Dorothy E. Patton’s 24-year tenure with the U.S. Environmental Protection Agency included positions as Director of the Office of Science Policy, Executive Director of the Science Policy Council and Executive Director of the Risk Assessment Forum. In these positions, she was responsible for developing and implementing risk assessment policies and practices, environmental research planning and prioritization, and long-range strategic planning, all in line with Congressional mandates or recommendations from science advisory bodies. Since retiring from EPA in July 2000, Dr. Patton’s has been a consultant with the ILSI Risk Science Institute and has organized workshops for government agencies, professional societies, and other organizations. Dr. Patton began her EPA career as an attorney in EPA’s Office of General Counsel, where she worked on air, pesticides, and toxic substances issues. She holds a B.S. in chemistry from the University of Wisconsin, a Ph.D. in biology from the University of Chicago, and a J.D. from Columbia University School of Law. She is an Adjunct Professor at the Georgetown University Public Policy Institute, with other teaching experience as an assistant professor (biology) at York College of the City University of New York, and leading training workshops for risk assessment professionals.