The heroes of this fascinating account of primate behavior and evolution are bonobos, members of a species closely related to both humans and chimpanzees but distinguished by its comparatively nonviolent and relatively egalitarian social structure. Wrangham and Peterson look to studies of bonobo social organization and behavior for insight into social mechanisms to control human violence. The influence of sociobiology is evident at every step in the authors' (which the authors dub Galton's error). The book is an accessible, gripping, sometimes surprising account of the depth and extent of violent behavior among primates as well as a provocative discussion of its origins and possible remedies. Booklist, ALA