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

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Why does paper stay folded once you fold or wrinkle it? And since placing heavy objects on paper can help smooth it out, how much force would you have to apply to a creased sheet of paper to make it completely "smooth" again?

591 upvotes

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Why does coffee have caffeine? i.e. What purpose does this chemical serve to the coffee plants?

20 upvotes

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Is the perceived difference in behaviors of men and women influenced more by social conditioning or by inherent differences in their brain chemistry?

19 upvotes

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What is the chemical/physiological process that adjusts our bodies to "different sleep schedules"?

3 upvotes

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There are obvious reasons behind human beauty (fertility, child raising) but why do we perceive non-human things (natural vistas, cute animals) as beautiful?

2 upvotes

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Besides being uncomfortable, how would living in a climate of say... 65 degrees Celsius effect our bodies? What is the highest temperature we could withstand living in?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why does paper stay folded once you fold or wrinkle it? And since placing heavy objects on paper can help smooth it out, how much force would you have to apply to a creased sheet of paper to make it completely "smooth" again?	591
Why does coffee have caffeine? i.e. What purpose does this chemical serve to the coffee plants?	20
Is the perceived difference in behaviors of men and women influenced more by social conditioning or by inherent differences in their brain chemistry?	19
What is the chemical/physiological process that adjusts our bodies to "different sleep schedules"?	3
There are obvious reasons behind human beauty (fertility, child raising) but why do we perceive non-human things (natural vistas, cute animals) as beautiful?	2
Besides being uncomfortable, how would living in a climate of say... 65 degrees Celsius effect our bodies? What is the highest temperature we could withstand living in?	1