EvolutionJune 1, 2006
Bonobo Sex and Society
The behavior of a close relative challenges assumptions about male supremacy in human evolution
Stories by Frans B. M. De Waal
The SciencesDecember 1, 2000
Laugh and the World Laughs with You
A Scientific Investigation
by Robert R. Provine
Viking, New York, 2000 ($24.95)