Split (3)

train · 273k rows

title stringlengths 0 299	text list
3D printing organs.	[ "Ok, this is hard but I will try to make it an ELI5.\n\nWe do not put stem cells in a 3d printers and then it came out an organ.\n\nWhat do is to create a scaffold where the stem cells will attach. This is usually done as a different, completely separate step of the process. I mean that they print the scaffold, t...
Why do lakes freeze but rivers don't, in the same temperature?	[ "Water in lakes is still, so it has time to freeze. Rivers are flowing, so water is constantly moving, making freezing much more difficult.", "The water particles of a river are vibrating more than that of a still lake. Heat is the name for the amount of kinetic energy of the movement (vibration) of particles."...
Why can’t we capitalize numbers like how we capitalize letters?	[ "We do; we just stopped mostly using the “lowercase” numerals.\n\n[This](_URL_0_) is what numerals used to look like. Some typefaces still provide such “old-style numerals” or “text figures” instead of or in addition to the newer “lining figures”.", "There is no point or meaning to do so.\nNumbers are exactly wha...
How/ can people be sentenced to multiple 'life-sentences' in prison?	[ "People are given a sentence for each charge they are guilty of. If you commit 4 murders you can be sentenced to 4 separate life sentences. It's largely redundant but allows prosecutors to stack charges against people and allow justice in each of the cases of the criminals victim.", "Because if you commit 48 crim...
What's the biological purpose of males getting sleepy after ejaculation?	[ "It's about pair bonding. If you fall asleep next to your partner you are likely to wake up next to them. It's to promote bonding.", "I'm not sure this is actually real beyond usually being tired and in bed after sex. Do you know if there's any scientific source?", "I'm not sure this is universal for all males...
How did Dubai become so rich and prosperous so "quickly"	[ "First they discovered oil, then they started selling oil. Then they formed the UAE and aligned with the western world rather than the lunatic dictators in the middle east. they also arranged their city in such a way that made it very attractive for foreigners to do business/live there.\n\ntldr: oil" ]
Why is it when you put room temperature items in a refridgerator, does it seem to make the other items inside less cold over time until everything has cooled down tothe same temperature? Or is this all in my head? (explanation in text)	[ "Technically, things can't give or take \"cold\" from objects, they only give or take heat. Cold is simply the word to describe when something is colder than another thing (usually our hand). Cold objects actually still have a lot of heat in them.\n\nBut anyways, a mini fridge doesn't have very much power, so it ta...
How does color blind glasses (EnChroma) in recent youtube videos fix color blindness?	[ "Enchroma glasses only work for people who are color deficient, not completely color blind. By this I mean, the color cones in their eyes are still functional, but the Red and Green cones (for example) are overlapping in terms of what portion of the color spectrum they are sensitive too. \n\nThese people suffer fro...
How/why did SDCC become so big?	[ "Big things have been happening there over the last few years (reveals of movie trailers, new TV shows, etc.) so it draws more and more attention. \n\nKind of along the lines of Black Friday. More hype every year makes it bigger and draws more people." ]
How can people be allergic to lobster but not other shell fish?	[ "There is more than one type of shellfish allergy. Some people can eat lobster, but not any of the others." ]
Why have they not started issuing social security cards in plastic form like the DMV does with drivers licenses?	[ "Oh god somebody please answer this. I never understood using that damn piece of paper as an item for your I-9 verification. It looks like something a half baked forger can copy.", "The reason I've always heard is so that it will deteriorate more quickly if you ever lose it.", "The reason for this is if you los...
How do some people sleep with their eyes open?	[ "You do not want to learn. I have this, and it's a disease. I have no control over it. I don't even have it severely and have to put a jelly paste in my eyes multiple times a night which is also a pain in the ass in the morning. If I don't put the paste in my eyes I wake up with a horrible burning sensation fro...
Who is a bigger drag on healthcare premiums: The uninsured or the insured sick?	[ "both? neither? In the US you're going to struggle to find someone who actually turns away a person in need of healthcare, even if they're uninsured. They will go the the ER, the ER will process them, and try to bill them for whatever they can. In light of the fact that this uninsured person can't afford insuran...
I understand that in most criminal gangs the leader gets to the top by being ruthless and fearless but it would seem that in mexico regarding the cartels that there would be no shortage of machete wielding psychos to take top spot,so how do these people make it to be the boss of these cartels ?	[ "Really, really depends on the cartel. A lot of the time it's smarts. Who's the man with the plan? Who knows all of the best ways to do things.\n\nMore often than that it's status and networking. Some of these cartels are made up of military and police defectors. Rank carries over. Other times its who knows who: wh...
how does muscle contraction and the sliding and Calcium thing work?	[ "Thats not eli 5 material I think but anyway.\n\nMuscles are bound od something like 2 kinds in planks laid in rows: row of planks a, row of planks b, row of planks a etc etc.\n\nPlanks b have one head at a 90 degrees angle at each ens, towards either the row above or below.\n\nWhen muscles contract those heads bin...
What's the legitimate purpose of a water tower?	[ "It regulates water pressure for an entire area with a single control, by using gravity to create water pressure. You fill up the water tower, and the water coming out of the tower is under pressure from the weight of the water above it. Otherwise you would need to have a pump that keeps the pressure up, and it w...
What gives a person their own unique tone or pitch in their voice, and why are men and women voices so vastly different?	[ "There are actually quite a few factors. The larynx is the primary organ in vocalizing. It's where the vocal chords are located, and different shapes will result in different tones. Men tend to have a larger larynx with longer vocal chords, giving them a deeper voice than women. In addition to the larynx, the shape...
How did someone decide where all the keys went on the common keyboard? Was it random or is there actually a scientific reason behind their placement?	[ "The reason for the QWERTY keyboard we use today goes back to the first mechanical typewriters in the 1860's.\n\nAt first, typewriter keyboards were arranged in alphabetical order, but there were problems--specifically, when quickly typing two letters that were next to each other on the keyboard, the mechanical arm...
what is the difference between body wash and shampoo? If im hairy cant i just use shampoo for my body?	[ "Body wash can be excessive harsh on your hair, stripping it and turning it into straw (dry and unmanageable), Shampoo is gentler, generally, washing out any hair products and environmental buildup without stripping it completely.\n\nYou can use shampoo on your body, but, personally, I've never used a shampoo whose...
How is it legal for a Greyhound bus to allow people to stand up in the middle of the aisle going 65 on the highway when seatbelt laws are so enforced?	[ "[The answer to your question](_URL_0_), and [a story from a kid inside a flipping bus](_URL_1_).", "The reason people get thrown through windshields when they are not wearing seatbelts is that their bodies keep moving even though the car has slowed down or stopped. This is because of inertia, the tendency of obj...
How would a group of people go about starting a Union?	[ "There is a clear cut way to form a union. You would want to either check out the National Labor Relations Act (NLRA) or consult a labor lawyer (labor law means unions, which is different from employment law).\nFirst, you should check out if there are any existing unions for your area of work. If you can get the he...
If Ant Man just shrinks but stays the same mass, how come when he runs on a bad guys weapon it doesn't tilt forward with 150lbs pressing down?	[ "OH SHIT! YOU SIR, youuuuuuuuuuuuu should not say such things if I were you...that is uhhh....very observant of you...does he stay the same mass? So he's just more dense....I feel like that opens a HUGE can of worms for this scientifically...oh well comics, super heroes, what you gonna do", "Seriously? It's becau...
Why was the "Great Potato Famine" so devastating?	[ "There was actually plenty of food there, but England was claiming most of it and having it shipped across the channel. \nOn top of that because of the potato the population was well above what natural sources could provide. Even if you fished the waters till nothing lived it wouldn't be enough food and still probl...
What's the difference between someone who has a learning disability and someone who's just stupid/slow/dumb?	[ "I would think of it in terms of a computer.\n\nStupid or dumb would just be someone with a slow processor. Everything works fine, it just doesn't work that fast.\n\nA learning disability would be a hardware defect. Maybe there is a problem in ram causing a corruption of data... the computer is working perfectly fa...
Why did adding laugh tracks to comedy shows become the norm?	[ "Originally, the shows were filmed before a live audience, or just aired live with an audience, so people got used to the laughter and producers thought that they wouldn't like the silence.\n\nA fair number of modern shows still have the audience, actually. I'm not sure how many actually add a laugh track." ]
Where does a thought go when it's forgotten?	[ "This is actually not too difficult to explain. When you have a thought, the signals are passed via neurotransmitter molecules that travel across the small spaces between the nerve cells. A simple thought can involve hundreds of thousands of neurons. When one of these thoughts are “forgotten”, the neurons... the n...
What makes something Machiavellian and what are some examples?	[ "Machiavelli wrote the Prince, which is a guidebook for political advancement through social climbing, manipulation and what we would now think of as branding or PR, and then instructions on how to consolidate and maintain power once you acquire it. In short, it's a how-to book for scheming your way to individual ...
What is inflation and deflation and why is it bad?	[ "Inflation is when prices over time increase and deflation is when they decrease. Another way to say it is that inflation is currency becoming worth less and deflation is when it becomes worth more. Neither is inherently good or bad. But you can have a stable value of currency too, it's just rare.\n\nSay you have a...
Why don't people run out of air in a submarine?	[ "Modern subs have machines called Electrolysers. Basically, these machines take seawater, and split up the hydrogen and oxygen molecules and the oxygen is then stored in tanks for use. Subs also have scrubbers that remove CO2 and recirculate the oxygen from when we exhale.", "Depends on the submarine. Old subm...
why my helium balloon stops floating after a few days	[ "Helium is an extremely small molecule, it will squeeze out through even the best the seals and through the tiny gaps in the balloon material itself.\n\nEventually enough has escaped that the balloon is no longer buoyant.", "The seal isn't perfect, so regular air gets in and helium gets out over time.", "A ball...
Why does the body wake up starving when it consumes a lot of food before bed, but wakes up fine if it doesn't?	[ "Hunger isn't always regulated by whether you have enough total energy. Other factors such as whether your body thinks its using up a lot of energy affect hunger as well.\n\nWhen you eat late at night, especially something sugary or filled with simple carbs, you get a boost of glucose in your blood before bed. Your...
Why is Sex pleasurable and yet Childbirth is incredibly painful? [Likely to be NSFW]	[ "Sex drive is something all animals share. It's a basic, instinctual thing. Being able to even understand that there's a link between sex and childbirth is a uniquely human thing. Millions of years of evolution aren't going to change just because childbirth becomes unpleasant.\n\n...and the main reason childbi...
National socialism vs Democratic socialism	[ "National socialism is Nazism. Nazi is a sort of acronym for Nationalsozialistische Deutsche Arbeiterpartei or National socialist German workers party. It is all about building a strong centralized state with a unified (aka non-democratic) nation behind it, motivated by racial chauvinism and not really characterize...
Why can't they reuse the water at Fukushima?	[ "They are. \n\nThe problem is water is constantly leaking IN to the facility. So they need to store it or clean it up and discharge it." ]
What does 1 degree Celsius really mean?	[ "One degree Celsius is one hundredth of the span of temperature between the freezing and boiling points of water at sea level.", "it was how Celsius calibrated his thermometer...by setting the lower point (0) at the melting point of water, and the higher point at the boiling point of water (100). then it was a si...
How Redbull racing, an energy drink continues to complely dominate Formula 1. While massive car manufacturers, Mercedes, Ferrari etc can't catch up?	[ "Vettel's car was built by Renault, Red Bull GmbH provides a good portion of the funding but they're working with a major car manufacturer.", "I would also like to know. I think it's because the F1 cars all have to be the same spec engine and mechanically speaking according to the rules. The teams are, however, a...
Why did the US and Soviets continue to expand their stockpiles during the cold war, even after each side had the retaliatory power to obliterate the others' industrial centers many times over?	[ "Most of those nukes were intended to be used to destroy the other's launch sites before they could launch. It's a critical part of nuclear strategy: why are all the silos clustered in a few places in the middle of North Dakota and Montana, for example? But why aren't the all in one big facility, just sort-of sprea...
a company like apple reports profits in the BILLIONS. Where does that go and why are people disapointed?	[ "Let's say you earned $100,000 last year, and you reported you were able to put just $500 of that into savings.\n\n$500 might be a lot to the guy pouring your coffee at Starbucks, but you kind of suck at saving money, and your SO who wants to save up for a house is probably going to be pissed at you.\n\nApple did t...
Why is it that parents go to great lengths to see that their children receive the best education available, yet do not take the time and effort to educate them as well?	[ "Depends on the parent. In my house it's the school's job to teach my kids specific information; it's my job to teach them how that relates to life. So when they learned about the Civil War, we went to Gettysburg. When they read Hatchet we went camping and built campfires with flint. When they learned about we...
how are the intensity and speed of wind related to the time of day? Aka why are winds calmer in the morning and pick up throughout the day?	[ "The sun generates heat and moisture in the atmosphere. Heat changes air pressure and energy. Changes in air pressure can generate wind. \n\nOne of the reasons it’s often coolest just after sunrise as the air above you gets sun and warmth first, starts to rise, and the cool air come in under it to replace it (conve...
How is sound recorded in the grooves of a vinyl record?	[ "Sound is vibrations in air ( or any other medium )\n\nVibrations are picked up by a diaphragm which causes needle to move up and down in the same way to produce the sound frequency wave.\n\nTwo channels are cut out each side at 45 degrees to each other to produce a stereo recording.", "The changes in the grooves...
Why does Starbucks allow people to sit there for a whole day even if they buy little to nothing there?	[ "Others mentioned that the store needs to look full, but the other part is that it makes perfect sense to invite people who will eventually want coffee into your store, instead of only allowing in those who want coffee right now. \nDoesn’t cost much extra cleaning to let people hang around, and now you have a ton o...
How can different instruments play the same note but sound so different?	[ "short answer: [Timbre](_URL_0_)\n\nMusical notes from instruments are not pure sinusoidal waves. The differences in wave shapes produces different sound \"Quality\" or timbre even if the wavelength is the same." ]
Why don't babies get morning breath?	[ "1) they don't have teeth yet/don't eat solid foods yet\n\n2) their mouths stay moist most of the time (a big cause of bad breath is dry mouth) thanks to their natural nose-breathing/drooling \n\n3) every night a magical fairy comes in & fills their mouth w/ Gypsophila, sort of like how your parents leave an air ...
Why do politicians not just choose the best scientifically proven policies based on statistics, instead of bickering about what their ideology tells them, rather than make the choices which will bring most prosperity, safety, opportunities, and happiness to its people according to science?	[ "Well, for one, academics don't always agree.\n\nBut more importantly: because they're running to be elected by people who neither know statistics nor care about it and who would like to hear that a simple, intuitive solution will solve giant complex problems.", "Even if we would have perfect scientific knowledge...
How does the Army National Guard work?	[ "I'm not sure about the requirements such as diploma / GED, but it works like this. I'm going to assume we are talking about an enlisted person, not an officer.\n\nWhen you decide to enlist in the military, you go to a recruiter and tell them that you want to enlist. You have 3 choices. Active duty, Reserves or ...
How is Foxconn able to to operate as it does?	[ "Foxconn factories exist in an entity called a Special Economic Zone where special rules are in place that encourage the production of export goods and foreign investment. Less restrictions means lower costs which makes it very attractive to foreign companies who want to lower costs.\n\nWill such a thing exist in t...
Why is it that whats politically correct sometimes isn't the same as the opinion of the majority?	[ "Let's start off with a statement, society evolves towards increased compassion for all members of society. On the forefront of that evolution is radical thought that tends to be less judgemental of others. For example, native Americans are equal humans (1920s), women are equal humans (1940s), Blacks are equal h...
How can we produce (supposedly) exact figures of the amount of animals remaining of an endangered species?	[ "You mean like, there are x amount of white rhinos left? We pay people to go count them" ]
A matrioska brain	[ "Take a solar-powered calculator, one of those cheap-ass branded demo jobbies that sits on office desks. It uses solar energy to drive a computational engine.\n\nNow take the solar panel and make it a few yards square and add a storage mechanism for the power. After a sunny day, you now have enough power to run a s...
How do natural harmonics on a guitar work?	[ "The sound you hear when a string vibrates is composed of many different frequencies. When you play a harmonic you are isolating one overtone from that range of frequencies. If you divide the length of a string half that is the 12th fret, that harmonic is one octave above the open string. If you divide a string int...
Why is there a little symbol for a link to CandyBox 2 on the bottom left of /r/adviceanimals?	[ "The short of it is because there is a line of HTML in the page source:\n\n < h5 > < a href=\"_URL_2_;\n\nThe < h5 > tag is being formatted by the css file [muRL57ENy-52RGha.css](_URL_1_):\n\n position:fixed;bottom:20px;left:20px;z-index:1000;margin:0;padding:0;text-indent:-99999px;display:block;backgroun...
How does the Obama administration justify removing the tax credit from the college 529 savings plan?	[ "> I realize many middle to low income families don't know about this and therefore don't take advantage of it\n\nThat was pretty much the basis of the argument. 529's are overwhelmingly used by wealthy families, so they labeled it as a tax break for the rich." ]
Why haven't nuclear powered spacecraft become common?	[ "So there are four main categories of practical nuclear energy one can consider for spacecraft using technology that we have in hand today (i.e. no fusion):\n\n* Nuclear reactors as nuclear thermal rockets. This has been [studied extensively](_URL_2_). Basically you run a propellant (i.e. hydrogen) through a hot re...
what stops people from "counterfeiting" digital currencies?	[ "That is the genius of the invention of blockchain currencies. Satoshi Nakamoto developed a \"mining\"/\"proof of work\" system that solves the \"double spending\" problem.\n\nWhen a miner solves a puzzle (it can be a pool of a million individual miners acting as \"one\" miner then splitting the reward), that mine...
How do machines that accept cash payment determine that a five dollar bill is a five dollar bill, etc?	[ "Optical scanning. An optical scanner looks at the denomination Portrait, and other parts of the bill to reduce fraud. Optical scanning is a follow-on from magnetic scanning developed and commercialized by Stanford Research Institute (now SRI International) for bank check clearing automation. Look at the font a...
Counter steering on a motorcycle	[ "Here's how I think about it.. \n\nBecause the bike is moving quickly and heavier than you, you can't exactly muscle the bike into a lean like a bicycle.... so you initially kick the bottom out from under you in the opposite direction to generate the lean you need for the turn. after the lean is generated the bars...
In ancient and medieval times, did people really just kill disabled people?	[ "In some cultures, yes. The disabled can in some cases be an enormous drain on time and resources, to the point of making life much more difficult for others. In a society where resources are extremely limited, the tough choice might be made. In most modern cultures, this is no longer a choice that has to be made."...
Why wouldn't gravity cancel entropy?	[ "If u/taggedjc explained your question correctly, I firstly I want to clear up your misconception of entropy. \n\nFirstly, entropy does NOT mean \"everything gets cold and freezes to a halt\". The heat death of the universe is when the universe reaches thermodynamic equilibrium (maximum entropy) where no thermodyna...
What is the TeV mass scale and what does it have to do with particles beyond the standard model?	[ "Ohh thats my paper! Its a rather old one of course, our latest version is [here](_URL_1_) with a preliminary result [here](_URL_0_). Anyways I feel honour bound to do an ELI5 of it now! Will do my best although its very late in Geneve so appologies if its not clear\n\nFirst, what do we mean by a scale? A scale ref...
If electric fields produce magnetic fields, and our brain/nervous system operates electrically, how do we not have electromagnetic interference disrupting our entire body's operation?	[ "1. The brain/nervous system operates mostly chemically, with electricity being used as a bridge between chemical reaction sites. So it's much less susceptible to this interference than a purely electrical device.\n2. The amount of interference absorbed is low -- notice that your computer and phone, which are e...
How does sunlight fade colors?	[ "Sunlight is a form (or a combination of forms) of radiation. This radiation can excite atoms and break bonds in the molecules which cause colors, effectively fading colors.", "The main thing in sunlight that fades things is the ultraviolet radiation. Most people have heard of this term before. \n\nMany things wi...
Why do people oppose the Trans-Pacific Partnership (TPP)?	[ "> Now, I haven't read the actual agreement (I'm a busy person), and I assume most people haven't either.\n\nNobody has. Because the talks are held in secrecy - which most people think might indicate some funny business going on. Hell, even members of the European Parliament don't have access to recent papers - an...
How does the mars rover send photos to earth?	[ "Yer not alone in askin', and kind strangers have explained:\n\n1. [ELI5: How does the Mars Rover send data(photos) from Mars to Earth? ](_URL_0_)\n1. [ELI5: How do rovers on Mars transmit information, such as pictures and video, back to Earth? ](_URL_3_)\n1. [ELI5: How can NASA receive data and pictures from a Mar...
How is the eye of someone who has 20/20 vision and someone who has, say, 20/15 vision different from one another?	[ "Well 20/20 means that you see at 20 feet what a normal person sees at twenty feet. 20/15 means you see at 20 feet what a normal person can see at 15 feet, so you have better than average vision with 20/15. I don't exactly know why this is but just laying a base for understanding." ]
Why do websites exist that take you from one sketchy set of links and data to another and another and another? Who is this benefitting?	[ "Your attention has commercial value. Every clickbait webpage you visit has some ads on it, and the publisher scores a fraction of a cent income from your visit paid by the advertiser, on the assumption that you notice these ads and there's a fractional chance you might buy the goods or services in question.\n\nTo ...
What do painkillers actually do?	[ "Yer not alone in askin', and kind strangers have explained:\n\n1. [ELI5 : how do painkillers work? ](_URL_3_) ^(_13 comments_)\n1. [ELI5:Why do pain killers help some types of pain, but not others? ](_URL_2_) ^(_4 comments_)\n1. [Do painkillers just \"hide\" an issue that your body was telling you to fix? After yo...
how does currency/money work? If we donate 100 million to a country, it's not like we send a crate of money over	[ "Money is just a representation of value. Bartering, trading stuff directly is inconvenient. So we invented money as a \"value holder\", for example instead of trading my goat for your 100 apples. But I don't want 100 apples at once as they will spoil before I can eat them all. I instead get 100 apple tokens as a p...
How do the different baseball pitches work?	[ "Baseball pitch movement is often based on something called the \"Magnus Effect.\" Essentially, when a ball is thrown with a certain spin, one side of the ball is spinning in the same direction as the ball's movement and the other side is moving in the opposite direction. As a result, opposite sides of the ball a...
Why is French the preferred language for body care products.	[ "I don't have anything to back this up but for the North American audience stuff in French sounds more sophisticated and refined as shown by the use of French to refer to more refined versions of stuff like eateries are called restaurants, underwear is called lingerie, perfume, cologne, rotisserie and so forth" ]
Why is it that double decker buses have only been used in North American for the past decade while they've been used in Europe for more than a century?	[ "lots of low bridges and efficiency are the main reason. A bendy bus can load and unload at twice the speed. \n\nAlso less handicap accessible. \n\nThe ones being use in the US are in very few cities or just for fun. I know the one that started up in Las Vegas, is more for fun than anything else.", "Because there...
What's the controversy with the Dalai Lama? (Specifically within China and Tibet)	[ "Tibet is a territory that's being ruled by China. according to Tibetan religion and law, the Dalai Lama is the spiritual as well as legal ruler of the land. That doesn't jive with China federal government, who want dominating rule over the area. Instead of the Dalai Lama appeasing the Chinese gov and being m...
Why don't actors use actual liquids when pretending to drink in films?	[ "After 20 takes you'll probably be vomiting from drinking too much water, coffee, etc.", "Film continuity is generally the reason; here's a good video to explain it:\n\n_URL_0_\n\nScenes are rarely done in a single take. \n\nSo let's say an actor drinks down to a visible 60% percent of a glass of tea and the take...
How does it feel to have an Orgasm?	[ "you know the jack-in-the-box from when you were a kid? and as you turn the handle slowly the music pings through note after note. Each one slowly leading into the next.......the anticipation of knowing that the next note could be the one where it pops? That feeling of suspense, chills, eager anticip--------ati...
Why does harmony, especially harmony by multiple human voices, sound so pleasurable to our ears?	[ "Harmonies are created when multiple notes are played together and blend to make a sound. Certain notes blend better together due to differences in frequencies. There is a mathematical method to finding those notes. Notes that blend well together create they create a sound that is unified or consonant, while notes ...
How come uninstalling is faster than installing softwares/video games?	[ "The answer is pretty simple: When you install, you have to write all of the files in their entirety and decompress them from how they're stored in the installer, then make records of all the files and potentially entries in common places to tell the operating system how to reference specific files.\n\nWhen you uni...
How do you develop the ability to perform a backflip? How do you practice?	[ "Trial and error is the way, but they usually practice this with a 2nd person catching them if they go head-down to the ground or they give them an extra push to make the whole flip. Another option which is sometimes used at sports clubs is a chassis. It looks like climbing gear and swing combined. The ropes are el...
How do you "clean up" a harbor?	[ "First you stop pumping fresh shit into it. Second you remove all the built up shit off the bottom and sides. Then you wait for the tides to exchange the water. Redo the side cleaning process as necessary until the harbor water is now as clean as the overall ocean." ]
Why is gas so expensive?	[ "The price is set largely by OPEC (a group of Oil Producing Countries), they say how much they want to charge per barrel of oil and it becomes the price. They could produce more and drive the price down but all the big oil producing countries agree to only produce so much to keep the price up.\n\nNeither Canada nor...
What is exactly is a "gut feeling"?	[ "It's pretty much intuition. Many people feel this in their gut. You aren't sure why, but you \"feel\" like you know the answer. I usually feel a tingle behind my right eye, but sometimes feel a sensation in my abdomen. I'm speculating that this feeling has to do with release of adrenaline into the blood system. Ad...
Why does most of the land mass lie north of the equator?	[ "\"Land mass\" is a bit of a misleading concept when discussing planetary geology, and particularly in regards to the formation of a planet's surface, as what you are really referring to is merely the exposed planetary surface not submerged under water. It has a lot of significance for us, but in that realm of scie...
Why is the term "socialist" a dirty word in American politics?	[ "In most Americans' eyes, socialism is irreversibly tied to communism, which is synonymous with the Soviet Union, the US' geopolitical rival for most of the latter half of the 20th century. The USSR was communist, and also socialist, so both have always had a bad connotation. Most people don't understand that you c...
why popular american fast food and snack brands are found nearly all over the world but we never see any popular foreign fast food and snack brands here?	[ "You may not be aware that some snack brands are foreign because you grew up with them. For instance, Nestle' is a Swiss company that licenses the Kit Kat bar, invented in England, to the Hershey company.\n\nProbably the largest foreign fast food place in the U.S. is Tim Horton's which is a Canadian doughnut resta...
How does the US have the most powerful military in the world if less than 1% of the population joins the military?	[ "1% of the US population is still a hell of a lot of people.", "Technology. Even China is FAR behind the United States when it comes to military technology. We also still have a military oriented culture, we are not lacking in troops. Even if we were, we have the draft for war time.\nThe largest air force in the ...
how to game advertisements that use false gameplay mechanics (ex: mobiles games) in commercials get away with it	[ "There will be a small disclaimer that says \"not actual gameplay\" or a simiiliar phrase (this isnt just games, a huge amount of commercials and industries use \"fake\" stuff to display their goods and all have some type of small disclaimer). Even if there wasn't it would almost certainly be understood by an aver...
Why is it so difficult to be fired from a job working for the state (in US)?	[ "There are 2 main reasons for the protections awarded to State Workers and public servants : \n1) To protect them from political interference. Since they can't be fired, they do not have to obey unlawful orders. Political power can't put too much pressure on them because ultimately, they will outlast the political ...
why is antibiotics prescribed for flu?	[ "Antibiotics are not (supposed to be) prescribed for influenza. It's possible that this is a case of a bacterial infection that a patient mistakenly called \"the flu\", when it wasn't actually the flu. It's also possible that the doctor prescribed antibiotics because the patient demanded it, and they didn't wan...
why aren't police officers in the UK allowed to carry guns?	[ "In the US, regular beat officers are allowed to carry handguns, but not sniper rifles and submachine guns; those are reserved for SWAT teams. \n\nIn the UK, regular beat officers are allowed to carry batons and pepper spray, but not guns; those are reserved for special gun-carrying teams.\n\nIn both countries, it'...
How 5 hour energy actually makes you stay awake	[ "Most notably caffeine. It's fine if you do it infrequently but if you make a habit out of it (or coffee or any other source of caffeine) it'll no longer help wake you up, it'll just get you to normal. Your body learns to adjust to what it consumes so it'll wind itself down if it's expecting caffeine. \n\nIf it's j...
If I eat a lot before going to sleep, why do I wake up hungry?	[ "I am on board with you mate. I experience the same thing. You would think that since you ate more recently (and supposedly your metabolism slows down when you are sleeping) that you should be less hungry than if you went to bed on an empty stomach. \n*\nI would add as a followup question: Why am I NOT hungry when ...
How does a Tornado Intercept Vehicle avoid being sucked up into the air?	[ "Some of them have pneumatically-operated spikes that they drive into the pavement when contact with a tornado is imminent.", "One major factor is avoiding getting any significant wind under them in the first place. Lowering shielding very close or even onto the ground will deflect the air up and over the vehicle...
Radio waves and how they send information.	[ "> Are there two separate waves?\n\nSort of. That 96.5 MHz wave is what is called a carrier wave.\n\nIt is combined with the wave that carries the audio wave, and they your receiver subtracts out the carrier frequency, leaving only the audio. This process is called modulation.\n\nThere are two common forms of mo...
How the "mob mentality" works?	[ "Lets say you're on a playground.\n\nThere's a group of people who are playing dodgeball. Its a pretty small group at first, but there are a few more of them, and then a few more. Pretty soon, a lot of people are playing dodgeball.\n\nBut you aren't, and as that group gets bigger, you start to feel left out. You sh...
Why does an automobile depreciate in value the minute you drive off the lot?	[ "Let's say a brand new Ford Focus costs $16,000. \n\nWould you be willing to pay $16,000 for a Focus that someone bought, drove around for a little bit, and then returned for some reason.\n\nThe average consumer is always going to choose the new car over the slightly used car, so dealerships are going to have to of...
How your voice sounds different to yourself when you talk versus when you hear your voice in a recording.	[ "So, when you talk, you hear the sound waves traveling through your skull and into your ears. Other people, or recordings, just hear the sound waves that travel through the air.\n\nAs such, you hear your voice differently because you're hearing it filtered through your skull." ]
Why is radiation so damaging as it is?	[ "You are a very complex controlled chemical reaction.\n\nIonization causes different reactions and products than are supposed to be inside you.", "Radiation causes ionization, which in turn physically damages cell structures. Most cells, when damaged, kill themselves - ona alarge scale, obviously, that's bad for...
What happens to the foreign objects in our eyes when we rub them until the discomfort is gone?	[ "'Twas oft asked here. Ye may enjoy these:\n\n\n1. [ELI5: What happens to stuff that gets in your eye and disappears behind your eyeball? ](_URL_3_)\n1. [ELI5: What happens when something goes into my eye and I'm unable to find/pull it out? ](_URL_1_)\n1. [ELI5: What happens to eye lashes and where do they go when ...
Why do advertisers hold so much power? A lot of sites like Reddit are trying to be "advertiser friendly", to make money, but do advertisements really pay that much? Are ads really so useful to to the company that they will splash that much money?	[ "For many entertainment platforms, advertisers are the only source of income, or the extreme majority of their income.\n\nIf the advertisers are unhappy, than there is no money, than there is no show/website/ect." ]
Given the emphasis placed on the separation of the three pillars of the American government, how can the president grant pardons? Is this not the executive messing with the judiciary?	[ "It's built on checks and balances, not separation. Each branch can limit the other branches so no one branch is all powerful. \n\nCongress passes laws. The President can veto but Congress can override. The Supreme Court can overturn laws passed by Congress. See how everyone can check (or limit) the other branches?...
How is it possible for a person who was born deaf to understand spoken language the moment their cochlear implants are turned on?	[ "The video you linked is somewhat misleading. The woman is \"deaf\", not deaf. By which I mean that she was severely hearing impaired to the point that she is classified as deaf, but could hear (poorly) with hearing aids. In other words, she was never completely unable to hear. Thus she could understand Engl...

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