Leading American psychiatrist and author of several books. He is distinguished professor emeritus of psychiatry and psychology at the City University of New York. He is the recipient of numerous national and international awards and honorary degrees. His books include Death in Life: Survivors of Hiroshima, for which he received the National Book Award; The Nazi Doctors: Medical Killing and the Psychology of Genocide; and most recently, Witness to an Extreme Century: A Memoir. He is currently working on a book comparing the nuclear threat to the threat posed by climate change.