Subset (10)

eli5 · 25k rows

Split (1)

train · 25k rows

query stringlengths 20 300	positive listlengths 1 1	negative listlengths 1 1
why does US employment law allow such incredible insecurity?	[ "It's actually worse than you think. The two week notice is a common requirement for the employee to provide the employer. IE, if I am an accountant at a company and I want to gracefully quit my job to take employment somewhere else, I should provide a two week notice to my boss. But in most, if not all, states...	[ "Because the types of permissions people are usually concerned about are usually... * Location data, either current or past * email, phone contacts The vast majority of laptops and all desktops do not have GPS chips, so location data isn't a concern. While people may store email addresses and phone numbers on their...
why can people visit Chernobyl without effects of radiation today?	[ "Visitations to Chernobyl are highly regulated, and can still be very dangerous if you break the rules that are in place. For example, you're only allowed to travel along certain routes, as some areas are more contaminated than others. You can't touch anything, or bring anything out with you. There's a dress code, ...	[ "Just go to green areas of Google Maps. If someone sees you and stops you, just explain you thought it was a national forest/park like in Google Maps. During hunting season people park by roads and walk into forests all the time." ]
why would a car travelling round a roundabout at progressively higher speed move outwards?	[ "This has been answered before. _URL_0_ Accelerating doesn't change your turn radius until you get fast enough that friction can't handle it, and you skid." ]	[ "An actual ELI5 Version (not ELIaPhD): There is a type jelly in your ears that helps tell your body whether you're right-side-up or upside-down. We're not completely sure how, but our best guess is that alcohol travels to the jelly in your ears and changes it's \"jelliness.\" This makes your brain confused, and it...
Genetic manipulation of chickens for commercial purposes	[ "Pretty much all domestic animals and food crops that people breed/farm have undergone this kind of change. Often cross breading related species has speed up this process (think dog breeds). I would not call this genetic manipulation purely because that could lead to confusion as the term often refers to scientific...	[ "This has been done before, with animals. Here is a video allegedly showing an old Russian experiment done with a dog. It looks real to me, but, then so did The Wizard of Oz. Warning, it might be disturbing and upsetting to watch. _URL_0_" ]
Why do cigars smell completely different when you're the one smoking compared to when someone else is smoking?	[ "I’m not a cigar smoker but my father in law is and he explained that cigars are best enjoyed through your mucus membranes (mouth and nose, passive inhaling) and that you’re really only supposed to smoke enough to keep it lit. This is a very different experience compared to smoking a cigarette or a joint where peop...	[ "[This](_URL_0_) previous thread explains it as [entrainment](_URL_2_). When changing the diameter of your lips, the airflow is subject to the [Bernoulli effect](_URL_1_) where it speeds up. When the air moves faster, it draws in more surrounding air which is cooler than your body temperature, thus making it feel c...
If it weren't for the mass extinction, would dinosaurs evolve into what would seem to be modern day lizards, etc, or could they devlop thought patterns similar to humans?	[ "Just so you know - Dinosaurs were on the earth for about 160 million years, so they had already had more time to evolve than we had. :)" ]	[ "Look at it like this: They were species closely related to us, similar to goats to sheep, or dogs to wolves or coyotes. Sheep and goats can have viable offspring (that cannot reproduce and so cannot create a viable offshoot) even though they are two distinct species. Dogs, wolves, and coyotes can all interbreed, a...
Why is there such a big difference between speeds reported by task manager and apps such as steam?	[ "Steam is reporting MB/s, or megabytes per second. Your task manager is reporting Mbps, or megabits per second. There are 8 bits in 1 byte. So 228 Mbps is 28.5 MB/s which is actually very close to what Steam is telling you. There is a difference of only 1.2 MB, which could be explained by sampling at different mo...	[ "You borrow money from the bank. That's credit. They expect you to pay it back with a 'fee' which is interest. APR is the annual rate of interest. If you borrow $100 for a year at $10 APR then you pay back $110. It's not quite as simple as this in general because, with credit cards, interest stacks differently for...
If fossil fuels ever becomes too expensive to be a viable source for air travel, what are some alternatives we can use to power planes in the future?	[ "Synthetic kerosene made from biomass at $9/gal is not a heck of a lot more expensive than Jet A (approaching $7/gal) But in answer to your question, compressed hydrogen at 70MPa ( at 123MJ/kg) has nearly 3 times the energy density of jet a (at 42MJ/kg) by mass. As far as alternative fuel vehicles go, aircraft are ...	[ "Need more detail! Was the pilots voice being played through the speakers? If so, are your headphones wireless? Or did the headphones not cancel out the noise like you thought they should? Edit-- * If playing through the speakers, your headphones are wireless and the signal sounded fine: digital comm problem (im...
I've heard a lot of people say that 'there was no good/bad side in The Great War'. Is this really true?	[ "The Armenian genocide by the Turks was a war crime. The use of poison gas was too, but all sides used it. I've never seen the German reprisals in Belgium described as a war crime, perhaps because Belgians were actively resisting the Germans. Part of the reason for disillusionment and cynicism was the inflammatory ...	[ "This goes back to the French Revolution. Before the revolution, members from different classes would very occasionally meet when called by the king to advise him. The assembly of the different classes (also known as estates) was called the Estates General. The king called a meeting of the Estates General shortl...
Why do beans make you fart?	[ "Long answer: _URL_0_ Short answer: beans contains types of sugars (called oligosaccharides) that our body can't break down. Instead, these sugars get digested by the bacteria that live inside our intestines. The digestion process produces gases, mostly hydrogen and methane, which eventually escape your body." ]	[ "When you attempt to close the door, you're pushing and compressing air into the room. With nowhere for that air to go, it tries the only possible escape route - out the door that you're trying to close." ]
During precision tasks involving the eyes like putting in contacts/eyedrops, why do we often have the reflex of opening and slightly distorting our mouths?	[ "It's not a reflex, it's just a learned motion that tightens the skin and muscle on the side of the face that you're attending to. It helps you to keep your eye open and avoid the blink reflex. It only feels reflexive because you learned it so young that it's now an ingrained unconscious movement." ]	[ "While you're drinking you can't breathe out, so you're essentially holding your breath to take a longer chug of a drink you really want, after you let that out and go \"ahhh\", not to mention relaxing your throat." ]
why is it always harder to put on shoes than to take them off, even if the laces are looser?	[ "buckling stress. the tall, thin sides of the shoe will bend under compression (when you are putting the shoe on) well before the material itself would fail. in tension (when you are taking your foot out), there is no buckling. it's the same basic reason you can snap a ruler easily by pushing on the ends, but pulli...	[ "That's just it. It takes a while to amass information and use it. An animal just does whatever comes natural, aka 'instinct'. But humans are taught and trained and learn and practice and... and... Layers and layers of information and training to get us to the point where we can actually achieve more than the previ...
How does turning off my faucet in ohio help kids in Africa get clean water?	[ "It doesn't, the ad was intended to make you associate Colgate with feeling virtuous and then want to buy Colgate the next time you're at the store." ]	[ "One search isn't going to do much. They have hugely complicated algorithms in place to find what they are looking for. It might raise a flag, but a single flag isn't going to do much. By the way, just because you don't live here doesn't mean we aren't watching Creepy Smile." ]
Please explain to a Canadian why so many Americans seem to oppose the Patient Protection and Affordable Care Act (Obamacare).	[ "Only ~15% of Americans don't have health insurance. The \"average American\" already has insurance and doesn't want his/her costs and coverage to be threatened. PPACA doesn't really reduce costs so much as it transfers costs. Some people pay more so others can pay less. No one wants to be the guy that has to pay m...	[ "In the country of Rwanda there were different groups of people. One was called the Hutus, and the other was called the Tutsis. The Hutus didn't like the Tutsis because the Tutsis had more money, and always bossed the Hutus around. Then one day the French government which was was in charge of Rwanda tried to allow ...
Can it be too hot out for there to be humidity in the air?	[ "Ah... sort of? Humidity is a measurement of how saturated the air is with water vapor. Warm air can hold more water than cold air. So if you have say, 10 liters of water vapor in a 100 m^3 room, and raised the temperature, the humidity would go down, as the air's capacity to hold water increases. So in theory, if ...	[ "Hand sanitizer has a high alcohol content which requires less energy to evaporate than water. Also, because it's on your hands, it is pulling heat from you very quickly (you'll notice it makes your hands cold)." ]
What really caused the break up of the USSR?	[ "The sharp drop in oil prices has been considered to be a major factor in the break up of the Soviet Union. The USSR was an oil exporter and prices dropped from around $66 bbl (per barrel) in 1980 to $20 bbl in 1986. This was a substantial financial blow that has been recorded as one of the 'last straws.' Their bud...	[ "hi all. Just a reminder that this is a history sub, so we're looking for in-depth and informed responses from people with expertise in the subject matter. Source material citation is encouraged. Conjecture, opinions, and rumours do not meet sub standards. Thanks!" ]
What's the deal with the Celts and the Norse?	[ "To clarify, I don't just mean 'Celts' and 'Norse/Nords', I mean any and all peoples from Ireland, Britain and Scandinavia. Prehistoric peoples, Gaelic peoples, Anglo-Saxons, Vikings, etc." ]	[ "Follow on question - given that the boundaries of England and France were somewhat in flux during this time, was the Arthur legend thought of as \"ours\" or \"theirs\" by English subjects on the (now) French mainland? How did the Arthur legend, which has modern connotations of national identity, fit into the cultu...
How do animals give birth without any medical help?	[ "The placenta separates itself. Even humans births, it's not medically assisted. The placenta and umbilical cord is still attached to baby when it exits the mother. It's not required to cut the cord. it's actually recommended NOT to cut the cord until minutes after birth. The cord will still have blood in it un...	[ "Wildlife photographer here. They do it with long lenses, and weeks of squatting in cold, damp nature blinds, waiting for the right scene to happen in front of them. I cruise around Yellowstone for days at a time with a 600mm lens looking for critters. Or if you happen to be Walt Disney, you cheat. For the 1958 wil...
What is the advantage of our facial skin producing more oil than the rest of our body parts?	[ "Oil produced by skin, among other things provides protection from bacteria. Oil is important, too much is just as bad as too little though. The skin on our face tends to be thinner than other areas of the body. The amount of sebaceous glands, hair follicles, etc. is therefore \"designed\" with this in mind. (\"Des...	[ "Evolutionary response. It's good that feces and rotten fruits look disgusting so you don't eat it and girls are pretty so you make babies with them. Bot of these traits help you reproduce and send these genes to your children." ]
Why do planets further from the sun receive less energy from its light? How does 'empty' space diminish this energy?	[ "Imagine you build a spherical shell around the sun, just bigger than the sun itself, and that the shell is absorbing all the incident radiation. Each square-meter of this shell would be receiving a very large amount of power from the sun. Then imagine you double the radius of that shell. Now, because its surface a...	[ "Photons need first to penetrate into the semiconductor, then they need to kick around an electron or a hole (absence of electron in semiconductor lattice), in order to donate their energy to the cell. But some photons are reflected at the surface. Some are absorbed in the material before they even reach the active...
Why do we consume things that are considered "acquired tastes"? If something tastes bad, why go back for more?	[ "because eating something that is different is usually enjoyable. even if its too bitter/sweet/strong than you prefer, its still a different taste, and once you get the \"acquired taste\", you start to like it. you can relate it to that you have a favorite food, but you wouldn't eat the food all day every day, you ...	[ "Why pay for the next Star Wars movie when old episodes of Buck Rodgers is available for free. They are pretty much the same, right? While many people see porn as a single use commodity, there is a core of hardcore porn fan (hardcore fans, not the porn). They have performers and series they like and follow, and whe...
How youtube keeps the porn away.	[ "There are three main techniques for filtering content... * User reports. Youtube has a button that a viewer can click when they see a video that shouldn't be there. If that button gets clicked, Youtube will have an employee check it out. The more clicks it gets, the more likely they'll investigate right away. * Au...	[ "I really appreciated [this guy's no-nonsense explanation of mindfulness meditation](_URL_1_) btw: Someone at Google, [really appreciates meditation.](_URL_0_)" ]
If you spray disinfectant on a piece of rotten meat, is it then edible again?	[ "Spraying disinfected on meat could a) cause the meat to become toxic because of the disinfected b) the disinfected may fail to kill all of the pathogens present (they may not have access to subsurface pathogens). c) some of the components of the pathogens as toxic and can cause illness despite the fact that the p...	[ "While I've got some knowledge here, I don't have the qualifications to discuss things, so let me offer some other relevant links for discussing hygiene... * [With deodorant first really coming out commercially in 1888 in Philadelphia, did most of the world just smell like armpits once the clock struck noon on a wa...
If pain is your body's way of telling you to stop doing something, then why does exercise hurt?	[ "Med student currently procrastinating from my dissertation on pain here. Pain is a signal warning you of potential damage. In the case of exercise, you are ripping muscle fibres among other things, hence it is painful. In a wider sense your body cannot tell if something will be good long term, only short term, thi...	[ "I'm sorry that I'm no expert, but I remember reading about this the last time a similar question was asked: _URL_0_ Basically, you percieve time faster after your run because of endorphines released during the work out, which means that the music seems slower. This is apparently also why a lot of rock musicians pl...
How do Hindus Know What Caste Another Hindu is From?	[ "* Surnames are often related to caste. This is the easiest way for me to guess in an urban environment. * Communities in rural area are often grouped according to caste. In my village, the brahmins have a separate neighborhood. So does the milkmen, the fishermen, etc. however the occupation has blurred a lot in th...	[ "Why are noses different in size, why are people different heights, why do we have different hair colors?" ]
What did the Empire of Trebizond call itself?	[ "Also, why did they include emperor of the Iberians in their title? Is it just for the prestige of claiming descendance from the old Roman empire?" ]	[ "Those titles go back to an original indo european language. They have persisted in all European languages with modification." ]
Universes in black holes?	[ "Chris Adami, professor of microbiology and astronomy (I know, odd combination) who has done some work related to black holes, had [an AMA](_URL_2_) in /r/science the other day. I'll just carry over [this comment](_URL_0_) > It is true, we don't know what's behind the event horizon. If the black hole would be suff...	[ "The Schwarzchild solution describes the vacuum outside of a spherically symmetric mass distribution. So if you drew a big sphere around a large enough part of the universe and removed all of the mass outside it, that would be sphere with radius smaller than the Schwarchild radius. But since there is mass outside a...
Should you really be worried about vaccinating your children?	[ "No. The original article supposedly linking vaccines to autism has been discredited and its author has been censured." ]	[ "_URL_2_ columnist William Saletan waded into this issue several years ago with similar questions to yours. Here's an article posted AFTER his initial article and several followups, all of which can be reached via links within the article. It's an interesting journey with commentary from psychologists, statistician...
Did the Romans have any conspiracy theories like we do today about who ran the world? Freemasons, Illuminati etc.	[ "Follow up question: how well are we able to answer the OPs question? I am not a historian, but a chemist so forgive my ignorance. My understanding is that much of the written sources we have from the distant past come from the writings of 'nobles', clergy and other high ranking people as they were actually literat...	[ "In addition to [Pompeiian graffiti](_URL_1_) and other [epigraphy](_URL_3_), much of which was quite crude, we also have the books for a number of comedic plays by [Plautus](_URL_4_) and [Terence](_URL_0_) and satirical poems by [Horace](_URL_5_) and [Juvenal](_URL_2_). And what were they like? Much like humor in ...
Industrial Heat have acquired Rossi's Low Energy Nuclear Reaction. Are they idiots, or is there some plausibility to Rossi's claims?	[ "I know nothing about the technology, but you would first want to know who \"Industrial Heat\" is. The term is generic and search on it yields too many hits to be of use. The press release provides an email addresses, not a web site. If you try to go to the website at _URL_0_ you get redirected to the press release...	[ "Have there been more than normal? I don't know if there's anything out of the ordinary. The media will often take any discovery in cell and molecular biology and apply it to the treatment of cancer, and researchers funding often comes from the treatment of disease. Sites share what sounds interesting, and I might ...
What's the difference between a savings and checking account and is it important?	[ "A checking account: * usually accrues no interest * can used to pay bills via checks, debit card transactions, and ATM withdrawals * usually has no limit on the number of transactions that can be done A savings account: * accrues interest (though not much these days) * typically limits the kind and number of trans...	[ "Many sites still store unencrypted passwords and are easily hacked with SQL injection techniques. Some run their Web server as root and have their database server on the same machine, completely exposed. Never use the same password for sensitive services like your main email, your bank, insurance company, etc. U...
How are pop-up and generally annoying web ads viable?	[ "The same reason you get viagra and penis pill spam in your email. Some people are unbelievably stupid and willing to spend money to prove it." ]	[ "It's barely economically feasible, and even then, that's only the case if you happen to be in an area where the electricity rates are relatively low. Pile on top of that the huge up-front cost of installation (not just buying the panels, but getting them installed, wired to the grid properly, getting the nec...
If camera lenses are circular, why do they produce a rectangular image?	[ "The camera lens actually produces a circular image, but only a portion of it is captured. The images' shape comes from the sensor size rather than the lens. It's also more practical to have a digital image where all lines are of equal length. The \"Kodak No. 1\", an early comsumer-friendly camera, took circular ph...	[ "Generally speaking, many of those older movies were shot on film rather than being captured digitally (in fact, most movies are still shot on film then transferred to digital mediums in post production). Film has a _very_ high resolution - much higher than 4k. All they need to do is go back and transfer the film t...
How can bacteria get into the gut after birth to form the gut flora?	[ "Every breath you take, every move you make, those bacteria are everywhere. How many times should you wash your hands but do not? There is speculation that bacterial spores travel across interstellar space. There is also speculation that being too clean means children are not exposed to enough challenges for their ...	[ "Most nations grant citizenship based on blood, not geography. In fact outside of the Vatican I cannot think of a single country that doesn't grant automatic citizenship to newborn children of their citizens - assuming the paperwork will be filled out eventually. If your parents have the citizenship of a country y...
Why are doctors and nurses encouraged to work such long shifts(like 14hrs +) Wouldn't the quality of care be of utmost importance, and decrease as staff get tired?	[ "To some degree having them work longer shifts reduces the frequency of hand offs which is where a significant amount of medical errors are generated through specific details about a patient being left out and the incoming doctors ignorance of the detail possibly leading to a bad outcome. Its a trade off though as ...	[ "I worked on Law & Order: SVU for 2 seasons. Basically each episode was prepped (pre-production: location scouting, rough blocking, casting, etc) in 8 working days (M-F). The same episode was then shot the following 8 working days. Then after that, it would go into post-production (editing and such). The director n...
How is my boss at the pizza place I work at able to pay all of his employees cash without anyone (IRS) looking into it? This is incredibly illegal no?	[ "It is, but both parties have incentives to be quiet. Employees prefer to be paid more (as they pay less tax) and the employer prefers to pay less (as they pay less tax)." ]	[ "someone earlier on ELI5 asked why Snoop Dogg could talk about smoking weed and not get arrested, and this is similar. It's just not worth police time chasing down minor offenses that they see on TV. Especially when they have no way to prove what they saw on TV was real" ]
What would happen if an airplane pilot flew a commercial jet up, towards space?	[ "It would stall. Planes fly because air passing below their wings exerts a sufficiently high pressure to counteract gravity. In space, there is no air, and so planes cannot fly there. The plane would however stall long before it reached the edge of our atmosphere because at very high altitudes, the air becomes thin...	[ "Because they aren't fully pressurized to the same air pressure as on the ground. It is still a lower pressure. I don't remember how little, but it is enough to make your ears pop." ]
Why does the US get cheaper gas prices than Canada?	[ "Firstly, where the hell is $1.30 low? That's really high IMO. Secondly, you left out exchange rate. It's $0.86 to $1.13 CAD, not what you said. Lastly, Canada has a lot more tax than the US." ]	[ "If you have Netflix there's a very good documentary titled \"the world without US\" It explains your exact question." ]
If you were to shrink down to the size of an ant, would food taste the same? examples (cheese, cheerios, cola)	[ "It all depends on what type of magic is used to shrink you. I don't mean to be flippant, but since it's not possible to shrink matter, and since the human body wouldn't be able to operate properly if reconstructed at that scale from regular-sized atoms (the brain wouldn't be able to be complex enough), there's no ...	[ "The basic requirements are carbohydrates, fats, proteins and water. A nutrient liquid containing just the right combination of the above would keep you alive for a while. Add some vitamin & mineral supplements and it will keep you alive indefinitely. It also helps to consume soluble and insoluble fiber (cellulose)...
where the term "Making out" comes from.	[ "> The sexual connotations of the phrase \"make out\" appear to have developed in the 1930s and 1940s from the phrase's other meanings of \"to succeed\". Such as, \"I went to Las Vegas and made out really well\"" ]	[ "_URL_0_ \"The Milwaukee protocol (MP), a procedure reported to prevent death after the onset of rabies symptoms, has been performed over 26 times since its inception in 2004 but has only saved one life. Overwhelming failure has lead health officials to label the protocol, a red herring.\"" ]
Why don't we use antifreeze to remove snow from driveway.	[ "Antifreeze doesn't melt ice. It just prevents water from becoming ice when it gets cold. The antifreeze molecules — which are usually ethylene glycol — get in between the water molecules and prevent crystals from forming, so the water stays liquid below the freezing point. But once the crystals have formed, antifr...	[ "I've actually built one for a science fair before. I used _URL_0_ as a reference guide: _URL_2_ _URL_1_ It worked, but know going in that you will not get a huge amount thrust. Your setup would probably do better, but it will still most likely not be a lot. What I ended up doing that had a more striking visual eff...
why is it that a lot of soft drink inventors were pharmacists?	[ "Depends a bit where you are from, but generally speaking it was pharmacists selling carbonated mineral water. They probably thought it was a bit plain and added different things for health benefits (herbs) or for taste to add to resell value, and all of a sudden you had flavoured carbonated water, which is what mo...	[ "generally to help your stomach, thin your throat secretions, and hydrate you. some people hate water." ]
Why is it that I only see airconditioning units protruding from the sides of buildings in Asia?	[ "It's a lot cheaper to put window AC in than central AC. Plenty of less well to do areas in the US have window AC units." ]	[ "They are very popular in the Los Angeles, California automotive scene. It's not a fad there, they have been doing it for decades. Like putting a special stereo in your car to impress girls, putting in a lowrider suspension it an aftermarket auto modification." ]
Saw this thing in a book about Nic Tesla, and I have no idea what it is. Can askscience help?	[ "I'm not really sure, but from this website: _URL_0_ the caption to the picture says > Above: Nikola Tesla, with Roger Boskovich's book \"Theoria Philosophiae Naturalis\", in front of the spiral coil of his high-frequency transformer at East Houston St., New York" ]	[ "Those are Maxwell's Equations in Gaussian unit form. See _URL_0_ for more information, but in order they're Ampere's Law, Faraday's Law of induction, Gauss' Law and Gauss' Law for magnetism. Together they describe the interactions and behaviour of electric and magnetic fields." ]
How do electric trams work?	[ "The overhead catenary is the \"live\" wire and the circuit is completed by the rails on which the tram runs and are grounded." ]	[ "Normal microscopes use visible light, which reflects off of the object you are looking at, back through the lens, and into your eye. The constraint to that is that light has a specific wavelength, and it is very difficult to see things that are smaller than the wavelength of light you are using. Electron microscop...
I came across this 2013 paper that found two commonly prescribed drugs to be potent inhibitors of EBOV infection in mice, what happened to this research?	[ "They're still working on the research, as you can see by this [2014 paper](_URL_0_). I don't know if the companies that sell those drugs are doing the abbreviated clinical trials you'd need to use them for a different disease or not. Keep in mind that the paper you mentioned is from a year ago, clinical trials rar...	[ "Several reasons: * Better technology. Many chambers were detected by sonar or radar. They would send a signal through the stones and listen for irregular echoes. Today's sonar and radar imaging techniques are better than they were in the past. The equipment is more sensitive, uses different frequencies, and with d...
the science behind comfort food.	[ "Historically, humanity had the opposite problem that we do now - currently we have too much food, too much fat, too much sugar, etc. But tens of thousands of years ago, starvation was a much bigger issue. So it made sense for humans to try to find the most energy-dense foods they could, which tend to be sugary, fa...	[ "You could just be bored. I know I sometimes eat just because I don't have anything else to do. If your meal was mostly simple carbs, it's probably your blood sugar coming back down from the post-meal spike." ]
Now that we have hudreds of years of history to look back on, on top of computer technology--why is there such debate on how an economy should be run?	[ "This is like saying that by now we should have more than enough data to fully understand and build a human brain. No. Just no. An economy is a horrendously complex thing. You can't just look at a few variables like that and decide that you've figured it out. That would be very much like deciding that since we've ...	[ "It depends. In the US and other 1st-world countries, you can use tax records, asset prices (assets are stocks, real estate, etc.), salary data and other freely-available data to come up with a good guess. Other countries might require some more guesswork, but the principle is the same." ]
Why is there a statute of limitations?	[ "_URL_0_ TL;DR - it's difficult for anyone to defend themselves after 10 years & the motives of pursuing a prosecution after so much time has passed are suspect." ]	[ "I heard it had a lot to do with the invention / discovery of the camera obscura. This helped people understand perspective / proportions / etc better. Here's a quick article I found about it - but there are a ton of others, videos, books, etc that talk about it in more depth. _URL_0_" ]
How fast do neural signals travel in my body?	[ "The speed of a neural signal (more properly: the speed of propagation of an action potential) depends largely upon two things: (1) the diameter of the axon (thicker = faster) and (2) whether the axon is myelinated or not (yes = faster). There's a range of propagation speeds in the nervous system that reflect the...	[ "When you watch a video it only needs to send the video as fast as it needs to in order to play it back. When you download a large file from Steam it attempts to get you the file as quickly as possible." ]
How does phalloplasty give a "female-to-male" transgenre a fully functional penis which can be erect and give him sensations ?	[ "I do not think that \"a fully functional penis\" is what you would end up with at all." ]	[ "We have what's known as a hung parliament. This means that no one party has enough seats in Parliament to form a government. One party needs 326 of their MP's to have the majority and form the government. When no one party has enough MP's to form a government in their own right they can team up with other parties...
Does evolution happen quicker in species with a short life span?	[ "Yes. Organisms like bugs evolve much quicker than mammals, and bacteria evolve even quicker. This is why antibiotic-resistant diseases are such a problem. Humans introduce a threat, the disease respond within a matter of years. People usually believe evolution to take a long time, but it isn't time but number of g...	[ "There's already [evidence](_URL_1_) suggesting a [genetic component](_URL_3_) to human sexuality. I'm not sure that your idea would produce any more powerful evidence, since there are already all sorts of difficulties with mating animals in captivity, which would complicate any attempts to study sexual orientation...
If I buy a house using a mortgage loan, did I really buy the house or did the bank buy the house?	[ "Ignore your buzzkill friend, he's taking a small technicality on your ownership and overexaggerating it. The bank has no right to live in the property, to upgrade or alter the property, or to sell the property unless you default on your loan. And that's what ownership is. All they have on it is a lien or an inter...	[ "The most common business model is just to get as many eyes looking at your site as possible, for whatever reason, and then sell ad-space. Advertisers will pay for people just looking at their adverts, but they'll pay more if people click on those adverts, and they'll pay even more if you can use your knowledge abo...
Why does UK and Portugal have the same time?	[ "> If timezones are determined by your position on the globe Time zones are purely man-made things, and don't always line up the way you might expect. Your position on the globe is just a guideline for determining time zones. And if you look at an actual [timezone map](_URL_0_), you'll see that France and Spain...	[ "Yes, this is called the [Shapiro Delay](_URL_1_). In the Solar System, you can see this from spacecraft messages passing near the Sun ([image](_URL_0_)), or by most of the major planets, Jupiter being the next biggest contributor of course. In addition, when pulses from a pulsar pass by a binary companion ([image]...
How does the Yarkovsky effect not alter the orbits of planets in the solar system?	[ "Because volume of a planet (and thereby mass and inertia) scales faster than its surface area (for photon absorption/emission) as it expands in three dimensions instead of two. Thus even if a larger planet would absorb more momentum, it would have less of an impact because it requires more force to accelerate it. ...	[ "You're right to be confused. It is 100% wrong as depicted in the movie, and a lot of people of wondered about why they made such a grave error considering the rest of the movie was somewhat realistic. It is likely that the reason this happens in the movie is that it makes things more dramatic. Artistic license i...
Why are flies (and other insects) so attracted to garbage and fecal matter?	[ "To flies and other insects thats not garbage and fecal matter but food/a place to lay eggs. One mans trash is another mans pantry/nursery." ]	[ "Dogs have keen enough smell that they can go beyond \"That's poo!\" to \"That's dog poo from a female\" or \"That's dog poo from a dog that eats lots of steak\". But to get the more detailed information, they need to be closer." ]
Why is heart cancer so rare?	[ "Cancer is the abnormal and unstoppable cell growing. Some types of cancer are very common (like prostate cancer) because the cells of that organ are growing continuously. The heart stop growing at a very young age compared to other organs, and the rarer the cells are regenerate, the rarer the type of cancer is. T...	[ "There just aren't a lot of big cities in the same places where tornadoes are common -- it's physically possible, and it does happen, just not often." ]
What is your favorite ancient empire and why?	[ "The Mongols. Not only for the speed and crazy military genius with which they conquered almost all of eurasia, but for their religious pluralism and fostering of global trade." ]	[ "Is there a specific region and time period you are interested in? If not, your question would break our \"poll type\" question rule." ]
What characteristics separate Hominins and early Humans?	[ "I think you'll find that historians are not your only hope; try /r/askanthropology." ]	[ "You know when iTunes, Facebook or your phone updates and how you know it's the same program as before but things have changed slightly and you are kind of lost. Well that's what it would be like going from animals to humans with the errors being death instead of frustration." ]
How did we lose the Ancient Roman invention of "concrete"?	[ "I'd like to be clear that concrete was not lost at any point, and the Romans did not invent it. The particular technology I believe you are speaking of is what is referred to as \"Pozzolan\" concrete, which uses a recipe that found popularity first in Latium (usually accredited to the area around Napoli, specifica...	[ "The Nazi's never had a chance to uncover additional applications. I'm told it's still being worked on in the US by top men. Who? Top. Men. Source: _URL_0_" ]
Responses to Emotion.	[ "It's all about social communication. These responses are ways to communicate our emotions, and possibly therefore the cause of these emotions, to the people around us. They likely existed long before language evolved. Just watch dogs communicate with each other: it's all about the social emotional responses." ]	[ "An ERP is what you use an EEG to measure. 1. Hook person up to EEG 2. Expose person to stimulus 3. Read EEG 4. Note if reading on EEG coincides with timing of stimulus = ERP" ]
How is the internet possible?	[ "There was a framework in place for a computer-based communications system capable of service in the event of catastrophe. When the technological need for the system ceased, a few politicians saw that there was value in preserving what was then dubbed the \"information superhighway.\" They were able to get funding ...	[ "Radio waves, just like we still do today. If you want an example, think about how television worked in the 1940's and 1950's. Take an image and transmit it via radio to a receiver." ]
Why is there a sex offender registry when people that have served their time for murder/manslaughter/other acts of violence don't seem to have something similar?	[ "I remember when groups started advocating for sex offender registrations. The arguments at the time were: 1) the recidivism rate for child molestation was higher than murder but the act just as horrible, 2) There was no cure or treatment for pedophilia so a child molester that did their time was still going to be ...	[ "Imagine you are made of genetic soup. Some people have ingredients that just don't go well together and make the soup taste bad. But that's ok, because when you have a kid, we just take some of my soup and some of my wife's soup and pour it in together. So even though my soup has some bad ingredients, her ingredie...
Why is the US media overly sexualized, but then people are shamed for sexualization?	[ "What sells and what's \"taboo\" are often the same thing. Disease makes medicine sell. Joker makes Batman. It's the oppositional defiance complex of humanity being used as a tool. If someone says \"you can't have that,\" but another says \"here's all of it\" you're going to go take it all. When those people are th...	[ "Hi OP, this is a cultural question, so it would greatly assist anyone considering answering if you could specify which culture you're asking about. For example, the name of a cultural group / country / geographic region, plus a rough time period. Otherwise, this question is simply too broad, as it encompasses almo...
Why do potholes hardly ever happen on highways or freeways when they get far more traffic and less maintenance than streets and side roads?	[ "Highways and freeways are often much thicker than side roads, and made from different materials. Typically, it's about 11 inches of concrete over 20 inches of compacted aggregate. Side roads and surface streets are typically 1.5-3\" thick of asphalt over about 6-10 inches of compacted aggregate. At the end of the ...	[ "I used to work for our local TV station, Ch3 WEAR, in the master control department, and one of our jobs was to prep all commercials ran locally prior to them being loaded into our playlists. So, that meant checking captions, volume levels, run time, etc. If any of these were off by a certain margin, we had to con...
How come when there's a page with five advertisements in .gif form they all load instantly, but a regular gif I actually want to watch takes fifty years to load?	[ "Most likely any gifs made for advertising have been optimized and compressed as much as possible so that their file size is small and thus easy to download. Many of the gifs you see here on reddit are pretty large." ]	[ "Imagine you're trying to find a coffee shop in a city. If you've been there recently, it should be pretty easy to find. If it's been 10 years since you've been to the coffee shop or the city, it might take you a LONG time to find. It also might take long to find if you've been to other, similar coffee shops in the...
Why does Stainless Steel cutlery sometimes get surface rust?	[ "Stainless steel corrodes less easily than carbon steel, but it's not rustproof. If you store it wet, don't clean it, etc., it will eventually rust. Some alloys are more resistant than others." ]	[ "Retailers used a small machine with two rollers that made a carbon copy of your details and those of the retailer on a triplicate carbon copy slip. That is the reason your credit card still has raised lettering in the front. You got one copy, the retailer kept one and the other copy was submitted to the bank for c...
In a type 1a super-nova, what happens to the companion star?	[ "We think that [it gets blown away](_URL_0_). It's also noteworthy that we don't know with certainty what a Type Ia supernova is. We know that it's probably a binary star system, but the nature of the companion star is debated (I think the single-degenerate model is more favored by data than the double-degenerate m...	[ "Awesome question, you’re right that the research about this kinda sucks. If you are good at interpreting/understanding research articles then check this out, if not then I’ll cover the details below so don’t worry: _URL_0_ Generally, research of this nature is done using model organisms, in the case of this study...
Info about 1812's Anglo-american war	[ "For a movie, check out Master and Commander: The Far Side of the World. It gets pretty much everything right, with a few minor exceptions (who owned Valparaiso at the time, etc). Also look into Dean King's A Sea of Words, which is a naval-focused dictionary that plays off the book series that movie is based of...	[ "Read one of the ancient historians like Thucydides, Herodotus, Livy, or Tacitus. I like Thucydides'account of the Peloponnesian war the best." ]
Is the lack of smoking in Downton Abbey realistic?	[ "Most of the interior filming is done in Highclere Castle, aka the Abbey, with the exception of some sets which were built in studio. Considering that most shots are done in actual historical places, it's possible that they aren't allowed to film smoking shots indoors due to the preservation of the houses. However,...	[ "Your answer was removed shortly before you posted this question. It did not meet our standards. We ask that answers in this subreddit be in-depth and comprehensive, and highly suggest that comments include citations for the information. In the future, please take the time to better familiarize yourself with [the ...
Why is the ozone layer thinnest around Antarctica, why is ozone depletion not evenly spread around the world?	[ "From wikipedia: _URL_0_ > Reactions that take place on polar stratospheric clouds (PSCs) play an important role in enhancing ozone depletion. PSCs form more readily in the extreme cold of Antarctic stratosphere. This is why ozone holes first formed, and are deeper, over Antarctica. Early models failed to take PSC...	[ "From _URL_0_ \"... Like Magic Shell, Carvel’s Brown Bonnet chocolate topping instantly forms a hard shell around ice cream. And, just like Magic Shell, one of the main ingredients is coconut oil. Tropical oils, including coconut, are naturally high in saturated fat—consisting of about 90 percent of the stuff. As P...
There is a saying attributed to Alexander the Great that goes along the lines of "he wept, for there were no more worlds to conquer". My question is who originally said this and was the account based on a factual or fictional context?	[ "If I may ask a similar question, what are the origins of the story of Alexander capturing a pirate and asking him something like, \"What makes you think you can just go around stealing ships?\", to which the pirate replied, \"What makes you think you can just go about stealing the whole world?\"" ]	[ "I wasn't able to dig up much on the neurological end, but Marcus Raichle coined the term [\"default mode network\"](_URL_2_) to describe the network of regions in the frontal and parietal cortex that are active when not focused on a directed task. It also transmits electical signals more slowly than the task posit...
When I speak through a glass window do the sound waves pass through it like light or do they cause the window to vibrate similar to a speaker but without amplification causing the muffling of sound?	[ "The glass vibrates, but it is much more solid than air, which results in the dampening effect. What is interesting is that density greatly affects how well the sound travels. Water is denser than air, which is why whale songs can be heard oceans away, yet a jet flying overhead can barely be heard." ]	[ "There's a tube (Eustachian tube) that connects the back of your nasal cavity to inner side of your ears. Normally, it's there to ensure that the pressure inside your ears matches the outside of your ears. When you yawn, your entire mouth/nose area opens up and the sound you hear is because air is rushing past the ...
The difference / relationship between genes and alleles	[ "A gene is a stretch of DNA that codes for a particular protein. Alleles are variations of that gene that code for slightly different proteins. The \"wild-type\" allele is the normal version that most of the population has. Changes from that are mutant alleles. Different alleles don't have to be bad, for example th...	[ "The fossil record: we can look at the bones of animals that died a long time ago, and do special tests to tell us when they died. We can put this together to tell us what an animal, or its ancestor, looked like a long time ago. So far, they have shown up in the correct order. Speciation: say birds are blow...
How does encryption works? For example, if I'm connecting securely to a server, how do the server sends me the encryption key without other people seeing it?	[ "It uses what's called public key encryption. There are two keys, a public key and a private key. The public key is used to encrypt the data, but can't be used to decrypt it. For that, you need the private key. So, it doesn't matter if someone intercepts the public key." ]	[ "If you're talking about video compression, typically it compares differences between each frame and only includes the parts that have changed. In a movie scene with two people talking, most of the background won't change. That means the compression can be higher. Most CGI movies are heavily motion based with stuf...
Who discovered atoms and how they prove it?	[ "It's hard to pin the discovery of atoms to a single person. They were hypothesized by Democritus in ancient Greece, and then again in a more modern form by John Dalton. Albert Einstein is often credited with \"proving\" that atoms existed, when in 1905 he found a way to relate observable properties (how fast thing...	[ "Imagine you grew up flying in a plane. The ground looks like different colors. There's a green area over here, and a brown area over there. When you land for the first time, you're surprised that the green area is actually made up of large trees, and the brown area is made of rocks and shrubs. There are thousands ...
suppose you suggested to a American living 200 years ago, that in all likelihood a black man raised in the same environment as a rich white person would be just as intellectually capable as a typical rich white person. would he have likely conceded to that?	[ "No. Slavery was based on the understood racial inferiority of blacks. Even those who were against slavery were likely to agree that black people were inherently less mentally capable than white people and abolitionists even used the inferiority argument to further their cause. This was based on scientific racism, ...	[ "If the school wants to have the best outcomes, they likely want a mix of very wealthy kids and very smart kids. This breaks down the barriers so that when the very smart kid needs investment and connections, they now have friends that can provide it. It is not fair. But for those that get into ivy league in the...
Why can I hear a radio station in my car that’s 400 miles away?	[ "In the daytime there is a layer in the ionosphere which absorbs AM waves. At night it disappears and another, higher layer remains. It can reflect radio waves back towards Earth. For that reason, many AM stations have to use lower power at night to avoid interfering with other distant stations. Only a few stations...	[ "This sounds like an extreme example of \"Tip of my Tongue\". _URL_0_ I can't really give an overly scientific answer as to what causes it (some interesting articles on that page, though), but I'd imagine that it's just a \"brain fart\", kinda like deja vu. It's a problem with long-term semantic memory recall. (Se...
Why many employers hold your first paycheck	[ "Holding a paycheck is illegal in every state. However, paying in arrears is legal, and that's probably what is actually happening. For instance, they can pay you 2 weeks from today, for the time you worked 2 weeks ago until now." ]	[ "It takes a while to implement the changes. How would you like it if the law changed overnight and you had to pay fees/go to jail next day without having a chance to adapt yet." ]
Could computer scientists create a virus that self-replicates with random mutations to try and induce evolution?	[ "We actually already use [genetic algorithms](_URL_2_), which simulate evolutionary processes, to create better artificial intelligence, often from [connectionist](_URL_0_) systems like [neural networks](_URL_1_). However, these AI are still bad, usually devoted to a single task, such as playing a virtual board gam...	[ "Antiviruses hook system calls to add their verification routines. System calls addresses are stored in the system service dispatch table (SSDT). Simply put, when a program wants to open a file, it tells Windows \"Open file.txt please\", and Windows looks at the SSDT where is the function to open a file, and calls ...
How accurate is this image macro regarding same-sex marriage and the early church?	[ "This is a very controversial hyothesis by John Boswell which has been widely discussed in its time and thus has a big problem of credibility. In my oppinion Richard Hays is right when he claims that Boswells theory is a \"a textbook case of 'eisegesis', the fallacy of reading one's own agenda into a text.\" Hays ...	[ "This submission has been removed because it is [soapboxing](_URL_1_.), [promoting a political agenda, or moralizing](_URL_0_). We don't allow content that does these things because they are detrimental to unbiased and academic discussion of history." ]
why will apple not let me delete their apps from my phone?	[ "With some of those apps, they might have take care of underlying processes in the operating system that could be compromised by their removal. Additionally, Apple is somewhat dedicated to... I guess the best way to put it is give a consistent experience across devices. They feel that is a good way to reinforce th...	[ "Your body doesn't have a very accurate measurement of whether your stomach has been emptied yet. So it keeps trying." ]
What makes a safe crackable or uncrackable?	[ "All safes are crackable. Safes are rated in terms of how many minutes it must take for an experienced person with the right tools (but not the combination/key obviously) to open it, and really good ones are rated for like 60 minutes. The purpose of a safe is not to resist talented burglars indefinitely, it's to re...	[ "Your whole high school is in the gym for an assembly. The presentation comes to an end and everyone needs to leave all at once. If you never open the doors, people will never leave. If you open one door, how long will it take for everyone to leave? If you open all the doors, how long will it take for everyone t...
How can compilation albums (e.g. Now that's what I call music) make money off somebody else's music?	[ "The value add provided by these compilations is mixing and matching tracks from a variety of sources. They pay the original artist $x for the rights to have it on their album. Then they charge you $x+a little bit extra on the compilation album. Depending on the genre compilation albums are a great way to get a doz...	[ "Because books were very expensive in the 18th and 19th centuries and the price of a book was out of the budget for the vast majority of people. Lending libraries existed, but you had to pay for them, too, and many could not afford it. Newspapers were inexpensive enough, and the print small enough, that more people...
How do schools of fish stay in formation so effectively?	[ "Fish have a line that runs along their side, it's a nerve that's very sensitive to pressure changes(can't remember the name now. They can sense when the fish beside them has changed its course even slightly, and react instinctively, as fast as you move to pull your hand away from fire. When the lead fish (plural ...	[ "What about a fly buzzing around? They're not attached to the bus so therefore don't benefit from the momentum of the moving vehicle so why don't they splat into the back of the bus?" ]
Can someone explain how its possible to have negative mass?	[ "Negative inertial mass. The actual mass is still normal. All it really does is behave in the opposite way you'd expect when you push on it." ]	[ "Radioactive nuclides which decay by beta^(+) decay emit positrons. It’s not impossible to synthesize antimatter, it’s pretty easy." ]
Someone once told me that the best time to work out is when you are still sore from your previous workout. is this true?	[ "Hey LeBenji, try asking this question at /r/fitness too as there are lots of smart people there as well. _URL_0_" ]	[ "Two social psychological concepts come to mind here. State dependent memory encoding and Erickson Arousal theory of learning. State dependent learning states that what ever state of mind you are in during encoding is the state of mind where recall would be optimal. Erickson arousal theory states that learning is m...
Why is 12:00 "twelve 'o clock" but 12:30 "twelve thirty"? What is "o clock"?	[ "It's o'clock, not 'o clock, which makes the explanation much more obvious. o' is a contraction of 'of'. (Yes, what a great contraction. 1 syllable to 1 syllable.) A more complete phrasing would be it's twelve of the clock. It's specifying what this '12' is in reference too. Over time it naturally become shortened ...	[ "Ounces are a unit of weight, while cups are a unit of volume. Different materials have different densities (the ratio of weight to volume). For example, pillow stuffing has far fewer ounces per cup than steel. Adding some confusion to the issue, the \"fluid ounce\" is a unit of volume, equal to the volume of one w...
If you run or walk the same distance, do you burn the same amount of calories either way?	[ "Walking is far more efficient than running. Running the same distance burns many more calories." ]	[ "Unless you have surgery - you don't loose fat cells they just shrink. SO the blood vessels would still be in place but having to cover a smaller area. Often leading to varicose veins." ]
If it's bad for the battery for a computer to be plugged in while at 100% charge, why can't the charger detect a full charge and disconnect the power?	[ "It can and does. (Speaking for Lithium-Ion batteries) If it didn't, the battery would overcharge, which would result in the battery failing (possibly catastrophically, read: explosively). What's bad for the battery is remaining at 100% battery for extended periods of time. It can result in the chemicals in the bat...	[ "Well, it's not an unlimited resource. Most likely a very small amount of your electricity comes from wind, hydro, solar, etc. These things are relatively new and require tremendous investment to produce meaningful amounts of energy. The vast majority of electricity in the US comes from coal and natural gas, which...
If computer files can be compressed to be a smaller file size (e.g. zipping a file up), how come the file is not originally created to be a smaller file size?	[ "The same reason your clothes could fit vaccuum sealed into a few small moving boxes, but typically we have them hung loose in the closet. They are easier to manipulate, use, and put back away, and you find paying for more closet space a fair trade off to the time and energy of vacuum packing and unpacking your clo...	[ "Because taxes are complicated, and not all taxes relate to \"commerce\". For example, you pay taxes based on how much you make. But if you do something like donate to charity you have to pay less taxes. If you have an additional child you may end up paying less in taxes. If you get divorced you may have to pay les...
Why is it that when you hit the mouth of a beer bottle from above with another bottle it foams up like crazy?	[ "When you knock the bottle it sends a shock down through the glass. When it hits the bottom it rebounds up through the beer, forcing gas out of solution. The gas wants to leave the bottle, the beer wants to hold on to it, so the gas forces a bunch of beer out. [This](_URL_0_) is a better explanation but is a littl...	[ "You're compressing the air between your hands rapidly, creating a pressure wave. Which is, you know, what sound is. The best, loudest claps involve cupping your hands to trap more air between them. Your hands squeeze that air together before it rapidly expands again out through the gaps between your hands. That ra...
Controlled hunting programs keep species from going extinct? Is this a valid statement?	[ "This claim is potentially true depending on the relevant facts. Normally, the ideal case would be that zero individuals of an endangered species are killed by humans. But perhaps the national parks (and countries) where the species lives are not able to provide the necessary resources to prevent poaching. If a pri...	[ "What do you mean by target?in terms of advertising? It's likely true to some extent,since PP tends to try to help poor people in particular.minorities are more likely to be poor and not have access to proper care. Since that is their audience,they'll will target their ads to help spread awareness as effectively as...
How are the values for electro-negativity determined?	[ "Pauling's idea was that elements with large differences in their electronegativity provides additional stabilization to bonds between those elements. So he quantified it based on the bond dissociation energy (amount of energy added to a molecular bond to make it break apart) of the heteronuclear bond (between two ...	[ "You just have to memorize the chart. There's no trick to it. You should get used to this if you will eventually have to take Organic Chemistry. Here's a [picture](_URL_0_) of the chart to help you out. All you really need to do is figure out how many chemical bonds you have, and how many lone pairs you have, and t...
Would a nerf gun work in space?	[ "Many people posting here haven't actually taken a nerf gun apart and looked at it and are speculating that spring loaded guns could shoot fine in a vaccum. Well, here's a picture of a [maverick](_URL_4_) being taken apart for modding. You can see the spring is pushing on a piston-cylinder assembly. The nozzle on t...	[ "I recommend you repost this to /r/askscience. It's possible that an actual astrophysicist or someone with similar knowledge will give you a very credible answer there." ]
How are stuff from the safe in banks insured, if noone but the owner knows whats inside?	[ "The FDIC doesn't insure safe deposit boxes. If a bank offers insurance on boxes, the premium and cost are based on a dollar value you specify, and pay for out of pocket. They mitigate the claims possible by having strict access control to the boxes, as well as significant safety equipment." ]	[ "Obamacare does contain a provision saying that any insurance policy that existed before it was passed is exempt from its new regulations. However, insurance companies normally change their policies a lot each year, to the point where the regulations recognize them as different policies. Most companies have decid...
POW mail in WWII: were mail ships neutral or was mail routed through neutral countries/states, or...	[ "I believe this was answered in another thread, so to make a long story short, the [Red Cross did most of the leg work of delivering mail to prisoners of war](_URL_0_), at least in the European theater. Mail would be routed through a neutral country such as [Portugal, Switzerland or Sweden] (_URL_1_), then sent on ...	[ "You're going to have to be more specific. Do you mean early church as in St. Thomas? If so, there would be no need to communicate with Rome. They weren't Roman Catholics and the doctrine of Papal primacy hadn't been fully developed yet. If you mean the coming of the Portuguese, they would've worked through a nunci...
How does applying perfume on 'pulse points' of our body help in retaining the fragnance longer?	[ "From my basic understanding, those pulse points help the fragrance to come off as “more strong” due to the heat being emitted from the increased blood flow at those points. This heat makes us feel like the scent lasts longer but it’s the heat intensifying the fragrance. Side note — I like to flip my hair over and ...	[ "> Nothing about it makes sense to me. How does this work? It is simple: Saps pay money for a red LED light and believe any pseudoscientific nonsense that is tossed their way. The scam artist makes a load of money off this fad. Of course it doesn't do anything, there is no evidence that the \"therapy\" works, but t...
What did an "attractive" person look like in your particular time period?	[ "Fidel Castro was something of a sex symbol in Cuba during the early 1960s, that is until it was discovered he had skinny legs which is a major turnoff in Cuba." ]	[ "I heard it had a lot to do with the invention / discovery of the camera obscura. This helped people understand perspective / proportions / etc better. Here's a quick article I found about it - but there are a ton of others, videos, books, etc that talk about it in more depth. _URL_0_" ]
Why did the Saturn V rocket only go to the moon, but Space X's smaller thrust rocket will go to Mars?	[ "Rockets are complicated. Saturn V is a three-stage rocket with 7.8 Mlbs, 1.2 Mlbs, and 0.2 Mlbs thrust. All three stages are used to insert into earth orbit with a significant amount of fuel left over for injecting into a trans-lunar orbit. The SpaceX mars spacecraft is a two stage rocket with 29 to 31 Mlbs for th...	[ "It's like in Mario Kart where if you drive off the side into the mud, the drag slows you down. If you drive back to the road in a perpendicular fashion, you minimize your time in the mud, but you've built up no momentum once you get to the road. If you drive parallel and angle yourself gradually toward the road, y...

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