Sometimes the human race knows the exact moment when it has entered a new age. July 16, 2012, is the 67th anniversary of the first atomic bomb test. This was one of those times. The test took place in the early morning in the desert near Alamogordo, NM, and the blast shook windows miles and miles away.
J. Robert Oppenheimer in this video remembered the significance of the moment: "Now, I am become Death, the destroyer of worlds."