Are we consuming too much--for what?

HERMAN E. DALY,∗ BRIAN CZECH,† DAVID L. TRAUGER,‡ WILLIAM E. REES,§ MANSI GROVER, TRACY DOBSON,†† AND STEPHEN C. TROMBULAK‡‡ ∗School of Public Affairs, Van Munching Hall, University of Maryland, College Park, MD 20742-1821, U.S.A., email hdaly@umd.edu †Department of Wildlife and Fisheries Sciences, Virginia Polytechnic Institute and State University, National Capital Region, Alexandria Center, 1021 Prince Street, Alexandria, VA 22314, U.S.A. ‡Natural Resources Program, Virginia Polytechnic Institute and State University, National Capital Region, Alexandria Center, 1021 Prince Street, Room 312, Alexandria, VA 22314, U.S.A. §University of British Columbia, School of Community and Regional Planning, Vancouver, BC V6T 1Z2, Canada ††Department of Fisheries and Wildlife, Michigan State University, 10C Natural Resources Building, East Lansing, MI 48824-1222, U.S.A. ‡‡Biology and Environmental Studies, Department of Biology, Middlebury College, Middlebury, VT 05753, U.S.A.