Ronald Amundson--professor of pedology (soil science) in the Division of Ecosystem Sciences at the University of California, Berkeley.

David Applegate--Director of Government Affairs at the American Geological Institute.

Victor R. Baker--1998 President of the Geological Society of America, and Head of the Department of Hydrology and Water Resources at the University of Arizona.

Jay L. Banner--associate professor in the Department of Geological Sciences at University of Texas who specializes in the evolution of groundwater, surface water, and the oceans.

Paul Bierman--recipient of the Geological Society of America's Young Scientist Award for his promising research on glaciers and climate (University of Vermont).

Marcia G. Bjørnerud--associate professor of geology at Lawrence University who's interested in how scientific depictions of nature both influence and reflect popular cultural beliefs.

Caryl Edward Buchwald--professor of environmental studies at Carleton College whose work includes many years of service on Minnesota's state environmental regulatory boards.

David M. Bush--member of the National Academy of Sciences Post-Disaster Field Study Team for both Hurricane Gilbert and Hurricane Hugo (State University of West Georgia).

Paul Doss--assistant professor and chair of the Geology Department at The University of Southern Indiana in Evansville specializing in environmental geology, physical geology, wetland science, and hydrogeology.

Thomas F. Downham, II--professor of dermatology at the Wayne State University School of Medicine who studies the health effects of ultraviolet radiation in relation to global ozone depletion.

Gordon P. Eaton--former director of two of this country's major institutions of earth science: the U. S. Geological Survey and Columbia University's Lamont-Doherty Earth Observatory.

James E. Evans--teacher of sedimentology, hydrogeology, and mechanics of fluid motion in the Geology Department at Bowling Green State University.

George W. Fisher--professor of earth and planetary sciences at The John Hopkins University who studies the moral, ethical, and theological dimensions of issues linking the earth sciences to sustainability and human health.

Wilfrid M. Gill--hydrogeologist in the southwestern United States.

Johan F. Gottgens--limnologist in the Department of Biology at the University of Toledo.

Stephen Jay Gould--teacher of geology, history of science, and biology at Harvard University and New York University, and recipient of many awards--among them the National Book Award, the National Book Critic's Circle Award, and a MacArthur Foundation Prize.

Rosa E. Gwinn--environmental geochemist at a major environmental consulting firm in Bethesda, Maryland.

Robin L. Hornung--co-chair of the National Council of Sun Protection, Ozone Depletion, and the Ultraviolet Index for the National Association of Physicians for the Environment and assistant professor in pediatrics at the University of Washington School of Medicine.

Susan Werner Kieffer--MacArthur Fellow and founder of Kieffer & Woo, Inc., a research and development company that specializes in nonlinear earth processes and data analysis.

Allison Macfarlane--Social Science Research Council-MacArthur Foundation fellow in International Peace and Security at the Belfer Center for Science and International Affairs at Harvard University.

Scudder D. Mackey--geologist at the Ohio Geological Survey.

Cathryn A. Manduca--member of the Olmsted County Environmental Commission (she was chair in 1998).

John McPhee--Staff writer for the New Yorker and winner of the Pulitzer Prize for Annals of the Former World, his comprehensive work on the geology of North America.

Kirsten M. Menking--assistant professor of geology at Vassar College and co-author of the textbook Environmental Geology: An Earth Systems Approach.

Tamara Nameroff--Climate Task Force Coordinator for the President's Council on Sustainable Development.

William J. Neal--professor of geology at Grand Valley State University and winner of the 1993 American Geological Institute's Award for Outstanding Contributions to Public Understanding of Geology.

Naomi Oreskes--associate professor of history of science at the University of California at San Diego.

Jeffrey L. Payne--Deputy Director of the National Oceanic and Atmospheric Administration's Coastal Services Center in Charleston, South Carolina.

Orrin H. Pilkey--professor of geology and director of the Program for the Study of Developed Shorelines at Duke University and recipient of the Francis Shepard Award for excellence in marine geology from the Geological Society of America.

Lauret E. Savoy--associate professor in geology and geography at Mount Holyoke College.

Jill S. Schneiderman--associate professor of geology at Vassar College.

John M. Sharp, Jr.--professor of geology at the University of Texas, Austin.

Virginia Ashby Sharpe--philosopher at the Hastings Center in Garrison, New York who specializes in health care ethics and environmental philosophy.

Jill Singer--sedimentologist and professor at Buffalo State College.

Steven M. Stanley--professor in the Department of Earth and Planetary Sciences at The John Hopkins University and author of the Earth System History and Children of the Ice Age.

Meg E. Stewart--consultant for a major environmental firm working on problems of pollution in New York and New Jersey Harbor and Geographic Information Systems specialist in the Department of Geology and Geography at Vassar College.

Frederick J. Swanson--U.S. Forest Service geologist and head of the Long-Term Ecological Research program sponsored by the National Science Foundation at the H. J. Andrews Experimental Forest in western Oregon.

E-an Zen--member of the National Academy of Sciences, former President of the Geological Society of America, and adjunct professor of geology at the University of Maryland.