Engineering Center, Desert Research Institute. She earned her Sc.D. in environmental science from Harvard University. She has been a major collaborator in more than 40 air quality studies and is currently co-principal investigator on several studies including the evaluation of aerosol measurement methods, sampling strategies, and data bases. She authored the Air & Waste Management Association's 1995 annual critical review on aerosol measurement methods and has over 100 peer-reviewed publications. She serves as chair of the Air & Waste Management Association's EM-2 Receptor Source Apportionment Technical Committee and as vice-chair of that organization's Measurement Division. She also serves as chair of the Metals 1 Subcommittee of the Intersociety Committee for Methods of Air Sampling and Analysis. Dr. Chow was Technical Program Chair for the Air and Waste Management Association's International Symposium on ''PM2.5: A Fine Particle Standard".
ROBERT E. FORSTER, The University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.
Robert Forster is Isaac Ott Professor Emeritus in the Department of Physiology at the University of Pennsylvania School of Medicine. He received his M.D. from the University of Pennsylvania, is a former chairman of the department of physiology at the University of Pennsylvania, past-president of the American Physiological Society, and was awarded a Von Humboldt Prize in 1993. Dr. Forster was elected to the National Academy of Sciences in 1973 and has served as chair of NAS Section 23 (Physiology and Pharmacology) and as a member of several NRC committees.
DANIEL S. GREENBAUM, Health Effects Institute, Cambridge, Massachusetts.
Daniel S. Greenbaum is president and chief executive officer of the Health Effects Institute, an independent research institute funded jointly by government and industry to provide impartial and relevant research on the health effects of air pollution. He earned his Masters of City Planning from the Massachusetts Institute of Technology. At the