Forcing the Springchallenges standard histories of the environmental movement by offering a broad and inclusive interpretation of past environmentalist thought and a sweeping redefinition of the nature of the contemporary environmental movement. Robert Gottlieb demonstrates the centrality of environmental concerns to a wide range of social movements of the past century as he explores the connections between pressures on human and natural environments and the role of these pressures in shaping society. His analysis provides fundamental new insights into the past and future of the American environmental movement by placing it within the larger context of American social history.After considering the historical roots of environmentalism from the 1890s through the 1960s, Gottlieb discusses the rise and consolidation of environmental groups in the years between Earth Day 1970 and Earth Day 1990. He examines the increasing professionalization of the major environmental organizations and the parallel rise of community-based groups over the past decade, and ends with an in-depth consideration of the role of ethnicity, gender, and class in the formation and definition of movements.