State University/Department of Energy Plant Research Laboratory and Department of Biochemistry at Michigan State. Her research focuses on the control of mRNA stability and ribonuclease regulation and function in higher plants. She is past cochair of the North American Arabidopsis Steering Committee and is a member of the Board of Directors of the International Society for Plant Molecular Biology. She has organized "Choices Day" at the Plant Research Laboratory and has contributed to workshops at American Society of Plant Physiologists meetings to inform students about the spectrum of careers in science.

Sherrie L. Hans was a graduate student in the Department of Biochemistry at the University of California, San Francisco until the summer of 1996, when she received her PhD. She was supported by a National Science Foundation graduate fellowship during the first 3 years of her graduate career. Currently, she is a program officer for biomedical research policy at the Pew Charitable Trusts in Philadelphia.

Bruce R. Levin is professor of biology and director of the Graduate Program in Population Biology, Ecology and Evolution at Emory University. Dr. Levin's current research includes theoretical and experimental studies of the population biology and evolution of bacteria and infectious disease. He received his PhD in Genetics from the University of Michigan in 1967. He has taught at Brown University and the University of Massachusetts.

Arthur Kelman is a University Distinguished Scholar in the Department of Plant Pathology, North Carolina State University, and Emeritus Wisconsin Alumni Research Foundation Professor of Plant Pathology and Bacteriology, University of Wisconsin-Madison. His research has been in the area of mechanisms of pathogenesis of bacterial plant pathogens and the nature of disease resistance in plants. He has served as chairman of the Board on Basic Biology, on a number of other committees of the National Research Council, and as chief scientist of the National Research Initiative Competitive Research Grants Program of the US Department of Agriculture. He is a member of the National Academy of Sciences and the American Academy of the Arts and Sciences.

J. Richard McIntosh is professor of cell biology at the University of Colorado, Boulder and a research professor of the American Cancer Society. His principal research interest is the mechanisms by which cells organize and segregate their chromosomes in preparation for cell division. He is also principal investigator of the Laboratory for Three-Dimensional Fine Structure, a national research resource that is developing new technologies for the study of cellular architecture. He has taught cell biology at the graduate and undergraduate levels.

Henry W. Riecken is the Boyer Professor emeritus of Behavioral Sciences at the School of Medicine of the University of Pennsylvania. He is a psychologist who formerly headed the Divisions of Scientific Personnel and Education at the National Science Foundation. He was Chairman of the National Research Council Committee on National Needs for Biomedical and Behavioral Research Personnel. He is a founding member of the Institute of Medicine

Paula E. Stephan is associate dean and professor of economics, School of Policy Studies, Georgia State University. She is a labor economist by training and her recent research focuses on the economics of science and innovation. She has also studied the relationship of age, career stage, and birth origin to productivity. She is the author of over 50 books and papers. She has served as a consultant to a number of organizations and as a visiting scholar at the Wissenschaftszentrum Berlin für Sozialforschung, Berlin, Germany.

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