Given the limits of today's medical technology, a three-year trip to Mars would place astronauts in grave danger. Thus, NASA has divided its attention between outer and inner space, aiming to create self-sufficient nanomedicine by the year 2020. This program studies health care research driven by that goal. With exciting animation sequences and conversations with top-level experts, the video introduces microbivores, respirocytes, dendrimers, and other innovations designed to search out and destroy diseases in the earliest stages. Interviews feature NASA scientists Dr. Kathie Olsen and John Hines; nanotech pioneers Dr. Ralph Merkle and Dr. Carlo Montemagno; and cancer expert Dr. Carol Dahl.