"Darren Speece’s important new book on the battles to save the northern California redwoods in the 1980s and 1990s is a significant contribution to our understanding of environmentalism. . . . It is also the finest book written on the history of American environmentalism in the last five years. . . . Speece paints a complex picture of a grassroots movement with a useful attention to both detail and clear writing that should spawn conversations among both historians and activist communities on the lessons to be learned from the redwoods. . . . Defending Giants is an outstanding contribution to the historiography of environmentalism."