How do imperceptibly small differences in the environment change one's behavior? What is the anatomy of a bad mood? Does stress shrink our brains? What does People magazine's list of America's "50 Most Beautiful People" teach us about nature and nurture? What makes one organism sexy to another? What makes one orgasm different from another? Who will be the winner in the genetic war between the sexes? Welcome to Monkeyluv, a curious...