Kai Bird and Martin Sherwin wrote a book about the father of what?
J. Robert Oppenheimer:  Oppenheimer was the wartime head of the Los Alamos Laboratory and is among those who are credited with being the "father of the atomic bomb" for their role in the Manhattan Project, the World War II undertaking that developed the first nuclear weapons used in the atomic bombings of Hiroshima and Nagasaki.
i don't know