Atomic scientist J. Robert Oppenheimer speaks about the possibility of killing 40 million people with a nuclear bomb and the need for international collaboration.Oppenheimer in suit and famous hat with General Leslie Groves in the New Mexico dessert testing first atomic device on July 16, 1945. Bomb test, mushroom cloud. Narrator quotes Oppenheimer’s famous quote from the Bhagavad Gita “Now I am become death, the destroyer of worlds.”Another separate clip of Oppenheimer in New Mexico desert test site with scientists from the Manhattan Project.