/u/lilmul123's posts in /r/askscience

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Why was/is it necessary for sperm to exist outside the body (i.e. inside testicles) from an evolutionary standpoint? Why didn't sperm instead evolve to adapt to the temperatures inside the body?

21 upvotes

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What exactly is going on in our brains when we find it easy to recall something one moment, and nearly impossible another moment?

1 upvotes

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From an evolutionary standpoint, are humans intended to be monogamous?

1 upvotes

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How do elderly people find other elderly people physically attractive?

0 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why was/is it necessary for sperm to exist outside the body (i.e. inside testicles) from an evolutionary standpoint? Why didn't sperm instead evolve to adapt to the temperatures inside the body?	21
What exactly is going on in our brains when we find it easy to recall something one moment, and nearly impossible another moment?	1
From an evolutionary standpoint, are humans intended to be monogamous?	1
How do elderly people find other elderly people physically attractive?	0