In case studies ranging from the Far East to the American Southwest, the authors of provide a global perspective on contemporary research into the origins of agriculture. Downplaying more traditional explanations of the turn to agriculture, such as the influence of marginal environments and population pressures, the authors emphasize instead the importance of the resource-rich areas in which agriculture began, the complex social organizations already in place, the role of sedentism, and, in some locales, the advent of economic intensification and competition.