How does the International Space Station regulate its temperature?

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• How does the International Space Station regulate its temperature?
• How do we know that the universe is ~13.7 billion years?
• Why do we lose consciousness?
• Is it possible for a rocky planet to be the size of, say, Jupiter, or is there a maximum size limit for rocky planets?
• AskScience AMA Series: I am Fabien Cousteau, an Aquanaut, Oceanographic Explorer, Environmental Advocate, Documentary Filmmaker, Founder of the Fabien Cousteau Ocean Learning Center, and Grandson of Jacques Cousteau. Ask me anything!
• Why does drinking methanol (CH3OH) cause blindness while drinking ethanol (CH3CH2OH) doesn't?
• How does a "direct collapse black hole" form without going through a star or supernova phase?
• How does one die of old age?
• Happy Pi Day everyone!
• Why Chemotherapy doesn't work when the cancer is in stage 4/metastasized?
• [Biology] Are there many non-social co-operative predators?
• Can you contract multiple strains of the flu at one time?
• The sun appears to move faster during sunrise or sunset. Why?
• What is the purpose of the salt in many anaesthetics?
• Does anyone know what this diseas is called?
• Is there a difference between divergent evolution and cladogenesis? Or is cladogenesis an example of divergent evolution?
• Pi is not a random number. Yet, when you look at a tabulation of 0-9 frequencies, they eventually even out to resemble a random data set. Why is this?
• Do our ears have any added protection from loud noises we ourselves vocalize, like screams, or high pitched singing? Example: would Opera Singers and horror film actresses have a higher rate of hearing loss at the pitches they sing/scream?
• What are the mechanics behind Armor piercing tank shells?
• Does violation of the 2nd Law of Thermodynamics allow for the possibility of time travel?
• Is all cellular damage ultimately just genetic damage?
• are there any tree species that have both deciduous and coniferous in the family?
• why is it easier to balance a spinning ball on your finger than one standing still? and in general, does this role apply to any shape?
• How do neurons do math, (like adding, subtracting)?

How does the International Space Station regulate its temperature? Posted: 14 Mar 2019 10:40 PM PDT If there were one or two people on the ISS, their bodies would generate a lot of heat. Given that the ISS is surrounded by a (near) vacuum, how does it get rid of this heat so that the temperature on the ISS is comfortable? submitted by /u/zx7 [link] [comments]

How do we know that the universe is ~13.7 billion years? Posted: 14 Mar 2019 09:48 PM PDT I know the universe is 13.7 billion years, but how do we know so? Is it just the fact that light from 13.7 billion light years is the farthest we can see or other reasons? submitted by /u/ItzNight53 [link] [comments]

Why do we lose consciousness? Posted: 14 Mar 2019 10:00 PM PDT Why do we lose consciousness? I was thinking about this recently. We can get knocked out from a number of different things — lack of oxygen to the brain, head trauma, fainting (for example, at the sight of blood). These are all very different causes, so what's the common link between them that creates the same symptom? I know that there probably tons of different ways to be unconscious, and that a blow to the head knocks us out differently from anoxia, but what is it in how the brain is wired that makes consciousness the first thing that always shuts down when something happens to the brain? I know that some children will hold their breath until they pass out and start breathing again. Would it be correct to say that in some cases, losing consciousness can act as a sort of circuit breaker in your brain? If so, what about other times? submitted by /u/Waldinian [link] [comments]

Is it possible for a rocky planet to be the size of, say, Jupiter, or is there a maximum size limit for rocky planets? Posted: 15 Mar 2019 04:33 AM PDT submitted by /u/marius1870 [link] [comments]

AskScience AMA Series: I am Fabien Cousteau, an Aquanaut, Oceanographic Explorer, Environmental Advocate, Documentary Filmmaker, Founder of the Fabien Cousteau Ocean Learning Center, and Grandson of Jacques Cousteau. Ask me anything! Posted: 15 Mar 2019 04:00 AM PDT As the first grandson of Jacques-Yves Cousteau, I spent my early years aboard my grandfather's famous ships, Calypso and Alcyone; learning how to scuba dive on my fourth birthday. I am known for my study of sharks and from 2000-2002, I was an Explorer-at-Large for National Geographic and collaborated on a TV special aimed at changing public conceptions about sharks called, "Attack of the Mystery Shark". Then in 2003-2006, I produced the documentary, "Mind of a Demon", that aired on CBS. With the help of a large crew, I created a 14-foot, 1,200-pound, lifelike shark submarine called "Troy" that allowed me to immerse myself inside the shark world, providing viewers with a rare view of the mysterious and often misunderstood creatures. This also led to the inspiration behind my new book, GREAT WHITE SHARK ADVENTURE. For the next four years (2006-2010), I was part of a multi-hour series for PBS called, "Ocean Adventures" with my father, Jean-Michel Cousteau, and sister, Celine. This was inspired by my grandfather's famous 1978 PBS series, "The Cousteau Odyssey". In the following years, and as a member of multiple cause-driven and charitable boards I have been working with local communities and children worldwide to help restore local water ecosystems. In June 2014, my team of aquanauts embarked on Mission 31, the longest science expedition to take place at Aquarius, the world's only underwater marine laboratory located in Florida. Mission 31 broke new ground in ocean exploration and honored the 50th anniversary of his grandfather's original underwater living experiment (Conshelf Two) by going deeper, longer and further, while broadcasting each moment live on multiple channels exposing the world to the adventure, drama and mystique of what lies beneath. Early in 2016 I founded the Fabien Cousteau Ocean Learning ("OLC") to fulfill my dream of creating a vehicle to make a positive change in the world. Last week, the first book in my new graphic novel series, GREAT WHITE SHARK ADVENTURE, came out from the Margaret K. McElderry Books, an imprint of Simon and Schuster Children's Publishing. You can learn more about me at my website, on Twitter, or on Facebook. I will be on about 2pm (ET, 18 UT), ask me anything! submitted by /u/AskScienceModerator [link] [comments]

Why does drinking methanol (CH3OH) cause blindness while drinking ethanol (CH3CH2OH) doesn't? Posted: 15 Mar 2019 03:31 AM PDT Even though the difference between the two is only one carbon. submitted by /u/majoody35 [link] [comments]

How does a "direct collapse black hole" form without going through a star or supernova phase? Posted: 14 Mar 2019 09:26 PM PDT submitted by /u/Thrownawaybyall [link] [comments]

How does one die of old age? Posted: 15 Mar 2019 04:36 AM PDT submitted by /u/Roby_Z [link] [comments]

Happy Pi Day everyone! Posted: 14 Mar 2019 09:46 AM PDT Today is 3/14/19, a bit of a rounded-up Pi Day! Grab a slice of your favorite Pi Day dessert and come celebrate with us. Our experts are here to answer your questions all about pi. Check out some past pi day threads. Check out the comments below for more and to ask follow-up questions! From all of us at /r/AskScience, have a very happy Pi Day! And don't forget to wish a happy birthday to Albert Einstein! submitted by /u/AskScienceModerator [link] [comments]

Why Chemotherapy doesn't work when the cancer is in stage 4/metastasized? Posted: 15 Mar 2019 03:52 AM PDT submitted by /u/GeSRXDEQLk [link] [comments]

[Biology] Are there many non-social co-operative predators? Posted: 15 Mar 2019 05:03 AM PDT I was watching a documentary on komodo dragons and while they seem to be mostly solitary their hunting strategy seems to be fundamentally co-operative. When an animal dies from a komodo bite it attracts other komodo dragons the meal is shared. Is this common in nature? submitted by /u/borkula [link] [comments]

Can you contract multiple strains of the flu at one time? Posted: 15 Mar 2019 04:44 AM PDT submitted by /u/PringIesCan [link] [comments]

The sun appears to move faster during sunrise or sunset. Why? Posted: 14 Mar 2019 09:43 PM PDT submitted by /u/worldrecordusername [link] [comments]

What is the purpose of the salt in many anaesthetics? Posted: 14 Mar 2019 10:39 PM PDT I am not certain I used the right words and phrasing in the title, but I wondered what the purpose of the salt in many anaesthetics is e.g. morphine sulfate and ketamine hydrochloride, why not just morphine or ketamine? Am I missing something very basic here? I tried googling it but I couldn't really find an answer. Thanks in advance for any help. submitted by /u/MrCookieFrog [link] [comments]

Does anyone know what this diseas is called? Posted: 15 Mar 2019 06:07 AM PDT I remember it causes people to involuntarily do things to hurt themselves and others they don't want to and urine often crystallizes with it, it's a genetic disorder with the brain. submitted by /u/WaluigisBulge [link] [comments]

Is there a difference between divergent evolution and cladogenesis? Or is cladogenesis an example of divergent evolution? Posted: 14 Mar 2019 11:13 PM PDT submitted by /u/ReallyStickyFingers [link] [comments]

Pi is not a random number. Yet, when you look at a tabulation of 0-9 frequencies, they eventually even out to resemble a random data set. Why is this? Posted: 14 Mar 2019 06:26 PM PDT Do lots of other constants do this? How many have enough digits, let alone presumably infinite, to achieve that kind of even 0-9 distribution? Thanks. submitted by /u/prometheanbane [link] [comments]

Do our ears have any added protection from loud noises we ourselves vocalize, like screams, or high pitched singing? Example: would Opera Singers and horror film actresses have a higher rate of hearing loss at the pitches they sing/scream? Posted: 14 Mar 2019 08:40 PM PDT submitted by /u/Waitwhatismybodydoin [link] [comments]

What are the mechanics behind Armor piercing tank shells? Posted: 14 Mar 2019 09:53 PM PDT As well as APHE (armor piercing high explosive) and API (armor piercing incendiary) how do they function and how do they function effectively? submitted by /u/Dank0Tank [link] [comments]

Does violation of the 2nd Law of Thermodynamics allow for the possibility of time travel? Posted: 15 Mar 2019 03:31 AM PDT My understanding is that this law dictates that arrow of time can only flow one way (into the future - toward increasing entropy) limiting any travel back to a previous event. If a study could show that this law could be violated would this allow the possibility of time travel (obviously excluding the practical problems it would entail)? submitted by /u/GeraldUltair [link] [comments]

Is all cellular damage ultimately just genetic damage? Posted: 14 Mar 2019 10:22 PM PDT For example, a person gets hit in the head and gets a concussion which results in damage to their brain cells. Does this "damage" to their brain cells basically boil down to the fact that the genes in the cell can't do their job, replicate, etc. anymore? If so, does this mean that all cellular damage is ultimate just genetic damage? Or, am I missing something? Cheers. submitted by /u/JettisonedJetsam [link] [comments]

are there any tree species that have both deciduous and coniferous in the family? Posted: 14 Mar 2019 03:49 PM PDT been trying to find a tree species that is both coniferous and deciduous? like how a white oak has smooth broad leafs that they lose in the fall and a pine tree is needle like that remain on the tree all year are there any tree species's that have both types of tree types been trying to find a tree species that can have both types submitted by /u/hovegeta [link] [comments]

why is it easier to balance a spinning ball on your finger than one standing still? and in general, does this role apply to any shape? Posted: 15 Mar 2019 01:06 AM PDT for example - would it be easier to balance a spinning car on a pole or balancing it while standing still? submitted by /u/sagsag2150 [link] [comments]

How do neurons do math, (like adding, subtracting)? Posted: 14 Mar 2019 02:08 PM PDT From my understanding, neurons are just wires that carry a signal, and have no means of computation like the logic gates in computers. How do they do it? submitted by /u/Thedupdup [link] [comments]

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A person died in the apartment below me, and the body stayed there for 3 weeks. Why is the smell not leaving the walls/furniture, and why is that smell still occuring without the body? What are those chemicals? Are those chemical "sticking" to materials the same way it does for urine?

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• A person died in the apartment below me, and the body stayed there for 3 weeks. Why is the smell not leaving the walls/furniture, and why is that smell still occuring without the body? What are those chemicals? Are those chemical "sticking" to materials the same way it does for urine?
• If gold is a worse electrical conductor than silver and copper, why are gold plated contacts considered "better" by the market?
• I read that scientist reversed time in a quantum computer, what does that mean?
• How big do people from "pygmy" groups get when raised with a post-scarcity diet?
• What is soil liquefaction and how does it work ?
• How much power does it take to drive an LCD display?
• What molecular structure binds ATP as a cofactor to an enzyme?
• How are noble gases collected?
• When a star is being formed, how big is it physically right before nuclear fusion occurs?
• How can the electric field of a uniform volumetric charge density be in a particular direction?
• Is there any shape that's impossible to calculate the area of?
• How does the blood-brain barrier in humans not get clogged up with molecules bigger than what can fit through?
• Do other mammals get aroused by watching other members of it's species have sex, similar to humans and pornography?
• Is there any way to create light without heat?
• How do high temperatures kill pathogens on a physical level?
• Why does adsorption in a lattice favour the ions of its constituents, like AgI adsorbing I- or Ag+ ions preferentially?
• Ask Anything Wednesday - Engineering, Mathematics, Computer Science
• [Physics] Why is it important we know the structure of molecules?
• With the innumerable amount of objects in the vast expanse of the observable universe, and our current/near-future technology that allows us to see and study such long distances from Earth, how do astronomers decide what to study first?
• (Myrmecology/Entymology) Is ant behavior contextual? Do ants react to life-threatening situations differently based on hive strength/health?
• How does an anti-inflammatory medicine target where to work in the body?
• Where does rabies lyssavirus actually originate from?

A person died in the apartment below me, and the body stayed there for 3 weeks. Why is the smell not leaving the walls/furniture, and why is that smell still occuring without the body? What are those chemicals? Are those chemical "sticking" to materials the same way it does for urine? Posted: 14 Mar 2019 04:26 AM PDT submitted by /u/jokoon [link] [comments]

If gold is a worse electrical conductor than silver and copper, why are gold plated contacts considered "better" by the market? Posted: 13 Mar 2019 10:26 AM PDT I've always wondered if this is just a marketing thing, but all across the electronic supply spectrum I see "gold plated" listed as the best conductors for various contacts and connectors. However, silver is considered the most conductive element (6.2×107 S/m), followed by copper (5.9×107 S/m), with gold (4.5×107 S/m) being third. I get that any of those are better conductors than the most common (tin and steel) but I would think silver, being less expensive, more abundant, and a better conductor, would be preferred over gold. What am I missing here? Source for conductivity values Edit: Asked and answered, just like that. I have no idea why oxidation didn't even enter my mind but regardless, thanks Reddit! Edit 2: My first ever gold, on a post about gold. M E T A. Thanks anonymous Redditor! Edit 3: First gold, now silver...is there a Reddit Copper to complete the trifecta? Thanks! Final edit I promise: Thank you to all of you who are making me feel better about missing the obvious answer. Also, thanks to the anonymous Platinum donor! Hey, speaking of which, platinum is a decent conductor too... submitted by /u/catonmyfeet [link] [comments]

I read that scientist reversed time in a quantum computer, what does that mean? Posted: 14 Mar 2019 12:46 AM PDT https://futurism.com/russian-scientist-quantum-computer-time submitted by /u/italianboi98 [link] [comments]

How big do people from "pygmy" groups get when raised with a post-scarcity diet? Posted: 14 Mar 2019 05:18 AM PDT It's known that human stature is a product of both genetics and diet/upbringing. There are various peoples throughout the Earth who are considered to be "pygmies" where the men barely reach five feet, in Africa and Southeast Asia. Most of these people I imagine are raised with a traditional diet, and I was wondering if it's known how big they get if raised with a Western diet and lifestyle, the kind that leads to second-generation immigrants in North America being a head taller than their parents. submitted by /u/iorgfeflkd [link] [comments]

What is soil liquefaction and how does it work ? Posted: 14 Mar 2019 05:13 AM PDT I saw this post on r/gifs where the ground was acting like water but was actually dirt. I was wondering how this kind of effect happen and what are the consequences. submitted by /u/Gw3nn2B [link] [comments]

How much power does it take to drive an LCD display? Posted: 14 Mar 2019 04:56 AM PDT Not counting the backlight, signal processing, etc. how much power is needed to change the state of a single LCD pixel? What about to keep it in the same state? How does this scale to larger displays? submitted by /u/0x0BAD_ash [link] [comments]

What molecular structure binds ATP as a cofactor to an enzyme? Posted: 14 Mar 2019 04:54 AM PDT Like my title reads I am wondering what makes enzymes bind ATP to use during phosphorylation as a cofactor? There are 2 hydroxal groups, are they drawn by hydrogen bonds to the enzyme? What draws the adenosin to the enzyme? What makes the AMP post phosphorylisation leave the enzyme? When I asked my teacher she said that specific pocket contained phrolin but she wasn't sure. If you have any recommendations on where to read more about ATP please let me know. ​ Best regards SomeCynicalNihilist submitted by /u/SomeCynicalNihilist [link] [comments]

How are noble gases collected? Posted: 14 Mar 2019 01:33 AM PDT I understand how some elements are collected, like hydrogen, which is collected from water. Or some of the heavy ones that are just synthesized by heavy bombardment. But how do you accumulate lots of helium, neon, or some other noble gas? submitted by /u/PiranhaShroom [link] [comments]

When a star is being formed, how big is it physically right before nuclear fusion occurs? Posted: 13 Mar 2019 06:28 PM PDT submitted by /u/PaleBlueDot9 [link] [comments]

How can the electric field of a uniform volumetric charge density be in a particular direction? Posted: 13 Mar 2019 11:36 PM PDT There's a real interesting problem in Griffith's Introduction to Electrodynamics that's tripping up me. ​ Assume there's a field E = axî, where a is constant. curlE = 0, and divE is just equal to a, so there's a constant charge density ρ(x, y, z) = ε₀a. So Griffith asks, "How can the E-field from a uniform charge density point in a particular direction?" Well, obviously this charge distribution isn't unique to just that field; any field of the same form along the y- or z-axes gives the same distribution, which I feel should mean I'm violating the Helmhotz theorem somewhere, but I'm not sure. ​ The infinite volume integral of a constant charge density in Coulomb's law just diverges, right? Normally I'd think we need a symmetry argument to determine this kind of field. Since a constant ρ is rotationally and translationally symmetric in all 6 d.o.f., that tells me E 's gotta be uniformly 0. But the divergence of an identically zero E-field is just zero too, which now says there's no charge at all. So far I'm not good enough with calculus to recognize what's going on. Is there something wrong with the differential form of Gauss's law here (divE = ρ/ε₀)? submitted by /u/Rightwraith [link] [comments]

Is there any shape that's impossible to calculate the area of? Posted: 13 Mar 2019 11:48 PM PDT When calculating the area of a weird shape, what you normally do is break it up into easier shapes to work with, like triangles, squares, etc. I'm not aware of any other way you can calculate the area of more irregular shapes. ​ So is it possible to create an irregular shape that is impossible to break up into other shapes, making it impossible to calculate the area of that shape? submitted by /u/Sol33t303 [link] [comments]

How does the blood-brain barrier in humans not get clogged up with molecules bigger than what can fit through? Posted: 13 Mar 2019 04:55 PM PDT submitted by /u/The_Techsan [link] [comments]

Do other mammals get aroused by watching other members of it's species have sex, similar to humans and pornography? Posted: 13 Mar 2019 07:47 AM PDT submitted by /u/Red_V_Blue [link] [comments]

Is there any way to create light without heat? Posted: 14 Mar 2019 12:43 AM PDT And if so is there any way I could rub my hands together and create light without burning my hands? submitted by /u/lix-lyte [link] [comments]

How do high temperatures kill pathogens on a physical level? Posted: 13 Mar 2019 12:49 PM PDT What happens to the germ on a small scale, do the hot air or water molecules rip the germ apart? Do they shoot through the walls of the germ? submitted by /u/Danderson98 [link] [comments]

Why does adsorption in a lattice favour the ions of its constituents, like AgI adsorbing I- or Ag+ ions preferentially? Posted: 14 Mar 2019 02:17 AM PDT submitted by /u/Dotard007 [link] [comments]

Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 13 Mar 2019 08:11 AM PDT 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 AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! submitted by /u/AutoModerator [link] [comments]

[Physics] Why is it important we know the structure of molecules? Posted: 13 Mar 2019 11:40 PM PDT I was reading about the synchrotron science facility 'Diamond Light Source' and read that there, they use diffraction patterns to figure out the structures of things such as proteins. What is the significance of this kind of work? Bonus if someone can go into detail about the process. Thanks in advance. submitted by /u/EndOnAnyRoll [link] [comments]

With the innumerable amount of objects in the vast expanse of the observable universe, and our current/near-future technology that allows us to see and study such long distances from Earth, how do astronomers decide what to study first? Posted: 13 Mar 2019 12:14 PM PDT With so many potential objects/areas to study, and a limited number of observatories/powerful telescopes, how do scientists decide where to start? What gets priority? Is there a systematic approach to scanning, studying, and mapping the universe? Is someone in charge of doing a "general sweep" of the cosmos and identifying potential important areas of study? Sorry if something similar has already been asked. Thanks! submitted by /u/SometimesHelpful123 [link] [comments]

(Myrmecology/Entymology) Is ant behavior contextual? Do ants react to life-threatening situations differently based on hive strength/health? Posted: 13 Mar 2019 12:08 PM PDT Do ants change their behavior in-the-moment based on broad contextual issues like hive health? (To clarify: question is not whether they collect different resources or perform different duties based on hive needs. Although if you have information on that I'd be very interested in the manner of transmission. Really anything about ant behavior.) We have a pretty serious ant situation in my house, and we've tried a number of... solutions. We've deployed the chalk they don't like walking over, spray-on pesticides and those long-delay poison traps. I think I've noticed a contextual attitude change in the ants, but I'm wondering if I'm just making it up. It seems like the ants I discover after a particularly successful decimation of a hive are more likely to scatter at "threatening" signs like changes in light and vibrations, and run for longer. By contrast, when the hive is thriving and numerous, there are more "exploratory" ants who are more bold when similar prompts happen. Am I making up the difference? Or do ants have a sense of what the status of the hive is and respond in kind? I believe they change their tasks based on need (e.g. food, water, protection), but I'm specifically interested if whether or not the impulse for self-preservation is changed based on hive context? Having been in the Air Force, I think of it kind of like Force Protection Condition levels -- security protocol set base-wide to indicate the likelihood of an attack. Obviously ants don't have a daily briefing, but do they have a "hive health awareness" that basically tells them, "Alright gents, we lost half the hive yesterday to that unknown illness, so be careful out there! You see something, you run away!" versus "Gents, we're doing great -- more food than we know what to do with, and lots of babies -- the hive is at full strength and if you see something danger, be stupid!" submitted by /u/heinyken [link] [comments]

How does an anti-inflammatory medicine target where to work in the body? Posted: 13 Mar 2019 12:47 PM PDT If we get inflammation in any body part, for whatever reason, we take an anti-inflammatory medicine. A small example might be tooth extraction or inflammation on toes due to cold. How does the medicine know which body part to target and reduce the inflammation? Doesn't it harm the overall body by trying to reduce "inflammation" globally? submitted by /u/saurabh69 [link] [comments]

Where does rabies lyssavirus actually originate from? Posted: 13 Mar 2019 05:15 PM PDT I am wondering where the rabies lyssavirus originates from. Obviously the mode of transmission is via being bitten by an animal already carrying the disease, but that animal itself got bitten by a rabid animal and so on, so how can we trace it back to where it actually comes from? submitted by /u/whatisuniqueusername [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

AskScience AMA Series: I am Dr. Nina Kraus and will talk about how music and concussion impact brain health. Ask Me Anything!

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• AskScience AMA Series: I am Dr. Nina Kraus and will talk about how music and concussion impact brain health. Ask Me Anything!
• Can you use a regular compass on Mars?
• AskScience AMA Series: I am Professor Kartik Hosanagar and I'm here to discuss how algorithms and AI control us and how we can control them. Ask Me Anything!
• Is it possible to give a planet without an active core a magnetic field?
• How are various sea creatures such as dolphins and whales, able to "hold their breath" for so long under water?
• How do aeroplane black boxes withstand crashes which otherwise destroy the plane and everything inside of it?
• Are drops of water consistent in size? How big is that, and why? And what about other substances like oil, or molten metal?
• “Wigner’s Friend” thought experiment — How does this suggest objective facts don't exist?
• Do insects need to sleep too?
• Why do some quantum interactions cause entanglement, and some interactions cause wave function collapse?
• If carbon dioxide is only 0.0391 percent of the atmosphere, how does it have such a big impact on climate change?
• Can the new fission reactor designs completely guard against nuclear meltdowns?
• How to turn a sphere inside out?
• Are autoimmune diseases and allergies related? How do they differ?
• Who invented or discovered the concept of mass as distinct from weight?
• In massive stars, hydrogen fuses into helium, then carbon, neon, and oxygen before eventually fusing into iron. During the oxygen fusion phase, why doesn't all the oxygen simply ignite/catch fire?
• The male hormone testosterone causes hair loss at males, but increases the beard growth. How does that work? Isnt hair=hair, no matter if in the face or at the head?
• Are there any major cases of speciation/evolution in invasive species that we know of?
• [Physics] Spin - If I give Sally an electron in the morning, can I tell if Sally rotated an even number of times at the end of the day?
• How are modern processor architectures tested and refined?
• How do counterweights at the tops of tall buildings such as a pendulum or pool of water counteract the buildings swaying?
• Why do people say it’s the current that kills you and not the voltage?

AskScience AMA Series: I am Dr. Nina Kraus and will talk about how music and concussion impact brain health. Ask Me Anything! Posted: 08 Mar 2019 04:00 AM PST How do our experiences, such as learning how to play music and playing sports, affect our brain? Although we are surrounded by sound all of the time, we rarely give much thought to this invisible yet powerful companion. The auditory system is a uniquely complex sensory system and the ability to make sense of sound relies on exquisite precision by the brain. Given the complexity and precision of the auditory system, accurate sound processing is particularly vulnerable to head injury. On the other hand, its precision can be honed by activities that exercise the auditory brain such as playing a musical instrument. We have discovered a way to objectively capture the imprint that sounds leave on our brains. This biological approach empowers us to learn more and more about this invisible ally and enemy of brain health. Dr. Kraus will examine the promise of measuring soundprints in the brain to assess and manage sports-related concussions. She will discuss how music training is beneficial for the brain, strengthens our communication skills, and can inform health care, education, and social policy. Dr. Kraus will be here at 2:00 CT (3 ET, 19 UT). Ask her anything! Links: www.brainvolts.northwestern.edu http://www.brainvolts.northwestern.edu/projects/concussion/index.php http://www.brainvolts.northwestern.edu/projects/music/index.php http://www.brainvolts.northwestern.edu/projects/neuroeducation/index.php http://www.brainvolts.northwestern.edu/projects/neuroeducation/advocacy.php articles: Kraus N, White-Schwoch T (2017) Neurobiology of everyday communication: what have we learned from music? *The Neuroscientist(. 23(3): 287-298. Kraus N, Nicol T (2017) The power of sound for brain health. Nature Human Behaviour. 1: 700-702 Kraus N, Thompson EC, Krizman J, Cook K, White-Schwoch T, LaBella CR (2016) Auditory biological marker of concussion in children. Nature: Scientific Reports. 6: 39009. submitted by /u/AskScienceModerator [link] [comments]

Can you use a regular compass on Mars? Posted: 12 Mar 2019 02:15 PM PDT submitted by /u/Trajan_pt [link] [comments]

AskScience AMA Series: I am Professor Kartik Hosanagar and I'm here to discuss how algorithms and AI control us and how we can control them. Ask Me Anything! Posted: 13 Mar 2019 04:00 AM PDT Through the technology embedded in web-enabled devices, algorithms and the programs that power them make a staggering number of everyday decisions for us, from what products we buy, to where we decide to eat, to how we consume our news, to whom we date, and how we find a job. We've even delegated life-and-death decisions to algorithms-decisions once made by doctors, pilots, and judges. In my new recently published book, ``A Human's Guide to Machine Intelligence: How Algorithms Are Shaping Our Lives and How We Can Stay in Control'', I have surveyed this brave new world and revealed the potentially dangerous biases they can give rise to as they increasingly run our lives. I make the compelling case that we need to arm ourselves with a better, deeper, more nuanced understanding of the phenomenon of artificial intelligence. I have examined episodes like Microsoft's chatbot Tay, (which was designed to converse on social media like a teenage girl, but instead turned sexist and racist), the fatal accidents of self-driving cars, and even our own common, and often frustrating, experiences on services like Netflix and Amazon. I will be available fro 3-5PM ET (19-21 UT). Ask me anything! submitted by /u/AskScienceModerator [link] [comments]

Is it possible to give a planet without an active core a magnetic field? Posted: 13 Mar 2019 04:48 AM PDT I'm mostly thinking of Mars, inspired by a top post in this sub about compass use on the planet. I know the reason Mars is barren is it's lack of a protective magnetosphere, but could the planets core be jump started or an artificial field be developed? Obviously both require vast amounts energy but let's pretend such energy is available for said purposes. submitted by /u/DarthReeder [link] [comments]

How are various sea creatures such as dolphins and whales, able to "hold their breath" for so long under water? Posted: 13 Mar 2019 01:25 AM PDT What is different about their physiology that allows them to stay under water for so long? submitted by /u/Sol33t303 [link] [comments]

How do aeroplane black boxes withstand crashes which otherwise destroy the plane and everything inside of it? Posted: 12 Mar 2019 02:49 PM PDT I get that they are built to a higher specification, but not how that is achieved. submitted by /u/mattjstyles [link] [comments]

Are drops of water consistent in size? How big is that, and why? And what about other substances like oil, or molten metal? Posted: 12 Mar 2019 04:04 PM PDT submitted by /u/phoenixsuperman [link] [comments]

“Wigner’s Friend” thought experiment — How does this suggest objective facts don't exist? Posted: 13 Mar 2019 06:06 AM PDT I understand that according to the laws of quantum mechanics, the photon exists in a superposition until it's measured. If Wigner's Friend measures it and Wigner doesn't, doesn't Wigner just have a lack of information? Wigner hasn't taken the next step to get the answer. Can his friend measure the polarization and get a different result each time? I'm having a difficult time reconciling how this is different than if Wigner looked into the distance and couldn't give a measurement for where the horizon disappeared, but his Friend could because he DID measure it. His Friend has more information — it doesn't mean objective facts don't exist. I have to be missing something super simple here or the experiment wouldn't have credence. I'm not trying to say it's wrong I just don't understand. submitted by /u/Ikioi [link] [comments]

Do insects need to sleep too? Posted: 12 Mar 2019 04:57 PM PDT As in, does the mosquito that pesters me when I sleep need to sleep as well or do small lifespans of some insects means they die before they need to sleep (if they do sleep). submitted by /u/LeNerdNextDoor [link] [comments]

Why do some quantum interactions cause entanglement, and some interactions cause wave function collapse? Posted: 12 Mar 2019 11:22 PM PDT Two particles interacting can enter a superposition / become entangled. But also, some interactions are an observation / measurement that cause wave function collapse. How does this work? What's special about 'observations', why don't they just become entangled with the system rather than causing wave function collapse? submitted by /u/imMAW [link] [comments]

If carbon dioxide is only 0.0391 percent of the atmosphere, how does it have such a big impact on climate change? Posted: 12 Mar 2019 02:22 PM PDT Hi everyone, I have a teacher who believes that humans are not to blame for climate change and that climate change is not a real thing due to the fact that carbon dioxide only makes up a very small part of the atmosphere. I have tried to research this, but found conflicting results. Can you please help me to find an answer? submitted by /u/Wavymiik [link] [comments]

Can the new fission reactor designs completely guard against nuclear meltdowns? Posted: 13 Mar 2019 04:58 AM PDT Hi all, ​ I hope some of you can clarify a discussion I had with a colleague. We talked about the safety of Nuclear Fission Reactors. And my colleagues contention is that the new fission reactors are completely safe. That they can't melt down. Which I highly doubt. His argument is that the new reactors are designed to remove fuel materials from one another, and thus stopping the reaction (as opposed to fuel control rods), and that by removing the fuel material from eachother would cause the fuel to stop generating heat, and thus would never get hot enough to melt the material. But my counter is that the residual heat from the fuel elements would be enough to melt the fuel material in case of a completely loss of coolant. Now I get that the newer tier IV reactor designs incorporate security measures, such as a closed loop system without the needing of pumps etc. - Which does make the design much more secure. But can someone clarify whether a core meltdown can be avoided by separating the fissionable material even if there is a loss of coolant? submitted by /u/Xenoxsis [link] [comments]

How to turn a sphere inside out? Posted: 12 Mar 2019 11:49 AM PDT I recently saw an animation in which they said mathematicians have figured out how to turn a sphere inside out. The material was stated to be an abstract elastic material that can stretch, bend and pass through itself. The rules of the game were: - You cannot rip or puncture the material without destroying it. - You cannot crease or sharply bend the material without destroying it. I wondered if someone could either explain the maths behind it or how the mathematicians came to the conclusion it was possible. Here's the link to a similar video from Facebook: https://www.facebook.com/CymaticUniverse/videos/330251244444076/ submitted by /u/AtomicGeckoIII [link] [comments]

Are autoimmune diseases and allergies related? How do they differ? Posted: 12 Mar 2019 04:07 PM PDT submitted by /u/jmg_joe10 [link] [comments]

Who invented or discovered the concept of mass as distinct from weight? Posted: 12 Mar 2019 12:56 PM PDT If all early science took place on earth where gravity is constant, mass and weight are seemingly interchangeable. So, someone at a certain point had to make the distinction between the two. It seems likely that this couldn't happen until after Newton. Did he discover this distinction? It doesn't seem completely necessary for him to discover this. F=ma looks a lot like F=wa when gravity is constant. This is a fundamental unit of science and the history of the distinction doesn't seem well documented based on some searching. submitted by /u/lizzardman [link] [comments]

In massive stars, hydrogen fuses into helium, then carbon, neon, and oxygen before eventually fusing into iron. During the oxygen fusion phase, why doesn't all the oxygen simply ignite/catch fire? Posted: 12 Mar 2019 01:59 PM PDT submitted by /u/thermal7 [link] [comments]

The male hormone testosterone causes hair loss at males, but increases the beard growth. How does that work? Isnt hair=hair, no matter if in the face or at the head? Posted: 12 Mar 2019 11:51 AM PDT submitted by /u/Melbourne_Australia [link] [comments]

Are there any major cases of speciation/evolution in invasive species that we know of? Posted: 12 Mar 2019 04:20 PM PDT Are any invasive species known to have diverged substantially from original populations after years of isolation? Obviously evolution is ongoing and continuous but what about obvious physical differences that are already the result of a species being relocated by humans? submitted by /u/cncwmg [link] [comments]

[Physics] Spin - If I give Sally an electron in the morning, can I tell if Sally rotated an even number of times at the end of the day? Posted: 12 Mar 2019 01:39 PM PDT This is what my Naive pop-sci knowledge of spin tells me. We would some measuring device that first measures some quantity ( call it electron-rotation) of the electron and then measures it again at the end of the day. We can only tell the difference between the number of rotations mod 720° though. Now, a different question. If before measuring Sally, I grabbed my device and I did a 360° rotation. And then I measured Sally. Would it add 360° to the measured electron rotation? So if I could paint electrons with rotation between 0°,360° as green, and 360°,720° as blue, then if I did a 360° rotation they would all swap colors right? submitted by /u/TransientObsever [link] [comments]

How are modern processor architectures tested and refined? Posted: 12 Mar 2019 10:06 AM PDT submitted by /u/idk1415 [link] [comments]

How do counterweights at the tops of tall buildings such as a pendulum or pool of water counteract the buildings swaying? Posted: 12 Mar 2019 10:02 AM PDT submitted by /u/coffee-bean- [link] [comments]

Why do people say it’s the current that kills you and not the voltage? Posted: 12 Mar 2019 10:24 AM PDT submitted by /u/ChampionOfChaos [link] [comments]

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