Do primates have mental disorders like humans?

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• Do primates have mental disorders like humans?
• For whales and dolphins can water "Go down the wrong pipe" and make them choke like with humans?
• Why does outer space look black?
• Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
• How do sponges, towels, and cloths hold liquids?
• What does shower mold eat? Where is it getting its energy from?
• When a solid is dissolved in a liquid, is it still a solid, what about individual atoms or molecules in a vacuum?
• What specifically are electrodes measuring on an ECG?
• does the pressure of the oceans have a effect on the ocean? would the ocean floor look different if there wasn't an ocean over it?
• Is it possible to see a simultaneous solar transit of Phobos and Deimos from anywhere on Mars?
• Do Quarks have Volume?
• If a submarine loses it ability to function underwater, is it possible to “tow” it back to the surface?
• Does the weight of food have any bearing on its caloric density?
• How does the Event Horizon Telescope work?
• What evidence do we have of plate tectonics besides the shapes of the continents fitting together?
• How do governments tell the difference between nuclear launches and peaceful space missions?
• How do astronomers hypothesize/determine what elements are present on planets based on telescopic images?
• How can we differenciate between cause and effect when we talk about psycological biases? Like some colours causing us to be more hungry.
• Has there been any introduction of arctic species to the antarctic or vice versa by research ships that visit both?
• What do the electrodes on an EKG measure?
• What happens to unborn that stay in the womb longer than usual?
• If visible light and radio waves are both forms of electromagnetic radiation, do radio waves also exhibit wave/particle duality? If not, why?

Do primates have mental disorders like humans? Posted: 02 Apr 2019 03:49 PM PDT I was at the zoo today and watched a gorilla pick at a scab on its finger, compulsively, until it started bleeding. Is this OCD or is it just a nervous thing that primates do at the zoo? Do gorillas share any of the same mental disorders that humans have? submitted by /u/srewoByesaC [link] [comments]

For whales and dolphins can water "Go down the wrong pipe" and make them choke like with humans? Posted: 03 Apr 2019 07:19 AM PDT submitted by /u/borosuperfan [link] [comments]

Why does outer space look black? Posted: 02 Apr 2019 05:45 PM PDT submitted by /u/itsfrizzy [link] [comments]

Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 03 Apr 2019 08:13 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary 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]

How do sponges, towels, and cloths hold liquids? Posted: 03 Apr 2019 12:56 AM PDT As the title says, how do some materials hold fluids very well while others, like table tops, just have fluids slide off? What makes a liquid "hold" in a material? submitted by /u/moon_forge [link] [comments]

What does shower mold eat? Where is it getting its energy from? Posted: 02 Apr 2019 09:42 AM PDT You know the mold in your shower that you're always trying to get rid of? What it is eating? I don't understand what it's growing off of. Every living thing needs an energy source aka to eat, right? So what is the mold eating? ​ It can't be photosynthesizing because my bathroom doesn't have windows. It can't be eating my dead skin cells/run off dirt because it's up near the ceiling too. It can't be eating regular food because I don't eat or keep food in my shower. ​ Is it eating my soap or shampoo or something? Or maybe it's like a predator that eats the bacteria on the walls. I really have no idea so I turn to reddit. Thank you! submitted by /u/brightlittlesheep [link] [comments]

When a solid is dissolved in a liquid, is it still a solid, what about individual atoms or molecules in a vacuum? Posted: 02 Apr 2019 11:58 AM PDT I am trying to gain a better understanding about states of matter, the last paragraph is the most important one to be answered. ​ It is my understanding that when a solid is dissolved into a liquid, at least some of it is individual molecules or atoms are are not attached to other molecules and atoms of the same type, instead they are completely separate, not part of any solid structure. In that situation, are those molecules or atoms a solid, a liquid or something else? ​ Additionally, if I have an individual atom or molecule in a vacuum, which at that temperature and pressure would normally be solid, is it still considered a solid? What if that single atom or molecule would be a liquid at that temperature and pressure, is it still considered a liquid? ​ Is there something fundamental about the state of an atom or molecule that, independently of other atoms or molecules of the same type, determines if it is in a solid, liquid or gas state (plasma I understand)? Are there observations, tests or measurements (other than temperature) that could be applied to an individual atom or molecule in a vacuum that could be used to test its state (perhaps how it reacts chemically with other substances, perhaps how it interacts mechanically with other substances, how it moves, perhaps how it responds to radiation)? ​ ​ submitted by /u/EdwardNardella [link] [comments]

What specifically are electrodes measuring on an ECG? Posted: 02 Apr 2019 12:46 PM PDT I'm trying to understand how ECG's work. I understand the different views but not specifically what the electrodes are measuring. For example, lead I measures the flow of some charge (positive to negative electrons?) from the left arm lead to the right arm lead. What I don't understand is what exactly the electrodes are measuring and how the myocytes effect something that can be measured on the surface of the skin so far away from the heart. submitted by /u/uq42 [link] [comments]

does the pressure of the oceans have a effect on the ocean? would the ocean floor look different if there wasn't an ocean over it? Posted: 02 Apr 2019 11:53 AM PDT submitted by /u/superbeagleman [link] [comments]

Is it possible to see a simultaneous solar transit of Phobos and Deimos from anywhere on Mars? Posted: 02 Apr 2019 12:27 PM PDT I don't know much about the orbital periods/inclinations/etc. of Mars' two moons. I've seen video of each of them transiting the sun from some of the landers. I was curious to know if both could do it at the same time. If so, would you need to be at a specific spot or area on Mars to see it? If there was a double transit, would Deimos pass behind Phobos, or would they be at different solar latitudes? If it's not possible, is this due to orbital resonances? submitted by /u/AdmiralMemo [link] [comments]

Do Quarks have Volume? Posted: 02 Apr 2019 02:40 PM PDT My friend (u/carson_bay) and I were debating whether or not a quark has volume. On one side, we argued that they don't have volume until they combine to create other particles. On the other, we argued that they do have volume. We have both found conflicting sources that say they don't have volume, and others that say their radius is 10-18 metres. So, which is it? Do they have volume or not? Or is it a case where they both do and do not have volume until they are observed? submitted by /u/theKurdledNoodle [link] [comments]

If a submarine loses it ability to function underwater, is it possible to “tow” it back to the surface? Posted: 02 Apr 2019 03:13 PM PDT submitted by /u/ancient_horse [link] [comments]

Does the weight of food have any bearing on its caloric density? Posted: 02 Apr 2019 03:03 PM PDT Like the title says, obviously there isn't necessarily a clear '1 kg of food = X calories', as it's easy to come up with a counter example. However, is there any relationship there? I have a hard time imagining a 1000 calorie bit of semi-dense foam (think like a 100 cm3 cube of foam?), but I can imagine eating a (comparatively) heavy 100 cm3 cube of butter or something similar that might contain 1000 calories. ​ ​ UPDATE: In light of the answers to the original question (thanks everyone, good insights all around!) a quick follow up, is there a maximum amount of calories that a piece of food can contain for a particular density? Is it strictly limited by the size of a molecule of fat/etc. ? submitted by /u/jack_the_ninja [link] [comments]

How does the Event Horizon Telescope work? Posted: 02 Apr 2019 08:08 AM PDT The EHT has announced a press conference for April 10, where it is expected they will release their final images of Sgr A* (or at least set an official date for release). How was the project able to take an image of such a distant object? Is it an optical image or radio or something else? What are the science goals of this project beyond obtaining an image? submitted by /u/fireballs619 [link] [comments]

What evidence do we have of plate tectonics besides the shapes of the continents fitting together? Posted: 02 Apr 2019 08:14 AM PDT submitted by /u/fat_ali [link] [comments]

How do governments tell the difference between nuclear launches and peaceful space missions? Posted: 02 Apr 2019 04:26 AM PDT This has two parts: 1) Governments monitor the launch of nuclear missiles. But there are rockets being shot into space all the time. How do they know that those rockets aren't carrying nuclear weapons. 2) Satellites are shot into space regularly. How do we know that they aren't hiding nuclear weapons? submitted by /u/Flopsey [link] [comments]

How do astronomers hypothesize/determine what elements are present on planets based on telescopic images? Posted: 02 Apr 2019 07:39 AM PDT submitted by /u/weh_town [link] [comments]

How can we differenciate between cause and effect when we talk about psycological biases? Like some colours causing us to be more hungry. Posted: 02 Apr 2019 03:07 PM PDT Edit: Does red and yellow make us hungry because restaurants use it alot or do restaurants use it alot because it makes us hungry? submitted by /u/joka44 [link] [comments]

Has there been any introduction of arctic species to the antarctic or vice versa by research ships that visit both? Posted: 02 Apr 2019 04:26 AM PDT submitted by /u/nomnomnomnomRABIES [link] [comments]

What do the electrodes on an EKG measure? Posted: 02 Apr 2019 12:22 PM PDT I've been trying to learn how EKG's work and I understand what views the electrodes are detecting but I don't understand what the electrodes themselves are measuring. For example, lead I measures the positive flow of something (electrons?) from the left arm to the right arm. But if those leads are placed on the left and right wrist, how does the electrical activity of the myocytes effect the electrodes all the way at the limbs? submitted by /u/thereWasAnAttempt42 [link] [comments]

What happens to unborn that stay in the womb longer than usual? Posted: 02 Apr 2019 04:51 AM PDT If there is no artificial help like a ceasarean section and the mother doesn't get contractions, how long is the child able to stay in the womb? How will it further develop in that time? submitted by /u/bedefig [link] [comments]

If visible light and radio waves are both forms of electromagnetic radiation, do radio waves also exhibit wave/particle duality? If not, why? Posted: 02 Apr 2019 04:26 AM PDT submitted by /u/Sp00kyNoodle [link] [comments]

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AskScience AMA Series: Hi! We're Drs. Rebecca Schmidt from UC-Davis, and Cindy Lawler, from the National Institute of Environmental Health Sciences, part of NIH, and we work on how environmental factors can increase risk of Autism Spectrum Disorder. Ask us anything!

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• AskScience AMA Series: Hi! We're Drs. Rebecca Schmidt from UC-Davis, and Cindy Lawler, from the National Institute of Environmental Health Sciences, part of NIH, and we work on how environmental factors can increase risk of Autism Spectrum Disorder. Ask us anything!
• Where in your body does your food turn brown?
• As Everest grows about 1cm taller each year, is there a limit to how high it might get?
• Do nuclear reactors create Plutonium?
• On a thermodynamic level, how is it possible that both nuclear fusion and fission release energy?
• Do flowers produce pollen when they're not planted, i.e. if they're in water in a vase?
• Has the structure of an atom's nucleus been proven?
• Does a star fuse the iron at the end of it's life?
• Why don't nucleic acids precipitate during Slating-out extrations?
• What happens to a neutron star as it loses energy?
• Why do stars flicker in the night sky?
• What would happen if it was possible to split a proton using a quark?
• How did we find out what's at the center of the Earth?
• Do beavers reuse old dams/nests?
• Are there any planets that don’t orbit a star?
• Quick history of astronauts countering Van Allen radiation belts?
• Electric field lines in classical electromagnetism?
• Question About Carbon Dating: How Do We Know Prehistoric Levels of Carbon 14?
• Why can hyperventilating cause lethal changes in pH?
• Do we have any of the same cells from when we were born or have we virtually replaced ourselves?

AskScience AMA Series: Hi! We're Drs. Rebecca Schmidt from UC-Davis, and Cindy Lawler, from the National Institute of Environmental Health Sciences, part of NIH, and we work on how environmental factors can increase risk of Autism Spectrum Disorder. Ask us anything! Posted: 02 Apr 2019 04:00 AM PDT Today is the 12th annual World Autism Awareness Day. In honor of that, we're here to answer your questions about how our environment can influence risk of developing Autism Spectrum Disorder, or ASD, in our most vulnerable population -- our children. Autism encompasses a group of complex disorders involving brain development. Autism symptoms appear very early in childhood and include difficulties in social communication as well as restricted patterns of behavior and interests. Once considered rare, current estimates indicate that autism affects about one in 59 children in the United States. Scientists now know that ASD is most influenced by a combination of genetic and environmental factors. The National Institute of Environmental Health Sciences (NIEHS), part of NIH, supports autism research aimed at understanding how environmental exposures early in life may combine with genetic susceptibility to alter brain development to create the core symptoms of autism. One way we do that is to support researchers, like Dr. Schmidt, on her work focusing on maternal folic acid intake during pregnancy. Her research has found that maternal folic acid, the synthetic form of folate, is one of the first modifiable factors identified to date with the potential to reduce occurrence of ASD by 40 percent if taken near conception. Folic acid appears to protect against ASD especially in mothers and children who are genetically susceptible to ASD. Further, her provide evidence that folic acid supplements near conception might counter risk associated with gestational environmental contaminant exposures, like pesticides, air pollution, and phthalates. Her recent work shows that taking prenatal vitamins that contain folic acid in the first month of pregnancy is also associated with reduced recurrence of autism by about half in younger siblings of children with autism who are at higher risk due to shared genetics and environment. She is also looking at potential ways that folic acid might protect against autism. There are many ways the many nutrients in prenatal vitamins could be critical for brain development and could protect mechanistic pathways implicated in autism, such as epigenetics, DNA repair/synthesis, mitochondrial function, oxidative stress, and inflammation. Dr. Schmidt hopes that future research to understand the pathways involved could improve our understanding of autism etiology. Dr. Schmidt is also helping to lead the NIEHS-funded Markers of Autism Risk in Babies (MARBLES) study, which is a longitudinal study for pregnant women who have a biological child with ASD. The MARBLES study, which began in 2006, investigates possible prenatal and postpartum biological and environmental exposures and risk factors that may contribute to the development of autism. Ask us anything about Dr. Schmidt's research on folic acid, the MARBLES study, or other NIEHS-funded research on the environmental risk factors of ASD! Your hosts today are: Rebecca J. Schmidt, Ph.D., assistant professor in the Department of Public Health Sciences and the MIND Institute at UC-Davis. Rebecca enjoys flying small airplanes, paddle boarding, backpacking, and triathlons! Cindy Lawler, Ph.D., chief of the Genes, Environment, and Health Branch in the Division of Extramural Research and Training at NIEHS. Cindy is an avid walker who usually logs more than ten miles each day, and is also well known for her decorated cut-out sugar cookies! submitted by /u/AskScienceModerator [link] [comments]

Where in your body does your food turn brown? Posted: 01 Apr 2019 10:59 AM PDT I know this is maybe a stupid question, but poop is brown, but when you throw up your throw up is just the color of your food. Where does your body make your food brown? (Sorry for my crappy English) submitted by /u/Ayko03 [link] [comments]

As Everest grows about 1cm taller each year, is there a limit to how high it might get? Posted: 02 Apr 2019 05:14 AM PDT submitted by /u/photolouis [link] [comments]

Do nuclear reactors create Plutonium? Posted: 02 Apr 2019 06:08 AM PDT From my understanding, enriched uranium used in reactors has at best 20% U-235 content, while the majority is U-238. Since neutron radiation transmutes U-238 > U-239 and then decay of U-239 > Np-239 > Pu-239 how much plutonium is created by the fission process? And why isn't this radioactive 'waste' used since plutonium is fissile? submitted by /u/Raiden60 [link] [comments]

On a thermodynamic level, how is it possible that both nuclear fusion and fission release energy? Posted: 01 Apr 2019 11:44 PM PDT I know fission involves splitting atomic nuclei. Splitting a larger nucleus into smaller nuclei I think would be entropically favorable and would have a negative deltaG. So it follows that fission would release energy. Following that logic in reverse would imply fusion would not release energy at all and actually be endothermic. This is obviously not true but I'm wondering why. submitted by /u/pswjt1 [link] [comments]

Do flowers produce pollen when they're not planted, i.e. if they're in water in a vase? Posted: 02 Apr 2019 05:07 AM PDT Someone at work whose mum is a florist was saying she bitches about people in her shop complaining of hayfever-like symptoms, as apparently flowers not planted don't produce pollen. I have a feeling that this is bullshit but I can't find anything online in my own searching. Thanks submitted by /u/FloopersRetreat [link] [comments]

Has the structure of an atom's nucleus been proven? Posted: 02 Apr 2019 01:54 AM PDT I've seen in textbooks that the nucleus of an atom looks like several sphere compacted into a bigger sphere, or whatever. My thoughts are that this would have minute effects on how the nucleus affects the atom as a whole from atom to atom of the same element. Is this real? Do two atoms of the same element with different proton and neutron arrangements have miniscule differences in behavior? Or, does the arrangement not exist and it's more like some kind of 'energy soup' or light show? submitted by /u/anyusernameworks12 [link] [comments]

Does a star fuse the iron at the end of it's life? Posted: 02 Apr 2019 06:31 AM PDT So this was a lot harder to find out than i thought. People write it so loosely. They say when a star fuse silicon into iron its going to "die"/go supernova, and it cant fuse iron because it takes to much energy. So fusion stops and it implodes because it does not have that pressure of fusing. Other say when it starts to fuse iron it require more energy than it gives off, and so its going to loose energy and "die"/go supernova so in general does it actually fuse some of the iron or does it stop at the silicon to iron and it does NOT fuse the iron?. I know that it takes a lot of energy to fuse iron, and that iron is at the top of the "binding energy curve" so it does not give of more energy if fused. and that it makes heavier elements when it goes supernova, its just this "little" detail. submitted by /u/Staggy123 [link] [comments]

Why don't nucleic acids precipitate during Slating-out extrations? Posted: 02 Apr 2019 06:25 AM PDT *Salting-out I understand that the process precipitates proteins by interecting with their charges and making them "less soluble", but how is DNA "protected" from this? submitted by /u/Roxicaro [link] [comments]

What happens to a neutron star as it loses energy? Posted: 01 Apr 2019 04:52 PM PDT So a neutron star has oviously a finite amount of available energy, like any other star. I'm expecting it will cool down over a very long time, but then what? Will it undergo an explosion, like a red giant turning into a white dwarf? Will it just cool down, like a white dwarf turning into a black dwarf? If a neutron star has no longer sufficient energy to glow, what would it look like to a human observer, if it was lit by the light of a star like our Sun? submitted by /u/VirtualDeliverance [link] [comments]

Why do stars flicker in the night sky? Posted: 01 Apr 2019 07:21 PM PDT submitted by /u/krisoco [link] [comments]

What would happen if it was possible to split a proton using a quark? Posted: 01 Apr 2019 02:56 PM PDT I'd like to preface by saying I'm extremely new to splitting atoms and the technology behind it. I've been doing some research into nuclear energy and I think I understand the very basic concept of a neutron is fired at an atom which causes a chain reaction of the atom continuously splitting which creates energy. I know that inside protons are quarks, not too familiar with those but I'm learning. My question is if we could capture quarks and fire them at a proton would that create the same amount of energy, or any energy at all? submitted by /u/redslayer [link] [comments]

How did we find out what's at the center of the Earth? Posted: 01 Apr 2019 06:22 PM PDT Dumb question, but obviously we never reached the center, yet we the core is made of metal. How did we find this out? And the center of the Earth can also reach incredibly high temperatures. Why is it so hot in the center? Is it mainly due to magma or is there another factor? submitted by /u/Pakmanjosh [link] [comments]

Do beavers reuse old dams/nests? Posted: 01 Apr 2019 04:36 PM PDT submitted by /u/Shadow_B [link] [comments]

Are there any planets that don’t orbit a star? Posted: 01 Apr 2019 02:44 PM PDT submitted by /u/Aidanmartin3 [link] [comments]

Quick history of astronauts countering Van Allen radiation belts? Posted: 01 Apr 2019 10:40 PM PDT I vaguely remember being told that the first astro(and kozmo)nauts didnt know or care about the Van Allen radiation belts, and that they got stupidly lucky surviving pasing trough them. Is this true, and when did space agencies started protecting astronauts from radiation? I would be very gratefull for a answer, or a link to a very simple article/video on the subject. I did try googling the answer myself, before bothering you lovely smart people. But all the search results for Van Allen belts are 1 short wiki article and 700 000 MOON LANDING HOAX ILLUMINATI DONT WANT YOU TO KNOW THE TRUTH ABOUT ATLANTIS LEVITATION!!!!!! Im afraid that if I look at that search page any longer I might get brain cancer, so please save me from cancer. submitted by /u/Lor360 [link] [comments]

Electric field lines in classical electromagnetism? Posted: 01 Apr 2019 11:21 AM PDT This may be a dumb question for most people here, but this has been bothering me for awhile, and I am just a layman. Positive charges have lines "pointing away" from the charge while negative charges have lines "pointing toward" the charges. ​ Other than it's the "direction of the electric field," I don't know what the lines actually represent, and I don't know what the electric field actually is, but it looks like positive charges emit unlimited electric energy for as long as the charges exist, and negative charges consume unlimited electric energy. But unless I am missing something, electrons and photons have finite energy. ​ Any help appreciated. Thanks. submitted by /u/DramaticRadish [link] [comments]

Question About Carbon Dating: How Do We Know Prehistoric Levels of Carbon 14? Posted: 01 Apr 2019 10:28 AM PDT Hey all! I've been reading about radio carbon dating and I think I understand the basics. Carbon comes in two stable isotopes and an unstable isotope, Carbon 14. Carbon 14 is created in the atmosphere and eventually finds its way into the food cycle and into our bodies. We date things by looking at the percentage of Carbon 14 that is left in remains. ​ What I don't understand is how do we know that the amount of Carbon 14 that was around 20k years ago is similar to what we have today? Hypothetically, say I die today and my body has 10% Carbon 14 and 90% stable Carbon. From what I understand, and in basic terms, in ~5k years my remains would have 5% Carbon 14 and 95% stable Carbon. So what evidence is there that 20k years ago there were similar levels of Carbon 14 in living organisms? What if, 20k years ago the atmosphere wasn't producing as much C14 and something died containing only 1% C14 and 99% stable carbon? We find it today and it only has 1/16th of the 1% of C14 and we assume its age is much older? I'm sure there is a way we can tell, but I was just curious. Let me know if I'm misunderstanding anything or if my question needs more information! Thanks! ​ submitted by /u/notalltogetherhere [link] [comments]

Why can hyperventilating cause lethal changes in pH? Posted: 01 Apr 2019 11:01 AM PDT submitted by /u/Hellohowartthou [link] [comments]

Do we have any of the same cells from when we were born or have we virtually replaced ourselves? Posted: 01 Apr 2019 07:44 AM PDT submitted by /u/Expert99 [link] [comments]

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Why are the Great Basin, Mohave and Sonoran Deserts considered distinct?

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• Why are the Great Basin, Mohave and Sonoran Deserts considered distinct?
• Excess Leptin, is that a thing?
• What are the long term consequences of plastic in the oceans?
• Do sounds sound different at higher altitudes?
• Why is the speed of sound significant with regard to aerodynamics?
• Do deciduous plants grow new leaves from the exact spots where the old leaves fell? Or only from new growth in the last year?
• What's the difference between acidosis and alcohol intoxication?
• Did the atomic bombs dropped on Hiroshima and Nagasaki have any effect on weather patterns? Either in the short term or long term? Close proximity or worldwide?
• How are oasis’ formed and survive?
• How accurate are the sounds of planets that NASA manages to record?
• Do overweight people have extra amount of nerves and pain receptors distributed around their body?
• Would it be possible to preserve a brain?
• How are sheer drop cliffs created?
• If you die from an allergic reaction do the resulting physical symptoms such as hives or swelling remain after death?
• Why are the colors of a rainbow always in the same order?
• How do flies maintain visual accuracy and a sense of surrounding at such high speeds of movement?
• How do scientists discover new species?
• Is there a limit on the "brightness" a typical fiber optic cable can carry?
• Are there any organisms that don’t need carbon dioxide or oxygen to survive?
• Do other kinds of waves “break” like waves of water in the ocean?
• How does the malfunction of a peptidase cause accumulation of lipid pigments in Neuronal Ceroid Lipofuscinosis?
• How does electric shock kill you?

Why are the Great Basin, Mohave and Sonoran Deserts considered distinct? Posted: 31 Mar 2019 06:27 PM PDT Looking at a map, these three deserts look like they are right next to each other. Why wouldn't they be known as one big desert? submitted by /u/sirxez [link] [comments]

Excess Leptin, is that a thing? Posted: 31 Mar 2019 07:27 AM PDT Since Leptin deficiency is a thing, often leading towards obesity, where you're essentially always hungry, is there a situation, where, naturally, you'd have excess leptin? I know of the feedback loop where if you don't eat much, you get reduced leptin and always be hungry, and if you eat too much, you produce more leptin to signal that you're satiated. Would there be a situation where, like leptin-deficient people, you'd have natural excess leptin, and never really be hungry? Is there any correlation between this and anorexia? There is definitely a correlation between not enough leptin and eating too much, but is there one for the opposite? submitted by /u/phermyk [link] [comments]

What are the long term consequences of plastic in the oceans? Posted: 01 Apr 2019 06:23 AM PDT I know little to nothing. Big plastic is not what I am talking about but the micro plastics. I have read that the real bad plastic comes from clothes in the form of micro particles that are eaten by plankton. This started in the 50s or something, don't believe me on the date, and today there is not much we can do to reverse this. What are the effects of plastic in living things? to they go in and out? does plastic makes living things sick? If most plankton (hypothetically) is full with plastic and the whole ocean food chain gets plastic, will we too? and again, long term consequences. submitted by /u/One_Cold_Turkey [link] [comments]

Do sounds sound different at higher altitudes? Posted: 01 Apr 2019 06:04 AM PDT If you make a sound wave at a higher altitude where the density of air is a lot lower, does that for instance, change the pitch of the sound? (compared to at sea level) submitted by /u/Babaguscooties [link] [comments]

Why is the speed of sound significant with regard to aerodynamics? Posted: 01 Apr 2019 04:41 AM PDT Why does the speed of a sound wave through air have any relationship or bearing on a completely different type of object moving through the same medium at the same speed? submitted by /u/buddhahat [link] [comments]

Do deciduous plants grow new leaves from the exact spots where the old leaves fell? Or only from new growth in the last year? Posted: 01 Apr 2019 07:09 AM PDT [Cross-posted from r/botany] I hope I can explain my question well enough to get an answer! From what I understand, leaves and new stems only grow from nodes on a stem. The type of plant determines whether one or more leaves will grow per node, and those leaves grow as soon as the node is created, along with an axillary bud. The axillary bud might 'wait' a long time but at any point it may start growing a new stem (not a single leaf). Am I right so far? So, how does all this relate to deciduous plants that lose their leaves? Once a particular node has lost its leaf/ves, will it grow new leaves from the same node in the following spring? Does the axillary bud become a leaf bud instead of a stem? If so, what happens when that leaf is dropped in the year after that - is another new bud produced? Or are new leaves only produced at new nodes? If that's the case, how does the tree produce enough new stem growth that one years' worth of new nodes can grow enough leaves to support the entire tree? At what point in the growth season do new nodes stop making new leaves and decide to 'wait' until the following spring? submitted by /u/noibs [link] [comments]

What's the difference between acidosis and alcohol intoxication? Posted: 01 Apr 2019 07:21 AM PDT Both have very similar side effects so I'm wondering what is the difference and are they related in any sort of way. Need more of a chemistry answer rather than a biology one submitted by /u/ipatman28 [link] [comments]

Did the atomic bombs dropped on Hiroshima and Nagasaki have any effect on weather patterns? Either in the short term or long term? Close proximity or worldwide? Posted: 31 Mar 2019 09:23 PM PDT submitted by /u/xraig88 [link] [comments]

How are oasis’ formed and survive? Posted: 31 Mar 2019 07:08 PM PDT Where does the water come from and how does it not just evaporate? submitted by /u/annalueb [link] [comments]

How accurate are the sounds of planets that NASA manages to record? Posted: 01 Apr 2019 05:03 AM PDT submitted by /u/olympicscent [link] [comments]

Do overweight people have extra amount of nerves and pain receptors distributed around their body? Posted: 01 Apr 2019 07:26 AM PDT I always thought the amount of nerves and pain receptors is fixed regardless the size you are, and the bigger your are, the less nerves density you have, which should make you less sensitive and more resistance to pressure pain. However a study: "Body mass index and distribution of body fat can influence sensory detection and pain sensitivity" I ran into suggested the opposite. Do overweight people grow "extra" amount of nerves to cover their bigger surface area? submitted by /u/5210az [link] [comments]

Would it be possible to preserve a brain? Posted: 01 Apr 2019 01:23 AM PDT As the title already says; I wonder if it would be possible to preserve a brain by connecting it to an artificial heart (ofcourse with nutrients). I don't think it would be possible but I can't think of a reason why not but there sure is a very simple explanation. I hope you guys can help me figure this one out. Thanks in advance. submitted by /u/newlander007 [link] [comments]

How are sheer drop cliffs created? Posted: 31 Mar 2019 09:59 PM PDT I know that a lot of it deals with erosion and plates but what are the specific circumstances needed to form a sheer cliff? submitted by /u/Black313x [link] [comments]

If you die from an allergic reaction do the resulting physical symptoms such as hives or swelling remain after death? Posted: 01 Apr 2019 06:17 AM PDT Let's say I was deathly allergic to something such as a bee sting. If I got stung and broke out in hives and my face swelled up and then I later died without the hives and swelling clearing up, would those hives and swelling remain? Or would do the reactions clear up after death? submitted by /u/Akuba55 [link] [comments]

Why are the colors of a rainbow always in the same order? Posted: 01 Apr 2019 05:02 AM PDT submitted by /u/brokecaucasian [link] [comments]

How do flies maintain visual accuracy and a sense of surrounding at such high speeds of movement? Posted: 31 Mar 2019 10:37 PM PDT submitted by /u/thedivtagguy [link] [comments]

How do scientists discover new species? Posted: 31 Mar 2019 10:34 PM PDT Do scientist go to the field and discover new species by luck or do they have a systematic/efficient way of searching? submitted by /u/On9999 [link] [comments]

Is there a limit on the "brightness" a typical fiber optic cable can carry? Posted: 31 Mar 2019 06:47 PM PDT I want to give an example of what I mean: Supposing you are living underground, but you can't just make a hole in the ceiling to get sunlight, can you use fiber optic cable to catch the sunlight on the surface and redirect it to your underground home ? And if yes, will you be able to tell the difference ? submitted by /u/Exymat [link] [comments]

Are there any organisms that don’t need carbon dioxide or oxygen to survive? Posted: 31 Mar 2019 05:36 PM PDT submitted by /u/PirateFish339 [link] [comments]

Do other kinds of waves “break” like waves of water in the ocean? Posted: 31 Mar 2019 02:15 PM PDT Seeing a slo-mo of a wave breaking inspired this question. Waves of water can break, especially when they near the shore, and the water in the wave comes tumbling down over/in front of it. Is this process physically possible with any other waves in any other medium, or unique to the mass of water, speed and frequency of ocean waves, etc.? submitted by /u/simplysalamander [link] [comments]

How does the malfunction of a peptidase cause accumulation of lipid pigments in Neuronal Ceroid Lipofuscinosis? Posted: 01 Apr 2019 01:58 AM PDT So first off a disclaimer: Yes, this overly specific question did arise because of an assignment, however the assignment itself is about a treatment and is not focused on understanding of the disease. I can complete the assignment without this knowledge, but my sources all agree on the cause and the symptoms while I can't wrap my head around how they are specifically related. I'm hoping to catch an expert here since my teacher is not an expert on this disease. I hope the mods will keep this up. ​ Late Infantile Neuronal Ceroid Lipofuscinosis (LINCL) is caused by a mutation in the CLN2 gene, causing a defect in the enzyme tripeptylpeptidase1 (TPP1). This enzyme cleaves tripeptides from the N-terminus of the target protein with no known substrate specificity. The defect in this enzyme causes lysosomal accumulation of lipofuscins, lipid containing pigments. From the structures I found lipofuscins do not contain peptide bonds, so they shouldn't be cleaved by TPP1. ​ Now my question: How are these two related? There seems to be a consensus on the cause and effect of the disease, but I don't get how a defect peptidase can cause an accumulation of lipids. submitted by /u/Magisidae [link] [comments]

How does electric shock kill you? Posted: 31 Mar 2019 09:25 PM PDT How does electrocution kill a person? Does it literally cook your brain? Does it constrict your heart forcing it to stop? Do we even know exactly how it kills you? Also: not sure what flair to add to this. Medicine is the only thing I can think of that would relate to it. submitted by /u/paytonimore [link] [comments]

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