Can environmentalism evolve into a powerful social movement that transforms human practices in ways that are ecologically sustainable? Gary C. Bryner contends that it is in our self-interest as a species to ensure that environmental movements coalesce in the service of sustainability. From the very first Earth Day to the setting of Agenda 21 for the new millennium, this book traces the actors, the issues, and the institutions involved in moving environmentalism from a loose collection of fuzzy groups and goals to a new global force for change.