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Joseph Rotblat dies

Joseph Rotblat, the only physicist to resign from the Manhattan Project, has died at the age of 96. A nuclear physicist by training, he later changed fields to medical physics and was one of the founders of the Pugwash peace movement in 1957. Rotblat and Pugwash shared the Nobel Peace Prize in 1995 "for their efforts to diminish the part played by nuclear arms in international politics and, in the longer run, to eliminate such arms.