Barry Solomon is a professor emeritus of geography and environmental policy in the Department of Social Sciences at Michigan Technological University, where he specializes in energy and environmental policy. He is past president and founder of the U.S. Society for Ecological Economics.  Previously, he was a senior economist in the Acid Rain and Climate Change Divisions of the U.S. Environmental Protection Agency (EPA) in Washington, D.C., where he helped to design and implement the first national system of emissions credit trading, and before that he was senior staff at the Federal Energy Regulatory Commission and the Energy Information Administration of the U.S. Department of Energy. He is coauthor or co-editor of 7 books, 80 refereed journal articles, and over 130 other publications. Currently he is co-editor of The Encyclopedia of Ecological Economics (Edward Elgar, forthcoming). He has received funding from the EPA, DOE, NSF, Michigan Economic Development Corp., Caterpillar, Inc., and has consulted for the UN Environment Programme, DOE, U.S. Postal Service, AAAS, United States Academic Decathlon, and National Geographic Society.