Barry S. Levy, M.D., M.P.H., is a physician and epidemiologist who has edited and written 22 previous books on the public health consequences of social injustice, war and terrorism, occupational and environmental health, climate change, and related issues, and has written more than 250 journal articles and book chapters on these subjects. He is an Adjunct Professor of Public Health at Tufts University School of Medicine. He previously worked as a CDC epidemiologist, a University of Massachusetts Medical School professor, and director of global health programs and projects. He is a past president of the American Public Health Association and a recipient of its Sedgwick Memorial Medal.