Joseph Rotblat's legacy of peace

Rotblat had worked as a scientist toward the creation of an atomic weapon, first in the United Kingdom at the University of Liverpool and then at Los Alamos, N.M. When he learned in late 1944 that Germany would not succeed in developing an atomic bomb, he believed there was no longer reason to continue work on creating a U.S. bomb. Rotblat was the only scientist to leave the Manhattan Project on moral grounds.