Worldchanging : a user's guide for the 21st century / edited by Alex Steffen ; foreword by Al Gore ; design by Sagmeister Inc. - New York : Abrams, 2006. - 596 p. : ill. ; 25 cm. Includes bibliographical references (p. 538-546) and index. ISBN: 0810930951 (hardcover) 9780810930957 (hardcover) 0810993384 (pbk.) 9780810993389 (pbk.) Subjects--Topical Terms: Environmentalism.Sustainable development.Green movement. LC Class. No.: HC79.E5 / W676 2006