the National Academy of Sciences of the United States of America. For the last 18 years, the Institute for Scientific Information has ranked him as the world’s most-cited environmental scientist. In 2008, the emperor of Japan presented him with the International Prize for Biology.

David Gray is director of energy systems analysis at Noblis (formerly Mitretek Systems), a nonprofit consulting company. His expertise is in coal and natural-gas conversion to liquid fuels, heavy-oil and bitumen upgrading technologies, waste-to-energy conversion systems, and greenhouse gas emission and reduction analysis. Previously, he worked as a research manager at the Fuel Research Institute in South Africa on coal-to-liquid transportation-fuels production processes.

Robert D. Hall is retired general manager of Amoco Corporation. He has extensive experience in alternative-fuels R&D, in strategic planning, in R&D management, and in technology innovation. Mr. Hall held a number of positions at Amoco Corporation, including general manager of alternative-fuels development, manager of management systems and planning, director of the Amoco Oil Company R&D Department, director of the Amoco Oil Company Design and Economics Division, and supervisor of the Amoco Chemical Company Process Design and Economic Division. He has served on several National Research Council committees, including the Committee on Production Technologies for Liquid Transportation Fuels, the Committee on Strategic Assessment of the Department of Energy’s Coal Program, the Committee to Review the R&D Strategy for Biomass-Derived Ethanol and Biodiesel Transportation Fuels, and the Committee on Benefits of DOE R&D on Efficiency and Fossil Energy. Mr. Hall is a past chairman of the International Council on Alternate Fuels.

Edward A. Hiler retired as the holder of the Ellison Chair in International Floriculture of Texas A&M University. He headed the Texas A&M University System Agriculture Program, which encompasses the Texas Agricultural Experiment Station, the Texas Cooperative Extension, the Texas Forest Service, the Texas Veterinary Medical Diagnostic Laboratory, and agricultural colleges at five system universities. He also served as dean of agriculture and life sciences at Texas A&M University, was head of the Department of Agricultural Engineering, and was deputy chancellor for academic and research programs and interim chancellor for the Texas A&M University System. His primary technical interests are in soil and water conservation engineering, small-watershed hydrology, irrigation and drain-

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