Can virtuous behavior be explained by nature, and not by human rational choice? "It's the animal in us," we often hear when we've been bad. But why not when we'

To observe a dog's guilty look. to witness a gorilla's self-sacrifice for a wounded mate, to watch an elephant herd's communal effort on behalf of a stranded ca

Moral behavior does not begin and end with religion but is in fact a product of evolution.

Sue Savage-Rumbaugh's work on the language capabilities of the bonobo Kanzi has intrigued the world because of its far-reaching implications for understanding t

"This book is a broad synthesis of new world monkey evolution, integrating their unique evolutionary story into the bigger picture of primate evolution and Amaz