A little girl likes all kinds of kisses, including a fluffy kiss from a cat and a fluttery kiss from a butterfly. And she gets a smelly-yelly brother kiss. But

Anna had everything figured out – she was about to start senior year with her best friend, she had a great weekend job and her huge work crush looked as if it

From a noted science journalist comes a wonderfully witty and fascinating exploration of how and why we kiss. When did humans begin to kiss? Why is kissing inte

Ryan and Selena Frederick were newlyweds when they landed in Switzerland to pursue Selena's dream of training horses. Neither of them knew at the time that Ryan

The fascinating evolutionary links between six seemingly unremarkable traits that make us the very remarkable creatures we are. Countless behaviors separate us