/u/grapp's posts in /r/askscience

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how much higher would animal population sizes be if humans had died out thousands of years ago?

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could we get humans to mars and back by 2020 if we really had to for some reason?

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how do insects get to islands?

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Suppose you visited a parallel Earth that deviated from ours centuries ago (like suppose Henry III died five years early, or something like that). Assuming they have them at all, how likely do you think it'd be that they'd be using computers that use a binary system like ours?

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I just watched that Kurz Gesagt video about the effect of a coin size black hole on Earth's surface. Exactly how large would a black have to be to be able to cheat hawking radiation death, by absorbing matter from the Earth?

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suppose a major space rock (between 10 and 20 KM wide) hit the Earth. Setting aside the issue of supplies, would people on the ISS be safe?

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when was the last (pre-modern) time Earth was as hot it is now?

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A teacher once told me that the vast majority of viruses are harmless. How can you destroy a host's cells without harming it?

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does this sound at all right?

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are computer chips terribly resource intensive, to mass produce?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
how much higher would animal population sizes be if humans had died out thousands of years ago?	2
could we get humans to mars and back by 2020 if we really had to for some reason?	2
how do insects get to islands?	1
Suppose you visited a parallel Earth that deviated from ours centuries ago (like suppose Henry III died five years early, or something like that). Assuming they have them at all, how likely do you think it'd be that they'd be using computers that use a binary system like ours?	1
I just watched that Kurz Gesagt video about the effect of a coin size black hole on Earth's surface. Exactly how large would a black have to be to be able to cheat hawking radiation death, by absorbing matter from the Earth?	1
suppose a major space rock (between 10 and 20 KM wide) hit the Earth. Setting aside the issue of supplies, would people on the ISS be safe?	1
when was the last (pre-modern) time Earth was as hot it is now?	1
A teacher once told me that the vast majority of viruses are harmless. How can you destroy a host's cells without harming it?	1
does this sound at all right?	1
are computer chips terribly resource intensive, to mass produce?	0