Contributors: Terry Tempest Williams, Gretel Ehrlich, Ed Douglas, William McDonough, Michael Braungart, George B. Schaller, Jim Thorsell, Reinhold Messner, Wade Davis, Sid Marty, Dermot Somers, Edwin Bernbaum, John Amatt, Bernard Amy, Chris Rainier, Rick Ridgeway, Johan Reinhard, Barry Lopez, Yvon Chouinard