This exciting new reader in environmental history provides a framework for understanding the relations between ecosystems and worldsystems over time. Alf Hornborg, J. R. McNeill, and Joan MartinezAlier have brought together a group of the foremost writers from the social, historical, and geographical sciences to provide an overview of the ecological dimension of global, economic processes, with a longterm, historical perspective. Readers are challenged to integrate studies of the Earthsystem with studies of the worldsystem, and to reconceptualize the relations between human beings and their environment, as well as the challenges of global sustainability.