May 23 -- Here's the scene: A young woman who is feeling a hormone flush looks approvingly at someone other than her spouse and fantasizes about spending a weekend at the beach with a guy she doesn't ...

These three bird courtship displays are so bold, precise and theatrical that they make human romance look a little underdeveloped.

The German cockroach evolved to live only in human environments. This means it's very good at adapting to pest control methods — even if it means changing its mating rituals. And now we turn to ...