Oh Pure and Radiant Heart plucks the three scientists who were key to the invention of the atom bomb--Oppenheimer, Leo Szilard and Enrico Fermi--as they watch history's first mushroom cloud rise over the desert on July 16th, 1945 . . . and places them down in modern-day Santa Fe One by one, the scientists are spotted by a shy librarian who becomes convinced of their authenticity. Entranced, bewildered, overwhelmed by their significance...