It's become obvious over the last several years that NASA loves a good contest. The agency is enthusiastic about crowdsourcing ideas and inventions from the general public through design challenges, and those design challenges have led to everything from tools for space to entirely new 3D printing technologies. NASA has worked with multiple partners to develop and launch these challenges, and one of its most frequent partners has been Freelancer.com. The two agencies have worked together on 29 contests, soliciting over 6,800 contest entries from 123 countries. Now, the partners are introducing three brand new challenges, one of which is centered on the International Space Station-based 3D printer and filament recycler known as the Refabricator. Learn more at 3DPrint.com: http://3dprint.com/182154/nasa-freel...gn-challenges/