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wczkz | What does a medical study mean when they say "increases risk of death?" | The text that prompts this is: "There is currently a widespread belief that any degree of overweight or obesity **increases the risk of death**, however our findings suggest this may not be the case." (from the Gizmodo article linked [here](_URL_0_)). Isn't the risk of death 100%? How can it increase? | askscience | {
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} | What does a medical study mean when they say "increases risk of death?"
The text that prompts this is: "There is currently a widespread belief that any degree of overweight or obesity **increases the risk of death**, however our findings suggest this may not be the case." (from the Gizmodo article linked [here](_URL_0_... | [
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68zvak | Why is the periodic table such a great historical accomplishment? I understand that Mendeleev was ahead of his time but I never understood what it is he actually did, or how he did it to be able to get his results. | 'Chemistry' | askscience | {
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} | Why is the periodic table such a great historical accomplishment? I understand that Mendeleev was ahead of his time but I never understood what it is he actually did, or how he did it to be able to get his results.
'Chemistry' | [
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iwen2 | Is it possible to have perfect color in the same way that some people have perfect pitch? | Normal people need to hear a note relative to another note to determine it's pitch. People with perfect pitch do not. This reminds me of how with colors we look at what is surrounding one shade to determine its color. Is it possible to judge a color correctly in any frame of reference?
In other words, Is there anyone... | askscience | {
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"Nope. \n\nThe eyes don't work like hearing, and we are more limited in light perception. We have thousands of cilia that pick up sound, but really only see color as a mixture of perhaps 4-5 receptors for light, making color... | {
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} | Is it possible to have perfect color in the same way that some people have perfect pitch?
Normal people need to hear a note relative to another note to determine it's pitch. People with perfect pitch do not. This reminds me of how with colors we look at what is surrounding one shade to determine its color. Is it possib... | [
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sklnk | What would it be like to live on a planet with rings around it? | askscience | {
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} | What would it be like to live on a planet with rings around it?
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20g2ga | Is it possible to create salt-water tolerant crops? | We have no shortage of salt water but droughts of fresh water are a problem and are likely to become worse. An obvious source of water is the ocean (we're unlikely to deplete that) but the salt content is quite high and desalination is expensive.
Is it possible to "force evolve" some crops to be tolerant of salt water... | askscience | {
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"http://www.loe.org/shows/segments.html?programID=03-P13-00017&segmentID=6",
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"http://e... | Is it possible to create salt-water tolerant crops?
We have no shortage of salt water but droughts of fresh water are a problem and are likely to become worse. An obvious source of water is the ocean (we're unlikely to deplete that) but the salt content is quite high and desalination is expensive. Is it possible to "fo... | [
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x1el6 | I have a ring made of Tungsten Carbide. It has some scratches on it. How could this have happened? | I don't own or handle any diamonds, and my understanding is that Tungsten carbide is one of the hardest substances around. Is there anything that I may encounter in my every day life that has the ability to scratch my ring? | askscience | {
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} | I have a ring made of Tungsten Carbide. It has some scratches on it. How could this have happened?
I don't own or handle any diamonds, and my understanding is that Tungsten carbide is one of the hardest substances around. Is there anything that I may encounter in my every day life that has the ability to scratch my rin... | [
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3hkoup | AskScience AMA Series: I am skratchx and I study magnetoresistance. Ask Me Anything! | I'm /u/skratchx, a "senior" graduate student working in an experimental condensed matter physics group focusing on applied magnetism. My research focuses on patterning and characterizing systems exhibiting magnetoresistance, usually with a conductive atomic force microscope. This involves running a current through tiny... | askscience | {
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"In relation to the famous video of Feynman ta... | {
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} | AskScience AMA Series: I am skratchx and I study magnetoresistance. Ask Me Anything!
I'm /u/skratchx, a "senior" graduate student working in an experimental condensed matter physics group focusing on applied magnetism. My research focuses on patterning and characterizing systems exhibiting magnetoresistance, usually wi... | [
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awu3g9 | In snowy mountain areas, avalanches occur, we all know this, but does the same happen in the desert on high dunes? | askscience | {
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"https://cdn-images-1.medium.com/max/1200/1*SB7L1Hmb1PgORJ9L3KvjTA.jpeg",
"https://3c1703fe8d.site.internapcdn.net/newman/csz/news/800/2... | In snowy mountain areas, avalanches occur, we all know this, but does the same happen in the desert on high dunes?
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mlybj | I'm stranded in the wilderness and have fire and spoiled meat, can I eat the meat and live? | askscience | {
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"Bacteria many times leave behind waste products as toxins that cannot be disinfected or burnt away. Botulism toxin can be destroyed through such a method of cooking (_URL_1_) but there are many toxins that cann... | {
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"https://en.wikipedia.org/wiki/Botulism",
"http://aggie-horticulture.tamu.edu/extension/poison.html"
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} | I'm stranded in the wilderness and have fire and spoiled meat, can I eat the meat and live?
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6peo30 | Have we ever observed anything behaving as if it only existed in a lower number of dimensions? | askscience | {
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"https://en.wikipedia.org/wiki/Two-dimensional_electron_gas",
"https://en.wikipedia.or... | Have we ever observed anything behaving as if it only existed in a lower number of dimensions?
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1h2d35 | Does the start of the Industrial Revolution mark the first time humans were able to have a global impact on the environment - such as through climate change? Did this happen before the era too? | askscience | {
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"https://en.wikipe... | Does the start of the Industrial Revolution mark the first time humans were able to have a global impact on the environment - such as through climate change? Did this happen before the era too?
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3u2k8g | If you point a very focused and EXTREMELY powerful torch at a very sensitive weight scale, would it show anything at all? | This is probably a dumb question, but I still want to ask, let's say the torch is 9999x more powerful than you thought it was after reading the title, and the scale is the most accurate and sensitive one possible. If the answer is absolutely 0, does this apply to microwaves, other EMR? (Let's also forget about the ener... | askscience | {
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} | If you point a very focused and EXTREMELY powerful torch at a very sensitive weight scale, would it show anything at all?
This is probably a dumb question, but I still want to ask, let's say the torch is 9999x more powerful than you thought it was after reading the title, and the scale is the most accurate and sensitiv... | [
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2l2xr5 | Is External Processing Possible? | I there a way of connecting a computer to and external server in such a way that all processing usually done on the computer could be done on the server, and then the results displayed on the computer? Example: Using an external server to process a game of COD and play it on a netbook with 0.5 gigs of ram. Is it possib... | askscience | {
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"http://en.wikipedia.org/wiki/Cloud_gaming",
"http://store.steampowered.com/streaming/"
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} | Is External Processing Possible?
I there a way of connecting a computer to and external server in such a way that all processing usually done on the computer could be done on the server, and then the results displayed on the computer? Example: Using an external server to process a game of COD and play it on a netbook w... | [
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jan22 | Where did most of you learn all of this scientific knowledge? | askscience | {
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} | Where did most of you learn all of this scientific knowledge?
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5ult6o | AskScienceAMASeries: Hi Reddit! We’re NOAA scientists Jamison Smith and Ed Lyman. In celebration of #WhaleWeek and World Whale Day on Saturday, February 18, we’re here to talk about the whales we protect and the entanglement response teams that risk their safety to rescue them. Ask us anything! | Hi Reddit! I’m NOAA Fisheries scientist Jamison Smith. I am the NOAA Fisheries National Entanglement Response Program Coordinator and I oversee NOAA’s whale entanglement response teams. And I’m Ed Lyman, I serve as the large whale entanglement response coordinator for Hawaiian Islands Humpback Whale National Marine Sa... | askscience | {
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"http://www.nmfs.noaa.gov/pr/health/MMHSRP.html",
"http://sanctuaries.noaa.gov/news/nov15/whale-disentanglement.html",
"https://www.youtube.com/watch?v=gAR8cuOExrA",
"http://www.nmfs.noaa.gov/stories/2017/02/science_of_finding_whales.html",
"http://www.fisheries.noaa.gov/stories/2016/07... | {
"url": [
"http://www.bycatch.org/sites/default/files/Lobster_Gear_Report_0.pdf"
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} | AskScienceAMASeries: Hi Reddit! We’re NOAA scientists Jamison Smith and Ed Lyman. In celebration of #WhaleWeek and World Whale Day on Saturday, February 18, we’re here to talk about the whales we protect and the entanglement response teams that risk their safety to rescue them. Ask us anything!
Hi Reddit! I’m NOAA Fish... | [
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rbfl3 | Will opening a door darken a room? | Suppose you are trying to sleep in a small room with several doors and a lamp. It is hard to fall asleep because of the brightness of the lamp. Will opening the doors "darken" the room (the rooms on the other side of the doors are dark)? Will some of the photons now travel to the other room as opposed to bouncing of... | askscience | {
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"Yes, very slightly. Light that would have previously been reflected off the surface of the door will now move through to the adjacent dark room, lightening it by a very slight degr... | {
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} | Will opening a door darken a room?
Suppose you are trying to sleep in a small room with several doors and a lamp. It is hard to fall asleep because of the brightness of the lamp. Will opening the doors "darken" the room (the rooms on the other side of the doors are dark)? Will some of the photons now travel to the othe... | [
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8fz14e | Can you get Vitamid D from a large enough fire? | The sun is essentially a huge bonfire way way far away, so can a smaller fire that's closer provide us with Vitamin D? | askscience | {
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"url": []
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"https://i.imgur.com/Q3qDB07.jpg"
]
} | Can you get Vitamid D from a large enough fire?
The sun is essentially a huge bonfire way way far away, so can a smaller fire that's closer provide us with Vitamin D? | [
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4fn152 | PLOS Science Wednesday: Hi Reddit, we’re Eric C. Leuthardt, Joshua Shimony, and David Tran. We discovered the blood-brain barrier stays open after laser ablation surgery, creating opportunities for glioblastoma treatment, as described in PLOS ONE – Ask Us Anything! | Hi Reddit,
My name is Dr. Eric C. Leuthardt and I am professor of neurosurgery at [Washington University](_URL_1_). My research focuses on brain computer interfaces, advanced brain mapping and the development of new medical technologies. And my name is Joshua Shimony and I am an Associate Prof. of Neuroradiology at [W... | askscience | {
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"Hi Eric, Joshua and David, and... | {
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} | {
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"http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0148613",
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]
} | {
"url": [
"http://klotza.blogspot.com/2015/11/bursting-bubbles-breach-blood-brain.html",
"http://www.cancer.duke.edu/btc/modules/Research3/index.php?id=41"
]
} | PLOS Science Wednesday: Hi Reddit, we’re Eric C. Leuthardt, Joshua Shimony, and David Tran. We discovered the blood-brain barrier stays open after laser ablation surgery, creating opportunities for glioblastoma treatment, as described in PLOS ONE – Ask Us Anything!
Hi Reddit, My name is Dr. Eric C. Leuthardt and I am p... | [
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1vlehl | Is there a substance which would be more dangerous to handle when using rubber gloves? | I was just doing some cleaning with bleach and had a moment being amazed at all the things rubber can handle. So I wondered if there is something you shouldn't handle with rubber gloves specifically because it would react in some way that could cause serious harm. | askscience | {
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"url": [
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} | Is there a substance which would be more dangerous to handle when using rubber gloves?
I was just doing some cleaning with bleach and had a moment being amazed at all the things rubber can handle. So I wondered if there is something you shouldn't handle with rubber gloves specifically because it would react in some way... | [
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1jc9hm | Why do we do the order of operations in the way that we do? | I've been wondering...is the Order of Operations (the whole Parenthesis > Exponents > Multiply/Divide > Add/Subtract, and left > right) thing...was this just agreed upon? Mathematicians decided "let's all do it like this"? Or is this *actually* the right way, because of some...mathematical proof?
Ugh, sorry, I d... | askscience | {
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"https://en.wikipedia.org/wiki/Rule_of_inference",
"https://en.wikipedia.org/wiki/Commutative",
... | Why do we do the order of operations in the way that we do?
I've been wondering...is the Order of Operations (the whole Parenthesis > Exponents > Multiply/Divide > Add/Subtract, and left > right) thing...was this just agreed upon? Mathematicians decided "let's all do it like this"? Or is this *actually* the right way, ... | [
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yarc7 | So what evidence is AGAINST Evolution? | I know I'm going against the grain here, but I am generally curious. Off the top of my head, I can't really think of anything.
Note: I am not talking about abiogenesis. | askscience | {
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"> Note: I am not talking about abiogenesis.\n\nThis is worth addressing:\n\nThe theory of evolution says *nothing* about how life started. Not even a little bit.\n\nThe theory of evolution is all about how org... | {
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"http://www.millerandlevine.com/km/evol/DI/clot/Clotting.html",
"http://en.wikipedia.org/wiki/Irreducible_complexity#Blood_clotting_cascade",
"http://ww... | So what evidence is AGAINST Evolution?
I know I'm going against the grain here, but I am generally curious. Off the top of my head, I can't really think of anything. Note: I am not talking about abiogenesis. | [
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3uh0lq | How does one define a staight line? | I was taught that the definition of a straight line is the shortest distance between two points. What happens if these points are infinitely far apart? I assume that this is basically some kind of phallacy/ paradox type thing but yeah, lemme know please! | askscience | {
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]
} | How does one define a staight line?
I was taught that the definition of a straight line is the shortest distance between two points. What happens if these points are infinitely far apart? I assume that this is basically some kind of phallacy/ paradox type thing but yeah, lemme know please! | [
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3nmuvy | What would happen if there was an unbreakable rope tethering the earth to the moon? | The rope can neither be broken or unattached, how would this impact life on earth or the orbits of the moon/earth.
Edit/update : several comments have been asking how does the location of the tether affect the outcome? (ex: poles vs equator)
Edit 2: Secondary question : What if the "rope" was actually rigid and could... | askscience | {
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"http://imgur.com/bksaOv1",
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} | What would happen if there was an unbreakable rope tethering the earth to the moon?
The rope can neither be broken or unattached, how would this impact life on earth or the orbits of the moon/earth. Edit/update : several comments have been asking how does the location of the tether affect the outcome? (ex: poles vs equ... | [
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3n344u | If molecules of water were the size of the cherry, droplet would be size of the Earth. Is this true? | I read this somewhere, but it seems too mindblowing to be true. I mean, I know molecules are really smal, but come on... | askscience | {
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I read this somewhere, but it seems too mindblowing to be true. I mean, I know molecules are really smal, but come on... | [
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imgs0 | Stop apologizing for asking stupid questions | If it's something you're wondering about, there are probably a lot of other people wondering the same thing. This is the whole point of /r/AskScience. Someone will be happy to answer any legitimate science question you have.
EDIT: Ok, wow... people got opinions. It seems like the consensus is somewhere between "No suc... | askscience | {
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"> there are probably a lot of other people w... | {
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} | {
"url": []
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"url": [
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} | Stop apologizing for asking stupid questions
If it's something you're wondering about, there are probably a lot of other people wondering the same thing. This is the whole point of /r/AskScience. Someone will be happy to answer any legitimate science question you have. EDIT: Ok, wow... people got opinions. It seems lik... | [
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14pz6f | How much energy are you burning when you shake your legs passively (while sitting at a desk)? Over a period of hours, does it make a caloric difference? | As a drummer, I shake my legs nonstop when I'm studying... Especially this week (finals UGH).
edit: since so many people seem to care... I hit the gym 2~3 a week and get plenty of walking/running time every day as an ambulatory student without a car. | askscience | {
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} | How much energy are you burning when you shake your legs passively (while sitting at a desk)? Over a period of hours, does it make a caloric difference?
As a drummer, I shake my legs nonstop when I'm studying... Especially this week (finals UGH). edit: since so many people seem to care... I hit the gym 2~3 a week and g... | [
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1x3r17 | Does the flight from Europe and USA (and in the other way) lasts longer/shorter because of Earth movement beneath the plane? | askscience | {
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"http://en.wikipedia.org/wiki/Coriolis_effect#Rotating_sphere",
"http://en.wikipedia.org/wiki/Polar_route",
"http://www.bcavirtu... | Does the flight from Europe and USA (and in the other way) lasts longer/shorter because of Earth movement beneath the plane?
| [
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1pk55x | Why are we still using wind tunnels when designing something that needs to be aerodynamic,why can't we do that completely by software? What are the drawbacks of designing something in 3D then emulating the wind tunnel using software. | askscience | {
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"CFD programs have come LOOOOOOOONG way, but they still are based on approximations. The wind tunnel is an... | {
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"url": [
"http://en.wikipedia.org/wiki/Turbulence",
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"http://www.engineeringexchange.com/profiles/blogs/how-to-lose-races-with-cfd",
"http://www.symscape.com/blog/how-to-lose-f1-races-with-a-wind-tunnel-and-... | Why are we still using wind tunnels when designing something that needs to be aerodynamic,why can't we do that completely by software? What are the drawbacks of designing something in 3D then emulating the wind tunnel using software.
| [
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11tmmc | Can anyone be a scientist or do you have to have an official B.S. (Bachellor of Science) and publish a in a "peer-review" journal to be a scientist? | askscience | {
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"There is a major difference between these things: \n\n1) Doing Science\n\n2) Publishing Scientific Research\n\n3) Making a living as a Scientist \n\nI guess the first question is how you are defining scientist. If it's anyone... | {
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} | {
"url": []
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"url": []
} | Can anyone be a scientist or do you have to have an official B.S. (Bachellor of Science) and publish a in a "peer-review" journal to be a scientist?
| [
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s92n6 | Question about Evolution | I was reading a book called Sciencia, which is just a big book with a brief overview of a multitude of different scientific concepts from Math to Physics to Chemistry to Biology and one section mentioned a concept called convergent evolution. Basically it said that there are only a few design solutions that solve certa... | askscience | {
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"Ooh, I like this question. I think about it a lot.\n\nFirst of all, I'm going to assume that an alien organism will have similar biochemistry to ours: carbon based, uses water as a solvent, has some sort of macro molecule which can pass inf... | {
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} | Question about Evolution
I was reading a book called Sciencia, which is just a big book with a brief overview of a multitude of different scientific concepts from Math to Physics to Chemistry to Biology and one section mentioned a concept called convergent evolution. Basically it said that there are only a few design s... | [
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md54w | Why is it that sometimes when you are picking up or lifting something that is heavy, your body makes you scream, and in doing so, you feel as if it makes you stronger? | askscience | {
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} | {
"url": []
} | {
"url": [
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} | Why is it that sometimes when you are picking up or lifting something that is heavy, your body makes you scream, and in doing so, you feel as if it makes you stronger?
| [
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8khkhn | Are Monte Carlo simulations really necessary, considering that in order to set up the simulation, you need to know enough about the problem such that you can solve it analytically? | Consider the traditional MC simulation problem of simulating pi: you generate random points in a unit square and check to see if they lie inside or outside a unit circle. In order to run that simulation, you need to know the equation of the circle, which I would think imply that you already have the ability to compute... | askscience | {
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"> Consider the traditional MC simulation problem of simulating pi: you generate random points in a unit square and check to see if they lie inside or outside a unit circle. In orde... | {
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} | {
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} | Are Monte Carlo simulations really necessary, considering that in order to set up the simulation, you need to know enough about the problem such that you can solve it analytically?
Consider the traditional MC simulation problem of simulating pi: you generate random points in a unit square and check to see if they lie i... | [
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5lalah | What's something that was incurable 10 years ago which is curable now? | people actually like if their condition is incurable now, it's going to be that way for the rest of their life. How hopeless is it really? I know cancer has not been cured what about other things. Is there any decent chance that neuropathy will be cured soon? What has been cured in the last decade? | askscience | {
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"They invented [sofosbuvir](_URL_0_) and basically cured hepatitis C virus. Has been very controversial over the cost... a 12-week course of treatment costs about $84,000. But this gives a 95% success rate, so they are basically selling a pr... | {
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} | {
"url": [
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"http://www.bloodjournal.org/content/108/11/560?sso-checked=true",
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} | What's something that was incurable 10 years ago which is curable now?
people actually like if their condition is incurable now, it's going to be that way for the rest of their life. How hopeless is it really? I know cancer has not been cured what about other things. Is there any decent chance that neuropathy will be c... | [
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opxcg | When did human beings start exercising? | From an anthropological standpoint, when did humans start developing and using exercises to improve physical fitness? When did we discover that repetitive motion + resistance = growth? | askscience | {
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"Physical activity for the sake... | {
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"http://www.reddit.com/r/askhistorians",
"http://www.unm.edu/~lkravitz/Article%20folder/history.html"
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} | When did human beings start exercising?
From an anthropological standpoint, when did humans start developing and using exercises to improve physical fitness? When did we discover that repetitive motion + resistance = growth? | [
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n78zs | How good were our ancestors at keeping track of time in previous centuries? Is it definitely 2011? | Nowadays with everyone constantly in communication, it'd be pretty hard to add a day here or a week there, but are we certain that dates were kept properly throughout history? Have changes in what we consider to be a month or a year been taken into account when calculating the current date? | askscience | {
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"There's actually a theory called the Phantom Time hypothesis that the dark ... | {
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"url": [
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"http://en.wikipedia.org/wiki/Julian_calendar#Leap_year_error"
]
} | How good were our ancestors at keeping track of time in previous centuries? Is it definitely 2011?
Nowadays with everyone constantly in communication, it'd be pretty hard to add a day here or a week there, but are we certain that dates were kept properly throughout history? Have changes in what we consider to be a mont... | [
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to32i | how do microchips know time? | I know wrist watches use a piezo quartz vibrating to maintain time. But how do other chips, from the processors in our computers to more simple chips that might just make an LED in a circuit flash, work out delays and time? | askscience | {
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"Crystal oscillators\n[Wikipedia](_URL_1_)\n > A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric ma... | {
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"url": [
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"http://www.reddit.com/r/askscience/comments/to32i/how_do_microchips_know_time/c4oa5d2",
"http://en.wikipedia.org/wiki/Interrupt",
"http://en.wikipedia.org/wiki/Crysta... | how do microchips know time?
I know wrist watches use a piezo quartz vibrating to maintain time. But how do other chips, from the processors in our computers to more simple chips that might just make an LED in a circuit flash, work out delays and time? | [
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n4pfg | How can we measure the absolute speed of something? | As far as I understand everything is moving. Our solar system is moving, our galaxy is moving. So basically we have no point of reference to determine what our absolute speed is. | askscience | {
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"url": [
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} | How can we measure the absolute speed of something?
As far as I understand everything is moving. Our solar system is moving, our galaxy is moving. So basically we have no point of reference to determine what our absolute speed is. | [
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mkeyo | Why do our brains know how far to throw a ball, and where to catch that ball. | I'm amazed by these two little features because they seem to be almost innate abilities. | askscience | {
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"url": [
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} | Why do our brains know how far to throw a ball, and where to catch that ball.
I'm amazed by these two little features because they seem to be almost innate abilities. | [
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1010yh | I've always had outdoor cats and i never understood something. What compels them to come back home? | askscience | {
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"Is it possible to convince a cat t... | {
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"http://zoopsy.free.fr/veille_biblio/social_organization_... | I've always had outdoor cats and i never understood something. What compels them to come back home?
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3oub6x | How fast do I have to go to reach Alpha Centauri in 4.37 years (on my clock)? | Alpha Centauri is 4.37 lightyears distant. If I go at 0.01 x *c*, then it woult take me 437 years, because Lorentz contractions are not significant.
If I go at 0.99999999 *c* I would arrive in just a few days, since in my reference frame, the distance would shrink and I'd get there quicker.
How fast do I go to get th... | askscience | {
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"This is a question about relativistic [proper velocity](_URL_0_).\n\nFor easy mode: assume you're using convenient units where speed is measured as a fraction of c, and time and distance use the same units (eg ... | {
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"url": []
} | {
"url": [
"https://en.wikipedia.org/wiki/Proper_velocity",
"http://math.ucr.edu/home/baez/physics/Relativity/SR/rocket.html",
"https://www.reddit.com/r/askscience/comments/3js7t7/question_about_relativity_on_a_trip_to_alpha/",
"http://www.wolframalpha.com/input/?i=Solve+Cosh%28z%29+%3D+1%2Bz+for+z+%3... | How fast do I have to go to reach Alpha Centauri in 4.37 years (on my clock)?
Alpha Centauri is 4.37 lightyears distant. If I go at 0.01 x *c*, then it woult take me 437 years, because Lorentz contractions are not significant. If I go at 0.99999999 *c* I would arrive in just a few days, since in my reference frame, the... | [
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llsry | Is the extrovert/introvert thing supported by science? Or is it just another pop-psych myth? | I'm not a scientist, but it seems very oversimplified to me. Is this dichotomy of personality actually supported by evidence, or is it just another attempt to categorize ourselves? | askscience | {
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"You are artificially creating a dichotomy and then you're using it to disprove the \"extrovert/introvert thing\" as an oversimplification, when there are multiple degrees of extroversion/introversion. Is the di... | {
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"url": []
} | Is the extrovert/introvert thing supported by science? Or is it just another pop-psych myth?
I'm not a scientist, but it seems very oversimplified to me. Is this dichotomy of personality actually supported by evidence, or is it just another attempt to categorize ourselves? | [
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408j11 | Does every pure chemical have a triple point? | A triple point is a temperature and pressure where the substance is simultaneously a solid, liquid and a gas
Are triple points for some substances predicted theoretically but hard to test? | askscience | {
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"url": [
"http://i.imgur.com/v6LDmuB.gif"
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} | Does every pure chemical have a triple point?
A triple point is a temperature and pressure where the substance is simultaneously a solid, liquid and a gas Are triple points for some substances predicted theoretically but hard to test? | [
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xvc6o | Whether man-made, natural or extra-terrestrial in source, what was the largest energetic event Earth has ever witnessed in joules? | 8+ VEI Super Volcanoes, 9.0+ Earthquakes, Nuclear Weapons, Meteor Impacts, etc. -- what event holds the record for the most joules of energy output on Earth? | askscience | {
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"If you don't count the formation of the planet itself, then probably the [impact that created the Moon](_URL_0_). If I'm plugging in the numbers correctly, the energy comes out to... | {
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"url": [
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"http://en.wikipedia.org/wiki/List_of_impact_craters_on_Earth",
"http://en.wikipedia.org/wiki/Giant_impact... | Whether man-made, natural or extra-terrestrial in source, what was the largest energetic event Earth has ever witnessed in joules?
8+ VEI Super Volcanoes, 9.0+ Earthquakes, Nuclear Weapons, Meteor Impacts, etc. -- what event holds the record for the most joules of energy output on Earth? | [
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4mskhx | AskScience AMA Series: I am Dr. Laura Kloepper, a biologist who studies the emergence and echolocation dynamics of large bat cave colonies. This summer I am traveling and camping with two female students as we record bats across the Southwest. Ask Me Anything! | Hi Reddit! I am Dr. Laura Kloepper, an Assistant Professor of Biology at Saint Mary's College in Notre Dame, Indiana. My research involves using audio, video, and thermal imagery to understand the emergence, flight, and echolocation dynamics of large (1 million +) colonies of Mexican Free-tailed bats. These bats leave ... | askscience | {
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"url": [
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"https://en.wikipedia.org/wiki/Nycteribiidae",
"https://www.sciencenews.org/blog/wild-things/vampire-bats-share-blood-make-friends",
"http://dobrador.com/wp-content/uploads/2016/04/bat-wings-skin-stretched-between-elongate... | AskScience AMA Series: I am Dr. Laura Kloepper, a biologist who studies the emergence and echolocation dynamics of large bat cave colonies. This summer I am traveling and camping with two female students as we record bats across the Southwest. Ask Me Anything!
Hi Reddit! I am Dr. Laura Kloepper, an Assistant Professor ... | [
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1v3jo8 | High thermal, low electric conductivity in solids? | I am wondering what solids have very high thermal conductivity and very low electric. I am interested in very good heat sinks in a place where electric conductivity would be a problem. | askscience | {
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I am wondering what solids have very high thermal conductivity and very low electric. I am interested in very good heat sinks in a place where electric conductivity would be a problem. | [
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ov1ey | During early ambiogenesis is there really a need for stable lipid bilayer enclosures or can they extremely dynamic? | My basic conception of early ambiogenesis is that early nucleotides were free floating in the "soup" and dynamic lipid bilayers would be rapidly forming and falling apart spontaneously. So the early life would basicly be more akin to a viral soup then a cellular soup with the nucleotides only transiently existing wit... | askscience | {
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"I am not a biologist, but here are my thoughts. Hopefully someone more knowledgeable on the topic will come along. \n\nThere would need to be some sort of a boundary. It wouldn't necessarily have to be made of lipids perhaps it could be as ... | {
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"url": [
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} | During early ambiogenesis is there really a need for stable lipid bilayer enclosures or can they extremely dynamic?
My basic conception of early ambiogenesis is that early nucleotides were free floating in the "soup" and dynamic lipid bilayers would be rapidly forming and falling apart spontaneously. So the early life ... | [
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2wjonl | XKCD's "Fundamental Forces" isn't funny, it's sad. Can you do better? | Today's [XKCD cartoon](_URL_0_) accurately depicts the sad state of explanations of the fundamental forces. For goodness sake, I majored in Physics and got a masters in a related field, and I still couldn't give a better explanation than the one in that comic. (Except that I could explain Maxwell's equations.)
Can any... | askscience | {
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"url": [
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} | XKCD's "Fundamental Forces" isn't funny, it's sad. Can you do better?
Today's [XKCD cartoon](_URL_0_) accurately depicts the sad state of explanations of the fundamental forces. For goodness sake, I majored in Physics and got a masters in a related field, and I still couldn't give a better explanation than the one in t... | [
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17ve8d | As a reformed creationist I am now thoroughly convinced that evolution is true. I do have one question though. | Why is it that we don't see information being added to the genome? We always hear about "dormant genes being reactivated" or something along those lines, but where did the genes come from? Why don't we constantly see new information in subsequent generations of animals? If we do, where can I read about it? | askscience | {
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"http://en.wikipedia.org/wiki/Nylon-eating_bacteria",
"http://youtu.be/kp1bZEU... | As a reformed creationist I am now thoroughly convinced that evolution is true. I do have one question though.
Why is it that we don't see information being added to the genome? We always hear about "dormant genes being reactivated" or something along those lines, but where did the genes come from? Why don't we constan... | [
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1fhhwr | I've read a lot of speculation about the future of the world's water supply. How serious is the issue, and what is likely to occur over the next decades? | askscience | {
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"The main thing to remember about this is the interconnectedness of resources in general. There's plenty of water in the world; it's just not potable. The availability of cheap energy would solve this issue, as ... | {
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} | I've read a lot of speculation about the future of the world's water supply. How serious is the issue, and what is likely to occur over the next decades?
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745cng | Today I saw the equation "PV=nRT". Why do the variables all match exactly? Why don't we have to multiply R by 1.25? Or P by 0.5? | It boggles my mind that everything is so.... perfect. Did n and R only come about because of this equation, and so were given arbitrary values that caught on? | askscience | {
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} | Today I saw the equation "PV=nRT". Why do the variables all match exactly? Why don't we have to multiply R by 1.25? Or P by 0.5?
It boggles my mind that everything is so.... perfect. Did n and R only come about because of this equation, and so were given arbitrary values that caught on? | [
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2bu7qv | Say that two "perfect" squares are diagonal to each other. Are they touching? | [Here](_URL_0_) is a visual of what I mean.
Say that the squares are perfectly straight, even down on the atomic and plank scales.
You can zoom in further and further, but no matter how far in you go, it'll look the same. | askscience | {
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"url": [
"http://i.imgur.com/ExEZVsJ.png"
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"url": []
} | Say that two "perfect" squares are diagonal to each other. Are they touching?
[Here](_URL_0_) is a visual of what I mean. Say that the squares are perfectly straight, even down on the atomic and plank scales. You can zoom in further and further, but no matter how far in you go, it'll look the same. | [
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31tcim | Why do people so confidently dismiss ideas that contradict thermodynamics, relativity, etc, when we already know that until a grand unified theory is discovered, these theories are incomplete at best? | Of course most of the people talking about perpetual motion and zero point energy are obvious lunatics, I guess what I'm really wondering is, are there are any big contradictory theories that are actually respected and studied seriously? | askscience | {
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"url": [
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Of course most of the people talking about perpetual motion and zero point energy are obvious lunatics, I guess what I'... | [
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7hh5n0 | AskScience AMA Series: We are working to build precise atomic clocks that could fit inside your smartphone. Ask Us Anything! | Atomic clocks are among the most precise scientific instruments ever made, and play an important role in advanced navigation, secure communication, and radar technology. Kyriakos Porfyrakis and Edward Laird of the University of Oxford are working on building a hyperprecise atomic clock that could fit on a chip inside a... | askscience | {
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]
} | {
"url": []
} | AskScience AMA Series: We are working to build precise atomic clocks that could fit inside your smartphone. Ask Us Anything!
Atomic clocks are among the most precise scientific instruments ever made, and play an important role in advanced navigation, secure communication, and radar technology. Kyriakos Porfyrakis and E... | [
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zrvwq | How is it possible for a lab to produce 10 Terawatts, if the world consumes only 15 Terawatts? Is there something I'm overlooking? | Intellectual Ventures is a notorious patent troll, and they also built a lab where they come up with inventions. On their lab website, one of their claims is ["10 Terawatts – Instantaneous optical power we can achieve with our three femtosecond lasers and OPO, comparable to a nuclear blast."](_URL_1_), yet I didn't rea... | askscience | {
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"It's the difference between power and energy. Well, they sustain that power only for a femtosecond =10^-15 seconds times 10*10^12 Watt = 0.001 Joule. It takes 4800 joules to heat up a coffee one (1) degree. So they really don't use up a lo... | {
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} | {
"url": [
"http://www.wolframalpha.com/input/?i=10+terrawats+*+3+femtoseconds"
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} | How is it possible for a lab to produce 10 Terawatts, if the world consumes only 15 Terawatts? Is there something I'm overlooking?
Intellectual Ventures is a notorious patent troll, and they also built a lab where they come up with inventions. On their lab website, one of their claims is ["10 Terawatts – Instantaneous ... | [
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1vo0kl | Does anything happen when you point lasers at each other? | Say you have three lasers (blue, green and red) and you point them in a way that beams hit each other at an exact point. Could that break the laser beams and create a predetermined color (based on the intensities of each of the laser beams)?
Sorry if my question sounds confusing, and sorry i have zero background in op... | askscience | {
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"http://en.wikipedia.org/wiki/Pair_production",
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} | Does anything happen when you point lasers at each other?
Say you have three lasers (blue, green and red) and you point them in a way that beams hit each other at an exact point. Could that break the laser beams and create a predetermined color (based on the intensities of each of the laser beams)? Sorry if my question... | [
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n72st | Using biology to reduce drag | In theory, would I be able to reduce drag using 'fish scale' like coverings? Particularly towards the rear of a vehicle? Would strategically placed 'scales' be able to reduce drag (possibly, like a golf ball's dimples?) or additionally increase downforce?
Additionally, would mechanized scales, able to be computer co... | askscience | {
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"url": [
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} | Using biology to reduce drag
In theory, would I be able to reduce drag using 'fish scale' like coverings? Particularly towards the rear of a vehicle? Would strategically placed 'scales' be able to reduce drag (possibly, like a golf ball's dimples?) or additionally increase downforce? Additionally, would mechanized scal... | [
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jioh7 | 49,999 readers! Because reading AskScience was also cool before hitting 50k! | Alrighty, we're officially pretty darn huge by now. 55th largest subreddit, half-way to the big 100,000. Excellent!
Since the last State of AskScience post, we have seen a few exciting changes:
* Slim and improved side-bar, enabled by the nifty [faq](_URL_2_) that explains our house rules, mission statement, and so o... | askscience | {
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"Another thing:\n\n**AskScience is not LikeImFive**\n\nDon't just post questions like \"explain acid-base ... | {
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} | {
"url": [
"http://www.facebook.com/pages/rAskScience/128802790545333?sk=wall",
"https://plus.google.com/117310850002483290031/about",
"http://www.reddit.com/help/faqs/AskScience"
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"url": []
} | 49,999 readers! Because reading AskScience was also cool before hitting 50k!
Alrighty, we're officially pretty darn huge by now. 55th largest subreddit, half-way to the big 100,000. Excellent! Since the last State of AskScience post, we have seen a few exciting changes: * Slim and improved side-bar, enabled by the nift... | [
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1mtnqy | Bayesian approach to criminal justice | As I understand it, Bayesian reasoning uses past statistics as a given and then deduces the probability of a future event.
1. Is this a fair assessment of the theory?
2. Can it be used to determine guilt of an accused party in a specific situation? Example: If I know that when a particular type of crime is reported... | askscience | {
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"1. Generally speaking, yes, albeit somewhat of an over simplification. \n\n2. I think the operative word in this question is 'determine'. Determining guilt for any p... | {
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} | Bayesian approach to criminal justice
As I understand it, Bayesian reasoning uses past statistics as a given and then deduces the probability of a future event. 1. Is this a fair assessment of the theory? 2. Can it be used to determine guilt of an accused party in a specific situation? Example: If I know that when a pa... | [
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1qwqfu | What does it mean when a series converges? Laymans terms. | I know that if you use it in the context of area under a curve that when it is convergent, it has a finite area. When it is divergent then it has an infinite area. Thanks guys. | askscience | {
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} | What does it mean when a series converges? Laymans terms.
I know that if you use it in the context of area under a curve that when it is convergent, it has a finite area. When it is divergent then it has an infinite area. Thanks guys. | [
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c6dj8l | Why are interplanetary slingshots using the sun impossible? | Wikipedia only says regarding this "because the sun is at rest relative to the solar system as a whole". I don't fully understand how that matters and why that makes solar slingshots impossible.
I was always under the assumption that we could do that to get quicker to Mars (as one example) in cases when it's on the oth... | askscience | {
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"https://www.centauri-dreams.org/2015/08/14/a-science-critique-of-aurora-by-kim-stanley-robinson/"
]
} | Why are interplanetary slingshots using the sun impossible?
Wikipedia only says regarding this "because the sun is at rest relative to the solar system as a whole". I don't fully understand how that matters and why that makes solar slingshots impossible. I was always under the assumption that we could do that to get qu... | [
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5q3n25 | Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology | Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on **Biology, Chemistry, Neuroscience, Medicine, Psychology**
Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big o... | askscience | {
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"text": [
"Do we know enough about the brain to say whether reading someone's thoughts or memories might be theoretically possible one day? I know we can see electrochemical firings but can we know more about what someone... | {
"url": []
} | {
"url": [
"http://www.reddit.com/r/askscience/search?q=flair%3A%27meta%27&restrict_sr=on&sort=new&t=all",
"http://www.reddit.com/r/askscience/wiki/index#wiki_answering_askscience",
"https://www.reddit.com/r/askscience/comments/3exo6p/askscience_panel_of_scientists_xiii/"
]
} | {
"url": []
} | Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on **Biology, Chemistry, Neuroscience, Medicine, Psychology** Do you have a question within these topics you weren't sure was worth submitting? Is something a... | [
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4d8khh | Why do the walls in this Redbull can start to buckle outward at even locations under a hydraullic press? (Link inside) | [deleted] | askscience | {
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"Think of a piece of paper on a table, if you push together from both ends, it pops up in the middle. Now think of doing this inside a clear plastic box so the paper can only pop up an inch or so. After the first wrinkle gets as large as it ... | {
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"url": [
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} | Why do the walls in this Redbull can start to buckle outward at even locations under a hydraullic press? (Link inside)
[deleted] | [
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wzh07 | How much is the "lag" in the real world? | When playing multiplayer video games, we often experience lag. I think it can be defined as the length of time since the information is sent from the server until it is received by the computer being played on. The player then experiences the game a few milliseconds after it actually happens.
I was wondering how much ... | askscience | {
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} | How much is the "lag" in the real world?
When playing multiplayer video games, we often experience lag. I think it can be defined as the length of time since the information is sent from the server until it is received by the computer being played on. The player then experiences the game a few milliseconds after it act... | [
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zau7n | Does constructal theory have any scientific merit? | I just came across a book *Design in Nature* that gave me a new perspective how systems evolve. Is it a useful model, or is it just a meaningless abstraction? Here's a wiki page about it: _URL_0_ | askscience | {
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} | {
"url": []
} | Does constructal theory have any scientific merit?
I just came across a book *Design in Nature* that gave me a new perspective how systems evolve. Is it a useful model, or is it just a meaningless abstraction? Here's a wiki page about it: _URL_0_ | [
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1fns5w | Can someone tell me what I was looking at last night? | Hey guys, I hope this question is ok. Last night around 8:15 PM I was outside and at about 298 deg NW (according to my Iphone compass) and about 15 deg above the horizon (my best guess), there was an extremely bright "star" in the sky. Was this a planet? Also, I live just NE of Atlanta, Ga. I tried to google for any in... | askscience | {
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"The \"brightest star\" in the Northern sky right now is ~~Jupiter~~Venus.\n\nI will double check the positioning in Stellarium for you.\n\nEDIT: Jupiter was just set... | {
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} | {
"url": []
} | {
"url": [
"http://i.imgur.com/1XocWwl.png"
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} | Can someone tell me what I was looking at last night?
Hey guys, I hope this question is ok. Last night around 8:15 PM I was outside and at about 298 deg NW (according to my Iphone compass) and about 15 deg above the horizon (my best guess), there was an extremely bright "star" in the sky. Was this a planet? Also, I liv... | [
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4stb2r | Why do many lip and/or skin care products have chemicals such as petrolatum and paraffin in them? | At face value it seems strange to have these chemicals in skin care products, but I am interested to see what redditors have to say. Also, if you could perhaps highlight some of the positives and negatives of the use of these chemicals on the body. Thanks | askscience | {
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"url": []
} | {
"url": [
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} | Why do many lip and/or skin care products have chemicals such as petrolatum and paraffin in them?
At face value it seems strange to have these chemicals in skin care products, but I am interested to see what redditors have to say. Also, if you could perhaps highlight some of the positives and negatives of the use of th... | [
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rhax5 | My 14yr old cousin, always has physics ideas. He put together this time field of matter hypothesis. How can I help him further with his interest? | askscience | {
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} | {
"url": []
} | {
"url": [
"http://lesswrong.com/lw/j8/the_crackpot_offer/"
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} | My 14yr old cousin, always has physics ideas. He put together this time field of matter hypothesis. How can I help him further with his interest?
| [
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j800j | Can someone explain Aristotle's wheel paradox to me? | It was mentioned in another [thread](_URL_1_) as Galileo's paradox of the smaller and larger circle, but there was no explanation given, and I really can't wrap my head around it.
[Wolfram Mathworld](_URL_0_) has a technical explanation involving the "cardinality of the continuum", but has no clear explanation of wha... | askscience | {
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"url": []
} | {
"url": [
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]
... | {
"url": []
} | Can someone explain Aristotle's wheel paradox to me?
It was mentioned in another [thread](_URL_1_) as Galileo's paradox of the smaller and larger circle, but there was no explanation given, and I really can't wrap my head around it. [Wolfram Mathworld](_URL_0_) has a technical explanation involving the "cardinality of ... | [
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za3t6 | How much salt would I need to be able to float in my bathtub as if it were the Dead sea, would it work? | 1. Can I use kitchen salt?
2. Why would it work?
3. Why wouldn't it work?
4. If the answer to #2 is no, why does it work in the Dead sea? | askscience | {
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"url": [
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"http://io9.com/5798844/why-so-many-people-drown-in-the-dead-sea",
"http://scienceprojectideasforkids.com/wp-content/uploads/2010/05/Solubi... | How much salt would I need to be able to float in my bathtub as if it were the Dead sea, would it work?
1. Can I use kitchen salt? 2. Why would it work? 3. Why wouldn't it work? 4. If the answer to #2 is no, why does it work in the Dead sea? | [
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o90h6 | Are there any cultures with 3 or 5 directions used for navigation or cartography? | Is it always 4 (i.e. N S E W)?
After all, the Sun rarely rises or sets exactly East or West. | askscience | {
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"http://books.google.co.in/books?id=4XxHNPYW9O... | Are there any cultures with 3 or 5 directions used for navigation or cartography?
Is it always 4 (i.e. N S E W)? After all, the Sun rarely rises or sets exactly East or West. | [
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83om4k | Is there a type of rock that can be bent like a metal? | askscience | {
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} | Is there a type of rock that can be bent like a metal?
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89yh9m | Why did all the lithium end up in Chile? | askscience | {
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"url": [
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"https://www.telegraph.co.uk/travel/arts-and-culture/best-star-wars-filming-locations/salar-de-uyuni/",
"https://www.google... | Why did all the lithium end up in Chile?
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12nvhl | It is sometimes stated that humans have more "foreign" cells in their body than native ones. Is this a scientific correct statement? | Educated guess or original research?
thanks a lot | askscience | {
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"There are 10x more bacterial cells in your body than eukaryotic cells. Many of these bacterial cells have been shown to perform functions that are not only help you, but protect you from disease. Google the Human Microbiome Project.",
... | {
"url": []
} | {
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} | {
"url": []
} | It is sometimes stated that humans have more "foreign" cells in their body than native ones. Is this a scientific correct statement?
Educated guess or original research? thanks a lot | [
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1q16hw | I'm 32. Is there a single cell, or even molecule, left in my body that was there when I was born or am I a completely physically different organism from who I was as an infant? | Have all original molecules in my body from birth been replaced by now or do some remain? If they've all been replaced, approximately how often does this occur in a human lifespan, rendering one a completely different physical being from who we once were aside from the ties of continuity? | askscience | {
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"http://www.newscientist.com/article/dn23665-nuclear-bomb-tests-reveal-brain-regeneration-in-humans.html",
"http://en.wikipedia.org/wiki/Ship_of_Theseus",
"http://askanaturalist.com/do-we-replace-our-cells-every-7-or-10-years/",
"h... | I'm 32. Is there a single cell, or even molecule, left in my body that was there when I was born or am I a completely physically different organism from who I was as an infant?
Have all original molecules in my body from birth been replaced by now or do some remain? If they've all been replaced, approximately how often... | [
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11r9gl | This person claims it is possible to make a petrol-like hydrocarbon fuel from thin air and water. Is there the remotest chance that this is possible? | The video can be seen here
_URL_0_
Unlike the usual crackpots, this individual at least seems to be personally wealthy and has gathered a significant team around him rather than being some loner working in a shed (for what that's worth).
What do the esteemed minds of /r/askscience make of this? | askscience | {
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"Yes! This is the area of my research in catalysis. The idea is to make catalysts to help convert CO2 to CO (carbon monoxide), and then use the Fischer-Tropsch process (_URL_0_) to build higher hydrocarbons. \n\nI didn't see t... | {
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"url": [
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} | This person claims it is possible to make a petrol-like hydrocarbon fuel from thin air and water. Is there the remotest chance that this is possible?
The video can be seen here _URL_0_ Unlike the usual crackpots, this individual at least seems to be personally wealthy and has gathered a significant team around him rath... | [
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q3eub | what exactly goes on at the boundary of the atmosphere and space? | Is the threshold sharp, or does the atmosphere gradually fade out? The fact that air just stops baffles me. Thanks in advance. | askscience | {
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} | {
"url": []
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"url": []
} | what exactly goes on at the boundary of the atmosphere and space?
Is the threshold sharp, or does the atmosphere gradually fade out? The fact that air just stops baffles me. Thanks in advance. | [
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7xhb46 | What would happen if a voltage was applied to a superconductor in a ring shape and then have the voltage source removed? Would the electrons continue to flow forever in a loop? | Based on the limited knowledge and understanding I have, it would seem that an electrical current would be able to flow indefinitely due to the lack of resistance, is this the case? If not, how could this theoretically be done? | askscience | {
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"https://www.youtube.com/watch?v=Ri_4dDvcZeM",
"https://youtu.be/9hMp65SzyTU",
"https:/... | What would happen if a voltage was applied to a superconductor in a ring shape and then have the voltage source removed? Would the electrons continue to flow forever in a loop?
Based on the limited knowledge and understanding I have, it would seem that an electrical current would be able to flow indefinitely due to the... | [
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lqutn | Why don't we ever seem to get sick from two things at once? | I guess what Im trying to say is, lets say I have the Flu....or a Cold or w/e bug/virus is going around.
How come in my weakened state that im not infected by a ton of other viruses. It "seems" like it'd make you MORE prone, but I dont think I or anyone i've known has ever gotten sick by more than one thing at a time.... | askscience | {
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"http://en.wikipedia.org/wiki/HIV",
"http://en.wikipedia.org/wiki/Paul_farmer",
"http://en.wikipedia.org/wiki/Secondary_infection#... | Why don't we ever seem to get sick from two things at once?
I guess what Im trying to say is, lets say I have the Flu....or a Cold or w/e bug/virus is going around. How come in my weakened state that im not infected by a ton of other viruses. It "seems" like it'd make you MORE prone, but I dont think I or anyone i've k... | [
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6fspnm | I have recently come across the notion of "Nice guy syndrome"; is this a well established concept in current psychological thinking or it fringy? | [removed] | askscience | {
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"url": [
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} | I have recently come across the notion of "Nice guy syndrome"; is this a well established concept in current psychological thinking or it fringy?
[removed] | [
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1wrwt7 | Open Source distributions, how are viruses prevented from being accidentally distributed? | *edit: Thanks to everyone who has responded. This thread explained what I couldn't quite put my finger on. Thanks all!*
This goes for every kind of open source program/application/operating system/etc. Since ***ALL*** the code to a program is open to view, couldn't someone pick it apart, find the vulnerabilities, and ... | askscience | {
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} | {
"url": []
} | {
"url": [
"http://searchsecurity.techtarget.com/news/890836/Dont-dismiss-possibility-of-malicious-code-on-Linux",
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]
} | Open Source distributions, how are viruses prevented from being accidentally distributed?
*edit: Thanks to everyone who has responded. This thread explained what I couldn't quite put my finger on. Thanks all!* This goes for every kind of open source program/application/operating system/etc. Since ***ALL*** the code to ... | [
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japks | Is it possible for a surface to reflect 100% of the light that hits it? | doesn't have to be visible light | askscience | {
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"http://www.youtu... | Is it possible for a surface to reflect 100% of the light that hits it?
doesn't have to be visible light | [
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55cf5u | Are there numbers outside of C? If so, is there an ensemble including every other number ensemble we know? | Just started learning about complex numbers in math class in high school, and asked my teacher if C included all the numbers we know, and she told me it doesn't, but she can't really tell me more about it. I asked the same question to my brother who's in studying math in university, and he told me the same thing.
So, w... | askscience | {
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"https://en.wikipedia.org/wiki/P-adic_order",
"https://en.wikipedia.org/wiki/Surreal_number"... | Are there numbers outside of C? If so, is there an ensemble including every other number ensemble we know?
Just started learning about complex numbers in math class in high school, and asked my teacher if C included all the numbers we know, and she told me it doesn't, but she can't really tell me more about it. I asked... | [
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uf197 | Reading the 'fan theories' thread from a few days ago made me wonder, is there any truth to the idea of heavily traumatized or comatose people inventing alternate realities to "cope" with their state? | Many of the theories were based around the idea of someone being traumatized by an initial event, with an extremely intricate and complicated reality invented within the mind of the individual to cope with that trauma. Is there any scientific evidence of the human brain actually inventing extremely intricate realities ... | askscience | {
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"url": [
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"http://en.wikipedia.org/wiki/Capgras_delusion",
"http://www.mdconsult.com/das/article/body/337432792-2/jorg=journal&source=&... | Reading the 'fan theories' thread from a few days ago made me wonder, is there any truth to the idea of heavily traumatized or comatose people inventing alternate realities to "cope" with their state?
Many of the theories were based around the idea of someone being traumatized by an initial event, with an extremely int... | [
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24qqny | Does telling a child that they have to finish all their food, even if they're full, predispose them to being overweight or obese? | I feel like so many parents are always telling their children "One more bite before you can leave the table" or something along those lines. I'm not talking about finishing your vegetables, but just food (even an unhealthy dinner). The thought process seems to be that they think their child isn't eating enough to grow.... | askscience | {
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} | Does telling a child that they have to finish all their food, even if they're full, predispose them to being overweight or obese?
I feel like so many parents are always telling their children "One more bite before you can leave the table" or something along those lines. I'm not talking about finishing your vegetables, ... | [
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440dpk | Let's say I put a steel beam 1000 feet in the air above the earth, and this beam goes all the way around the world until it comes back and connects with it's original point, making a perfect circle. Assuming there is no support structure, would this steel beam levitate above the earth? | Hopefully this is the right sub for this! | askscience | {
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} | Let's say I put a steel beam 1000 feet in the air above the earth, and this beam goes all the way around the world until it comes back and connects with it's original point, making a perfect circle. Assuming there is no support structure, would this steel beam levitate above the earth?
Hopefully this is the right sub f... | [
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4pgd5k | Science AMA Series: Hi, I’m Dr. Kerry Assil, Eye Surgeon For The LA Kings And Founder Of The Assil Eye Institute, AMA! | Hi reddit!
I’m an [eye surgeon](_URL_0_), [researcher](_URL_1_) and lecturer who has worked with the LA Lakers, Kings, numerous other Gold-metal athletes and A-list celebrities.
I have spent the last 20+ years of my career working with the most advanced and cutting edge technologies to improve vision and eye health... | askscience | {
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"url": [
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"http://www.retinalphysician.com/articleviewer.aspx?articleID=113743",
"http://www.angio.org/"
]
} | Science AMA Series: Hi, I’m Dr. Kerry Assil, Eye Surgeon For The LA Kings And Founder Of The Assil Eye Institute, AMA!
Hi reddit! I’m an [eye surgeon](_URL_0_), [researcher](_URL_1_) and lecturer who has worked with the LA Lakers, Kings, numerous other Gold-metal athletes and A-list celebrities. I have spent the last 2... | [
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njyc9 | Do face moisturizers really help to keep me young looking? I don't trust the "clinical trials" that the manufacturers mention in their ads. | I feel like I should moisturize the left half of my face for the next 10 years, leaving the right side as a control. But I am hoping that some real research has already been done?
I am a 39 year old male.
Edit: Are there any ingredients that I should look for, or avoid? What about sun block? | askscience | {
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"All moisturisers are essentially grease for your face which will smooth over roughness or wrinkles. Your skin will stay the same underneath and there's nothing you c... | {
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"url": []
} | {
"url": [
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"http://en.wikipedia.org/wiki/Ceramide",
"http://www.ewg.org/skindeep/browse/anti-aging/",
"http://www.ewg.org/skindeep/top-tips-fo... | Do face moisturizers really help to keep me young looking? I don't trust the "clinical trials" that the manufacturers mention in their ads.
I feel like I should moisturize the left half of my face for the next 10 years, leaving the right side as a control. But I am hoping that some real research has already been done? ... | [
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4mi4y0 | If an isolated system reach a microstate where it has a macroscopic velocity, doesn't it violate the law of conservation of energy? | I know this is very, very, very unlikely edge case, but let's say that an isolated system, with an incredible luck, reach a microstate where the direction of their microscopic speed synchronise, in such a way that the system has a macroscopic speed. This mean we have a ΔE=ΔEc (ΔU=0 and ΔEp=0 too), yet the system is iso... | askscience | {
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"The mistake in your reasoning is in the process from going from a stationary system to your edge case. That macrostate can never happen, for fundamental (not probabilistic) reasons. Consider the ... | {
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} | {
"url": []
} | {
"url": []
} | If an isolated system reach a microstate where it has a macroscopic velocity, doesn't it violate the law of conservation of energy?
I know this is very, very, very unlikely edge case, but let's say that an isolated system, with an incredible luck, reach a microstate where the direction of their microscopic speed synchr... | [
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845gyn | Are phonons a type of electromagnetic wave? | My chem prof keeps referring to sound waves/phonons as electromagnetic waves but I always thought they were purely kinetic/due to pressure differential and not electromagnetic.
If they are electromagnetic how come they don't travel at the speed of light?
If they aren't electromagnetic what are they? | askscience | {
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"text": [
"Phonons are not electromagnetic waves, they’re mechanical oscillations (or at least the quantum version of them).",
"Are you sure there is no confusion between \"phonons\" and \"photons\" (ei... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://en.wikipedia.org/wiki/Phonon"
]
} | Are phonons a type of electromagnetic wave?
My chem prof keeps referring to sound waves/phonons as electromagnetic waves but I always thought they were purely kinetic/due to pressure differential and not electromagnetic. If they are electromagnetic how come they don't travel at the speed of light? If they aren't electr... | [
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1dgnxp | How does obesity affect the procedure of surgery? If the patient carries excessive body fat, how much does it hinder the surgeon? | This is mainly referring to surgeries done in places with typically more body fat, such as stomach or chest area. | askscience | {
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"Obesity affects surgery in many ways:\n\n* Persons who are obese tend to have a variety of comorbidities, including diabetes, heart disease, hypertension, obstructiv... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://chiropractorpeoria.org/files/2013/02/fat1.jpg"
]
} | How does obesity affect the procedure of surgery? If the patient carries excessive body fat, how much does it hinder the surgeon?
This is mainly referring to surgeries done in places with typically more body fat, such as stomach or chest area. | [
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1rnt7q | A question about explosives in a vacuum/space | As I understand, explosives in military use often achieve destruction by releasing a powerful shockwave through a medium - usually air or water.
In space, there's no medium for a shockwave to travel through. How would that affect the effectiveness of explosives? | askscience | {
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"At the most basic level, explosions happen because of rapid exothermic processes, which produce extremely large transient power densities. \n\nExtremely high power densities imply high temperatures, which means... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Radiative_heat_transfer#Radiative_power",
"http://en.wikipedia.org/wiki/Radiation_flux",
"http://homepages.abdn.ac.uk/h.tan/pages/teaching/explosion-engineering/Rankine.pdf"
]
} | A question about explosives in a vacuum/space
As I understand, explosives in military use often achieve destruction by releasing a powerful shockwave through a medium - usually air or water. In space, there's no medium for a shockwave to travel through. How would that affect the effectiveness of explosives? | [
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27vpvo | Ask Anything Wednesday - Engineering, Mathematics, Computer Science | Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on **Engineering, Mathematics, Computer Science**
Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for ... | askscience | {
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"text": [
"I'll be unconventional and ask & answer my own question, since it seems to be the most common in real life.\n\n**What is computer science research anyway?**\n\nCom... | {
"url": []
} | {
"url": [
"http://www.reddit.com/r/askscience/comments/1uxrxz/askscience_panel_of_scientists_x/",
"http://www.reddit.com/r/askscience/wiki/index#wiki_answering_askscience",
"http://www.reddit.com/r/askscience/search?q=flair%3A%27meta%27&restrict_sr=on&sort=new&t=all"
]
} | {
"url": [
"http://i.imgur.com/iCrNV5F.jpg"
]
} | Ask Anything Wednesday - Engineering, Mathematics, Computer Science
Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on **Engineering, Mathematics, Computer Science** Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for... | [
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24aea1 | What is the most "painless" way to prepare a lobster? | In my country (Belgium) there is currently a huge discussion going on about how to prepare a lobster as a meal. This was sparked by a chef who, on national television, cut a living lobster in half (lengthwise), ripped out it's legs and arms and put it on the barbeque. His argument was that the taste of the lobster is t... | askscience | {
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"I work next door to a lobster lab and they brought a guest speaker in last year whose specialty is crustacean pain. Though it is impossible to know for sure what the subjective experience of an animal is (or for that matter, from a philosop... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://ilarjournal.oxfordjournals.org/content/52/2/196.full.pdf",
"http://www.trevorcorson.com/old_blog/2005/12/how-to-kill-lobster-dedicated-to-david.html",
"https://www.avma.org/kb/policies/documents/euthanasia.pdf",
"http://ilarjournal.oxfordjournals.org/content/52/2/175.full.pdf",
... | What is the most "painless" way to prepare a lobster?
In my country (Belgium) there is currently a huge discussion going on about how to prepare a lobster as a meal. This was sparked by a chef who, on national television, cut a living lobster in half (lengthwise), ripped out it's legs and arms and put it on the barbequ... | [
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mp5vo | Got questions about archaeology, shipwrecks, or the archaeology of shipwrecks? Ask them here! | Ask away! This isn't really an AMA, as I'm not keen to talk about myself too much, but I'm happy to answer questions about the field! | askscience | {
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"text": [
"What is your opinion on people who hunt shipwrecks for profit? Do you compe... | {
"url": []
} | {
"url": []
} | {
"url": []
} | Got questions about archaeology, shipwrecks, or the archaeology of shipwrecks? Ask them here!
Ask away! This isn't really an AMA, as I'm not keen to talk about myself too much, but I'm happy to answer questions about the field! | [
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4u2qca | How large can a cubic-single-room-style structure be, like NASA's vehicle assembly building? | askscience | {
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"It could be built by placing many suspension bridges breadthwise next to each other. Longest of them currently have span up to 2 kilometers. They can be perhaps 500 meters high. So you could have 2 kilometer wide, 500 meter high room withou... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://structurae.net/structures/vehicle-assembly-building/photos?min=25",
"https://en.wikipedia.org/wiki/Tropical_Islands_Resort",
"https://en.wikipedia.org/wiki/List_of_largest_buildings_in_the_world"
]
} | How large can a cubic-single-room-style structure be, like NASA's vehicle assembly building?
| [
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1doeta | Could you "trap" light in a medium by perfectly refracting it in multiple media configured in a circle shape? | I don't know if it's even possible but if it was then what would we be able to see?
| askscience | {
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"text": [
"If you really did trap it, you would not see anything since seeing it means some got away.",
"What you're talking about is an [optical ring resonator](_URL_1_) which is a type ... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Optical_cavity",
"http://en.wikipedia.org/wiki/Optical_ring_resonators",
"http://www.radiolab.org/2013/feb/05/master-universe/",
"http://en.wikipedia.org/wiki/Total_internal_reflection#Applications"
]
} | Could you "trap" light in a medium by perfectly refracting it in multiple media configured in a circle shape?
I don't know if it's even possible but if it was then what would we be able to see? | [
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1bcwx6 | Is it true you can live without a stomach? | askscience | {
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"text": [
"I don't know whether the stomach has any functions besides digesting food, but people don't need a stomach (or intestines) to get nutrition. Nutrition can be suppli... | {
"url": []
} | {
"url": []
} | {
"url": [
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"http://en.wikipedia.org/wiki/Gastrectomy",
"http://roxbariatric.com/wp-content/uploads/2012/06/RYGB.png"
]
} | Is it true you can live without a stomach?
| [
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1r35c8 | If a material is bent and kept under stress is there a way to calculate when it will become accustomed to its new shape and no longer be under stress? | For example, if you compress a spring can you determine approximately when it will no longer expand when the weight is removed? | askscience | {
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"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Annealing_(metallurgy)"
]
} | If a material is bent and kept under stress is there a way to calculate when it will become accustomed to its new shape and no longer be under stress?
For example, if you compress a spring can you determine approximately when it will no longer expand when the weight is removed? | [
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6h8xcw | "There are no fields really, just particles"? | I was watching a lecture by Nima Arkani Hamed of Princeton's Institute for Advanced Study and I remember he said in the lecture "There are no fields really, just particles. Fields are just a mathematical construct that is useful in describing a particle." Was I wrong in thinking fields were real physical things that pe... | askscience | {
"a_id": [
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"text": [
"When quantum field theory was first being developed (note it's called quantum *field* theory, not quantum *particle* theory), there were the field theorists on one side (e.g. Schwinger & Tomonaga), and then there was Feynma... | {
"url": []
} | {
"url": []
} | {
"url": []
} | "There are no fields really, just particles"?
I was watching a lecture by Nima Arkani Hamed of Princeton's Institute for Advanced Study and I remember he said in the lecture "There are no fields really, just particles. Fields are just a mathematical construct that is useful in describing a particle." Was I wrong in thi... | [
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mv2od | Why can't we sleep at will? | Yes I have seen the scumbag brain posts, and tried reading up Wikipedia, but what I don't understand is why can't we sleep at will. On more than one occasion we all end up tossing and turning around in the bed when sleep is all we need, so why?
Edit 1: Thank you mechamesh for answering everyone's queries. | askscience | {
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"Sleep pressure is a combination of homeostatic and circadian pressure, what is called the [two-process model of sleep regulation](_URL_0_). \n\nTo simplify: the homeostatic pressur... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.ncbi.nlm.nih.gov/pubmed/6696142"
]
} | Why can't we sleep at will?
Yes I have seen the scumbag brain posts, and tried reading up Wikipedia, but what I don't understand is why can't we sleep at will. On more than one occasion we all end up tossing and turning around in the bed when sleep is all we need, so why? Edit 1: Thank you mechamesh for answering every... | [
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