NEIL E. CARRIKER is the quality manager for the Tennessee Valley Authority (TVA) Water Management Division. Previously, he was a senior environmental engineer in the same organization with responsibilities for a variety of activities focusing on monitoring the quality of water in the Tennessee River and its reservoirs and tributaries, and interpreting the data to identify trends and relate water quality to land use, natural processes, and pollution impacts. Carriker represents TVA on several interagency committees and task groups.

CRAIG COX is special assistant to the chief of the Natural Resource Conservation Service of the U.S. Department of Agriculture (USDA), where he is responsible for strategic planning and natural resource assessment. He was formerly a senior staff officer at the Board on Agriculture of the National Research Council (NRC), where he directed three major studies, including Soil and Water Quality: An Agenda for Agriculture, and Rangeland Health: New Methods of Classifying, Inventorying, and Monitoring Rangelands. Between his stints at the NRC and USDA, Cox was on the staff of the Senate Committee on Agriculture, Nutrition and Forestry, where he led work on natural resource and environmental issues. He holds an M.S. in agricultural and applied economics from the University of Minnesota.

JOHN R. EHRENFELD is senior research associate in the Massachusetts Institute of Technology (MIT) Center for Technology, Policy, and Industrial Development. At MIT since 1985, he directs the Program on Technology, Business, and Environment. Ehrenfeld also serves as a core faculty member in the MIT Technology and Policy Program. His research examines the way businesses manage environmental concerns; systems for introducing design for environment into the product development process; the impacts of voluntary codes of corporate environment management on strategy development and culture change; and industrial ecology. Ehrenfeld is a member of the American Chemical Society, American Association for the Advancement of Science, Air & Waste Management Association, and the Society for Risk Analysis. He is an editor of the new Journal of Industrial Ecology and a member of the editorial advisory board of Environmental Science & Technology. Ehrenfeld holds a B.S. and Sc.D. in chemical engineering from MIT and is author or coauthor of over 100 papers, reports, and other publications.

PAUL FAETH is a senior associate in the World Resources Institute (WRI) Program in Population and Economics. He directs a project area on the economics of sustainable agriculture. The first phase of this research involved a multi-country effort examining the impact of agricultural policies on the adoption and generation of resource-conserving agricultural technologies. The second phase was a national natural resource accounting study of U.S. agriculture—the first ever of its kind. Faeth is WRI's liaison to the Sustainable Agriculture Task Force

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