 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.