NASA recently announced the winners of their In-Situ Materials Challenge, which asked participants to develop fabrication and construction methods utilizing native, or in-situ, surface materials on the moon and Mars. Taking first place was Dr. Behrokh Khoshnevis, engineer and professor at the University of Southern California, who developed a whole new method of 3D printing. Read more about Dr. Khoshnevis' Selective Separation Sintering (SSS) technology and its implications for space colonization at 3DPrint.com:https://3dprint.com/128375/selective-separation-sintering/