basic and individual training for replacements (the main training type that was focused on after 1943 when most combat units had deployed overseas) varied in length during WWII. Prior to Pearl Harbor, it was 12 to 13 weeks long, being cut to eig... | [] | [] | [
[
"http://www.dtic.mil/dtic/tr/fulltext/u2/a185226.pdf",
"http://www.history.army.mil/html/books/002/2-2/CMH_Pub_2-2.pdf"
]
] | ||
5xjkho | Is it easier to burn fat that has been stored more recently or does it take the same amount as far that has been stored for years? | askscience | https://www.reddit.com/r/askscience/comments/5xjkho/is_it_easier_to_burn_fat_that_has_been_stored/ | {
"a_id": [
"dekfn37"
],
"score": [
2
],
"text": [
"Adipose tissue tends to be laid down in a pattern, starting at the navel and hips. As it grows it will fairly quickly involve all of the skin (making the body \"smooth\") but will be very prominent in a few parts (while a very few may remain fatl... | [] | [] | [
[]
] | ||
2e92xj | Is it possible to have negative time dilation? | So we just finished relativity at university. This is the formula for the Lorentz transformation: t' = y(t - xv/c^2 ) This is the formula for the Lorentz factor: y= 1/√(1 - (v/c)^2 ) . It occurred to me while I was working through a question that you could easily create genuinely possible conditions that would produce ... | askscience | http://www.reddit.com/r/askscience/comments/2e92xj/is_it_possible_to_have_negative_time_dilation/ | {
"a_id": [
"cjxa560",
"cjxc4ut"
],
"score": [
3,
13
],
"text": [
"Edit:\n\nOkay, i looked back at what i wrote and realised it was complete crap. I'm really sorry about that. Okay let me start from the beginning.\n\nFor a stationary observer (A) at the origin (t=0,x=0) of an event sees th... | [] | [] | [
[],
[]
] | |
5iatwf | why you "don't pass on the right"? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5iatwf/eli5_why_you_dont_pass_on_the_right/ | {
"a_id": [
"db6o6l8",
"db6o9kv"
],
"score": [
2,
3
],
"text": [
"It's difficult to see into the right hand lane until you're pretty much all the way merged. If there happens to be an obstruction in the road then you wouldn't be able to see it until it's too late. \n\nSlower traffic should... | [] | [] | [
[],
[]
] | ||
1hd56t | Would you suffocate if a snorkel was too long? | On the atomic level CO2 is heavier than just O2, so there might be enough to reason that if you had a thirty foot long snorkel above water, while you're beneath, the CO2 would pool. But is that really how it would work, I mean there's more in air than just those two gasses. Help me out?
EDIT: Since a lot of this is ab... | askscience | http://www.reddit.com/r/askscience/comments/1hd56t/would_you_suffocate_if_a_snorkel_was_too_long/ | {
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"catj36x",
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"cat6gkx",
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"cat76sp",
"cat853n",
"cat8ysr",
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"catfrvp"
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"score": [
2,
2,
28,
7,
79,
9,
2,
1224,
... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Poiseuille%27s_law#Liquid_flow_through_a_pipe"
],
[],
[],
[],
[],
[],
[]
] | |
31ztxi | How much did gold mining technology improve between the 16th and the late 19th century? | The industrial revolution and mechanization happened in between, but were there subtler improvements in technical ability to extract more gold out of the same sample?
I ask because I wonder about mining areas which were let go of in earlier centuries because they were deemed not viable or cost effective, but which had... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/31ztxi/how_much_did_gold_mining_technology_improve/ | {
"a_id": [
"cq6myur",
"cq6r7m7"
],
"score": [
10,
2
],
"text": [
"From the 16th to the late 19th centuries, changes in precious metal mining occurred on two fronts. The first was mechanical, meaning that the late medieval approach outlined by [Georgius Agricola (1494 – 1555) in De re meta... | [] | [] | [
[
"http://en.wikipedia.org/wiki/De_re_metallica",
"http://www.loc.gov/pictures/item/nv0084/",
"http://www.amazon.com/The-Roar-And-Silence-Shepperson/dp/0874173205",
"http://www.onlinenevada.org/articles/virginia-city-and-gold-hill",
"http://www.amazon.com/Western-Mining-Otis-Young-Jr/dp/08061135... | |
a9um7y | Book recommendations on Sun Yat-Sen, Deng Xiaoping and Lee Kuan Yew? | I've been very interested in modern eastern asian history and have decided to read up on these people in particular, due to their role in the success of their countries. However they seem to be shrouded in a veil of bad history and I'm very unsure of which books to pick, I would therefore love some recommendations.
... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a9um7y/book_recommendations_on_sun_yatsen_deng_xiaoping/ | {
"a_id": [
"ecmlk9y"
],
"score": [
3
],
"text": [
"For the Deng Era, I'd recommend \"Deng Xiaoping and the Transformation of China\" by Ezra Vogel. It's fairly dense and not entirely chronological, but it's excellent for understanding the Deng Era. Be warned, however, you're going to want to hav... | [] | [] | [
[]
] | |
6wc6tr | why cameras and screens go crazy when recording/displaying lots of thin stripes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6wc6tr/eli5_why_cameras_and_screens_go_crazy_when/ | {
"a_id": [
"dm6wzz5",
"dm733k0"
],
"score": [
12,
19
],
"text": [
"Most cameras today are digital. This means instead of a chemical pad that light hits, it has a sensor pad that's a bit like a computer screen, full of pixel-like light sensors. Right now the way these sensors work, a littl... | [] | [] | [
[
"http://pop.h-cdn.co/assets/15/47/1447700421-propeller.gif",
"http://resourcemagonline.com/wp-content/uploads/2015/11/Effects-of-Rolling-Shutter-on-a-Propeller.jpg"
],
[
"https://en.wikipedia.org/wiki/Moir%C3%A9_pattern"
]
] | ||
2qt0l2 | How does adrenaline make your muscles stronger? | askscience | http://www.reddit.com/r/askscience/comments/2qt0l2/how_does_adrenaline_make_your_muscles_stronger/ | {
"a_id": [
"cn9fc0x",
"cn9l1yf",
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"score": [
95,
5,
2
],
"text": [
"Adrenaline (or epinephrine as it is more commonly called in a scientific context) is a hormone (it is also a neurotransmitter but that isn't relevant) that binds to proteins on the membrane of muscle c... | [] | [] | [
[
"http://www.bio.unipd.it/bam/PDF/17-6/Batts.pdf",
"http://www.ncbi.nlm.nih.gov/books/NBK22429/"
],
[],
[
"https://en.wikipedia.org/wiki/Hysterical_strength",
"http://www.sciforums.com/threads/how-exactly-does-adrenaline-dull-pain.89094/"
]
] | ||
17qthx | Did Austria-Hungary have to pay for any reparations or war crimes in World War I? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/17qthx/did_austriahungary_have_to_pay_for_any/ | {
"a_id": [
"c882cc4"
],
"score": [
7
],
"text": [
"Well Austria-Hungary didn't actually exist after WWI so technically no ;)\nBoth Austria and Hungary did end up having to pay some reparations, but the allies recognized that neither country really had the ability to pay, and neither of them ended... | [] | [] | [
[
"http://books.google.ca/books?id=EHzgiYw0kegC&printsec=frontcover&dq=Paris+1919&hl=en&sa=X&ei=wRgNUeO7FdKx0AG_gIGYAg&ved=0CC4Q6AEwAA"
]
] | ||
3742r6 | Why does energy make air rise and fall? | People say that hot air rises and that cold air drops, but I want to know why does the presence of energy in a object affect where it moves (up or down)? | askscience | http://www.reddit.com/r/askscience/comments/3742r6/why_does_energy_make_air_rise_and_fall/ | {
"a_id": [
"crjqefu"
],
"score": [
6
],
"text": [
"Hot air is less dense than cold air; it rises due to buoyancy. This can be summarized using the ideal gas law: PV = nRT. As temperature (T) rises, for a mostly constant pressure, volume also increases. But since the mass stays the same, density g... | [] | [] | [
[]
] | |
f8m3zw | To what extent were the Beaver Wars a conflict between Indigenous nations? What role did European nations play in the conflicts? How did they effect European & Indigenous territorial claims? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/f8m3zw/to_what_extent_were_the_beaver_wars_a_conflict/ | {
"a_id": [
"fintgwc"
],
"score": [
6
],
"text": [
"The Iroquois Confederacy had become involved in the European fur trade in the 17th century, and depended on trading beaver pelts to Dutch and, later, to English partners in exchange for firearms, tools, blankets and other goods.\n\nThey had exhau... | [] | [] | [
[]
] | ||
16w764 | Has there ever been a time in history when a major industry in a county suddenly collapses. More inside | For example: An oil rich middle eastern country quickly runs out of oil. Oil represents a major part of many middle eastern countries. I'm trying to imagine a scenario in which a country like Saudi Arabia not being able to sell oil because of extremely low demand (because of technology). Or won't be able to pump out a... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/16w764/has_there_ever_been_a_time_in_history_when_a/ | {
"a_id": [
"c7zzyb0"
],
"score": [
7
],
"text": [
"Well not on the scale as \"a nation goes bankrupt because its sole source of income suddenly vanishes\" \n\nBut on a smaller scale two occurances come to my mind: \n\n1) the fishing industry of [Lake Aral](_URL_0_) which was wiped out cause the l... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Aral_Sea#Impact_on_environment.2C_economy_and_public_health",
"http://en.wikipedia.org/wiki/Collapse_of_the_Northern_Cod_Fishery"
]
] | |
5dwy9e | why does feelings of romantic love give some people anxiety? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5dwy9e/eli5_why_does_feelings_of_romantic_love_give_some/ | {
"a_id": [
"da7zfxj",
"da80edm"
],
"score": [
3,
2
],
"text": [
"Because it can make some people feel vulnerable. If you love it might be lost. If you love it may not be reciprocated.",
"Having something you want is scary, because you'll loose it. Feeling good is an ill omen of horri... | [] | [] | [
[],
[]
] | ||
3bsa13 | why do speakers make a buzzing noise when the volume is turned up? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3bsa13/eli5why_do_speakers_make_a_buzzing_noise_when_the/ | {
"a_id": [
"csp0q06",
"csp7rph"
],
"score": [
25,
2
],
"text": [
"Speakers are powered by an amplifier.\n\nAn amplifier takes a low-level signal as an input, amplifies it, and pushes it through the speakers to make sound.\n\nWhen no input is present, the amplifier basically amplifies the ... | [] | [] | [
[],
[]
] | ||
6fedv4 | why do cicadas spend such a long amount of time underground? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6fedv4/eli5_why_do_cicadas_spend_such_a_long_amount_of/ | {
"a_id": [
"dihhe5z",
"dihiqr3"
],
"score": [
3,
5
],
"text": [
"Hard to be eaten when you are underground, and there's a lot easier access food down there (assuming of course, the eggs were laid in the right place)\n\nBasically, maybe at one time some cicada grubs tried to make it above ... | [] | [] | [
[],
[]
] | ||
1klosh | Did Hitler actually ever visit a concentration kamp? (I mean, did he actually see what really happened there?!) | Hi Reddit!
My question is; did Adolf Hitler ever see the concentration camps? I know there is a picture of Heinrich Himmler visiting a camp, but did Hitler ever really see how gruesome those camps really were?
For example; when thinking of the Egypte cival war, I just don't feel it. I need to see it upclose to care. H... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1klosh/did_hitler_actually_ever_visit_a_concentration/ | {
"a_id": [
"cbq7fp8",
"cbqhppg"
],
"score": [
18,
2
],
"text": [
"New answers are welcome in this thread as well, but check out [this](_URL_0_) thread.",
"The simple answer to your question is no.\n\nHitler never visited any concentration camps and never spoke publicly about the killi... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/16kmkv/did_hitler_ever_witness_the_horrors_of_a/"
],
[]
] | |
6j6dng | why does it seem like tv networks sync up their commercials? do they actually do this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6j6dng/eli5_why_does_it_seem_like_tv_networks_sync_up/ | {
"a_id": [
"djbwpha",
"djcpm8j"
],
"score": [
6,
2
],
"text": [
"Pretty simple explanation. Each show has a standard number of commercial breaks. They want those commercial breaks to divide up the show evenly (usually two in the middle and one at the end/beginning). Since nearly all shows... | [] | [] | [
[],
[]
] | ||
75zam6 | Why did the German people embrace Hitler, a foreigner, as their leader? | I understand that Austria and Germany share a Germanic culture (duh), but I don't think New Zealand would accept an Australian as their leader although they have somewhat similar cultures.
It also seems like Hitler would have an Austrian accent (idk because I don't understand any German), so this would definitely seem... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/75zam6/why_did_the_german_people_embrace_hitler_a/ | {
"a_id": [
"doa47ea"
],
"score": [
8
],
"text": [
"From [an earlier answer of mine](_URL_1_)\n\nGerman citizenship and emigration laws were somewhat flexible in the Weimar Republic when it came to recognizing who was German. Although historians like Annemarie Sammartino have found that the practi... | [] | [] | [
[
"https://hiphilangsci.files.wordpress.com/2016/10/kartedesdeutschenreiches.jpg?w=605&h=501",
"https://www.reddit.com/r/AskHistorians/comments/63xaom/austrianborn_adolf_hitler_officially_became_a/"
]
] | |
10lnu6 | Mar Curiosity Rover Finds Definite Evidence of Water. Why is it definitely water and not any other liquid? | Saw a post about this in r/worldnews. This is the link they provided:
_URL_0_
as i read it, it seems most of their evidence comes from the patterns of rock distributions that could have only happened as a result of "water flow." Is there some reason is has to be water? Can they tell that from the flow patterns someho... | askscience | http://www.reddit.com/r/askscience/comments/10lnu6/mar_curiosity_rover_finds_definite_evidence_of/ | {
"a_id": [
"c6ej5hq",
"c6em9js"
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"score": [
4,
2
],
"text": [
"There just aren't any other substances that are available in mass quantities and are liquid at the expected Martian temperatures and pressures.",
"When it comes to volatiles, Mars has 2 kinds in abundance (mostly stored ... | [] | [
"http://www.npr.org/blogs/thetwo-way/2012/09/27/161896238/streams-of-water-once-flowed-on-mars-nasa-says-photos-prove-it?utm_source=NPR&utm_medium=facebook&utm_campaign=20120927"
] | [
[],
[]
] | |
2z0290 | There was supposedly a reasonably complex Mississippi Valley civilization before Europeans arrived. What would the biggest settlement in the area, and what would it have looked like? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2z0290/there_was_supposedly_a_reasonably_complex/ | {
"a_id": [
"cpejyqs"
],
"score": [
31
],
"text": [
"Not only before Europeans arrived, but after as well. The various Mississippian societies extended over a broad swath of eastern North America, and of course there were \"reasonably complex\" non-Misssissippian societies in other parts of the co... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/2nhgjt/did_european_explorerssettlers_encounter_any/cmdt03f",
"http://www.reddit.com/r/AskHistorians/comments/2yyot4/was_there_any_naval_warfare_present_in_the_new/cpehjhg",
"http://upload.wikimedia.org/wikipedia/commons/d/d5/Mississippian_sites_on_Lower... | ||
168ixv | headphone price to quality. | So, I've spent the last week trying to find a decent pair of replacment headphones, and deear god is it impossible!
I understand that as a general rule of things, more expensive means more quality.
Yet why is it, that headphones I pay 250 dollars for, sound like i'm listening to music through a tin can, yet the 30 doll... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/168ixv/headphone_price_to_quality/ | {
"a_id": [
"c7tq9zu",
"c7tqlp8"
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"score": [
4,
2
],
"text": [
" > As a small aside, why is it that every pair of headphones I've looked at over the last week only have 20,00 - 20,000khz while the 30 pair had 10 - 27,000khz?\n\n20 Hz - 20,000 Hz is considered the range of human hearing.... | [] | [] | [
[
"http://graphs.headphone.com/graphCompare.php?graphType=0&graphID"
],
[]
] | |
20wmxe | Could Steiner's assault actually change the way the war was going? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/20wmxe/could_steiners_assault_actually_change_the_way/ | {
"a_id": [
"cg7enmz"
],
"score": [
3
],
"text": [
"At that point, with Soviet forces pounding through the outskirts of Berlin, there is nothing that could have changed the direction of the war. The Germans had no air force left, no functioning economy, no well of available (let alone trained) man... | [] | [] | [
[]
] | ||
2pf34c | Why were the door lintels in really old dwellings so low? | Were people really that much shorter in olden times? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2pf34c/why_were_the_door_lintels_in_really_old_dwellings/ | {
"a_id": [
"cmwts7g"
],
"score": [
2
],
"text": [
"Some of this was that people really were, on average, significantly shorter in pre-modern times, mainly because of inferior childhood nutrition.\n\nHowever, it was also practice to build the door lintels significantly lower than the ceiling heigh... | [] | [] | [
[]
] | |
33bk3z | How do antiparticles react with themselves and baryons/leptons in gravity? | During the first 380,000 years of the universe(background radiation), antiparticles were roughly just as numerous as other mass particles. | askscience | http://www.reddit.com/r/askscience/comments/33bk3z/how_do_antiparticles_react_with_themselves_and/ | {
"a_id": [
"cqjh04j"
],
"score": [
2
],
"text": [
"Baryogenesis would have occurred within the first second or so after the Big Bang. This killed the majority of antimatter. The 380,000 years comes from when the universe became cool enough to allow electrons and nuclei to condense to neutral atom... | [] | [] | [
[
"http://physics.stackexchange.com/a/110786",
"https://en.wikipedia.org/wiki/Graphical_timeline_of_the_Big_Bang",
"http://arxiv.org/abs/gr-qc/9707062",
"http://www.amazon.com/Quantum-Spacetime-Thermodynamics-Chicago-Lectures/dp/0226870278",
"http://arxiv.org/abs/gr-qc/0308048"
]
] | |
2p8akh | how do ethnic groups in geographic regions form? why are japanese considered a different ethnicity to han chinese or french to german? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2p8akh/eli5how_do_ethnic_groups_in_geographic_regions/ | {
"a_id": [
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"text": [
"This is actually a very complex issue and has been debated since ancient times. The Greek philosopher Herodotus gives us the first known example of determining what ethnicity actually is. According to him, ethnicity is not only a shared descent (... | [] | [] | [
[]
] | ||
6euqng | how exactly does traffic work? | Why are some days stop and go and the next day at the same time absolutely fine? Aside from the obvious like accidents and construction, what causes the slow movement? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6euqng/eli5_how_exactly_does_traffic_work/ | {
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"did56lj",
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2,
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"text": [
"Differences in acceleration. When you are at a red light, there is a line of cars behind you. You see the light turn green, and so does everyone else. You begin to accelerate, but the cars behind you d... | [] | [] | [
[
"https://www.youtube.com/watch?v=iHzzSao6ypE"
],
[],
[]
] | |
2fdb3h | I seldom see the Emperor Caracalla included in lists of the worst Roman Emperors of all time. Why is this? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2fdb3h/i_seldom_see_the_emperor_caracalla_included_in/ | {
"a_id": [
"ck8aj9b"
],
"score": [
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],
"text": [
"Which lists are your referring to? It'd be helpful to see who beat him out, and I can't say that I 've seen one without him."
]
} | [] | [] | [
[]
] | ||
90m9yy | why is it that whenever my girlfriend takes me shopping my legs immediately get tired and i want to sit down, but i run 10km everyday without breaking a sweat?? ty in advance | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/90m9yy/eli5_why_is_it_that_whenever_my_girlfriend_takes/ | {
"a_id": [
"e2ri8ql",
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"score": [
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3
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"text": [
"Generally motion is easier to endure because humans are long distance running pack animals of high endurance. And because of this, sedentary standing is not as easy. When shopping, you are not in constant motion, you stop an... | [] | [] | [
[],
[]
] | ||
2d35o1 | What happens to the planets? | So, we now know supernovae are responsible for the dust that forms new planets. Yay for star formation. But, what happens to the planets that surround those stars? The gravity of the star changes. Do the planets change orbits? Do they get blown out of the star system? Do they get obliterated? And what about the 'Oort C... | askscience | http://www.reddit.com/r/askscience/comments/2d35o1/what_happens_to_the_planets/ | {
"a_id": [
"cjlu4mh"
],
"score": [
27
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"text": [
"The energy of an supernova is huge. No, it's vast. No, it is beyond freakin comprehension.\n\nThe energy of an supernova is so high, that our humand minds can't understand it. You might have heard of an supernova having some billion times the br... | [] | [] | [
[]
] | |
2njb7f | What is the difference between quarks and neutrinos? | Do neutrinos make up quarks? Or are they separate from each other? | askscience | http://www.reddit.com/r/askscience/comments/2njb7f/what_is_the_difference_between_quarks_and/ | {
"a_id": [
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"cme7rao"
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"score": [
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3
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"text": [
"Quarks are much much much more massive and interact through the strong force, and have electric charge. As particle categories go they are not very similar. Just qualitatively, neutrinos are typically flying off at almost t... | [] | [] | [
[],
[]
] | |
232c14 | eli18: hormones and the 'lock and key' mechanism | Could someone please explain to me, in detail, how hormones work in relation to the 'lock and key' mechanism. More specifically, what does this phrase refer to? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/232c14/eli18_hormones_and_the_lock_and_key_mechanism/ | {
"a_id": [
"cgsq1s2"
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"score": [
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],
"text": [
"Hormones are specially shaped to fit into certain receptors, like a key is shaped to fit into a particular lock."
]
} | [] | [] | [
[]
] | |
1v3uqs | - why does alcohol affect everyone's personality differently? | Is there a simple answer to this? When I drink, I become more mellow and quiet while most people become loud and obnoxious. What's up with this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1v3uqs/eli5_why_does_alcohol_affect_everyones/ | {
"a_id": [
"ceogl67",
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"score": [
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"text": [
"\"A drunk mind speaks a sober heart\" -Rousseau (I think)",
"What we consider to be normal behavior or the normalization of behavior is usually very conscious and the result of effort. Remove inhib... | [] | [] | [
[],
[],
[]
] | |
2kyl09 | why does the type of drawing with doubled eyes, hurt your eyes to look at? | As seen here in this top post,
_URL_1_
and here it is in the traditional depiction of the Chinese legendary figure Cangjie,
_URL_0_ | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2kyl09/eli5_why_does_the_type_of_drawing_with_doubled/ | {
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"text": [
"We're a social species which communicates using the face, so our visual systems have evolved special circuits which identify faces in our visual input. This kind of image is pretty confusing for them, basically.\n \nThey're also the culprits beh... | [] | [
"http://en.wikipedia.org/wiki/Cangjie",
"http://www.reddit.com/r/pics/comments/2kxtwm/tried_my_hand_at_the_twoface_face_it_went_okay/"
] | [
[]
] | |
6lacv4 | Why do Europeans and their descendants tend to clap on the 1 and 3 while other groups, like black Americans, clap on the 2 and 4? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6lacv4/why_do_europeans_and_their_descendants_tend_to/ | {
"a_id": [
"djsj8tz",
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"score": [
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"text": [
"Is that true? It's been a long time since I picked up a horn, but isn't the stress determined by the music, not the audience?",
"Believe it or not, the answer to this goes back to the Ancient Greeks. At a broad level, ... | [] | [] | [
[],
[]
] | ||
p4nce | How do my headphones (or any single speakers for that matter) transmit several sources of sound through one output? | I was playing a popular action RTS the other day whilst talking to my friends on vent, listening to music and receiving message updates from Skype (yes it was noisy). Suddenly it occurred to me that my little headphones with one speaker in each ear was managing to give me a whole range of different audio, all of which ... | askscience | http://www.reddit.com/r/askscience/comments/p4nce/how_do_my_headphones_or_any_single_speakers_for/ | {
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"c3mhv8l",
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"c3mi2w0"
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"score": [
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],
"text": [
"As a professional audio designer, questions like these really remind me why I got into the field in the first place. Others have given the direct answers to your question, so I'll... | [] | [] | [
[
"http://www.youtube.com/watch?v=qKyuqnnguDk",
"http://www.youtube.com/watch?v=IUDTlvagjJA",
"http://en.wikipedia.org/wiki/Hrtf"
],
[],
[],
[
"http://highermeaning.org/Authors/JLO/fig04.gif",
"http://sheetmusic.berkeley.edu/courses/music23/andy/pagesandpics/a440guitar.gif"
]
] | |
516c2o | why 90% of species lived on this planet are now gone? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/516c2o/eli5_why_90_of_species_lived_on_this_planet_are/ | {
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"text": [
"Very simply:\n\nClimate changes -- > Selective pressure on existing species-- > unfit members of existing species die (ultimately become extinct) -- > (si... | [] | [] | [
[],
[],
[],
[],
[]
] | |
10bhj1 | Why is it I can watch hours and hours of TV programming with little to no latency, but I have to buffer a two-minute movie trailer? | I'm assuming it has something to do with codecs and compression technology and all that, but it seems like the internet could move at least as fast as the cable TV signal coming in, right? I never have to let NBC or FOX buffer. The TV doesn't hiccup between commercials. | askscience | http://www.reddit.com/r/askscience/comments/10bhj1/why_is_it_i_can_watch_hours_and_hours_of_tv/ | {
"a_id": [
"c6c3sw0",
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"score": [
3,
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],
"text": [
"Someone else can fix or add to this but I'll get the ball rolling.\n\n1. Tv signal is more like water into your house. Somewhere a company is just cramming a bunch of it into the system and the instant you turn on your tap, ... | [] | [] | [
[],
[]
] | |
2nb3cw | Good movies depicting medieval Japan. | Hey guys, couldn't find a list(or anything related, really) of movies about Japan's feudal era(Sengoku-Jidai and the like).
I love the period, though most of my knowledge was gained in Total War Shogun 2 and Wikipedia research. :p
What do you recommend? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2nb3cw/good_movies_depicting_medieval_japan/ | {
"a_id": [
"cmc0f0w"
],
"score": [
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],
"text": [
"Not an historian but I really enjoyed RAN, its an older movie and incredibly long though."
]
} | [] | [] | [
[]
] | |
24zzi1 | would it ever be possible to have a person remain conscious and mentally "active" if their brain were put into a jar after their heart stops (like futurama depicts)? | _URL_0_
^ For those of you who are not familiar. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/24zzi1/eli5_would_it_ever_be_possible_to_have_a_person/ | {
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"text": [
"No. If the human heart stops beating, the blood stops flowing. If no new blood, full of vital oxygen, is pumped to the brain continuously, meaning every single second of your life, braincells will start dying.\n\nIf you had... | [] | [
"http://discovermagazine.com/~/media/Images/Zen%20Photo/S/sci-fi%20timeline/1735.jpg?mw=738"
] | [
[
"http://theinfosphere.org/All_the_Presidents%27_Heads"
],
[]
] | |
9qn48z | why did brazil belong to the portuguese and the philippines belong to the spanish? | It's been years since I took any classes on the heyday of the Spanish and/or Portuguese empires, but I still do remember some things. Notably, I seem to remember that at one point, the two fledgling empires signed an agreement that essentially said that everything west of the Atlantic was Spain's to colonize, and every... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9qn48z/eli5_why_did_brazil_belong_to_the_portuguese_and/ | {
"a_id": [
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"score": [
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"text": [
"The dividing line wasn't the Atlantic, but [a line roughly halfway between Cape Verde and Cuba](_URL_0_). That puts the eastern part of Brazil on Portugal's side. However, Brazil did then expand over the line, and the Philippines are on the Portu... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Treaty_of_Tordesillas"
]
] | |
7gxzbk | why does rubber cause so much friction? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7gxzbk/eli5_why_does_rubber_cause_so_much_friction/ | {
"a_id": [
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"score": [
2,
2
],
"text": [
"Because rubber is soft and squishy but also durable, rubbers compounds are slightly adhesive to most surfaces, they stick rather well,it causes a lot of friction. Ad that to the fact that it easily gets into the small cracks... | [] | [] | [
[],
[]
] | |
c74y5s | Who were the eunuchs "which have made themselves eunuchs for the kingdom of heaven's sake?" | This is from the Bible, [Matthew 19](_URL_1_).
I asked over in r/BibleScholars, but the Bible scholars don't seem to have much of an idea. One theory (proposed there) is that the eunuchs who "made themselves eunuchs for the kingdom of heaven's sake" were married men.
My thought is that Jesus was referring to the [Ga... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/c74y5s/who_were_the_eunuchs_which_have_made_themselves/ | {
"a_id": [
"etxmbk8"
],
"score": [
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"text": [
"Hello! I'm sure you're surprised to be getting a reply now, but the alert for this question has been starred in my inbox since you posted it... [I talked about Matthew 19:12](_URL_0_) some time ago, the book I reference that discusses this verse ... | [] | [
"https://en.wikipedia.org/wiki/Galli",
"https://www.biblegateway.com/passage/?search=Matthew+19&version=KJV"
] | [
[
"https://www.reddit.com/r/AskHistorians/comments/20f366/eunuchs_and_homosexuality/cg2pej6/",
"https://www.worldcat.org/title/castration-an-abbreviated-history-of-western-manhood/oclc/50079029&referer=brief_results"
]
] | |
1ji415 | How did the Roman naming system work? | Was there any system to determine what a son/daughter's name would be? How were titles given and who gave them? Were people (including Emperors) referred to by their titular name once given a title? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ji415/how_did_the_roman_naming_system_work/ | {
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"text": [
"In a typical Republican/Imperial Roman name there were three main names they had: the praenomen (like a given name), nomina (family name/surname), and the cognomen (sort of like ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Roman_naming_convention"
],
[],
[
"http://www.reddit.com/r/AskHistorians/comments/1gm2ei/whats_the_difference_between_a_roman_family_and_a/"
],
[]
] | |
1q59wt | When did the tradition of terrifying Drill Sergeants come about? | When and where did the military tradition of the Drill Sergeant Hartman-style drill sergeant come into being? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1q59wt/when_did_the_tradition_of_terrifying_drill/ | {
"a_id": [
"cd9dizx"
],
"score": [
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"text": [
"I'd argue they've existed as long as there has been semi-professional armies, possibly even before. \n\nHere's the story of a centurion as told by Tacitus in *Annals*\n\n\"...and they killed a centurion, Lucilius, to whom, with soldiers' humour, ... | [] | [] | [
[]
] | |
28kwpz | Why are we trying to define a kilogram by 6.02214179*10^23 Si-28 atoms or by using the Watt Balance when we could define it as the number of Joules equal to the speed of light squared? | I may have been a bit unclear but as we can define mass as m=E/(c^2 ) why can't we define 1kg of mass as the amount of energy it requires for this mass to be equal to 1 (or in other words (299792458^2 )J = 1kg)? | askscience | http://www.reddit.com/r/askscience/comments/28kwpz/why_are_we_trying_to_define_a_kilogram_by/ | {
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22,
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],
"text": [
"1 J can be defined as the work done by pushing with a force of 1 N for a distance of 1 m. 1 N can be defined as the force to accelerate 1 kg at 1 m/s/s. So you need the kilogram... | [] | [] | [
[],
[],
[],
[
"http://www.bipm.org/utils/common/pdf/RoySoc/Michael_Stock.pdf",
"http://www.nist.gov/calibrations/upload/j61jab.pdf"
]
] | |
2jk18u | Why is it that Judaism is still followed today in comparison to the other ancient religions of Mesopotamia? | If anyone knows of some essays explaining the reasoning behind this please post them in the comments. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2jk18u/why_is_it_that_judaism_is_still_followed_today_in/ | {
"a_id": [
"clcrpi4"
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"score": [
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"text": [
"Judaism isn't the only one mind you zorostrianism and mancheanism are both still going with groups of dedicated believers \n\nBut I peg Judaism thriving to the value placed on writing down and recording Jewish scripture and events which combined... | [] | [] | [
[]
] | |
307c39 | When I bake cookies, my oven adds energy to them in the form of heat. Do baked goods therefore contain more energy (calories) than the raw dough? | askscience | http://www.reddit.com/r/askscience/comments/307c39/when_i_bake_cookies_my_oven_adds_energy_to_them/ | {
"a_id": [
"cpramqx",
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"score": [
4,
3
],
"text": [
"Baked foods have more total energy, but not (necessarily) a higher caloric value due to the thermal energy. When you eat something hot, you take that thermal energy as heat and you heat up. But when you digest something, t... | [] | [] | [
[],
[]
] | ||
22cgsk | how does medication dissolve into our blood stream after we take a pill? | From what I understand the pill goes to your stomach like any piece of food would but I don't get how it dissolves and gets to your blood stream by there. Does it diffuse through your stomach's walls? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/22cgsk/eli5_how_does_medication_dissolve_into_our_blood/ | {
"a_id": [
"cglftwx",
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"score": [
3,
2
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"text": [
"the medicine travels to the small intestine and is absorbed into the bloodstream there along with other nutrients in the food",
"Pharmacy student here:\n\nMany medications diffuse through the cell *membrane* because ther... | [] | [] | [
[],
[]
] | |
49tdvb | What about different soaps allows them to form stronger/weaker bubbles? | I understand the basic chemistry and physics of bubble formation. The polar/nonpolar ends of the soap molecules form a bilayer with water or gas. The bubble breaks when the top of the bubble layer stretches too thin.
My question is, what in the soap itself might affect its cohesive properties? Is there a difference be... | askscience | https://www.reddit.com/r/askscience/comments/49tdvb/what_about_different_soaps_allows_them_to_form/ | {
"a_id": [
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"score": [
14,
4
],
"text": [
"In terms of macroscopically measureable properties, the reduction in surface tension by surfactant addition gives you an idea of the change in stability of bubbles that are formed. Chemically that corresponds to creating lo... | [] | [] | [
[],
[]
] | |
psd73 | If someone is extremely intoxicated, does their urine have an alcohol content? If so, can it be calculated? | So, I know that your blood stream raises in alcohol content as you drink more and your breath can be measured. Do your kidneys completely filter out all of the alcohol as you pee? | askscience | http://www.reddit.com/r/askscience/comments/psd73/if_someone_is_extremely_intoxicated_does_their/ | {
"a_id": [
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"score": [
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"text": [
"You can metabolize alcohol at a rate of about .5 ounces of ethanol per hour, for a 150lb person in good health, which takes care of about 95% of the alcohol in your system. This is the liver, not the kidneys, which is why alcoholics often are at ... | [] | [] | [
[]
] | |
2wasok | the fcc and the internet "scandal" | I just don't get the gist of what any of it actually means. Explain without using some of the terms people use that have no meaning to me. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2wasok/eli5_the_fcc_and_the_internet_scandal/ | {
"a_id": [
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"score": [
5,
4
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"text": [
"You're going to have to be more specific. The two biggest and most recent issues have been the Title II reclassification and the hotel WiFi restriction ruling. I can explain more on either one, but if neither of those sound ... | [] | [] | [
[],
[]
] | |
4z4vc7 | Why can you use two different ways(dot product and cross product) to multiply two vectors? | askscience | https://www.reddit.com/r/askscience/comments/4z4vc7/why_can_you_use_two_different_waysdot_product_and/ | {
"a_id": [
"d6szsqo",
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"score": [
9,
3
],
"text": [
"Neither of them are really \"products\". They are both just ways to combine two vectors in a meaningful way. \"Product\" are operations that take in two elements of a set and output another element of the same set. Additiona... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Inner_product_space"
],
[]
] | ||
19s0a4 | how off-shore banking works? | Just don't understand how people go about opening off-shore accounts and how it works to evade taxes. Maybe just sophisticated tax accountants/financial planners? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/19s0a4/eli5_how_offshore_banking_works/ | {
"a_id": [
"c8qs5y4"
],
"score": [
9
],
"text": [
"Let's say my company does a bunch of work for you, and you owe me $1M.\n\nInstead of paying me directly, I have you pay a shell company in the Cayman Islands. The IRS has no idea who owns that company, and no way to track it to me. I am legally... | [] | [] | [
[]
] | |
3vtkyi | if france drops the euro as its currency, how would that effect the rest of europe, and u.s.a? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3vtkyi/eli5_if_france_drops_the_euro_as_its_currency_how/ | {
"a_id": [
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"score": [
4
],
"text": [
"One fewer country, particularly one with a stable economy, dropping the euro would likley devalue the euro against other countries' currency. The dollar is already strong but something like this could push it over the euro in value which wouldn't... | [] | [] | [
[]
] | ||
cx7l36 | why did queen elizabeth agree to suspend parliament? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cx7l36/eli5_why_did_queen_elizabeth_agree_to_suspend/ | {
"a_id": [
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"text": [
"It's 2. The Queen's involvement with Parliament is almost entirely symbolic, and she is expected to approve whatever decisions they make. Should the Queen actually do otherwise, it'd be a major political upheaval. While \"If things get bad, the Q... | [] | [] | [
[]
] | ||
afm4zr | if cables transfer data in "1/0" by being "on/off" with electricity, what's the difference between cables? like what happens in an hdmi that doesn't happen in an aux cord? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/afm4zr/eli5_if_cables_transfer_data_in_10_by_being_onoff/ | {
"a_id": [
"edzq218",
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"score": [
14,
2,
2
],
"text": [
"That's how digital cables work. By chance you've actually picked a digital (HDMI) and an analogue (AUX) cable in your question.\n\nAn analogue cable transmits data in a continuous flow where it changes... | [] | [] | [
[],
[],
[]
] | ||
mpus7 | Studies have been telling us that a glass of red wine a day is beneficial to one's health. Can you get this same health benefit just by drinking grape juice? | My Mormon mother usually counters with the statement about the juice if I mention that the wine is beneficial, so I am just wondering... Is drinking grape juice the same as drinking wine? | askscience | http://www.reddit.com/r/askscience/comments/mpus7/studies_have_been_telling_us_that_a_glass_of_red/ | {
"a_id": [
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],
"text": [
"The process of maceration in wine making includes the skins and stems, which increases the level of phenols including flavonoids. Resveratrol is a phenol Which may have health benefits and is found in much greater quantity i... | [] | [] | [
[],
[]
] | |
o275m | How do animals know how to move in a pack, fly in a flock, swim in a school, etc? | I've always wondered how birds and fish know to move together... | askscience | http://www.reddit.com/r/askscience/comments/o275m/how_do_animals_know_how_to_move_in_a_pack_fly_in/ | {
"a_id": [
"c3drl6n"
],
"score": [
3
],
"text": [
"[This article](_URL_0_) should answer your questions; the \"See also\" links are also good reads.\n\nBasically each animal watches other animals around it and makes a decision based on what they do. So they work as a collective organism."
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Collective_animal_behavior#Collective_decision_making"
]
] | |
17zloo | If a live brain cut cleanly in half, would both halves still tick and have separate thoughts? | I was in a thread and saw a gif of that guy from Thirteen Ghosts, where he gets sliced cleanly in half (dividing front and back).
_URL_0_
I was wondering if both halves of the brain may, for a few seconds anyway, be able to think on their own. | askscience | http://www.reddit.com/r/askscience/comments/17zloo/if_a_live_brain_cut_cleanly_in_half_would_both/ | {
"a_id": [
"c8acvo5",
"c8adhgt",
"c8afiig",
"c8akre9",
"c8alagp"
],
"score": [
5,
34,
20,
7,
2
],
"text": [
"Cases of this are discussed in this fascinating essay:\n\n_URL_0_",
"This Wiki link (_URL_0_) talks about the severing of the two hemispheres, and the v... | [] | [
"http://www.reddit.com/r/funny/comments/17z4j2/say_hello_to_the_guy_upstairs/c8a8t5t?context=3"
] | [
[
"http://www.patheos.com/blogs/daylightatheism/essays/a-ghost-in-the-machine/"
],
[
"http://en.wikipedia.org/wiki/Split-brain"
],
[
"http://www.reddit.com/r/askscience/comments/iee9g/if_you_become_a_splitbrain_patient_which_side/",
"http://www.reddit.com/r/askscience/comments/jzh2q/split_br... | |
c2sgj8 | why if arms and legs are exposed to the sun for the same amount of time, do arms typically come out more tan/burnt? | I thought maybe because the arms have less surface area than the legs but my arms always tan faster than my legs. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c2sgj8/eli5_why_if_arms_and_legs_are_exposed_to_the_sun/ | {
"a_id": [
"erma506"
],
"score": [
12
],
"text": [
"The sun is above you. The first thing it hits is the arms. Your body and clothes provide an intermittent shield of shade to your legs. If you were to, say, sunbathe by laying on a lounge chair and don't move, your legs will tan equally as fast. ... | [] | [] | [
[]
] |
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