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why hasn't the price of helium skyrocketed with its depletion? | I mean other than balloons, what's it really used for? Edit: apparently alot.Depends on the Grade / size of tank of Helium but its price varies between $300 for 300 cubic foot balloon grade tank to $2500 ~ $3000 for a 300 cubic foot Ultra High Purity -source works at gas filling plantThe USA was subsidizing the cost as... |
Why do Auctioneers speak the way they do? | I'm guessing because an auction is a fairly fast-paced event so they need to be quick and not linger on bids for too long. And it keeps the excitement alive. |
Why is there such a vast temperature difference in the desert between day and night? | The sun is up during the day and down during the night. The sky is rarely cloudy so it's easy for the heat to go in and out . There's little water which, if present, can absorb a huge amount of heat with little temperature change. Instead there's often sand which is a great insulator, allowing the top layer of sand to ... |
What causes that "empty" feeling in your chest when you're sad or depressed? | Stealing this from another thread of a similar topic:Basically, we're not really sure, but scientists think that the anterior cingulate cortex of the brain overstimulates the vagus nerve. This causes pain, nausea and muscle tightness in the chest -- hence the feeling that your heart is heavy, or those sharp pains when ... |
Why do people ask questions that can easily be Googled? | a. The question is subjective and up for interpretation. b. They are looking for more information than the search provides. c. They don't know the best query to receive relevant results.Depending on the complexity of the subject, I may do it to avoid misinterpreting an online answer. 1 paragraph from a knowledgeable pe... |
Why Is Water Not Sold In Cans? | I have seen canned water - it's just rare since the basic premise is seeing how clear and pure it is. |
How can a heart operate for such a long time without faltering. | I'm the same way, I've learned more about the whole cardiovascular system since March this year. I had a PE, pulmonary embolism, and small heart attack and I'm 34 . scared the shit out of my family and my self. on blood thinners and blood pressure meds for god knows how long |
Why does my cars air conditioner burn fuel and not just use the battery like my car radio? | Your car air conditioner is ran by a compressor in your car. The compressor is driven by a belt hooked up to the engine. When you turn on the air, the compressor engages, putting more strain on the engine. It's kind of like how driving up a hill or pulling a trailer uses more gas. Your engine has to work harder, so it ... |
Why don't/can't we use the sun's energy as our number one source of power? | Why don't we all eat penguins? Because they're very far away and difficult to get to the public in a usable form at a reasonable cost. ;) The energy of the sun has pretty much the same limitations. First, not all that energy is directed our way. Of the energy that comes towards our planet about 30% gets reflected back ... |
What would happen to Earth's oceans if the moon blew up? | They would be peppered by lots and lots of little bits of moon, like the rest of the planet. They'd absorb the onslaught better than the land would. |
Why is is that my computer can get a virus but my IPhone can't? | There is a healthy amount of sandboxing in iOS . This means that apps don't really have access to administrative areas of the phone. Think of it like a walled garden. The only processes that can make system changes are the ones built into the phone or distributed by apple. A windows computer is not like this, at all. |
Why am I often very tired during the day, but struggle to fall asleep at night? | Some people describe this as [adrenal fatigue], though the term isn't medically accepted. It's usually caused by stress and/or poor sleep hygiene. Could also be hypothyroidism. It's almost certainly an endocrine problem though, and can usually be controlled with diet, supplementation, and/or stress reduction. |
Why do voting laws that limit early voting periods and eliminate same-day registration disproportionately impact minorities? | Have you ever had a boss schedule you for a double shift on voting day and tell you you can't have time off, even though the voting place you have to go to is less than a mile away? I have. It's expensive and restrictive to be poor.Voting has costs and benefits. The young, those lacking formal education, and poor have ... |
Why could we go to the moon in the 60s, but cannot now? | > numerous scientists at NASA have admitted that we do not currently have the capability for lunar travel. We don't currently have any ships that could go to the Moon. We'd have to build them , which is very expensive. And there's pretty much zero reason to spend billions of dollars to go back to the Moon when there's ... |
Can my son's plan to terraform Mars work? | Air is like a blanket keeping planet warm. The problem with Mars is that it is wrapped with a single layer of very cheap toilet paper - it has very little air, so it can't keep warmth from the Sun. Without proper atmosphere, there can't be liquid water, we won't be able to go outside without protective gear, more radia... |
How do friends of mine eat really hot food, freshly out of the oven, without burning themselves? | I guess it has to do with sensitivity. I can eat a lot of hot stuff, but whenever I eat something SUPER HOT, I can have it in my mouth and either shift it around a lot and it's not as bad because it's never sitting it I can kind of suck in air to cool it off so I can eat it without getting burnt |
How does a graveyard stay in business after it's full? | In Sweden the cemeteries are funded by a tax which the government by default gives to the Church of Sweden who have been tasked to operate most cemeteries . If you are a member of an organisation with its own cemetary your tax will go to them instead. Each plot is reserved for at least 25 years after burial for free, b... |
Why is that persons with down-syndrome often look identical to each other? (Not trying to be disrespectful) | Because they share some very common traits as /u/sourgurl75 stated. To extrapolate upon that it goes along-side common themes found in racism, When you don't see these people often you just see their very noticeable traits which happen to be shared between them all, but when you're around them more often then you start... |
Why when you turn on a hose, you have to wait a while for the water to reach the end, but increasing the pressure afterwards causes the output flow to rise almost immediately? | When you first turn on the water your hose is near empty of any water. It's full of air and the water needs time to fill up the entire volume of the hose. Cylinders are deceptive in how large of a volume they actually have. Now by increasing the pressure I assume you mean putting your thumb over the end. This is actual... |
Since the Earth is round, wouldn't planes get into space by flying in a straight line? | Planes use an instrument that shows them the horizon and the level of the plane so they know if they are pointed at the horizon, or above/below, in degrees. Pilots and autopilot follow that instrument and point it at zero. Planes therefore would not be flying in a straight line, it'd be a very very subtle curve that I ... |
How shooting and stabbing scenes are done in movies. | One option is a collapsible knife. The blade isn't actually sharp, and when you press the tip or side against an object or person, the knife folds up. |
Why do doctors give you a prescription with a limited number of refills for a medication they know you need to take for possibly the rest of your life? | For starters, a Rx is only good for a year so the most you'll every get is 11 refills and that's not uncommon. As others have noted, you may need to get periodically evaluated and have your dosage changed. Having fewer refills mitigates the chance that the pharmacy will fill the 10 mg Rx when you're supposed to get the... |
Why we get tax money back at the end of the fiscal year if things are still so shitty? | Because it's your money. A tax refund for the vast majority of people is just a refund of the taxes that they overpaid during the year. When you have a job, you fill out a W-4 form where you elect how much money the government can take out. Unfortunately, most people just use the governments shitty calculation and end ... |
How does an actor direct himself in a movie he stars in (Million Dollar Baby, The Apostle) | A huge part of it is playback - the ability for the actor/director to review what was just shot and make adjustments based upon what he or she sees. The two processes are fairly distinct. There isn't as much overlap as you're probably thinking. It is a ton of work but doable. |
Why does fruit flavored candy taste different than the actual fruit? Like banana for example, who said banana flavored candy is even banana at all? | also to things like strawberry. they use molecules from the fruit to get the best flavor. even if it isn't the exact flavor. or. something like that. |
Why do blood tests draw blood from a specific vein? | That is a common extraction point where it is easy to find a vein. They don't want to poke you a dozen times to get blood. If you are dehydrated or a chikd who has tiny veins they may draw from an ankle, or even the scalp if you have no hair. Fore-arms are usually the best places though.You can get blood from any vein,... |
Tuesday Morning, I will be explaining to an entire high school how Net Neutrality is on life support, what points would ELI5 suggest making in my explanation? | Imagine a city where every delivery vehicle is leased from a company that also makes cheese pizza. One day a new pizza place opens up that includes toppings. They start delivering and it's very popular. But then the cheese pizza place takes away their vehicles and only offers delivery bicycles to them, unless they pay ... |
Why do you differentiate between different types of cancers? Isn't it just the same type of mutation spreading from a specific part of the body? | The primary determinant in what type of cancer you're dealing with is the specific type of tissue the cancer originated in and how much the cancer has spread. Skin cancer has three common types: Basal Cell Carcinoma, Squamous Cell Carcinoma and Melanoma. Each type involves a different type of skin cell. BCC, as the nam... |
Why are hurricanes in the Atlantic so much more powerful than in the Pacific? | If you lived in Hong Kong you would be far more familiar with Pacific tropical cyclones which are generally called typhoons instead of hurricanes. Due to the Earth rotating, most tropical cyclones travel westward which means California isn't at risk of getting hit by them but Hawaii and East Asia are. Pacific typhoons ... |
Can artificial intelligence ever be conscious or self-aware? How? | **You** are nothing but a set of algorithms Why would an artificial intelligence be any different? It just takes an immensely complex algorithm. |
What makes LISP programming languages so powerful? | [Scroll down a lot and read the comic]. It's very pro-Lisp and not quite objective, but it gives you a glimpse of some of the things Lisp uniquely has going for it. |
Why can't the whole world switch to one currency? | for the world to have a single currency, there has to be a single central bank which makes all the decisions. Basically that single bank will be able to control the world quite literally, and so for political, ethical and social reasons, that can't happen. If you want something like a decentralised currency system say ... |
If we went to the moon in the 1960s, why can't we go now? | If you mean manned missions, because there's absolutely no point in it, beyond the gee-whiz factor. If you mean unmanned missions, there has been a steady stream of them since the 60s. The Apollo program was funded *solely* for the purpose of showing the world we had bigger dicks than the Rooskies. Pretty much the seco... |
Why can journalists say "according to someone familiar with the matter" but not say the name of the person? | It's an anonymous or blind source. Some times this is someone leaking information they shouldn't. Other times it's someone getting information out there that the company or government wants, but they don't want to be tied to it so they give it off the record. As for the validity, this is where the credibility of the re... |
What is the origin of the fake heart shape? | Nobody knows for sure, but the earliest use of the shape we connote with a heart can be traced to the early 14th century. Some scholars have argued that the roots come from the writings of [Galen] and [Aristotle], who described the human heart as having three chambers with a small dent in the middle and that the heart ... |
Why hasn't increased mechanization ushered in an era of prosperity in which humans are able to live relaxed lived and live off of the products machines produce? | Well me, I'm living after the invention of The Weekend. Also 8hr workdays instead of 15, also staying in bed hours after sunrise every day. Then I get up and repair mass spectrometers all day. Only today it was a LEED controller with a fried gate drive transistor in the electron gun filament control, which would only g... |
How is the Earth still spinning? | While the speed of the rotation isn't constant and can be affected by large storms and other phenomena, there really aren't any forces acting on the Earth to significantly affect the rotation speed. Here on Earth you can't keep a top spinning forever because of the friction between the top and the surface it spins on a... |
Why do iPhones take so long to charge/turn on when they die? | This happens for a combination of reasons: The iPhone when charging runs off of battery power. This means that there needs to be enough stored power to handle what you want to use it for. Constantly running from the battery at a zero or near zero state can cause it to lose capacity or reduce its ability to charge. Your... |
Why is staring ("spacing out") so soothing? | It's not like that for everyone. Spacing out and staring isn't soothing to me at all. It's just Nothing. Boring, I guess, but not relaxing. |
Why do dogs have separation anxiety? Do they lack object permanence or is there something else? | Also, they have no sense of time. So they don't understand that it's not forever. |
How come humans cook meat before eating it to avoid sickness and disease, but animals just eat meat raw? | A few things going on here. 1. It tastes better, so we've gotten used to it. 2. Wild animals eat fresh meat, , our meat processing is not as quick nor as sanitary, and if meat has been dead for a week, it will have some bacteria. 3. Since we eat cooked meat all our lives, we don't have the same gut flora to help us dig... |
Sometimes my poop is too big and it tears my butthole slightly, resulting in blood. How come I don't get any diseases from my poop when it's essentially seeping into my bloodstream? | A friend of mine had this happen when he started eating bread again after several months on a wheat-free diet. Ended up with poop so 'big' it had to be scooped out by hand. His hand.it happens to me i take a stool softener every night before bed so its softer drink lots of water so there is a lot of lubrication in your... |
why diesel engines are rare in American passenger cars, but common in Europe. | Higher federal taxes on diesel fuel results in higher prices at the pump. Combine that with the fact that the price for the same model car is generally higher if it has a diesel engine and Americans don't see the benefit in a higher MPG when they are shelling out more for the car and fuel. |
Why does playing a Blackjack hand incorrectly negatively affect everyone else? | Blackjack players like to feel they have some control over the game. Technically, the odds in blackjack never favor the player, even with every hand played precisely as it should be. The deck tends to feel like it's running a certain way at times, and players feel like if they keep playing it right, it will shift, or i... |
Why will Social Security be going away? | Don't believe everything you hear. Social Security isn't going anywhere. In a few years the Social Security trust fund will be empty, at that point Social Security will begin operating at a deficit. Social Security is so popular among the older voting bloc that NO politician Democrat or Republican will let it go bankru... |
What makes a pizza cutter so much better at cutting pizza than the average knife is? Why don't we use pizza cutters for all foods if they're so much better? | Lots of pizza places don't cut your pizza with a wheeled pizza cutter. They have a curved blade longer than the diameter of the pizza. This they can set across the pizza and rock it across once then rotate to cut again", 'The standard home pizza cutter is not even the best options. This thing right here is the shit. _U... |
What happens when I (male) ejaculate? | Peristalsis! Peristalsis is the force that causes food to go down your throat . It is a series of waves of muscular activity going down the length of the tube. Or, like your five, imagine milking a cow or imagine squeezing the last bit of toothpaste out of a really long tube of it: squeezing one end, moving a bit, sque... |
Why does HD (2mp) movies look so sharp/clean/detailed but a 2mp photo looks so bad ? | Something no one here has mentioned is that there's a lot that goes into making a camera look good other than MP. There's color science, dynamic range, cinema-quality lenses, and a bunch of other factors.A 1080x1920 cropped photo from a good camera looks just fine. Any camera thats native 2mp is likely to have a crappy... |
Why does so much commercial real estate sit empty for years? Why not lower the rent to attract tenants/stores? | Mainly because part of what you pay in rent is for the popularity of the area. A moderately good pizza restaurant in a busy strip mall might be able to make a go of it, just because there will be people there, and some of those people will be hungry. An excellent pizza restaurant in an abandoned strip mall will fail, n... |
How was the Xbox 360 so future-proof at launch at $360 and not Xbox One | Maybe my memory fails me, but I don't recall the XB360 outpacing PC rigs to the degree you're implying. The gap was definitely closer back then though. Anyway, the answer is probably a combination of factors. One thing to remember is that the resources necessary to produce high-end graphics increase in a linear fashion... |
Is there any reason why asian-americans are so overrepresented in terms of academic achievement and have significantly higher test scores than their non-asian counterparts? | I think it's more from there up bringing or parenting. All of my Asian friends growing up had stricter home lives than I did. Especially when it came to academics. |
Why a cake day is celebrated on reddit? | I still don't understand what happens on cake day. I know you get a cake icon. Do you get instant karma for posting? Double karma, or karma on a self post?", 'Because you can put "It's my cake day" in the title of your post instead of "please upvote this" and apparently that is not a violation of intergalactic lawJust ... |
How can encryption methods be open source? | We all know how a mechanical door lock works, but that doesn't mean you can just break into any lock easily. It is still much easier if you have a key. For encryption it's kind of the same. Knowing the algorithm might give a small edge for whoever is trying to break it. Or not. Modern algorithms are actually *designed*... |
How can a Cliff-Diver survive a 150ft plunge while people die from jumping off shorter bridge? | The single biggest factor is deceleration time. The impact with the water brings your skeleton and muscle structure to a sudden stop but your internal organs are still moving. Your internal organs are like a passenger inside a car. When it's car comes to a sudden stop the passengers in the car keep moving forward unles... |
Where did all the cereal prizes go? | Remember back in the late 90's/early 2000's when they would put cd-rom games in cereal boxes. I remember begging my mom to buy lucky charms , just to play roller coaster tycoon or who want's to be a millionaire. |
If domestic beers (Bud Light, Budweiser, etc) are so universally reviled, why are they so popular? | Two reasons. One, a lot of people grow up drinking bud light and never really try anything else. Or by the time they do try something else, a lot of other stuff is just too dark or heavy compared to what they're used to. And conversely, someone who drinks Sam Adams or Guinness or something will hate bud light. Some of ... |
Why is it that I feel more tired getting up early even if I get the same amount of sleep? | On Being had Ellen Langer on once. She talked about a sleep study where participants slept in a room with a clock. For one third of the participants, the clock ran at normal speed, one third had clocks that ran fast, and the last third had clocks that ran slow. They all slept for eight hours, and then took tests upon w... |
Why can't we get salt out of seawater efficiently enought to irrigate with? | Here in Hawaii we have a Ocean Thermal Energy Converter that pumps up cold deeps sea water from the ocean. As a side effect of this, you can run the cold water through some coils and it condenses on the outside producing fresh water for farming. It's not desalination but uses seawater to irrigate so I think it's the cl... |
How does the Snapchat map know what people are doing? | The app can tell how fast you're moving, what apps are running, and if you have headphones in. |
I'm sorry for getting political, but can anyone tell me *why* a senator would support the sale of IP address histories? | Some politicians believe that the market is *everything*. If something *can* be traded and sold, then it *should* be traded and sold. So if these kinds of data can be sold, that means one of the following will happen : - either users will switch to ISP's who promise not to sell it , or- ISP's will make more money . If ... |
Why did the United States never switch over to the metric system? | Ahoy, fellow redditor. Yer not alone in askin', and kind strangers have explained: 1. [ELI5: Why won't the USA switch over to the metric system? ] ^1. [Why does America still use the standard system, and why is it called standard if no one really uses it but us. ] ^1. [ELI5: Why is the US not on the metric system and n... |
Why Rockstar never use real name places in GTA? | Because a game that tries to mimic a real life city never really does it the right way. Look at Infamous Second Son. It's supposed to take place in Real World Seattle. The map has locations based on real parts of town, but it doesn't make any actual sense if you live in/around Seattle. |
Why does cheese taste so much different melted than cold | Because the heat from melting the cheese denatures the proteins in it. This changes the size, shape, and characteristics of the cheese, altering it's flavor, smell and texture. |
Why do insurance rates go up after a car accident? Isn't that like casinos raising their house edge because you won? | Casinos do change the odds - if a 3 to 1 horse wins a race, then the next race, the odds will lay at 2 to 1. They price based on the real-world data they have. The only things they don't change are the games of cards and dice, because those odds are fixed in and they don't change from game to game. Insurance companies ... |
How do radio stations choose which songs out of an artist's album to play and become popular? | Radio stations can't always just play whatever they like. The songs have to be released by the promoter. They are released to radio some weeks before they are released as a single. |
With water bring essential for survival, why haven't we evolved in such a way that water tastes much nicer than it does? | It tastes darn good when you are thirsty. There's less food than water in our natural hunter-gatherer environment. Water is tasteless to us because we also need to appreciate other foods that we need to survive. Our body pushes us towards sweetness , saltiness , fat, proteins and needs to make tastebuds love and recogn... |
Why female circumcision is considered "mutilation" but male isn't | Who says it isn't? The U.S. is one of the few modern countries still doing it and it is related to our conservative religious background. I would say the female procedure is worse but the male form is similar and not a good thing to do to babies. Anyone that wants it should be able to do it at 18 anything else is cruel... |
Why is it that I can tolerate or even enjoy my own farts, but can't stand other people's? I assume I'm not alone in this phenomenon. | I asked this on /r/askscience a few months ago. They weren't interested in answering.As a San Franciscan, I absolutely love the smell of my own farts!Russians say "your own shit doesn't stink", I guess it's applicable here. |
Why is the sense of pain or discomfort caused? | It's a very important mechanism. It tells you something is wrong, it's there to stop the body from damaging itself, or will make you pay attention to an injury |
Does photographic memory really exist? If so, how does it work? | The term Photographic Memory is often heavily misused and misunderstood. The common error is conflating a Photographic Memory with an Eidetic Memory. An Eidetic Memory relates to a person who with very little exposure to an image, can recall in extraordinarily details about the image, and also not lose those details ov... |
Why doesn't all the rain fall at once | Bits of water will leave the air into a body of water, or leave the water into the air. How quickly this happens depends on temperature and how much water is in the air. When rain falls, it takes water out of the air. This dries out the air, which keeps as many bits of water from going into liquid water, which slows do... |
How did humans become so dominant when human babies conpared to other species babies are absolutely helpless | > human babies are just crying meat pies that can't do anything but poop, pee, barf and cry. Which is why human babies are protected by their parents until early adulthood. Once they reach adulthood, humans became extremely dominant. If the most dominant species protects its young until it can become dominant, it's kin... |
What can I do to fight against terrorism? | The only thing I can think of is not to blame the peaceful muslims in your country. Show the terrorists that their attacks don't work and will not divide you and your neighbors. |
Numbers and letters on Processor model? | U", or "Y" tells you that it's mobile- the H are the highest powered chips, they tend to use more power but also support the most features. "M" is a normal laptop chip, "U" is a low-powered chip designed for ultrabooks, and "Y" is an even lower-powered chip designed for tablets . I 've never been able to figure out wha... |
What happens in the stomach after vomiting to the point of dry heaving? | This may not be the case for all, but it's from my experience; I've had all-day vomit fests on multiple occasions. Actually had my gall bladder removed because of it. Didn't help. Once you've vomited all solids up, leaving nothing, it takes about 20-30 minutes for more bile to build up in your stomach. But nothing belo... |
Why is gold a bad investment if the value keeps rising? | The real reason is that there is only so much actual 'physical', ready-to-sell Gold in the world. And most of it has already been purchased. When you buy Gold these days you're buying what's called 'paper Gold'. Which is, essentially, an 'IOU this much Gold at this price'. Except it's been common practice to take that ... |
What did Nixon supposedly have to gain from the Watergate Scandal? Wasn't the Democratic Party already imploding as a result of McGovern's failing Presidential campaign? | Only in retrospect did Nixon seem a shoe-in for reelection. It was only after McGovern was reveled as a terrible candidate, and that was months after the break-in. But, yes, a reasonable person could have seen that risk was greater than reward of going into O'Brien's office. But these guys were not that bright and a li... |
Unleaded Gas ??? Is there Leaded Gas ?? | Cars before 1980 commonly used leaded gasoline. It has since been removed due to harmful byproducts of making it and burning it in your engine. It's rare to see a gas station that carries it. Don't think it's even legal per se, but they put warnings in your car just in case. |
Why are German products higher quality? | I wouldn't say it has anything to do with any crazy engineering or anything. Germans just don't settle for shit. If something breaks or is unsatisfactory, they will let it be known. I think that is the main reason. If you are complacent and accept it, of course its going to keep happening. |
How does blood alcohol level relate to drunkeness state? | It is all about your body's ability to metabolize the alcohol. The more you drink the less you can metabolize which means it builds up in your system and you become more intoxicated. As far as you and your friend that just means your body is better at metabolizing alcohol than his. Your BAC is a relatively accurate mea... |
why do mosquito bites have to itch! They would be so much more successful if they sucked blood peacefully! | Itching is our body's response to the intruding foreign material the mosquito anesthetizes the bite site with. The itch usually occurs long after the mosquito has left, so it doesn't impact their efficiency.You say "They would be so much more successful", and that's true, but it's only meaningful if we assume that mosq... |
How can we be "running out of fresh water?" | Firstly, the water cycle doesn't guarantee that water is never created or destroyed. When you drink water you excrete most of it, but some of it may be converted into other molecules within your body. When plants absorb water they combine it with CO*_2_* from the air to make sugar . So from the start you shouldn't be e... |
Why is the Space X Rocket trying to land on a barge and not land, seems easier to do... | They will eventually land on land. For now, though, they are working out how to do it. It's much better to do that over water than land, because if something goes wrong, you don't take the risk of landing the rocket on, e.g, someone's house, or a playground full of kids. |
why do Americans stop supporting their children and want them to move at 18 years old, and other cultures children stay at home until after marriage or until 30+? What caused these discrepancies? | In America By 18 you're legally an adult and you should be done with high school. At that point you pretty much have nothing to do but work unless you go into the military or straight to college and even then many people work during college to help pay for it. So at that point it's traditionally seen that you can take ... |
Why does the tempo of a song seem slower than you remember sometimes? | There are a number of reasons this can happen. Sometimes it's you, sometimes it's what you're actually listening to. The latter is rather easy to explain: It might be a remix of some type you've heard; perhaps a radio station has actually altered the pitch and speed either to give a distinct sound or for copy protectio... |
How come human infants are (seemingly) much needier and more frail than any other infant animals in the animal kingdom? | Human infants are like that due to following reasons:- We are mammals. Mammal infants are born a lot weaker and are extremely dependent on their mother for at least a couple of months.- Human evolution recalibrated us into animals that are centered around adaptation. We are the only animal species that can successfully... |
-- Considering how painful it is, why is there no way to get rid of a kidney stone except by passing it? | I'm not an expert, so I'm not going to contribute an actual answer. But I think part of it is that pain is not as big an issue in medicine as you might expect. They are more concerned with alleviating dangerous or damaging conditions. Of course, they'll relieve pain when they can, but most research funding is going tow... |
How do vending machines recognize 'new' money when the design has changed? | For coins, vending machines don't care what's stamped on the front and back, they measure: * Size* Weight* Material * Edge serrations And none of those things change when they decide to put a different face on a nickel or a different back on the Quarter. |
Climbing Stairs in twos...double the work? | In terms of work and potential energy it doesn't matter if you take one step, two steps, there steps, or all of them at once. Work is energy over time, and while taking two steps might take less time, the energy is higher, whereas taking one step at a time is less effort, but takes longer. The math works out the same e... |
Why does a negative number times another negative number give a positive number? | Think of it this way: When good things happen to good people, that's good. When bad things happen to good people, that's bad. When good things happen to bad people, that's bad. But when bad things happen to bad people, that's good.Think of it this way: * Good things happening to good people = good * Bad things happenin... |
How does one survive being struck by lightning? | Pure luck. Lightning has more than enough potential to kill you if it runs thru your brain or nervous system. However if it just runs on surface of your skin, you'll just get bad burn. |
How will the new CISA bill affect the average citizen? | Average citizen is fine once s/he doesn't try to do anything clever or cross the wrong person . It's like any police state; just don't do anything clever, don't cross the wrong person dandy. |
Why is Internet not considered a utility? | There is quite a bit of both Economics and general human advancement in this question. The few people who saw the ability to turn profit bought out prominent figures and advocates to the public and cut them in on the revenue. Large corporations like Comcast are simply able to push off questions such as these because th... |
Why can people watch fish and crustaceans being skinned, crushed, or steam alive as food but can't stomach seeing a cow or similar animal butchered? | People who are concerned about animal cruelty generally don't think that it is a good idea to cook anything - be it a lobster or a cow - alive. I think the general population is often ignorant to the fact that species other than mammals feel pain. They have nerves, pain receptors, and their brain responds to pain. They... |
What are the actual consecuences of being without an astronaut suit in the space? | One of the misconceptions of people exploding is due to the misinterpretation of Henry's law. You know how there is gas inside of soda? Well there is a certain amount of pressure in the bottle or can keeping that gas dissolved into the liquid. When you open the can/bottle, you release the pressure and the gas escapes t... |
Can someone explain to me the equation for acceleration? | I'll give this a shot. Let's consider a particle that moves only along the x axis. Now, its initial position at t = 0s will be Xo and it's in meters. Let's say that after 5s the particle is at a new position X. The average velocity of the particle would be the change of its position in the time elapsed, in other words ... |
Why did the Zune fail? | This isn't a complete explanation, but it may help account for some of the failure: the Zune did not expand to nearly as many territories as the iPod. For a few years, it didn't hit NZ . |
Why is Donald Trump saying insane stuff about his own party? | I would assume it's too keep up the image of not being afraid to confront issues head on, or to say what needs to be said without worrying about the consequences. |
Do animals (like different kinds of felines or dogs) know they belong to different species? | Of course. They can tell by smell and by sight. They don't understand the concept of species, but they certainly understand what species they are part of. They know what animals are like them and what animals are not. Not only that, the a leopard mother could tell her cubs from the cubs of other leopards. |
What safeguards are in place today to help prevent another recession as bad as the Great Depression? | _URL_0_ I'm not sure borrowing money and people spending money they didn't have caused the depression, but that's your answer. |
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