As someone gets more obese, do their actual skin cells stretch or do they replicate fast enough to keep up with the increasing surface area?

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• As someone gets more obese, do their actual skin cells stretch or do they replicate fast enough to keep up with the increasing surface area?
• If iron loses it's magnetism around 800 degrees C, how can the earth's core, at ~6000 degrees C, be magnetic?
• Can artificial intelligence help with sustaining nuclear fusion?
• How are wind turbines accelerated from rest? Purely from wind or are they jump-started?
• SpaceX Falcon Heavy Launch Megathread
• Will UHVDC power lines keep increasing in voltage?
• How is our brain able to pinpoint specific voices in crowds and then focus in on what they're saying?
• Life expectancy with Down Syndrome was just ~24 years as recently as 1985. Now it's 60+. What advances are most responsible for this?
• The overuse of antibiotics has lead to the development of antibiotic resistant "Superbugs". How much of this phenomenon is due to industrial agriculture and how much of it is due to misuse of antibiotics in healthcare?
• How does our immune system know not to attack gut flora like it would a bacterial infection?
• If a probe was sent to drill into the ice of Europa to search for life, couldn't even a single microbe potentially introduce life to the planet or threaten their biosphere? Can we render a probe truly, truly sterile and if so how can such be done?
• Why does something straight, like ribbon or hair, curl when you drag scissors along its surface?
• If we are filling space with space junk, will there come a time when there is too much in space to send anything up because of collision risk? If so, is there a way to clean up all the junk?
• If the salt water in the ocean accumulated over time was there ever a point where it was all freshwater?
• Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
• What makes an orange orange?
• What happens to the mass of an irradiated brain tumor?
• Why can a person live with one lung, but die from a unilateral pulmonary embolism?
• Is there enough atmosphere to hear music playing on Mars?
• At what temperature do Bose-Einstein Condensates and other exotic states of matter exist?
• Since the speed of light is the maximum speed anything can reach, does that mean the amount of energy any mass can have is finite?
• Is it possible with unlimited fuel to reach the speed of light in space? Or is there a maximum speed that can be reached?

As someone gets more obese, do their actual skin cells stretch or do they replicate fast enough to keep up with the increasing surface area? Posted: 07 Feb 2018 02:58 AM PST A follow up question would be: If the cells stretch more than they replicate, does this mean that there is a lower concentration of nerve endings? Would stretched skin around large fat deposits be less sensitive to touch? submitted by /u/Husibrap [link] [comments]

If iron loses it's magnetism around 800 degrees C, how can the earth's core, at ~6000 degrees C, be magnetic? Posted: 06 Feb 2018 07:39 AM PST submitted by /u/BeanBayFrijoles [link] [comments]

Can artificial intelligence help with sustaining nuclear fusion? Posted: 07 Feb 2018 04:03 AM PST The way I understand it, the main challenge to sustainable nuclear fusion is the confinement of plasma within the reactor. The approach to doing this currently is to use fixed magnetic fields to confine the plasma into a certain shape (for example: toroid in a tokamak reactor). The issue is that sometimes, plasma still manages to escape this shape, and therefore fusion is broken. Here's my question, wouldn't it make more sense to use deep learning technology to train a program to monitor the plasma inside the reactor at different points and then alter the strength of the magnetic fields being emitted accordingly so that it results in the plasma staying in the shape we want for sustained fusion? submitted by /u/pknofal [link] [comments]

How are wind turbines accelerated from rest? Purely from wind or are they jump-started? Posted: 07 Feb 2018 05:35 AM PST Do they need a motor to get them accelerated to a reasonable rpm or is their movement purely dependent on the wind? submitted by /u/kingoldmaster [link] [comments]

SpaceX Falcon Heavy Launch Megathread Posted: 06 Feb 2018 06:48 PM PST There are a lot of questions about the launch of the Falcon Heavy Demonstration Mission on February 6, 2018 and its payload, the Tesla Roadster. We have a number of engineers, physicists, and astronomers here to help answer your questions! submitted by /u/AskScienceModerator [link] [comments]

Will UHVDC power lines keep increasing in voltage? Posted: 07 Feb 2018 06:09 AM PST In the 50s Russia had a 100 kV line, China built a 1100 kV line in 2016. Will 2100 have a 10,000 kV project? I wondered if anyone had an idea if there are theoretical limits or cost projections saying if this trend will continue. submitted by /u/BernieMeinhoffGang [link] [comments]

How is our brain able to pinpoint specific voices in crowds and then focus in on what they're saying? Posted: 06 Feb 2018 06:05 PM PST submitted by /u/MrComet101 [link] [comments]

Life expectancy with Down Syndrome was just ~24 years as recently as 1985. Now it's 60+. What advances are most responsible for this? Posted: 06 Feb 2018 12:05 PM PST Was there some specific problem that was solved, or was it just a cumulative effect from a lot of little fixes? What is still causing the remaining gap between the life expectancy of someone with Down Syndrome and the 75+ years of someone without? submitted by /u/N64_Chalmers [link] [comments]

The overuse of antibiotics has lead to the development of antibiotic resistant "Superbugs". How much of this phenomenon is due to industrial agriculture and how much of it is due to misuse of antibiotics in healthcare? Posted: 06 Feb 2018 06:09 PM PST submitted by /u/North-East-Lights [link] [comments]

How does our immune system know not to attack gut flora like it would a bacterial infection? Posted: 06 Feb 2018 09:36 PM PST submitted by /u/StyBL [link] [comments]

If a probe was sent to drill into the ice of Europa to search for life, couldn't even a single microbe potentially introduce life to the planet or threaten their biosphere? Can we render a probe truly, truly sterile and if so how can such be done? Posted: 06 Feb 2018 08:08 PM PST Getting 99.99% of microbes seems viable and for purposes on Earth that is usually enough but do we have the capacity to get EVERY last microbe and if so, how? submitted by /u/JohnnyFiveOhAlive [link] [comments]

Why does something straight, like ribbon or hair, curl when you drag scissors along its surface? Posted: 06 Feb 2018 04:58 PM PST submitted by /u/PilotInspektor [link] [comments]

If we are filling space with space junk, will there come a time when there is too much in space to send anything up because of collision risk? If so, is there a way to clean up all the junk? Posted: 06 Feb 2018 11:21 PM PST submitted by /u/Torien0 [link] [comments]

If the salt water in the ocean accumulated over time was there ever a point where it was all freshwater? Posted: 06 Feb 2018 11:42 PM PST submitted by /u/nerovox [link] [comments]

Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 07 Feb 2018 07:07 AM PST 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]

What makes an orange orange? Posted: 06 Feb 2018 06:53 PM PST submitted by /u/Gibby_Games [link] [comments]

What happens to the mass of an irradiated brain tumor? Posted: 06 Feb 2018 06:13 PM PST I understand that radiation stops mitosis, so the tumor no longer grows. What happens to the tumor's tissue after radiation treatment? Is it considered "dead"? Does it shrink? Can it be re-absorbed? submitted by /u/chunkmcrunfast [link] [comments]

Why can a person live with one lung, but die from a unilateral pulmonary embolism? Posted: 06 Feb 2018 06:13 PM PST Just studying about DVT's and PE's and was wondering. Is it because the PE puts you into right ventricular heart failure? Thanks! Edit: Punctuation. submitted by /u/NotAMedic720 [link] [comments]

Is there enough atmosphere to hear music playing on Mars? Posted: 06 Feb 2018 02:35 PM PST submitted by /u/GeeZeR_FroG [link] [comments]

At what temperature do Bose-Einstein Condensates and other exotic states of matter exist? Posted: 06 Feb 2018 11:57 PM PST All I can seem to find is that "Bose-Einstein Condensates exist in very low temperatures whilst plasma and quark-gluon plasma exists at very high temperatures." Does anyone know exact temperatures that these states of matter exist? For example, does a BEC only occur in temperatures ranging 1 – 10 kelvin or 1 – 10 nanokelvins? What order of magnitude of temperature (i.e. 10,000 K, 100,000 K — not too sure if I'm using the right terminology here) would plasma or quark-gluon plasma exist? Thanks! submitted by /u/HaythamJubilee [link] [comments]

Since the speed of light is the maximum speed anything can reach, does that mean the amount of energy any mass can have is finite? Posted: 06 Feb 2018 03:01 PM PST To further explain my question, we know that all matter contains some form of energy. Since the limit of how fast anything can move is the speed of light, does that mean that there is an actual finite number of energy that any mass can reach? If something were to move at the speed of light, the energy of the system can be calculated easily using formulas we know, but it only translate into energy from movement if I remember correctly. For example, if a mass were to travel at the speed of light, let's say it has 1000 joules. Can the system have more than 1000 joules? Seeing as how a system can have energy beyond kinetic, it should be able to have more than 1000 joules, because that only quantifies the kinetic portion of the system. However, is this true? If the system holds more energy, would that not translate into movement? From my understanding, almost all energy has to do with movement. For example, temperature could be explained as the movement/vibrations of matter. The hotter it is the more motion the particles have, which is why objects at absolute zero don't have any motion (0 energy). Or at least that's what I think, but I would really like an answer to this question. Thanks submitted by /u/Parkadons [link] [comments]

Is it possible with unlimited fuel to reach the speed of light in space? Or is there a maximum speed that can be reached? Posted: 06 Feb 2018 04:56 PM PST submitted by /u/Danny_559 [link] [comments]

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Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

The video game "Subnautica" depicts an alien planet with many exotic underwater ecosystems. One of these is a "lava zone" where molten lava stays in liquid form under the sea. Is this possible?

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• The video game "Subnautica" depicts an alien planet with many exotic underwater ecosystems. One of these is a "lava zone" where molten lava stays in liquid form under the sea. Is this possible?
• The James Webb Space Telescope is incredibly precisely made. But it will be mounted on top of several tons of rocket. How do they make sure it doesn’t get warped in flight?
• Do women who have their babies through a surrogate mother still risk the chance of postnatal depression or does it rely on the woman having the child herself?
• How do hibernating animals conserve their muscle strength after months without using them?
• [Chemistry] My seed flour pancakes turn blue-green after cooking. Am I consuming a poisonous metal oxide?
• What is my computer doing when it's pretending to troubleshoot?
• What is happening when we see "stars"?
• What is the bond called between dissolved oxygen and water, is it a bond?
• If the moon is slowly drifting away from the Earth, does that mean it will no longer be tidally locked in a few million years?
• Can centipedes and/or millipedes naturally move backwards?
• Are there any medical benefits to ‘suffering through’ a minor illness without taking medications such as steroids and antibiotics?
• How do GRB's work?
• If someone has one strain of a virus, can you catch a different strain of it from them or can that strain manifest / change to another strain in your body?
• Why does the Trinity site still have high background radiation, but Hiroshima and Nagasaki do not?
• How do flowers follow the sun?
• Do vegetarians exhibit physiologic responses to sensory stimulation by non-vegetarian foods?
• How does adding a neutron to an atom change it so drastically?
• Why can we only listen to one person talking at a time?
• how is the nicotine in e-cig fluid and other smoking replacement products made?

The video game "Subnautica" depicts an alien planet with many exotic underwater ecosystems. One of these is a "lava zone" where molten lava stays in liquid form under the sea. Is this possible? Posted: 05 Feb 2018 10:43 AM PST The depth of the lava zone is roughly 1200-1500 meters, and the gravity seems similar to Earth's. Could this happen in real life, with or without those conditions? submitted by /u/StandsForVice [link] [comments]

The James Webb Space Telescope is incredibly precisely made. But it will be mounted on top of several tons of rocket. How do they make sure it doesn’t get warped in flight? Posted: 06 Feb 2018 03:18 AM PST submitted by /u/Cavtheman [link] [comments]

Do women who have their babies through a surrogate mother still risk the chance of postnatal depression or does it rely on the woman having the child herself? Posted: 06 Feb 2018 01:07 AM PST I hope this is the right place to ask this but I also wondered if there were other factors that influenced this, does it depend on the mother's mental health, age and other such influences? If so does the surrogate mother experience some form of postnatal depression despite not caring for the child in the long term? submitted by /u/cauliflowerandcheese [link] [comments]

How do hibernating animals conserve their muscle strength after months without using them? Posted: 05 Feb 2018 08:17 PM PST How do they don't suffer from muscular atrophy, even for several months without using their muscles? submitted by /u/gabrielbom [link] [comments]

[Chemistry] My seed flour pancakes turn blue-green after cooking. Am I consuming a poisonous metal oxide? Posted: 06 Feb 2018 02:16 AM PST Picture here, with tuna, pickles, and tomato topping. I grind flax seed, sesame seed, and sunflower seed to make a flour. Then I add egg, rapeseed oil, baking soda, and vinegar. Once cooked they slowly start changing color on the inside. The parts that were browned on the frying pan stay "brown", but the rest turns into a deep blue-green color. The flavor does not noticeably change after sitting for 12 hours. Could this be poisonous cupric oxide in my pancakes or some other dangerous oxide? submitted by /u/whiteypoints [link] [comments]

What is my computer doing when it's pretending to troubleshoot? Posted: 05 Feb 2018 08:46 AM PST I am having trouble connecting to the Wi-Fi at school. On Chrome the "There is no Internet Connection" page has the option to run Windows network diagnostics. Clicking on the option takes you to a loading screen where it says it's checking and troubleshooting all sorts of things, and it's final conclusion is to find the Wi-Fi router and turn it off and on again. This is like a bad joke from the IT Crowd! What is my computer doing when it says it's troubleshooting things? Is that just a button to press to make users think their computer is an omniscient being with the illusion of control? Does it ever actually, after going through all those loading screens that say "detecting problems", detect a problem and then solve it? submitted by /u/yummybutts [link] [comments]

What is happening when we see "stars"? Posted: 06 Feb 2018 01:56 AM PST Various times I have seen stars in my direct and peripheral vision, what causes this to happen and what am I seeing? submitted by /u/JKSimmonds [link] [comments]

What is the bond called between dissolved oxygen and water, is it a bond? Posted: 06 Feb 2018 12:44 AM PST Is there a bond or is it just diffusion due to atmospheric pressure? I'm interested in the mechanism that allows for the dissolution of oxygen in water and the relationship with temperature and salinity. Reference information would be appreciated. submitted by /u/Raggie86 [link] [comments]

If the moon is slowly drifting away from the Earth, does that mean it will no longer be tidally locked in a few million years? Posted: 05 Feb 2018 11:16 AM PST submitted by /u/ClassicalGalaxy [link] [comments]

Can centipedes and/or millipedes naturally move backwards? Posted: 05 Feb 2018 09:46 PM PST submitted by /u/AbyssalMyth [link] [comments]

Are there any medical benefits to ‘suffering through’ a minor illness without taking medications such as steroids and antibiotics? Posted: 05 Feb 2018 10:19 PM PST Given that you're healthy enough otherwise to successfully make it through the illness without other complications. submitted by /u/freckledcat [link] [comments]

How do GRB's work? Posted: 06 Feb 2018 04:17 AM PST If nothing can escape a black hole, including light, how do they emit radiation? Do gamma Ray bursts travel faster than light for a moment? submitted by /u/bstillwell15 [link] [comments]

If someone has one strain of a virus, can you catch a different strain of it from them or can that strain manifest / change to another strain in your body? Posted: 05 Feb 2018 11:49 PM PST submitted by /u/sk3pt1c [link] [comments]

Why does the Trinity site still have high background radiation, but Hiroshima and Nagasaki do not? Posted: 05 Feb 2018 09:14 AM PST So I was reading a Wikipedia article about the Trinity site where they tested the first atomic bomb (https://en.wikipedia.org/wiki/Trinity_%28nuclear_test%29?wprov=) and it says "More than seventy years after the test, residual radiation at the site is about ten times higher than normal background radiation in the area. The amount of radioactive exposure received during a one-hour visit to the site is about half of the total radiation exposure which a U.S. adult receives on an average day from natural and medical sources." Meanwhile, Hiroshima and Nagasaki are considered to have normal levels of background radiation. Some articles I read attribute the lack of background radiation levels in these places to the bombs being detonated in the air versus ground level. So why would they be different? I'm guessing perhaps the Trinity bomb was detonated closer to the ground? And why does ground versus air detonation affect the background radiation? Thanks in advance! submitted by /u/lawberdasher [link] [comments]

How do flowers follow the sun? Posted: 06 Feb 2018 03:28 AM PST How do flowers control which way they're facing and how do they know when they're facing the right way? submitted by /u/AnonymousCookie37 [link] [comments]

Do vegetarians exhibit physiologic responses to sensory stimulation by non-vegetarian foods? Posted: 06 Feb 2018 01:51 AM PST I.e. will a vegetarian person involuntarily salivate at the sight/smell of cooked meat, or have other digestive, endocrinologic etc. responses to non-vegetarian foods? submitted by /u/Your_average_Russian [link] [comments]

How does adding a neutron to an atom change it so drastically? Posted: 05 Feb 2018 08:02 AM PST For example, how does adding a neutron to deuterium turn it into tritium and make it so dangerous? submitted by /u/lightningundies [link] [comments]

Why can we only listen to one person talking at a time? Posted: 06 Feb 2018 12:43 AM PST submitted by /u/badRLplayer [link] [comments]

how is the nicotine in e-cig fluid and other smoking replacement products made? Posted: 06 Feb 2018 12:40 AM PST Is it harvested from tobacco leaves and purified, or made synthetically? The reason I ask is because I have heard growing tobacco is hard on the farmland and wondering if the rise of vaping is going to disrupt that industry, or whether it will be business as usual, just in a different form. submitted by /u/einarfridgeirs [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 Panel of Scientists XVIII

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• AskScience Panel of Scientists XVIII
• How effective are the black bars football players put under their eyes?
• When humans started launching satellites into space, did they end up discovering previously unknown islands?
• What is more environmentally friendly to drink soda, a aluminum can or a plastic bottle?
• Do various primates recognize humans as being primates as well?
• Would an ion-powered probe be able to get off a small asteroid?
• If gravity is the weakest of the fundamental forces, why aren't celestial bodies movement, especially those with magnetic properties, governed by electromagnetism rather than gravity?
• How do whales, the largest mammals on earth that inhabit the water, end up beached?
• Why does Kosovo have so many more people than Montenegro?
• How are expiration dates assigned to medicine?
• How does emergency contraception (morning after pill) containing levonorgestrel work? Pre-fertilization or post-fertilization MOA?
• What was the earliest known relationship between early humans and wolves/dogs, and what did they both stand to gain from the relationship?
• In a perfectly conductive wire, does information travel at the speed of light?
• What substances polluted the Earth in the 17th and 18th Century?
• The hazard symbols for highly flammable and oxydizing are very similar. Why is the oxydizing symbol so similar and what does it visually represent?
• What are you actually feeling when you feel like you have to pee?
• Is it possible to use a planets magnetic field as a particle accelerator?
• Why do rotating black holes look so weird?
• How does a person on the ground (Whilst touching a live electric wire) complete the circuit with the grounded neutral wire? Shouldn't the earth act as an insulator and not allow the electrons to flow from you to the neutral wire?
• How do internet cables and telephone poles transmit so much data all at once?
• How are a non-planetary nebulas created?
• How did differing chromosome numbers evolve?
• The Wikipedia page on Cosmic Rays says, "Studies by IBM in the 1990s suggest that computers typically experience about one cosmic-ray-induced error per 256 megabytes of RAM per month," What were these studies and how did they test this?
• How do the graphics on the super bowl field work?

AskScience Panel of Scientists XVIII Posted: 05 Feb 2018 04:54 AM PST Please read this entire post carefully and format your application appropriately. This post is for new panelist recruitment! The previous one is here. The panel is an informal group of redditors who are either professional scientists or those in training to become so. All panelists have at least a graduate-level familiarity within their declared field of expertise and answer questions from related areas of study. A panelist's expertise is summarized in a color-coded AskScience flair. Membership in the panel comes with access to a panelist subreddit. It is a place for panelists to interact with each other, voice concerns to the moderators, and where the moderators make announcements to the whole panel. It's a good place to network with people who share your interests! You are eligible to join the panel if you: Are studying for at least an MSc. or equivalent degree in the sciences, AND, Are able to communicate your knowledge of your field at a level accessible to various audiences. Instructions for formatting your panelist application: Choose exactly one general field from the side-bar (Physics, Engineering, Social Sciences, etc.). State your specific field in one word or phrase (Neuropathology, Quantum Chemistry, etc.) Succinctly describe your particular area of research in a few words (carbon nanotube dielectric properties, myelin sheath degradation in Parkinsons patients, etc.) Give us a brief synopsis of your education: are you a research scientist for three decades, or a first-year Ph.D. student? Provide links to comments you've made in AskScience which you feel are indicative of your scholarship. Applications will not be approved without several comments made in /r/AskScience itself. Ideally, these comments should clearly indicate your fluency in the fundamentals of your discipline as well as your expertise. We favor comments that contain citations so we can assess its correctness without specific domain knowledge. Here's an example application: Username: /u/foretopsail General field: Anthropology Specific field: Maritime Archaeology Particular areas of research include historical archaeology, archaeometry, and ship construction. Education: MA in archaeology, researcher for several years. Comments: 1, 2, 3, 4. Please do not give us personally identifiable information and please follow the template. We're not going to do real-life background checks - we're just asking for reddit's best behavior. However, several moderators are tasked with monitoring panelist activity, and your credentials will be checked against the academic content of your posts on a continuing basis. You can submit your application by replying to this post. submitted by /u/AskScienceModerator [link] [comments]

How effective are the black bars football players put under their eyes? Posted: 04 Feb 2018 03:24 PM PST I understand it helps with the light, the glare and the reflection from the lightspots, I was just wondering if someone had answers concerning the usefulness of the black lines football players put under their eyes. submitted by /u/QcLoCo [link] [comments]

When humans started launching satellites into space, did they end up discovering previously unknown islands? Posted: 04 Feb 2018 11:07 PM PST submitted by /u/heretodaygonetmrw [link] [comments]

What is more environmentally friendly to drink soda, a aluminum can or a plastic bottle? Posted: 04 Feb 2018 01:53 PM PST submitted by /u/Moonkeyman120 [link] [comments]

Do various primates recognize humans as being primates as well? Posted: 04 Feb 2018 06:14 PM PST submitted by /u/VendettatheGreat [link] [comments]

Would an ion-powered probe be able to get off a small asteroid? Posted: 05 Feb 2018 05:02 AM PST Who would win, an ion engine or a dinky little asteroid like this one? submitted by /u/Fireheart318s_Reddit [link] [comments]

If gravity is the weakest of the fundamental forces, why aren't celestial bodies movement, especially those with magnetic properties, governed by electromagnetism rather than gravity? Posted: 05 Feb 2018 03:31 AM PST submitted by /u/Chasen101 [link] [comments]

How do whales, the largest mammals on earth that inhabit the water, end up beached? Posted: 05 Feb 2018 05:59 AM PST I had posted this on r/explainlikeimfive and one user told me to post over here like the title says. Someone had suggested that they just end up swimming too close to shore and get pulled in by the current or that it could also be due to ongoing marine studies, such as the use of sonar, dredging, etc.What are some of the current theories/studies trying to prove as to why this happens? submitted by /u/da_lizardking [link] [comments]

Why does Kosovo have so many more people than Montenegro? Posted: 05 Feb 2018 01:29 AM PST When you look at Kosovo and Montenegro on a map, they seem really similar in size (Montenegro is actually a bit larger, at 14,000 km2 to Kosovo's 11,000 km2). Yet Kosovo has about three times as many people (1.8 million compared to 600,000). Kosovo is almost as populous as neighbouring Macedonia, which is much larger in size. Furthermore, while both countries are mountainous, Montenegro has access to the sea (which is advantageous) whereas Kosovo is landlocked and appears to have fewer resources and fewer reasons to settle there. So, why do such similar neighbouring countries have radically different population? submitted by /u/pavass [link] [comments]

How are expiration dates assigned to medicine? Posted: 05 Feb 2018 05:15 AM PST Most times the components in medicine (either pills or syrups) are chemicals. What do you take into account to set an expiration date? submitted by /u/jujulita_moi [link] [comments]

How does emergency contraception (morning after pill) containing levonorgestrel work? Pre-fertilization or post-fertilization MOA? Posted: 04 Feb 2018 09:28 PM PST I just saw this in an AskReddit thread where someone said that the morning after pill works to prevent ovulation and fertilization. This caught me a little off guard, so I wanted to ask about this here! I'm not in the US - I'm in South America. Although I eventually dropped out, I did go to med school for three years, and I distinctly remember my pharmacology professor and later an OBGYN preceptor during my first clinical clerkship saying that levonorgestrel has a higher chance of taking a post-fertilization MOA. I believe there was some study that pointed to that as well - scientists from Spain, I think? I'm trying to find something in English rather than Portuguese and the first thing I came across was this: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5102184/ For reference, emergency contraception is available without a prescription here in Brazil. Someone in class asked if it induces a miscarriage/acts as an abortive medication, and the professor started going in detail about how technically, there is a chance that the drug works to prevent a pregnancy that's already started (very early stage, though...). IIRC, the explanation given is that this particular EC "tricks" the body - it rapidly increases the progestogen levels that the body normally builds up after ovulation. This causes the endometrium lining of the uterus to thicken and then as the progestogen levels start to decline, the person who took the EC gets their period. They did say that the pre or post fertilization MOA depends on what stage of the menstrual cycle the woman taking it is in. It's funny that most of the web searches in Portuguese do mention the post-fertilization MOA. Now, when I searched for this in English, most information available (not in official research, more like Your Reproductive System 101) emphasized that this drug prevents ovulation and that it absolutely did not work the same as abortion pills. So...that got me curious, and I wanted to know what's the cause of this divergence in information. Thanks! submitted by /u/TallisTate [link] [comments]

What was the earliest known relationship between early humans and wolves/dogs, and what did they both stand to gain from the relationship? Posted: 04 Feb 2018 01:00 PM PST submitted by /u/refrainiac [link] [comments]

In a perfectly conductive wire, does information travel at the speed of light? Posted: 04 Feb 2018 10:25 PM PST Like when you press a button like a mouse click, would the information of the click travel to the computer chip at the speed of light, if the wire was perfectly conductive? Couldn't find a good answer online. Thanks. submitted by /u/SoccorMom911 [link] [comments]

What substances polluted the Earth in the 17th and 18th Century? Posted: 04 Feb 2018 09:44 PM PST Okay, so in the 20th and 21st century, there are a TON of substances that pollute the Earth, CFC, Carbon Monoxide and things like automobiles and industries and what not. What were the atmosphere degrading substances back when the world was not as advanced as it is now ? submitted by /u/vibhav_1 [link] [comments]

The hazard symbols for highly flammable and oxydizing are very similar. Why is the oxydizing symbol so similar and what does it visually represent? Posted: 04 Feb 2018 01:14 PM PST I am very sorry for such a boring question, but I'm struggling to find why the Oxydizing symbol is the way it is. I need to explain what is happening in the image so I can seperate it from the Highly Flammable symbol. submitted by /u/anyonamous [link] [comments]

What are you actually feeling when you feel like you have to pee? Posted: 04 Feb 2018 08:21 AM PST submitted by /u/levalex [link] [comments]

Is it possible to use a planets magnetic field as a particle accelerator? Posted: 04 Feb 2018 09:28 PM PST submitted by /u/haladur [link] [comments]

Why do rotating black holes look so weird? Posted: 04 Feb 2018 01:28 PM PST So I found this website from ESA where you can play around with a black hole and the rotating black hole (Kerr black hole) looks so weird. Why does it have that shape? submitted by /u/YottaEngineer [link] [comments]

How does a person on the ground (Whilst touching a live electric wire) complete the circuit with the grounded neutral wire? Shouldn't the earth act as an insulator and not allow the electrons to flow from you to the neutral wire? Posted: 04 Feb 2018 02:25 PM PST Thanks in advance. submitted by /u/StatHoop88 [link] [comments]

How do internet cables and telephone poles transmit so much data all at once? Posted: 04 Feb 2018 08:07 PM PST I know that they send data in bits of electric pulses but I don't understand how they can transmit so many calls at once or how they can show so many people different sites at once without it being too much. I can't imagine people putting a whole new wire in just because you want an extra Ethernet connection or an extra phone line. submitted by /u/luwachamo [link] [comments]

How are a non-planetary nebulas created? Posted: 04 Feb 2018 03:05 PM PST submitted by /u/Sgwyd_ [link] [comments]

How did differing chromosome numbers evolve? Posted: 04 Feb 2018 07:27 AM PST How could different chromosome numbers evolve in a species without an organism with a different chromosome count just dying because of that "mutation". submitted by /u/ManapatTheBoss [link] [comments]

The Wikipedia page on Cosmic Rays says, "Studies by IBM in the 1990s suggest that computers typically experience about one cosmic-ray-induced error per 256 megabytes of RAM per month," What were these studies and how did they test this? Posted: 04 Feb 2018 09:28 PM PST I'm asking because the Wikipedia source links to a 2008 Scientific American article that simply states the same fact with no other source to back it up. All searches for this study lead me in circles back to the same article. submitted by /u/liamemsa [link] [comments]

How do the graphics on the super bowl field work? Posted: 04 Feb 2018 03:03 PM PST How are images and text displayed? Is the field like a giant green screen? submitted by /u/iEatSponge [link] [comments]

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