The twentieth-century environmental movement owes much to a single man: David Brower. Countless natural wonders would have been lost if not for his efforts and the tremendous energy put forth by organizations he directed and/or founded (including the Sierra Club, Friends of the Earth, and the Earth Island Institute). A tireless defender of wild areas, Brower worked to protect iconic places, including the Grand Canyon and the California redwood forests, and his work and passion helped define...