Socializing is found across the animal kingdom, but osculation – or kissing – seems to a human behavior. How did it start and why? The Science of Kissing author Sheril Kirshenbaum discusses the history and biology behind kissing.
Sheril Kirshenbaum is co-author of Unscientific America: How Science Illiteracy Threatens Our Future (Basic Books, 2009) and the author of The Science of Kissing. She is also the director of Energy Poll at the University of Texas, Austin in Austin, Texas.