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

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If Earth were in tidal lock relative to the sun, how wide would the habitable zone be? Would it be more on the "day" side or the "night" side?

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Should we be trying to domesticate as many species as possible?

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I have heard that the human scrotum hangs outside the body because the optimal temperature for sperm is slightly below body temperature. If this is true, why can some warm-blooded animals (most obviously birds) have internal testicles without ill effect?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If Earth were in tidal lock relative to the sun, how wide would the habitable zone be? Would it be more on the "day" side or the "night" side?	1
Should we be trying to domesticate as many species as possible?	1
I have heard that the human scrotum hangs outside the body because the optimal temperature for sperm is slightly below body temperature. If this is true, why can some warm-blooded animals (most obviously birds) have internal testicles without ill effect?	1