Robert V. Percival is Professor of Law, Robert Stanton School and Director of the Environmental Law School Program of the University of Maryland School of Law. He is the principal author of Environmental Regulation: Law, Science, and Policy, and numerous articles on law and the environment. Dorothy C. Alevizatos is an environmental lawyer with a Baltimore law firm. She has an M.S. in conservation biology from the University of Maryland. CONTRIBUTORS: Edward Abbey, Bruce A. Ackerman, Vicki Been, Joel Franklin Brenner, Robert D. Bullard, Lynton Keith Caldwell, J. Baird Callicott, Rachel Carson, Ronald H. Coase, Robert W. Collin, Herman Daly, David Doniger, Thomas R. Dunlap, Gregg Easterbrook, Environmental Defense Fund, Daniel A. Farber, First National people of Color Environmental Leadership Summit, Clayton P. Gillette, H. Scott Gordon, Al Gore, Gene M. Grossman, Robert W. Hahn, Samuel P. Hays, Paul A. Hemmersbaugh, James A. Henderson, Donald T. Hornstein, Peter W. Huber, James E. Krier, Alan B. Krueger, Howard Latin, Richard J. Lazarus, James P. Leape, Gerald Markowitz, Arthur F. McEvoy, Thomas D. McGarity, Alan Miller, Arne Naess, Roderick Nash, William F. Pederson, Office of Technology Assessment, Richard N. Pearson, The President's Council on Sustainable Development, Robert L. Rabin, Tom Regan, Richard L. Revesz, William H. Rogers, Jr., Carol M. Rose, David Rosner, William D. Ruckelshaus, Mark Sagoff, Joseph L. Sax, Christopher Schroeder, Sidney A. Shapiro, Richard B. Stewart, Christopher D. Stone, Jr., Laurence H. Tribe, United Nations Conference on Environment and Development, Lynn White, Jr., George F. Will, and the World Commission on Environment and Development