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"The human population is at 7.7 billion. Has any other mammal ever reached that population level?"
askscience
"How many mouse clicks would it take to put the space shuttle into orbit?"
askscience
"In a desert, what is under all of the sand?"
askscience
"Would bee hives grow larger if we didn't harvest their honey?"
askscience
"Does the earth "lose/gain" water or is it truly a closed system?"
askscience
"Is it possible for animals to be allergic to humans?"
askscience
"Do galaxies have clearly defined borders, or do they just kind of bleed into each other?"
askscience
"Do other monogamous animals ever "fall out of love" and separate like humans do?"
askscience
"Does the temperature of water affect its ability to put out a fire?"
askscience
"Why do "campfire smells" (or other wood-burning smells) seem to stick to clothing/skin longer than other smells?"
askscience
"Around 9% of Coronavirus tests came positive on July 9th. Is it reasonable to assume that much more than ~1% of the US general population have had the virus?"
askscience
"If humans have evolved to have hair on their head, then why do we get bald? And why does this occur mostly to men, and don't we lose the rest of our hair over time, such as our eyebrows?"
askscience
"How does a master key work?"
askscience
"I’ve read that when caterpillars are in their cocoons, they dissolve completely into goo; no original parts survive in the butterfly. How is the butterfly made from the goo? Is there an embryo that grows and uses the goo like a yolk sac? Or does the goo somehow arrange itself into new body parts?"
askscience
"How can a vessel contain 100M degrees celsius?"
askscience
"Was the 1918 pandemic virus more deadly than Corona? Or do we just have better technology now to keep people alive who would have died back then?"
askscience
"Why do we use steel from ships made before 1945 atomic bombings for radiological instruments? Is it just cheaper or are we totally unable to purify steel with today's processes?"
askscience
"What’s that lump in your throat you get when you’re about to cry?"
askscience
"What exactly is happening to your (nerves?) when circulation gets cut off and you start to tingle?"
askscience
"How do psychologists distinguish between a patient who suffers from Body Dysmorphic Disorder and someone who is simply depressed from being unattractive?"
askscience
"Is there a difference between hitting a concrete wall at 100mph and being hit by a concrete wall at 100mph?"
askscience
"India is now experiencing double and triple mutant COVID-19. What are they? Will our vaccines AstraZeneca, Pfizer work against them?"
askscience
"How many lines of code does new PC games take?"
askscience
"Are "pressure points" in the body real or handwavey pseudoscience? If they are real, what do they do and how do they work?"
askscience
"Askscience Megathread: Climate Change"
askscience
"If the great pacific garbage patch WAS compacted together, approximately how big would it be?"
askscience
"The Spanish Flu of 1918 was a strain of H1N1, but how do we know that?"
askscience
"Is there an example of a mathematical problem that is easy to understand, easy to believe in it's truth, yet impossible to prove through our current mathematical axioms?"
askscience
"Do veins grown in the same pattern in every body or is it unique like fingerprints?"
askscience
"Should I trust the spedometer of my car or the speed stated by my GPS? Which one is correct and even more important, which one do the cops use?"
askscience
"If you were to fall down a skyscraper's elevator shaft, would the Coriolis effect cause you to hit the sides?"
askscience
"A tidally locked planet is one that turns to always face its parent star, but what's the term for a planet that doesn't turn at all? (i.e. with a day/night cycle that's equal to exactly one year)"
askscience
"Would animals with non-round pupils (such as cats and goats) see a different shaped image to us, additional to that which is granted by the different eye position?"
askscience
"AskScience AMA Series: We have discovered an Earth-mass exoplanet around the nearest star to our Solar System. AMA!"
askscience
"Do dogs understand pictures of their owners?"
askscience
"Why have CPU clock speeds stopped going up?"
askscience
"When it rains, do flies or other flying bugs dodge raindrops? And if not, is each impact like being hit by a gigantic missile of water?"
askscience
"If you had a completely empty universe, in which only 2 marbles, placed perfectly still in the beginning, with 1 ly distance in between them, how long would it take for them to collide due to gravity?"
askscience
"Is there an altitude on Venus where both temperature and air pressure are habitable for humans, and you could stand in open air with just an oxygen mask?"
askscience
"If an air bubble is accidentally left in a syringe for a vaccine or any other medicine can it kill me? Or is it rare?"
askscience
"What does it feel like walking in areas with high radiation? Does it feel hot or something? Does it smell? Harder to breathe? Or is the only way you will figure it out (w/out a Geiger meter) is when you start to get sick?"
askscience
"How much does a covid-19 vaccine lower the chance of you not spreading the virus to someone else, if at all?"
askscience
"If SARS-Cov-2 is an RNA virus, why does the published genome show thymine, and not uracil?"
askscience
"Megathread: 2017 Hurricane Season"
askscience
"Is it possible to contract COVID 19 a second time?"
askscience
"Why do we experience no sort of gag reflex when we are swallowing food or a drink?"
askscience
"When sign language users are medically confused, have dementia, or have mental illnesses, is sign language communication affected in a similar way speech can be? I’m wondering about things like “word salad” or “clanging”."
askscience
"Can an entomologist please give a further explanation of Asian Giant Hornet situation in Washington state and British Columbia?"
askscience
"If you watch a gif of a coin flipping (without ever seeing it) to make a decision, is it still a 50/50 chance, even though the video already predetermines what side the coin will flip onto?"
askscience
"Do rainbows contain light frequencies that we cannot see? Are there infrared and radio waves on top of red and ultraviolet and x-rays below violet in rainbow?"
askscience
"Did the plague doctor masks actually work?"
askscience
"If somebody loses a lot of blood, how do doctors tell so fast wich blood type the patient has and exactly how much blood was lost/needs to be transfused?"
askscience
"If an astronaut travel in a spaceship near the speed of light for one year. Because of the speed, the time inside the ship has only been one hour. How much cosmic radiation has the astronaut and the ship been bombarded? Is it one year or one hour?"
askscience
"Why does removing a battery and replacing the same battery (in a wireless mouse for example) work?"
askscience
"Reports are coming out that SARS-CoV-2 has been detected in old sewage samples. How many people need to be infected before we can detect viruses in sewage?"
askscience
"For species with very long life spans (everything from Johnathan, the 187-year-old tortoise, or Pando, the 80,000-year-old clonal tree system), are there observable evolutionary differences between old, still-living individuals and "newborn" individuals?"
askscience
"Does a diamond melt in lava?"
askscience
"In terms of a percentage, how much oil is left in the ground compared to how much there was when we first started using it as a fuel?"
askscience
"Scientists have recently said the greenland ice is past the “point of no return” - what will this mean for AMOC?"
askscience
"If the planet was shaped like a donut, how would gravity work in the middle?"
askscience
"How does a video game or software randomly decide something?"
askscience
"AskScience AMA Series: We have hints of life on Venus. Ask Us Anything!"
askscience
"AskScience AMA Series: We have made the first successful test of Einstein's General Relativity near a supermassive black hole. AUA!"
askscience
"Are albino animals ever shunned for looking different from the rest of their group?"
askscience
"Is there a certain priority list for a severely damaged human body to heal itself?"
askscience
"A flu shot is a vaccine, right? But they seem to be far less reliable than other vaccines (I know many people who get flu shots each year then get the flu). What is the reason for this, and are flu shots really that important?"
askscience
"Why do the boys rescued from the cave in Thailand need to be quarantined?"
askscience
"If the universe is expanding in all directions how is it possible that the Andromeda Galaxy and the Milky Way will collide?"
askscience
"If a person has been depressed for a long time, is there some kind of 'damage' to their brain, and can anti-depressants reverse the damage?"
askscience
"What is the ecological impact of toilet paper?"
askscience
"If extra wings seen on biplanes add more lift and maneuverability, why don’t we add them to modern planes or jets and have them built into the airframe like we do today?"
askscience
"What’s the difficulty in making a pill that actually helps you lose weight?"
askscience
"Why are people’s palms never dark?"
askscience
"When did pee and poo got separated?"
askscience
"Why does putting a leaf between pages of a firmly closed book prevent the leaf from decaying?"
askscience
"How is it known that everyone with blue eyes has one single ancestor, rather than this mutation occurring in multiple individuals at many different times?"
askscience
"Sometimes websites deny a password change because the new password is "similar" to the old one, How do they know that, if all they got is a hash that should be completely different if even 1 character was changed?"
askscience
"Why do flames take a clearly defined form, rather than fire just being a glow of incandescent radiation?"
askscience
"Why do some birds hop while some of them walk?"
askscience
"Why is it normal for children in practically all cultures to call parents "Mother" or "Father" rather than their real names?"
askscience
"When an animal is eaten whole, how does it actually die? Suffocation? Digestive acid?"
askscience
"Is the Delta variant a result of COVID evolving against the vaccine or would we still have the Delta variant if we never created the vaccine?"
askscience
"How did viruses come to exist in the first place? How likely is it that they would exist on other planets with forms of life?"
askscience
"If iron loses its magnetism at around 1400°F, how is the earths core magnetic?"
askscience
"Do tall people have larger internal organs? If not, how do their bodies fill the extra space?"
askscience
"During a nuclear disaster, is it possible to increase your survival odds by applying sunscreen?"
askscience
"Given the way the Indian subcontinent was once a very large island, is it possible to find the fossils of coastal animals in the Himalayas?"
askscience
"Is the Chernobyl core still melting to this day?"
askscience
"I've seen reports that the Pfizer coronavirus vaccine may give up to 52% protection 10 days after the first shot. Does the Moderna data suggest anything like this as well?"
askscience
"How do surgeons avoid air bubbles in the bloodstreams after an organ transplant?"
askscience
"If the human bodies reaction to an injury is swelling, why do we always try to reduce the swelling?"
askscience
"How is personality formed?"
askscience
"Does the language you speak affect the shape of your palate?"
askscience
"How does our body know when we need to drink water?"
askscience
"Why are batteries arrays made with cylindrical batteries rather than square prisms so they can pack even better?"
askscience
"How come the majority of people in the world are right-handed?"
askscience
"How did dinosaurs have sex?"
askscience
"Are there viruses that infect, reproduce, and spread without causing any ill effects in their hosts?"
askscience
"Why aren't NASA operations run in the desert of say, Nevada, and instead on the Coast of severe weather states like Texas and Florida?"
askscience
"What is a "zip file" or "compressed file?" How does formatting it that way compress it and what is compressing?"
askscience