Studies group, where flight designs for Discovery and Mars missions are conceived and developed. Dr. Clark has over 55 publications and 90 reports, abstracts and presentations in instrumentation, planetary missions, radiation, space science, planetary geochemistry, exo-biology, and other fields of research and development. Dr. Clark has a B.S. in physics from the University of Oklahoma, an M.A. in physics from the University of California, and a Ph.D. in biophysics from Columbia University.

VON R. ESHLEMAN (NAE) is a professor emeritus at Stanford University. His main publications relate to electromagnetic remote sensing, with particular emphasis on spacecraft radio and radar systems. Dr. Eshleman has authored or coauthored approximately 175 publications. He has been a team leader or member for many NASA exploration spacecraft, including Mariner, Pioneer, Viking, Voyager, and Galileo. The missions were designed to study planetary atmospheres, iono-spheres, magnetospheres, surfaces, rings, and moons of the solar system. He was also a member of the advisory board for NASA's lunar and planetary missions. Dr. Eshleman received several distinguished alumni awards from George Washington University and Stanford, as well as several NASA medals for excep-tional scientific achievement as a result of his work on the atmosphere of Mars in 1965 and the atmospheres of Jupiter, Saturn, and Titan in 1981. He is also a found-ing member of the Planetary Society.

JOHN HAAS is group leader for the New Technologies Group in Applied Research Associates' New England Division, located in South Royalton, Vermont. Dr. Haas is currently working on the development of sensors and analytical methodologies for process, environmental, biotechnical, and geotechnical monitoring applications, including planetary exploration. Dr. Haas received his Ph.D. in analytical chemistry from the University of Massachusetts and has been principal investigator on nearly two dozen research programs in the areas of field analytical chemistry instrumentation, detection of chemicals of concern to human health, sensor development, geochemistry/ geophysics, in situ sampling and measurement techniques, remote fiber-optic sensing, laser spectroscopy, and miniature devices. Among his achievements are the invention of various Raman, fluorescence, absor-bance, and refractive index fiber-optic probes, a miniature fluorescence sensor, and a unique Raman spectrograph. Dr. Haas has also developed an array of small chemical, radiation, and geophysical sensors and samplers for use in the cone penetrometer, a subsurface geophysical and geochemical characterization tool. Several of his current research projects are directed at the detection of hazardous chemicals, including biological endotoxins, metallocyanides, perchlorate, and radionuclides.

JON B. REID is a professor at the University of Cincinnati Medical College's Department of Environmental Health. Dr. Reid has over 20 years of experience in toxicology and human health risk. He also works for the National Council on Aging and is assigned to the Environmental Protection Agency's National Center for Environmental Assessment, where his work includes preparation of a methodology for developing a comprehensive pathogen risk assessment procedure. His other consulting activities include research in exposure and risk from chemicals in the environment and the workplace.

JONATHAN RICHMOND is the director of the Office of Health and Safety at the Centers for Disease Control and Prevention in Atlanta, Georgia, and is an international authority on biosafety and laboratory containment design. Dr. Richmond was trained as a geneticist, worked for 10 years as a research virologist, and has been involved in the field of biosafety for the past 25 years. He has authored many scientific publications in microbiology, chaired many national symposia, edited numerous books, and is an international consultant to ministries of health on laboratory safety and training. He also serves as a director of a World Health Organization collaborating center on applied biosafety.

RONALD E. TURNER is a principal scientist at ANSER Corporation. Dr. Turner has extensive experience in radiation effects on humans in space; specifically, he has more than 20 years of experience in space systems analysis, space physics, orbital mechanics, remote sensing, and nuclear and particle physics. His recent research has included risk management strategies for solar particle events during human missions to the Moon or Mars. He has been an invited participant at NASA workshops looking at space radiation/biology missions, life science mission requirements for Mars 2001 and 2003, and the impact of solar particle events on the design of human missions.

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