This research examines theoretically and empirically the origins of agriculture. The theory highlights the role of climatic sequences as a fundamental determinant of both technological sophistication and population density in a hunter-gatherer regime. It argues that foragers facing volatile...

Synopsis: Since the beginning of serious field studies of nonhuman primates in the early 1930s, many primatologists have been arguing that humans and their simian cousins differ much less than commonly believed. Little systematic attention, however, has focused on the degree to which the...