 "A Fierce Green Fire", published by Hill & Wang, in 1993 (and published as paperback by Island Press, 2003) was his first full-length book.It is the definitive history and analysis of American environmentalism, from its early seeds in efforts to preserve wilderness through its maturity as a social, political and cultural movement; it offers the hope that “we will be able to save ourselves from the grave dangers we have created by our destructive use of the natural world.”

That was followed by "A New Name for Peace