For Rob Nail, Feb. 27 was a bonanza of opportunity, CNET reports. Over dinner that night in building 20 at the NASA Ames Research Center here, Nail found himself discussing 3D printing and housing with X Prize CEO Peter Diamandis. Already, Nail had been considering buying some farming land in Northern California and had been interested in the nascent concept of 3D printed buildings. He told Diamandis that he wanted to try that on the land. “He says,” Nail recalled, “I want to make this introduction,” and grabbed Nail, pulling him a few tables over to the side where the two put their heads together with one of the founders of a start-up that recently began working on building 3D printed housing for developing nations.