Since the first Earth Day in 1970, environmentalism has become woven into the fabric of American life. Concern for environmental quality has influenced how we think, work, and recreate; what we buy; and how we govern. But popular consensus on the environment is more complicated than it appears. The real question is no longer whether Americans side with environmentalism, but the depth of their commitment. This book argues that understanding public opinion, the grassroots of the "green" revolution, is essential to sustaining genuine environmental progress.