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and public policy from Harvard University, and a B.S. in civil engineering and an M.S. and a Ph.D. in environmental engineering from the University of Illinois at Urbana-Champaign.

Amy E. Childress is an associate professor in the Department of Civil and Environmental Engineering and director of the Environmental Engineering Program at the University of Nevada, Reno. In 2004, she was a visiting associate professor at the University of New South Wales in Sydney, Australia. Dr. Childress teaches an undergraduate introductory course in environmental engineering and graduate courses in physical and chemical processes in water and wastewater treatment and colloidal and interfacial processes. Her research focuses on membrane contactor processes, pressure-driven membrane processes, and membrane bioreactor technology. Dr. Childress is president-elect of the Association of Environmental Engineering and Science Professors and serves on the advisory board of Desalination. She is also a member of the American Society of Civil Engineers, the American Chemical Society, the American Water Works Association, and the North American Membrane Society. She was recipient of a National Science Foundation CAREER Award in 2001. She received M.S. and Ph.D. degrees in environmental engineering from the University of California, Los Angeles, in 1993 and 1997, respectively.

Bruce S. Dien is a biochemical engineer with the U.S. Department of Agriculture’s National Center for Agricultural Utilization Research in Peoria, Illinois. In this position, he conducts process development for conversion of corn fibrous streams from the corn milling industry into ethanol. He has served on several multi-instructional research projects in this regard with other federal laboratories, as well as with industrial and academic partners. Dr. Dien is also part of an interdisciplinary team that developed microorganisms for converting sugars mixtures to ethanol or lactic acid at yields greater than 90 percent of theoretical. He received a B.S. in food process engineering and in biochemistry from Purdue University (1988) and a Ph.D. in chemical engineering from the University of Minnesota (1994).

Edward W. Felten is a professor of computer science and public affairs at Princeton University and is the founding director of Princeton’s Center for Information Technology Policy. His research interests include computer security and privacy, especially relating to media and consumer products, and technology law and policy. He has published about 80 papers in the research literature and two books. His research on topics such as web security, copyright and copy protection, and electronic voting has been covered extensively in the popular press. Dr. Felten’s weblog at <> is widely read for its commentary on technology, law, and policy. He was the lead computer science expert witness for the U.S. Department of Justice in the Microsoft antitrust case,

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