Chillin’ with the sperm.

AskMetaFilter tackles the questions enquiring minds want to know: Why, evolution-wise, do the testes hang outside a human body? Come on, you wondered that too…

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  1. Temp, so they cool down.

  2. Well, of course… but WHY? Why should a cell that makes a human, that does all of its work inside a human’s body at body temperature, have to be created at sub-body temperature? It’s weird, you know?

  3. Who ARE those people? Interesting conversation, though

  4. I admit it. I wondered, too. =)

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