Bruce Bolt (late) was Professor Emeritus of Seismology and former Director of the Seismographic Stations at the University of California, Berkeley. He was frequently called upon to consult on earthquake hazard reduction, and helped estimate the likely strong ground motions affecting major structures in the San Francisco Bay Area, New York, San Diego, and South Carolina.  Bolt passed away in 2005.

David Courard-Hauri is an Associate Professor of Environmental Science and Policy at Drake University in Des Moines, Iowa. At Drake, Dr. Courard-Hauri teaches courses on Environmental Science, Climate Change Science and Policy, Quantitative Methods in Environmental Decision Making, and Ecological Economics. With a PhD in Chemistry from Stanford University, and a Masters in Public Affairs from Princeton's Woodrow Wilson School, Dr. Courard-Hauri seeks in his research to combine aspects of environmental science, economics, and public policy in his work modeling economic consumption and its environmental impacts. He walks to work, and in his spare time cares for a multitude of fruit trees and berries in his yard.

Andrew J. Friedland is The Richard and Jane Pearl Professor in Environmental Studies and Chair of the Environmental Studies Program at Dartmouth. He was the founding chair of the Advanced Placement Test Development Committee (College Board) for Environmental Science. He has a strong interest in high school science education and in the early years of APES he participated in a number of trainer and teacher workshops at Kimball Union Academy, Dartmouth College, and elsewhere. During many of the last ten summers, he has guest lectured at the St. Johnsbury Academy (Vermont) AP Institute for Secondary Teachers. Friedland regularly teaches introductory environmental science and energy courses and has taught courses in forest biogeochemistry, global change, and soil science, as well as foreign study courses in Kenya. For more than two decades, Friedland has been researching the effects of air pollution (lead, nitrogen, sulfur, calcium) on high-elevation forests of New England and the Northeast. More recently, he has begun investigating the impact of individual choices and personal action on energy consumption and the environment.  Friedland has served on panels for the NSF and USDA Forest Service and has just finished serving on his third panel of the Science Advisory Board of the EPA. He has authored or coauthored more than fifty-five peer-reviewed publications and one book, Writing Successful Science Proposals (Yale University Press). Friedland received BAs in Biology and Environmental Studies and a PhD in Geology from the University of Pennsylvania.  He is passionate about saving energy and can be seen wandering the halls of the Environmental Studies Program at Dartmouth with a Kill-A-Watt meter, determining the electricity load of vending machines, data projectors, and computers.

Donn S. Gorsline is Professor Emeritus of Earth Sciences at the University of Southern California. Previously he held USC's Wilford and Daris Zinsmeyer Chair in Marine Studies and was the recipient of the 1991 USC Faculty Lifetime Acheivement Award.  Gorsline has also served as chairman of the earth sciences section of the American Association for the Advancement of Science (AAAS).

John Grotzinger is a field geologist interested in the evolution of the Earth's surface environments and biosphere.  His research addresses the chemical development of the early oceans and atmosphere, the environmental context of early animal evolution, and the geologic factors that regulate sedimentary basins.  He has contributed to developing the basic geologic framework of a number of sedimentary basins and orogenic belts in northwestern Canada, northen Siberia, southern Africa, and the western United States.  He received his B.S. in geoscience from Hobart College in 1979, an M.S. in geology from the University of Montana in 1981, and a Ph.D. in geology from Virginia Polytechnic Institute and State University in 1985.  He spent three years as a research scientist at the Lamont-Doherty Geological Observatory before joinning the MIT faculty in 1988.  From 1979 to 1990, he was engaged in regional mapping for the Geological Survey of Canada.  He currently works as a geologist on the Mars Exploration Rover team, the first mission to conduct ground-based exploration of the bedrock geology of another planet, which has resulted in the discovery sedimentary rocks formed in aqueous depositional environments.  In 1998, Dr. Grotzinger was named the Waldemar Lindgren Distinguished Scholar at MIT, and in 2000 he became the Robert R. Schrock Professor of Earth and Planetary Sciences.  In 2005, he moved from MIT to Caltech, where he is the Fletcher Jones Professor of Geology.  He received the Presidential Young Investigator Award of the National Science Foundation in 1990, the Donath Medal of the Geological Society of America in 1992, and the Henno Martin Medal of the Geological Society of Namibia in 2001.  He is a member of the American Academy of Arts & Sciences and the U.S. National Academy of Sciences.