This text provides an introduction to the policy making process in the United States with regard to air, water, land use, agriculture, energy, waste disposal, and other areas, in addition to chapters on global and international environmental issues and institutions.

It explains why some environmental ideas shape policy while others do not, and illustrates that even when the best short- and long-term solutions to environmental problems are identified, the task of implementing these solutions is either left undone or is completed too late. Also included is a comprehensive history of the environmental movement.