BioEd Online continues with its fine tradition of crafting high quality science education materials with this clutch of materials related to life science in space. This series is sponsored in part by the National Space Biomedical Research Institute (NSBRI) and the resources here include slide sets and streaming video presentations designed for classroom use. One of the key presentations deals with sleep and human performance and it looks into questions such as "How much sleep do people need?" and "Why do adolescents want to stay up late at night and sleep away half the day?" and that's not all, as the site also contains presentations on the effects of radiation and maintaining muscle mass in space.