How did the physiology of the horse change once we started riding them?

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• How did the physiology of the horse change once we started riding them?
• [Zoology] I recently learned that giraffes don't have the ability to cough. How do they survive when they get a bolus or some water stuck in their esophagus?
• If you asked me if I had read a particular book, I could tell you instantly. However, if you asked me to list all the books I'd read, I'd not be able to recall them all - why is this?
• How do we precisely know how much gravitational force an object like a planet or a moon exerts on a satellite that is using it for a gravitational boost?
• What factors cause/increase the chance of rain?
• How do you accurately calculate an azimuth between faraway countries?
• Are atoms with a high electron count more likely to form bonds with other atoms because their valence electrons are far away from the nucleus?
• Do our ears adjust when listening to very quiet sounds?
• Is psychopathy considered a binary diagnosis or is it seen as a spectrum?
• After a critical point, in language acquisition, babies can no longer acquire new phonemes. Is it possible for a baby to acquire phonemes in a language, and use these skills to be able to pronounce phonemes in other languages as they get older?
• How does the human metabolism change in response to morbid obesity?
• Were there changing seasons at all during the ice age, or was it like a long, harsh monotonous winter?
• What is the purpose of homosexual interaction between animals?
• What kind of soil and atmosphere analysis do Mars rovers do to test for extinct and extant life?
• What is the difference between Tinea Versicolour & Pityraisis Versicolour?
• In theory, have no two events ever occurred at the exact same time (because time can be broken down into infinitely smaller units)?
• Why do you taste things much sweeter as an adult than as a child?
• How large is Earths temperate orbital butterzone?
• When your body gets used to cold water, does it perceive it as a warmer temperature or does it just become less sensitive to the cold?
• A UFC fighter was recently revealed to have trace amounts of a steroid in his system. Authorities in the UFC and USADA said that they’re from the last time he got busted and a redditor attempted to debunk this theory, could someone have trace amounts of Turinabol 18 months after use?
• How does a microwave melt butter?
• Why do atoms not seem to bond in a "closed circuit" type structure?
• How does speed affect time in our galaxy that is flying through space and spinning around a SMBH?
• Does your current level of health and fitness dictate the genes passed on to your kids? Like can I get really fit and then have a baby to pass on those traits, or similarly if I got really fat and then had a baby would it be more likely to inherit those unhealthy traits? Or is it all predetermined?

How did the physiology of the horse change once we started riding them? Posted: 23 Dec 2018 07:46 AM PST submitted by /u/Got_ist_tots [link] [comments]

[Zoology] I recently learned that giraffes don't have the ability to cough. How do they survive when they get a bolus or some water stuck in their esophagus? Posted: 23 Dec 2018 09:26 PM PST Apparently it is due to their long neck, which seems to be an evolutionary glitch to me. I would assume they are in even more danger of restriction to their windpipes. Thanks in advance! submitted by /u/FlammableFishy [link] [comments]

If you asked me if I had read a particular book, I could tell you instantly. However, if you asked me to list all the books I'd read, I'd not be able to recall them all - why is this? Posted: 23 Dec 2018 05:06 AM PST submitted by /u/Fiennes [link] [comments]

How do we precisely know how much gravitational force an object like a planet or a moon exerts on a satellite that is using it for a gravitational boost? Posted: 24 Dec 2018 02:44 AM PST How do we actually know how much mass a planet or moon has? Wouldnt its make up be kind of a complete ball park, therefore its mass be just a guess? Therefore its gravitational force be sort of a ballpark? But then how can we use it precisely? submitted by /u/MyNameIsGladiat0r [link] [comments]

What factors cause/increase the chance of rain? Posted: 24 Dec 2018 04:34 AM PST I am a student studying software and im playing around with a simple machine learning library. I want to create a small program that can predict if it is raining or not by looking at a list of numerical attributes that may suggest rainfall. Im dont have much knowledge of meteorology, what atmospherical attributes am i looking for? (things such as high humidity % or high pressure) ​ thanks submitted by /u/tom2kk [link] [comments]

How do you accurately calculate an azimuth between faraway countries? Posted: 24 Dec 2018 02:43 AM PST Hi, reddit! I am a travelling Network engineer about to travel to Poznan, Poland for work. Before leaving I wanted to give my son a compass because I thought it would be cool for him to be able to tell which direction I was. I started to do the math to calculate the azimuth between my (aprox) home and my (aprox) work location but I ran into some unexpected problems. I used online tools to help calculate, but all of them give impossible answers when I run the numbers. EX. lat,lon: 16.9, 52.4 (Poznan, Poland) and -81.2, 33.9 (Columbia, South Carolina) if I run the numbers with a standard azimuth calculator like: https://keisan.casio.com/exec/system/1317262499 then the answer I get is somewhere around 298 degrees in the northwest! I would expect some small margin of error, but results like this seem nonsensical. Can someone with more experience in this area help me find where I am going wrong? submitted by /u/alexanderj1991 [link] [comments]

Are atoms with a high electron count more likely to form bonds with other atoms because their valence electrons are far away from the nucleus? Posted: 24 Dec 2018 06:38 AM PST submitted by /u/Aidanmartin3 [link] [comments]

Do our ears adjust when listening to very quiet sounds? Posted: 24 Dec 2018 06:36 AM PST More specifically, is there a change that happens to our ears akin to pupils dilating in low light in order for quieter sounds (or sounds of different frequencies) to be picked up? submitted by /u/AdamxKH [link] [comments]

Is psychopathy considered a binary diagnosis or is it seen as a spectrum? Posted: 24 Dec 2018 07:36 AM PST Basically, could a person who displays a lack of empathy for the most part but displays genuine empathy in certain situations be accurately diagnosed as a psychopath? submitted by /u/Flumper [link] [comments]

After a critical point, in language acquisition, babies can no longer acquire new phonemes. Is it possible for a baby to acquire phonemes in a language, and use these skills to be able to pronounce phonemes in other languages as they get older? Posted: 24 Dec 2018 07:28 AM PST For example, if a baby were to learn a language (lets call it gibberish#1) that has every phoneme+more of another language (gibberish#2) could that baby learn gibberish#2 and speak it without an accent, having acquired all the required phonemes for gibberish#2 when they learned gibberish#1? submitted by /u/TheMetaphorer [link] [comments]

How does the human metabolism change in response to morbid obesity? Posted: 23 Dec 2018 05:35 PM PST Are these changes permanent? submitted by /u/MMMojoBop [link] [comments]

Were there changing seasons at all during the ice age, or was it like a long, harsh monotonous winter? Posted: 24 Dec 2018 02:54 AM PST submitted by /u/CoolKouhai [link] [comments]

What is the purpose of homosexual interaction between animals? Posted: 24 Dec 2018 05:13 AM PST I recently learned that about 90% of sexual interactions between giraffes happen between males. This surprised me, since I'd always assumed that homosexuality was a... genetic mutation that got passed down sparingly over time and was only ever present in a minority of a species? (not really sure about any of this tbh) Yet, giraffes and I assume some other animals seem to disprove this idea. Does this mean that homosexuality is actually useful in some way and (in some species) gets passed down a lot despite its nature? Are the animals in species that are prone to homosexual behaviour truly homosexual or rather just bisexual or something else entirely? Can the sexual interaction that happens between animals of the same sex be equated to the one with breeding purposes or is it rather a social interaction with some other type of purpose? submitted by /u/SlimyFrog7 [link] [comments]

What kind of soil and atmosphere analysis do Mars rovers do to test for extinct and extant life? Posted: 24 Dec 2018 05:00 AM PST What automated tests take place on these rovers to search for extinct and extant life? ​ submitted by /u/_avp_ [link] [comments]

What is the difference between Tinea Versicolour & Pityraisis Versicolour? Posted: 24 Dec 2018 04:41 AM PST submitted by /u/obviousthrowaway6200 [link] [comments]

In theory, have no two events ever occurred at the exact same time (because time can be broken down into infinitely smaller units)? Posted: 23 Dec 2018 05:16 PM PST submitted by /u/Probably-Sarcasm [link] [comments]

Why do you taste things much sweeter as an adult than as a child? Posted: 23 Dec 2018 10:34 PM PST Why when someone eats a sweet thing from their childhood, it does taste much sweeter than what you recall as a kid? submitted by /u/angry_pinata73 [link] [comments]

How large is Earths temperate orbital butterzone? Posted: 24 Dec 2018 03:08 AM PST So, life on this planet is somewhat delicate. We are placed at the exact spot around a star the exact size necessary to support life on this planet and seemingly this planet alone. How large is the butterzone of this exact orbit? Would we have to move hundreds of thousands of miles in or out just to change 1 degree or is it one of those "3 asteroid strikes and you are out of bounds" kinda things? submitted by /u/TheStreetForce [link] [comments]

When your body gets used to cold water, does it perceive it as a warmer temperature or does it just become less sensitive to the cold? Posted: 24 Dec 2018 03:03 AM PST submitted by /u/nexttonormal_ [link] [comments]

A UFC fighter was recently revealed to have trace amounts of a steroid in his system. Authorities in the UFC and USADA said that they’re from the last time he got busted and a redditor attempted to debunk this theory, could someone have trace amounts of Turinabol 18 months after use? Posted: 24 Dec 2018 03:00 AM PST Here's a link to the comment: https://www.reddit.com/r/MMA/comments/a92vn2/comment/ecg16db?st=JQ27JQHR&sh=ebbfff1c submitted by /u/HouseNegroe [link] [comments]

How does a microwave melt butter? Posted: 23 Dec 2018 11:01 PM PST Everything I've ever seen says that microwaves work by spinning water molecules, taking advantage of the fact that they're polar. If I put a stick of butter in a bowl and microwave it, it will melt, but butter is not polar as far as I know. So how does the microwave heat it? submitted by /u/NastyDad [link] [comments]

Why do atoms not seem to bond in a "closed circuit" type structure? Posted: 23 Dec 2018 02:23 PM PST Not sure if I'm wording that right. Just recently started reading online about physics and chemistry. I have lot of questions but one that I asked in highschool and never got a satisfying answer from my teacher was why o3 (ozone) doesnt make a triangle like bond within itself and has a single bond double bond thing going on. Like o=o-o rather than 3 single bonds in which all the atoms share a bond with each other. Please help. submitted by /u/myhamsareburnin [link] [comments]

How does speed affect time in our galaxy that is flying through space and spinning around a SMBH? Posted: 23 Dec 2018 09:44 PM PST From my understanding the faster you travel the slow time "tics" for you. Does that mean that time depends on how fast your host galaxy is traveling through the universe? submitted by /u/MyNameIsDrewp [link] [comments]

Does your current level of health and fitness dictate the genes passed on to your kids? Like can I get really fit and then have a baby to pass on those traits, or similarly if I got really fat and then had a baby would it be more likely to inherit those unhealthy traits? Or is it all predetermined? Posted: 23 Dec 2018 03:37 PM PST submitted by /u/TomakaTom [link] [comments]

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How do some air-freshening sprays "capture and eliminate" or "neutralize" odor molecules? Is this claim based in anything?

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• How do some air-freshening sprays "capture and eliminate" or "neutralize" odor molecules? Is this claim based in anything?
• If a males testicles are removed before puberty occurs does the male grow to be the size they would have been if the testicles were still there?
• What is physically happening in the brain when we forget something?
• How are the voices of objects such as GPS systems or Alexa created? Do the programs use voice samples to create sentences in real-time, or is everything pre-recorded?
• How does herpes work? Why cant it be cured and how does it appear in specific locations on the human body?
• Is real space and reciprocal space in condensed matter a covariant and contravariant basis respectively?
• How does this "watercoloring" kid's book work?
• What is the Hercules-Corona Borealis Great Wall?
• How is yield on atomic and hydrogen bomb explosions meassured?
• What makes a programming language "good" for certain tasks?
• Why do MRI scans take a moderate amount of time to complete, while fMRI scans are able to function in near-continuous manner (i.e. on an order of seconds instead of hours)?
• What temperature is the surface of a puddle?
• How do snail’s shells stay on?
• How do humpback whales separate all thier food from the thousands of gallons of water it comes with?
• Is it possible to have two planets orbiting one star, but they orbit on opposite sides of said star?
• How did NASA first dealt with radiation in space ?
• Could "active light cancelling" exist?
• Besides opposable thumbs, what other steps in evolution led to humans?
• What is the evolutionary advantage of the tibula and fibula being separate and not one combined bone?
• Are there any sub/species that feed solely through cannibalism? If not, is such a thing theoretically possible?
• Why do you lose consciousness when you get hit by something? And what exactly happens when trying to recover from it and how do you wake up? Is it like waking up when you are done sleeping?

How do some air-freshening sprays "capture and eliminate" or "neutralize" odor molecules? Is this claim based in anything? Posted: 22 Dec 2018 05:17 PM PST submitted by /u/Cocksuckin [link] [comments]

If a males testicles are removed before puberty occurs does the male grow to be the size they would have been if the testicles were still there? Posted: 22 Dec 2018 05:00 PM PST To add to my question, would the removal of the testicles before puberty cause the person to be uninterested in sex after they would have otherwise gone through puberty? submitted by /u/ODE4555 [link] [comments]

What is physically happening in the brain when we forget something? Posted: 22 Dec 2018 05:54 PM PST submitted by /u/LavinaPosts [link] [comments]

How are the voices of objects such as GPS systems or Alexa created? Do the programs use voice samples to create sentences in real-time, or is everything pre-recorded? Posted: 23 Dec 2018 02:25 AM PST submitted by /u/Ioei1031 [link] [comments]

How does herpes work? Why cant it be cured and how does it appear in specific locations on the human body? Posted: 22 Dec 2018 04:03 PM PST I know there are two major types of herpes virus but how is it possible that they appear in specific loactions? Why cant we get some type in some places? Finally, how is this virus incurable? submitted by /u/himaximusscumlordus [link] [comments]

Is real space and reciprocal space in condensed matter a covariant and contravariant basis respectively? Posted: 23 Dec 2018 04:48 AM PST I'm very familiar with the condensed matter principles but I'm self studying tensor Calculus over Christmas. It seems like they are very similar concepts, they obey almost the same othorgonality, and the unit vectors transform slightly differently. In one, by a mix of dot and cross products and in the other by a metric tensor. With these differences in mind, can these concepts be considered equivalent? Perhaps one is a generalization of the other? Lastly, in condensed we transform functions into the reciprocal space via the Fourier transform, is this a general relationship between functions in covariant and contravariant spaces? submitted by /u/digitalmus [link] [comments]

How does this "watercoloring" kid's book work? Posted: 22 Dec 2018 11:19 PM PST My Friend's Kid has this coloring book, how does this work? For those of you who've never see this before it's a coloring book that's blank. When you add water, the colors appear. Once it dries the colors fade and you're left with a white page again. I'm really curious about the science behind this, what's happening here? submitted by /u/phizrine [link] [comments]

What is the Hercules-Corona Borealis Great Wall? Posted: 23 Dec 2018 12:01 AM PST I have heard this mentioned as the largest structure in the universe at ten billion light years across. What is it, why is it classified as a single structure, what is it made of and how does it exist? submitted by /u/Miloisprettycool [link] [comments]

How is yield on atomic and hydrogen bomb explosions meassured? Posted: 23 Dec 2018 04:13 AM PST I mean physically? What kind of device or contraption is actually used? Wouldnt the explosion just vaporize any meassureing device? submitted by /u/overlydelicioustea [link] [comments]

What makes a programming language "good" for certain tasks? Posted: 22 Dec 2018 06:39 PM PST For example, I've heard that Python is a "good" language for data analysis, and C# is for building apps. Theoretically, all programming languages should be able to do the same things, so what makes one better for a certain task? Is it the standard libraries? submitted by /u/graphicviolins01 [link] [comments]

Why do MRI scans take a moderate amount of time to complete, while fMRI scans are able to function in near-continuous manner (i.e. on an order of seconds instead of hours)? Posted: 22 Dec 2018 07:57 PM PST submitted by /u/RubiksMike [link] [comments]

What temperature is the surface of a puddle? Posted: 23 Dec 2018 05:54 AM PST The other day my friend said the surface a puddle was at 100 degrees. I explained the difference between evaporation and boiling. Then they replied with this 'Some of the water will evaporate and you could work out how much energy that transfers and link that to a temperature, which would be surprisingly high. KE =3/2kT.' Isn't that just the average Ke? If that equation was applied to one or two particles at the surface. What would the temp actually be? Can this equation actually be applied. I have confused myself. Any help appreciated. submitted by /u/RJ5xx [link] [comments]

How do snail’s shells stay on? Posted: 22 Dec 2018 03:45 PM PST submitted by /u/Rlee3687 [link] [comments]

How do humpback whales separate all thier food from the thousands of gallons of water it comes with? Posted: 22 Dec 2018 06:07 PM PST submitted by /u/Ploot-O [link] [comments]

Is it possible to have two planets orbiting one star, but they orbit on opposite sides of said star? Posted: 22 Dec 2018 10:09 AM PST I know its been asked before, but I have specific questions I didn't see asked. The details of this scenario: A Sol-like star (age, size, composition, etc.) with two planets in the exact same orbit, and inclination. I understand the mathematic improbability of this, and that this is, if it existed or exists, a most unlikely natural occurrence. But I just want to know, even if by unnatural means, this would be a stable system, or if they would be slowly torn up by gravitational effects between the three bodies? I am rather ignorant to most of physics so barney-style this (simplify) as much as you can please! submitted by /u/xKINGxJOLTEONx [link] [comments]

How did NASA first dealt with radiation in space ? Posted: 22 Dec 2018 04:22 PM PST Specifically with the computers. How could they function when first going to the moon? submitted by /u/A_Tricky_one [link] [comments]

Could "active light cancelling" exist? Posted: 22 Dec 2018 07:25 PM PST As of today, we have developed efficient active noise cancelling technology that we can find in popular headphones. Could the same idea apply to light, even if we are talking about EM waves and not mechanical waves? submitted by /u/Thmsrey [link] [comments]

Besides opposable thumbs, what other steps in evolution led to humans? Posted: 22 Dec 2018 03:16 PM PST I grew up taught that giraffes probably started as regular necked animals like horses, but the food was too high so "they evolved to have longer necks". I now understand that life doesn't evolve intentionally. Mutations occur which the life form must use to survive, or die. Giraffes who just happened to be born with sightly longer necks could better reach the food, so they survived and bred, and over enough generations the longer necked ones continued to be better able to survive so the longer the neck, the better the chance to survive and breed. Opposable thumbs gave us the ability to manipulate small objects and the smarter of us figured out how to make tools... From my limited understanding of human evolution, the fabrication of tools was one of the major steps in human evolution. What other events/achievements were possible only for humans, due to an early mutation? Thanks! submitted by /u/infinitum3d [link] [comments]

What is the evolutionary advantage of the tibula and fibula being separate and not one combined bone? Posted: 22 Dec 2018 12:21 PM PST submitted by /u/apivan191 [link] [comments]

Are there any sub/species that feed solely through cannibalism? If not, is such a thing theoretically possible? Posted: 22 Dec 2018 04:14 PM PST submitted by /u/killtheraven [link] [comments]

Why do you lose consciousness when you get hit by something? And what exactly happens when trying to recover from it and how do you wake up? Is it like waking up when you are done sleeping? Posted: 22 Dec 2018 12:24 PM PST Title explains. Is there a specific process that affects the nervous system to be knocked out and what exactly does it do when trying to wake up? submitted by /u/Edgardus [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

Are there any differences between they way earlier species of humans experienced pregnancy and birth and the way we experience it now?

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• Are there any differences between they way earlier species of humans experienced pregnancy and birth and the way we experience it now?
• Can we repair damaged brain parts/tissues? Other organs have proved to be successful but how about the ever-complicated brain?
• What happens to aquatic life when a lake freezes over? Do the animals and plants somehow hibernate, or do they find a way to live under to ice? Where would they get oxygen?
• Is the large intestine itself the cause of foul odor or is it the food and gut bacteria combination?
• Can anything be temporarily magnetized in the presence of a strong enough magnetic field?
• If by depressurising we can go from solid to liquid to gas. How about from gas going to plasma?
• How do scientists measure things like size, weight or the age of planets?
• What causes the Koch snowflake to have a infinite perimeter?
• Why do some planes have more propellor props/arms than others? Does it have to do with cruising speed?
• Does the size of a brain directly affect intelligence?
• Why do we experience this “call of the void” in front of a big drop?
• What are the differences between male and female eyesight?
• Is there anything notable about the other focus of an orbital ellipse?
• How do cars accurately measure the temperature while ignoring wind chill?
• At the end of the Permian era, we see a greenhouse gas effect situation happen because of a volcanic eruption and bacteria... how did the planet recover from this?
• Do our pheromones change as we age?
• Why doesn't the Earth's elliptical orbit affect its temperature (Cause Seasons)?

Are there any differences between they way earlier species of humans experienced pregnancy and birth and the way we experience it now? Posted: 21 Dec 2018 10:23 PM PST Things like gestation periods, how the body reacts to pregnancies, the way the pregnancy itself progresses - is there anything that has changed over time, even perhaps between now and a couple centuries ago? submitted by /u/couldulikenotbro [link] [comments]

Can we repair damaged brain parts/tissues? Other organs have proved to be successful but how about the ever-complicated brain? Posted: 21 Dec 2018 10:42 PM PST submitted by /u/parfaitdream [link] [comments]

What happens to aquatic life when a lake freezes over? Do the animals and plants somehow hibernate, or do they find a way to live under to ice? Where would they get oxygen? Posted: 21 Dec 2018 07:32 PM PST submitted by /u/Spontaneous-Onion [link] [comments]

Is the large intestine itself the cause of foul odor or is it the food and gut bacteria combination? Posted: 21 Dec 2018 05:25 PM PST So I've been reading about women who were born without a vaginal cavity, or transgender woman who get srs, doctors using the sigmoid colon as the vaginal cavity and I have a question. So there seems to be this hearsay that this vaginal cavity would produce a bad odor. But phsyiologically and biologically speaking, is this even possible? Is the intestine itself the cause of bad odor when we deficate or is it the food mixed with gut bacteria that causes the bad smell? And wouldn't this smell not be possible if a part of the intestine was used to line a vaginal cavity? submitted by /u/KandiceKame [link] [comments]

Can anything be temporarily magnetized in the presence of a strong enough magnetic field? Posted: 22 Dec 2018 12:12 AM PST I know that only ferromagnets can stay magnetized after the magnetic field is removed, but as for objects being temporarily magnetized, I was not able to find any definitive answers through google. I also checked on this sub, and found a few questions that were related, but the answers seemed a bit inconclusive so I figured I would ask again. submitted by /u/Supernova141 [link] [comments]

If by depressurising we can go from solid to liquid to gas. How about from gas going to plasma? Posted: 22 Dec 2018 04:10 AM PST I'm wondering if by applying pressure we can go from gas to liquid. How about depressurizing gas into plasma? I've learned this thing called PAW(plasma activated water) from TUe. They use electricity. But the effects treated water on e.g. growing plants or keeping vaas flowers better, is similar to what I've seen with water treated by a simple passive device where tapwater is pushed through the hole of what has the shape of an hourglass, but after the pressure increase it comes out and depressurized instantly. Hence my question; could both methods of treating water, actually be based on the same idea; creation of plasma. submitted by /u/houtm035 [link] [comments]

How do scientists measure things like size, weight or the age of planets? Posted: 21 Dec 2018 01:16 PM PST submitted by /u/s0angelic [link] [comments]

What causes the Koch snowflake to have a infinite perimeter? Posted: 21 Dec 2018 11:17 PM PST Why Can't you just create a circuit in the shape of the Koch snowflake and measure light from point A to point B? A and B represent 1 interval around the Koch snowflake. If it doesn't take infinite time to get from A to B would that prove the perimeter is finite? I know almost next to nothing about a circuit. So take that into consideration when answering the question. submitted by /u/earlnw [link] [comments]

Why do some planes have more propellor props/arms than others? Does it have to do with cruising speed? Posted: 21 Dec 2018 05:08 PM PST submitted by /u/Coffepot7 [link] [comments]

Does the size of a brain directly affect intelligence? Posted: 21 Dec 2018 08:16 PM PST Many neuroscientists seem to agree that the main determining factor of intelligence lies in the molecular activity at the synapses, but I've also read that the part of Einstein's brain that dealt with logic and reasoning was physically larger than the average person's which may have contributed to his superior intelligence. Both sides of the argument bring valid points and I'm not sure which to believe. submitted by /u/Duke_Demise [link] [comments]

Why do we experience this “call of the void” in front of a big drop? Posted: 21 Dec 2018 01:55 PM PST submitted by /u/WilliamGallon [link] [comments]

What are the differences between male and female eyesight? Posted: 21 Dec 2018 05:05 PM PST There was a conversation on the way home from work tonight, VR was brought up and that it can cause a form of "travel sickness". I remember hearing that during testing more females responded to this sickness than males. I also recall hearing somewhere about the differences in eyesight for men and woman and it went something like this: male's have better depth perception and females have better periphery vision. I've never been able to find studies suggesting this but I have come a study mentioning that the different sexes view colour differently. ​ Could someone explain to me what the modern scientific position is on the differences in male and female eyesight. Thanks and Merry Christmas all submitted by /u/CriticalBeatdown [link] [comments]

Is there anything notable about the other focus of an orbital ellipse? Posted: 21 Dec 2018 08:20 PM PST Kepler's laws of planetary motion says that planets orbit the sun in an ellipse with one of the foci being then sun. Is there anything of note at the other focus though? submitted by /u/sacrelicious2 [link] [comments]

How do cars accurately measure the temperature while ignoring wind chill? Posted: 21 Dec 2018 12:33 PM PST It seems like it would be difficult to get an accurate measurement if the car moves at fast speeds, hence creating wind and introducing a wind chill effect. submitted by /u/burritomobile [link] [comments]

At the end of the Permian era, we see a greenhouse gas effect situation happen because of a volcanic eruption and bacteria... how did the planet recover from this? Posted: 21 Dec 2018 12:09 PM PST When speaking about the current situation with global warming I often hear warnings about how a positive feedback loop of planetary warming could lead to a situation like the greenhouse gas effect on Venus. However, vast amounts of CO2 and methane have been released into the atmosphere previously in the earth's history (and though it was cataclysmic) it seems that the earth recovered and did not continue to warm. What happened before to stabilize the climate? Is it likely to happen again in the future? submitted by /u/satansbride13 [link] [comments]

Do our pheromones change as we age? Posted: 21 Dec 2018 01:12 PM PST If we had very good chemistry/attraction with someone in high school, if you don't see them for 30 years, will that spark still be as strong, or will our pheromones have changed so that won't be the same? submitted by /u/fsutrill [link] [comments]

Why doesn't the Earth's elliptical orbit affect its temperature (Cause Seasons)? Posted: 21 Dec 2018 08:35 AM PST I keep hearing that the Earth's tilt is responsible for seasons and that the angle of incidence of the sun's rays are the main player. But, the tilt cause a change of distance of around 5000km whilst Earth's orbit can cause a change of 5000000km. I don't get how this doesn't play a role in seasons change. I know the the heat is spread along a big surface area when the angle of incidence increases, but I fail to comprehend how this has a much larger effect than 5 MILLION km change in distance. Does this have to do with how the heat is transferred? (ie. Radiation) submitted by /u/ekhaled1836 [link] [comments]

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