/r/askscience

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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?

9824 upvotes • kamenoccc

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How does a master key work?

9789 upvotes • Gadeaux

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Why do "campfire smells" (or other wood-burning smells) seem to stick to clothing/skin longer than other smells?

9781 upvotes • Dandymcstebb

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How can a vessel contain 100M degrees celsius?

9781 upvotes • therealkevinard

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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?

9771 upvotes • rob132

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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?

9770 upvotes • oldfartbart

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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?

9758 upvotes • SjaakRake

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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?

9754 upvotes • hilarymeggin

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What exactly is happening to your (nerves?) when circulation gets cut off and you start to tingle?

9752 upvotes • whirlpoohl

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What’s that lump in your throat you get when you’re about to cry?

9740 upvotes • karenfromfinance_

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Title	Upvotes	Author	Mark as read	Favorited	Rating	Add to a list
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?	9824	kamenoccc
How does a master key work?	9789	Gadeaux
Why do "campfire smells" (or other wood-burning smells) seem to stick to clothing/skin longer than other smells?	9781	Dandymcstebb
How can a vessel contain 100M degrees celsius?	9781	therealkevinard
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?	9771	rob132
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?	9770	oldfartbart
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?	9758	SjaakRake
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?	9754	hilarymeggin
What exactly is happening to your (nerves?) when circulation gets cut off and you start to tingle?	9752	whirlpoohl
What’s that lump in your throat you get when you’re about to cry?	9740	karenfromfinance_