Listen up, space freaks. NASA will give you a free flight in zero-gravity at the Johnson Space Center in Houston if you can come up with technology that may have potential use in their FAST (Facilitated Access to the Space Environment for Technology) projects. Individuals, schools, government agencies and U.S. companies are welcome to apply. Get your proposal in by March 20 and you could be one of the 20 selected. Oh, and remember to bring a barf bag.