Bernard L. Cohen is Professor-Emeritus of Physics and Astronomy and of Environmental and Occupational Health at University of Pittsburgh. He has authored six books, over 300 papers in scientific journals, and more than seventy articles in non-technical journals. He has presented invited lectures in the United States, Canada, Asia, Europe and South America. His awards include the American Physical Society Bonner Prize and the Health Physics Society Distinguished Scientific Achievement Award. He has been elected Chairman of the Division of Nuclear Physics of the American Physical Society, and Chairman of the Division of Environmental Sciences of the American Nuclear Society.