RUBY PURYEAR HEARN (1940– ) graduated from Skidmore College and then attended Yale University, where she received an M.S. and Ph.D. in biophysics. Dr. Hearn has spent most of her professional life on the staff of The Robert Wood Johnson Foundation, the largest health care philanthropy in the United States. In her current position as senior vice president, Dr. Hearn participates in strategic program planning and as the Foundation’s liaison within the non-profit community. Dr. Hearn has had major responsibility for oversight and development of initiatives in maternal, infant, and child health; AIDS; substance abuse; and minority medical education. Dr. Hearn is a fellow of the Yale Corporation and a member of the Institute of Medicine; the Committee on Science, Engineering, and Public Policy of the National Academy of Sciences; and the Science Board of the Food and Drug Administration.