AMES, Iowa – Iowa State University Anthropology Professor Jill Pruetz long suspected that man-made changes influenced the aggressive behavior researchers have observed among chimpanzees. However, her ...

CHICAGO (WLS) -- Animal researchers have known for some time that chimpanzees are very much like us. But a new study shows that just as we go to war sometimes to protect our territory and way of life, ...

"Authoritative, provocative, and engaging, The Goodness Paradox offers a startlingly original theory of how, in the last 250,000 years, humankind became an increasingly peaceful species in daily ...