Last week we had lab-grown burgers; this week it's powdered pizza. NASA's gotten in on the synthesized food action by awarding a $125,000 grant to Anjan Contractor, head of Systems & Materials Research Corporation, to develop a 3D food printer. The first device Contractor plans to build under the six-month grant is based on RepRap's open-source hardware and will be designed to print a pizza comprised of three layers of nutritional powders mixed with wat