On August 6, 1945, the course of world history changed forever with the dropping of an atomic bomb on the Japanese city of Hiroshima. Over half a century later, countries around the globe are still dealing with the lasting effects of this decision. Some of these are physical reminders of the chaos and destruction. Elsewhere, politicians, diplomats, and ordinary citizens continue to grapple with the issue of nuclear weapons and warfare. Through photographs, stories, and documents, this in-depth exploration of the order to drop the bomb offers a detailed look at the events that kicked off the nuclear age.