Scientific American on nocturnal penile tumescence:
It may seem to you that, much like their barnyard animal namesake, men’s reproductive organs the world over participate in a mindless synchrony of stiffened salutes to the rising sun.
Showing posts with label biology. Show all posts
Showing posts with label biology. Show all posts
Tuesday, May 24, 2011
Startling Scientific American quote of the day
Thursday, January 6, 2011
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