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Do we need to sweat to be healthy? | Sweating is a multi-faceted process which has multiple benefits. The most apparent ones are releasing chemical ions, releasing hormones, removing waste, reducing temperature, and research is showing that it may be useful for mating behaviors. If you don't sweat, you lose all these benefits. Your body has other collecti... |
Why do countries which aren't even at war, spend billions upon billions of dollars every year to fund the military | You can't form a military while you are bing attacked. You have to maintain one at all times and that costs money. |
How do military aircraft war games work? | Don't forget they also test the ground crews. Who can put the most planes in the air the safest and most efficient way possible often wins the war. Having the better ground crews also input into the final scores. |
Why restaurants have policies to throw out food at the end of the day instead of donating/eating it? | i'd add that some places throw out food instead of donating because they don't want to foster dependency. a friend of mine used to run a sub shop and at the end of the night he noticed a few homeless guys regularly swung by. at first he gave them whatever was left over but over time they got used to it and he felt bad ... |
Why does time seem to move faster when you are doing something enjoyable rather than doing something boring or that you don't want to do? | Comment from me on [another ELI5] that seemed to go unnoticed. > I think its just perception/expectation.When you are young, like 10, all you wanted was to get to maybe 18 to have your pubes/sex and whatnot. So, you expected time to move faster than its normal rate but since time is constant and can't move faster, to y... |
How can a rocket go fast enough to leave earth, slow down enough to land on the moon, then repeat that process the other way, all without running out of fuel | With lots and lots of fuel. It also helped that the Saturn/Apollo rockets left behind all the bits they didn't need, like empty fuel tanks and the hugely powerful rocket engines needed to lift all the fuel off the ground, once they had been used up.By being very careful and planning the trip very well. First you would ... |
What is "soft capping" and why is it screwing up the "freshness" of Reddit's front page? | Preferences > link options Deselect: show the spotlight box, show trending subreddits on the front page, show me links I've recently viewed. I default to the *rising* tab |
How does real colour get converted to black and white, and can it be reversed? | You'll never get the colour information back once you've gone to black and white. You might have a really nice measure of the tone and we can infer a lot of stuff to be able to make a *fairly* accurate reproduction, but you will have to rely on other information or artistic license to complete the image. |
Why doesn't America makes houses with concrete like rest of the world does? | We do. All the time. It just costs more and takes longer to build than a wood-frame structure. My house is concrete block walls with concrete slab floor, and I've seen some made with poured concrete forms for the walls on a concrete slab. During the building booms in the early 2000's, especially here in Florida, you co... |
Why hasn't Bill Cosby been arrested? | Most of the women who've come forward have allegation dating back to the 1970s or 1980s, and I believe the statute of limitations has run out. If Cosby did have a historical pattern of committing these offences, it is possible that he stopped committing them as he became older and his sex drive diminished. So there may... |
how the English words for Hungary, Germany, Japan etc. are so far removed from the native language? | the other people" for neighbouring countries. The name "Japan" supposedly comes from the name of the country in a particular dialect [source] These days, of course, when a country is named, the whole world hears about it first hand and so there generally isn't a multitude of very different names for the country around ... |
The backstory behind the Elder Scrolls games. | I cannot in any way help you understand the backstory, but just know this: Every game has it's own storyline. The basics usually get rehashed, but read up on the races if you're really interested. In the games, there are books , but if you're interested in the back story, try to find the various history books on booksh... |
Why is it legal that I can google an US citizen and find out he or she was arrested for something? | > I am asking why there is basically an online pillory for misdemeanors. Because public records + public trials + free speech > In Germany for example [ ] Europe, as a whole, doesn't have the same belief in free speech that Americans do. Americans believe in the enlightenment-based philosophy of free speech 'even when ... |
What exactly does Google do with my information? | It builds a profile of what makes you tick as a person in order to be better at selling you things. Someone told me a nice anecdote about a large corporation that tracked it's customer credit cards across a number of different store franchises that all belonged to the corporation. Supermarkets, clothing stores, drug st... |
Is it theoretically possible that our vitamin D production from the sun is a small, minuscule step in evolution towards wider nutrition gains via some process that resembles photosynthesis? | That would be highly improbable, evolution doesn't make baby-steps towards a goal, it just randomly rearranges molecules. Also we humans actually lost our ability to generate vitamin C, so I would argue the opposite. We are no longer dependent on our own internal chemistry for vitamins, we can exploit the environment w... |
Why do athletes make significantly more money than people like the president who have greater responsibilities in society? | To attempt to answer your question, you would have to assume that people get paid based on their contributions/responsibilities to society. That isn't true. At all. Nor has it actually ever been true in the history of human civilization, except maybe in something Karl Marx wrote in a letter. |
Why do we naturally have a tendency to smell our hands after scratching near our sweaty nether regions? And why is the scent of ball-sweat so unique? | I don't know, but I wear a night brace to stretch my hand out after surgery and my sweaty hand smells an awful lot like ballsack in the morning. It must be that there's not any air flow under the plastic brace and that traps the sweat in.I was just wondering the same thing last night when I saw my fiance scratch his ba... |
What is Google's new parent company Alphabet? | Google has it's fingers in a whole lots of pies. Only some of them are even tangentially related to their core search/advertising business. Alphabet will allow them to move those non-related businesses out from under the Google umbrella and instead be run as independent entities underneath Alphabet. The core search/ad ... |
Why/How do beards grow faster after they've been shaved? | I'm pretty sure that's a myth, I think it's just because the hair has a sharp end and is a uniform length |
Why do advertisements in non-English speaking sports arenas still spell out in English words? | Don't know if this is applicable to your experience, but many of the ads that seem to be on the sidelines on sports arenas are actually digitally added to the broadcast, meaning they could presumably be tailored by different channels/broadcasters.At some point the brands become so big and well known that by virtue of t... |
Why is an iPad cheaper than an iPhone? | Capitalism. The price for your product is as much as people are willing to pay. People are willing to pay more for a phone than for a tablet, and therefore they can drive the prices higher. However, it's also true that miniaturization is expensive, and making efficient and tiny components for a phone is more expensive ... |
How does cryonic preservation work? Seems like they do it only on already dead people. Shouldn't they be alive when preserved for the operation to be successful? | They can't do it on live humans because it's illegal to freeze a living person. The people who signed up for it and/or are currently frozen by it are gambling that hopefully in the next 100 years we'll have the technology to revive frozen dead cells. pretty big gamble if you ask me xD |
Why does the clouds from an atomic blast look like a mushroom? | The cloud from *any* large explosion, and many smaller ones, will be mushroom-shaped. To grossly simplify: What happens is, the explosion releases an enormous amount of heat into the air immediately surrounding the bomb. That heat causes this mass of air to expand, and to rise. The rising air creates a low pressure are... |
How come when you tilt your head sideways you can still read words and everything looks normal, but if you're upside down everything becomes upside down. Why doesn't the world become sideways? | You can learn to read upside down. The easiest thing to do is read right-side up. A slight inclination doesn't take much compensation. Upside-down means you have to read right-to-left and the letters are completely reversed, so it's a little harder.You have muscles called the superior and inferior oblique that rotate y... |
How has bacteria in the mouth not become resistant to toothpaste and mouthwash? (Such as drug resistant bacteria?) | Bacteria become resistant to antibiotics. Mouthwash and toothpaste are not antibiotics, they contain fluoride which works by strengthening your teeth. Essentially you're just washing the bacteria away so there's nothing to become resistant to. |
What is the controversy over GMOs? | Basically, some people think they're safe because they won't typically kill you outright. On the other hand, they might give you cancer in 30 years but we haven't been eating them long enough to know for sure. |
If both hydrogen and oxygen are flammable, then how is water not flammable as well? | Some good answers here. Here's an attempt in dumber language: Water is basically burnt hydrogen. When you burn hydrogen, it combines with oxygen and water is the result. So it is not flammable for the same reason that ashes are not flammable even though wood is.Oxygen is not "flammable". when something is flammable tha... |
why does it take so long for us to learn which side is "left" and which side is "right"? | I didn't think it takes particularly long but anyway, there is a difference between objective learning and conceptual learning. Left isn't a thing. It's a concept. And children's developing brains need a bit of exercise before fully grasping and utilizing conceptual knowledge. |
Why is it women's clothing tends to go in six month fashion trends (if not more frequent) but Men's clothes basically... don't? | Women's clothing trends go much faster than 6 months, once upon a time it was based on the seasons. Now its rushing the styles out the door as fast as possible - which can be weekly or multiple times each [week]. Worked in women's fashion retail and in big box retail. |
How storage companies like Dropbox keep files safe if all of your files are stored in one gigantic cluster that other users use | It's kinda like the safe deposit boxes or PO boxes, they're all hosted in one place but users have their own lock. The hosting place might have a back door for all but there are secure policies to avoid misuse, |
why do people naturally dislike the taste of some food? | I think it's very much a nurtured effect, although I only have anecdotal examples. I personally will eat almost anything, except I used to have a great dislike for cherry tomatoes since I prefer my tomatoes tasting like most tomatoes: less sweet. Disliked them enough that I would spit them out and wash out the lingerin... |
What happens if you give out your social security number? | Imagine one day you wake up and everyone in our neighborhood has magically turned in to an exact copy of your Mom. They look the same, talk the same, and so on except for one thing - their brains. Your real Mom still has all her memories intact. Now, how will you figure out who the real Mom is? Easy - the memories! Jus... |
Why is there so much conflict between India and Pakistan? | Because racism, religion and old tensions that colonial powers just inflamed before they arbitrarily chopped up the region and split Edit: that's the tldr version. After talking with Indian friends it's obviously far more complicated than that |
What is the purpose of truck weigh stations along the US interstate highways, and why are they seemingly always closed? | The weight limits boil down to pounds per square inch of tire meeting the road surface. Wider tires get higher limits in some states but are not allowed or not considered in others. D.O.T. has simplified the rules so that trucks can be built and equipped to easily operate over state lines. Texas uses lots of concrete i... |
Why is it that dogs are categorized by breed where cats are categorized by fur if at all? | Because we have been breeding dogs a lot longer than we have been breeding cats. Most indications are that dog domestication goes back tens of thousands of years; and breeding goes back as far as history . This has given us a lot of time to select for a lot of different traits. In contrast, cats didn't get domesticated... |
Why do companies expect people to give 2 weeks notice before quitting but won't give 2 weeks notice before firing or laying people off? | Many companies do give you warning before laying you off, but it depends on corporate culture. If you're fired, it's generally because you did something bad, and in that case you didn't earn a warning. If you did something really bad like threaten someone, they want you gone immediately. You're not actually required to... |
Tesla's sale banned in New Jersey and other states. | Why doesn't Telsa just sell through a dealer in these states and if people complain about the higher prices they can blame the government? |
Why do cigarettes contain all of those absurd chemicals and toxins? | Tobacco being a nightshade grows a lot of its own nasty protective chemicals. Add to that the fact that tobacco farmers treat the growing plants with, fertilizer, pesticides, herbicides, and fungicides which in turn gets absorbed into the leaves and roots. Finally you have tobacco companies processing it and adding add... |
Why do basketball players wear such long shorts? Why are they passed their knees? Shouldn't they be shorter since it would be easier to run with shorter shorts. | It's purely aesthetic. Uniforms have changed throughout the history of the game, and for whatever reason, longer shorts and heavier jerseys are what players wear now. The bagginess isn't going to make a difference with the type of movement involved in basketball, wind resistance is almost meaningless. Though obviously ... |
Why have voter ID laws generated so much controversy? | One arguement thread goes along the lines of: the poorer and more marginalized of society don't and/or can't get valid state-issued photo IDs, so an ID requirement to vote would disenfranchise these people. |
How bad is sugar for you/your body? | Sugar is very important to your body. It provides a quick-burning source of energy that is essential when we are active. Problem is, it's addictive and delicious and so companies started putting it in everything under the sun. Combine that with the fact that most people sit at a desk in front of a computer all day. Now... |
What exactly happens to your heart when you have to inject it with an adrenaline shot? | Always seems huge? Do you work in a hospital that does this regularly? I've never seen this outside of pulp fiction. Pericardiocentesis is a completely different procedure if that's what you're referring to.Is it just me, or has r/ELI5 turned into - "Hey, I have a question; will you google this for me?" |
"Secret menu" options at fast food restaurants, why are they a secretly and what is the secret? What's the point of hiding some things? | I worked in fast food for two years and a lot of it was just items that were rarely ordered so we didn't advertise them. The rarest items I can think of were the Nachos that Wendy's carried and the frozen coke float Burger king had |
How do celebrities tweet and reply to other celebrities on Twitter considering there are thousands of people tweeting them as well? | There are services and software you can use with twitter to let you know when a certain user tweets you or posts a tweet, chances are most celebrities don't even see their fans tweets unless a pr person alerts them to one they should reply to. |
Why does the period table end at atomic number 103? Why can't there be elements with higher atomic numbers? | There are elements above 103. Right now it goes up to 118. But the reason it doesn't go higher is 'cause we just haven't discovered or been able to create those elements as of yet. Also, the higher you get the more unstable you get. Elements in the hundreds can generally only exist for a few seconds before they decay i... |
do other primates recognize humans as being similar in likeness to them? | Not really. At a young age they see no difference but as the primates grow, they realize they are stronger or different. I read somewhere that chimps cannot be used in film/commercials or really let out of their cage, after the age of seven because they realize that they are much stronger than humans. Then they decide ... |
How are the people in shows like "Moonshiners" protected from the law? | Most of those shows are completely fake. I'm in the repo business - the repo shows I've seen were ridiculous. It isn't legal to run around causing confrontations with people like they do; you'd get sued out of business. The people in the shows are all actors; the whole thing is created from whole cloth.not illegal to m... |
Why do people walk with their shoulders shrugged when it rains? | May or may not be relevant - but the large surface area of your back will always feel the greatest degree of temperature which is why when you get out of bath or shower in cold bathroom you should always vigorously rub and dry your back first as it will noticeably decrease the unpleasantness.Whilst contra wise the idea... |
If you were flying in a jet that broke the sound barrier, would it be completely quiet afterward because the sound is behind you? | No sir. Sound travels through air. Assuming you're travelling in a closed cockpit the air in the cockpit is moving at the same speed as the plane and yourself. Since there is no relative motion, it's like you are at rest compared to the air, and so you could speak/hear everything normally. Sound through air is similar ... |
Why do birds move their heads around to look, in quick 'jerking' motions, and not smoothly like human and animals? | At least partially because their eyes can't move like ours, they are fixed. It's also to do with the muscle tissue. The difference is interestingly what makes red meat red. The red colour comes from a protein that helps with extended muscle use, which is why heavier animals usually have red meat, because they need to c... |
Why don’t money bills get wet and ruined by water? | In the UK Money is now made of plastic. It's actually brilliant since I have laundered my money a few times accidentally. |
Why is meat more satiating than vegetarian food? | Protein and fat are more satiating and for a longer period of time than carbohydrates, and different people's bodies react differently to various proportions of them. Animal-based proteins tend to digest more fully, too, so your body can use more of it. Most likely the vegetarian foods you're eating were too low in cal... |
Did the dinosaurus really go extinct because of a meteor? | So there's an entire layer of a certain mineral that supposedly came from a meteorite all around the earth's crust. The layer of mineral can be found in all different parts of the world, and the mineral is all dated back to the same time period. So yes, a meteorite did hit earth and yes it likely put several species to... |
Why Do the Bloods Hate the Crips? | they're the competition, every person who buys crack/weed/stolen car/whatever off a crip is someone who isn't giving money to the bloods. Each member might have individual reasons, had friends who got killed by the other gang or whatever, but I think the main reason it keeps going is just money. |
Why have the "new" ketchup packets not replaced the small, messy ones? | The only place I've seen the former dead horse packages is at mult-national chains, like Maccas. We get sauce in packages like [this] , or like [this] |
how does breaking someone's neck supposedly kill them immediately? | Short answer: it doesn't. That's just a movie thing. Longer answer: just breaking your neck bones will not kill you. But severely damaging your spinal cord is a strong possibility with a broken neck, and can be fatal in a couple of ways. Severing the spinal cord separates the brain from the body below the level of the ... |
Why did the invention of the cotton gin increase the demand for slaves and not decrease demand? | If memory serves, the whole industry was dying because it wasn't economical, but the cotton gin actually made it a viable business again and so it started back up. |
The controversy surrounding GMO. | People are concerned about what they put in their mouth. That sounds sensible, but concerns about GM seem to be blown out of all proportion compared to other things that are surely less healthy, like the additives and sugar content in some drinks. People say that genetic modification is unpredictable, although this cou... |
Why does putting a plastic bag over magnetic strips help them read? | For most cards, the thickness wears down before the content on the mag-strip. This means they don't push up against the reader consistently enough. Add some thickness, problem solved. |
Why can't we find the volume of a sphere by integrating cone elements? | Limits are tricky. To give a simple example: Imagine a square of side 1 unit. If you draw a path from the bottom left to the right, along the edges of the square the length is 2 units. Now, instead, draw a small staircase by going, say, 0.01 of a unit to the right, then 0.01 of a unit up to the diagonal, then 0.01 of a... |
Why am I miserable when the temperatur rises 10º, but I can take a hot shower for 10 minutes and it feels great the entire time? | Have you ever stayed in a hot shower for too long, and become overheated? It is possible for warm water to feel too warm after a while. You probably enjoy hot showers for a few reasons: 1. Hot water can be directed to relax stiff muscles, so you are overall relaxed. 2. Hot water cleans better than cold water, so you ar... |
why 'being independent' is such a desired quality in American culture? | Independence leads to new ideas, and the freedom to pursue those ideas. That, can lead anywhere, and that's exciting. |
why are tropical fish so bright and colorful | In many cases, it's because looking pretty attracts a mate. This is certainly the case for guppies, for example. It can also help with species recognition. Also, they aren't _all_ that pretty, but the pretty ones are the ones people get for aquariums and take pictures of. |
Can your mind function driving a vehicle on auto-pilot? | This has happened to me before, and is partly why I'm glad that NYC has such good public transit. It scares the shit out of me when I drive, and I haven't found a surefire way to deal with it. I believe that what happens is the sub-conscious takes over, somewhat. I've 'snapped' back when something is happening that req... |
Why do pharmaceutical companies air commercials for prescription drugs when laypeople can't actually directly buy these products? | This doesn't happen in the EU, and is banned by law across the entire bloc. It is, as far as I can remember, banned in most countries except for the US and one or two others. The reason for it happening is twofold. Firstly, patients request particular drugs from their doctors if it is advertised directly to them. Even ... |
How correct is the Zeitgeist movie? Are the facts stated true? | A LOT of the things stated are altered to better fit the narrative. Some key points are unfortunately fundamentally wrong. [This] is one of the better debunks I've read about the matter.Retelling of older stories might be a big word, but yeah the religious stories we know now have evolved from older stories, which in t... |
How come every week there seems to be ground breaking development on defeating cancer but it falls off the face of the earth the following week? | I've noticed this with renewable energy technology as well, especially photovoltaics. It seems like every few years someone discovers a method of making a radically cheaper PV cell with 80% efficiency but they never seem to make it to production. |
Why do bottles shatter when you hit the top of the bottle with your hand? | Remember watching a video from thebackyard scientist and Mark Rober about that. Apparently it works better with warm non-carbonated beverages but a vacuum forms at the bottle and pushed all the pressure downwards iirc. I would go watch the [video] as I'm probably forgetting something. |
- Why I was blond till I was 5, but now have dark brown hair, and why my beard is dark brown while short, but turns redish as it grows longer | well, I don't have a beard for I am a lady, but I was blonde until roughly 5 too then my hair became gradually darker, my eyes are a sort of mixture of blue, green and grey, changing according to the weather apparently. The point of my comment? If you got an answer, I'd like to read it. Maybe we all share a common orig... |
If I fired a modern sniper rifle in outer space, would I have to throw out everything I learned in sniper school, or would anything carry over? | Small end points at the bad guy. Pull the little hook thing to make it go bang. Don't worry about wind. Fall due to gravity will depend where you are in space. Barrel will probably overheat because there's no air to remove heat via convection. |
How come countries in the northern hemisphere seem much colder than countries in the southern hemisphere at roughly the same distance from the equator? | Because your sense of the equator's location is off. Excluding Antarctica, there is almost no land as far south as, say, England is north. |
as we get older, why do we stop crying from pain? | Because we know what's going on and we don't feel the need to ask for help. As a child, you don't know what is causing your pain, or perhaps you don't understand what pain is in the first place. The only thing you can do is scream for help, and crying is a natural way to call for help.\r\rThen, as we get older we under... |
the difference between the apocalypse, armageddon, ragnarok, end time, judgment day, rapture | * [apocalypse] is an Amarr standard battleship known for its laser bonuses.* [armageddon] is another Amarr standard battleship with a focus on drones.* [ragnarok] is the titan class ship of the Minmatar fleet. It's power is greatly feared throughout the universe.* end time - sorry, never heard of this ship.* judgment d... |
When somebody makes eye contact with themselves in a mirror and moves their head around, what causes their eyes to remain in the same position? | The person's ability to track motion and their eye muscles changing the angle of the eyes as they move around in order to continue looking at the image that has their attention. |
when and why did war tactics change from colonial times when men would just march up, take turns firing at each other, and just stand there waiting to be shot? | A well trained regiment didn't fight that way. The front line fired, dropped to one knee and began reloading while the second line stepped forward and fired and dropped to one knee and began reloading. The third line steps forward and by the time they have fired and dropped to one knee, the first line was ready to step... |
When airports say that items may be "destroyed", how do they actually destroy them? | By throwing them away, or auctioning them, or whatever. The point is that those confiscated items *will not be returned to you*. So, as far as you're concerned, they've been destroyed. |
why is Greenland not its own continent? | In addition to the other reasons already given, Greenland [shares a continental plate] with the rest of North America. While their dry land is separated by ocean, geologically they're one and the same. |
Why was the "Pavlov's dogs" experiment significant enough to warrant a Nobel prize? Hadn't people been training dogs and other animals for thousands of years before? | It wasn't about training dogs. It was about showing that an unconditional response could be generated from a conditional stimulus . |
Why is suddenly considered modern to design websites / software in this flat style, even though it's technically less advanced? | Designers are sick of doing rounded curves, gradients and those fucking reflections on everything. Flat designs are them rebelling against what's been hot for the last 5-10 years. |
Why do animals like being stroked so much more than humans? | Uh, humans like to be stroked, but mainly by lovers. Lots of animals don't like to be stroked, i.e. most wild animals. It is likely that humans deliberately bred domestic animals that like stroking because that comes with being less violent and wild. |
why are 100s (longer cigarettes), the same price as regular length cigarettes? | They have a different diameter and the filter is a different length. Likewise, cigarettes in boxes are shorter than the same thing in soft pack… but I'm not sure if they make soft packs anymore.Actually there is not a difference. King size cigarettes have a larger circumfrence. 100s are longer. The difference is subtle... |
Confederate flags. Why do people still fly these flags? What exactly are they supporting? | I do not fly the Confederate flag- I know how it is received and do not want to convey the idea that I believe on those inferences. But dang if I don't love that symbol and the fact that I cannot show my pride in my ancestors by way of it hurts me a great deal. I love my southern history and I *especially* love my sout... |
How do college majors and minors work? | A major is a students main field of study. A minor is typically another subject or a specific focus in which a students spends time studying. Generally it is a good idea to have a minor that is at least applicable in some way to your major though it isn't required. For instance a political science major could take a mi... |
How are there multiple ways of playing the same guitar chord with only minor changes. | They're not changing any notes. They're just playing notes at different places on the neck. Remember there are only 7 whole notes A through G, and four half notes in between. They appear on many different places along the fretboard. Various positions for the same chord just give the chord a variety of textures and some... |
In the film Blacksea, why would the air in the german sub be acidic? | > how they got in without water following I have no idea I haven't seen the movie, but the submarine could have had an airlock that limited the amount of water that could get in. If the sub was working, an airlock would pump most of the water out before they got into the dry inside. If the sub was not working, the airl... |
Why are men's workout clothing fairly loose fitting while women's workout clothing is quite close fitting? | So, while wearing tight clothing for workouts is a good idea in general, part of it is that society places a more important role on women having to be attractive and show off than men. Women are expected to look good at all times, while men don't have to. So that's why women wear yoga pants, while men wear baggy sweatp... |
Could roads be made out of (or be coated with) hydrophobic material for a safer drive in rainy or icy conditions? | It's actually best to have the road be porous and have under road drainage. It's the pooling of water on the road that is dangerous, not the road being wet. |
What do they feed lab grown meat? | At the most basic level you still need to feed the lab grown cells/tissues the basics of cellular physiology - this is well understood and in principle pretty much the same as well known eukaryotic cell culture methods. I'm sure that depending on specific technique there are some varying protocols, but the basics remai... |
Why was the repeal of Glass-Steagal such a bad thing? | Its complicated but basically banks used to be banks and investment firms, mortgage brokerages and insurance companies used to be separate things. GS was put in place after the depression to forbid banks from being too many thing, and thus 'too big'. When it was repealed, thats exactly what they did - became too big to... |
Why do India and China have such a high population, compared to other countries? | It's mainly because of massive rivers that feed off the Himalaya snow melt. Predominantly, the Yangtze and the Ganges for China and India respectively. There's no mountain range higher than the Himalayas, and here are two enormously massive civilizations taking advantage of it on either side of a continental divide. |
since fat is excreted through breathing and waste, does that mean cardio does nothing positive other than increase breathrate and heart rate? | It causes more CO2 to be exhaled in each breath. It isn't how often you inhale and exhale that matters. It is how much CO2 your body gets rid of via the lungs. If your body isn't making much CO2 due to the carbon all being stored in your fat cells, you have to do exercise to get your body to break down those fats for e... |
Why immediately before or after I fall asleep I sometimes twitch erratically? | It's very common and no-one knows why it happens. You can treat the answers on this thread as speculation. My favorite theory is that the hypnic jerk is a hangover from when we were less evolved creatures -- a kind of safety mechanism. For example, deeply ingrained in the brains of our small tree dwelling ancestors was... |
What causes your stomach to rumble when you're hungry? | I'm getting flashbacks to high school during those SAT's when it was deathly quiet and all you hear are grumbling stomachs all around.But why the more we think about it the more frequent it occurs? This always happens to me. Haha. I was always hungry during my lectures and the moment I started being concious about it, ... |
What's the difference between .jpeg images, .png images, etc? | ELI5, they are like different languages, different ways to say the same thing. ELI15, They are different methods for storing the same data. Pretend you have a graph of sales figures for a major company on a white board in your office. Your boss wants you draw that graph on the board white board in the CEO's office? How... |
The laser propulsion system NASA is saying could get us to Mars in a month | Using photons in a directed beam can impart momentum to an object. So you launch an object into space, then remotely pop open a sail and hit it with a laser. You impart momentum and it moves forward. You can get objects to move damn far and fast if it's done right. The practicality of building these objects first is an... |
What's the difference between a 'mental disorder' and a 'mental illness'? | On a biological level, there is no difference. On a cultural level, it has to do with the connotation of the words. People may feel like a disorder isn't as bad as an illness. |
How do scientists discover planets that are light-years away? | If you moved a rock infront of a light, it would make it slightly dimmer in your view. Similarly, scientists look for times that a planet passes infront of a start and then check for the telltale drop in light intensity from that star. If it happens periodically, in a certain way, it's likely a planet rather than some ... |
Why was England immune to the development of different languages within in, as it occurred in other European countries? | England is just not that big. Also there's no real distinction between languages and dialects so you could definitely say there's different varieties of language in England.In addition to the above, the printing press also killed many dialects. Dialects which in some cases would be totally incomprehensible to modern sp... |
How do we measure the intelligence of dog breeds? | generally, it's based on their ability to learn complex tasks. herding dogs, like collies, can't just memorize specific actions to perform their job. it's important to note here that train-ability and intelligence are quite different. some of the most intelligent breeds are incredibly hard to train because they are sma... |
Why do evangelical Christians strongly support the nation of Israel? | EDIT: Israel is **one** of our only allies in the region ~~Israel is our only ally in the region .~~ They are literally surrounded by the same countries/peoples that would see Israelis, Americans and other Western Influenced nations destroyed. Jesus was a Jew who lived in Israel. There were prophesies of the Jewish peo... |
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