Nuclear research ranges from well-known applications, such as bombs and reactors, to little-known uses in medicine, food preparation, and radiation detection. It’s also spawned ancillary technologies to store nuclear waste and clean up accidents. Despite the risk of use and abuse for destructive purposes, many scientists remain optimistic about what’s next for the atom. In an explosive hour, we explore the atom in war and peace, and the latest in nuclear power generation, safety, and security.