Is the future of food 3-D printing? NASA seems to think so. The organization recently gave an engineer named Anjan Contractor a grant for $125,000 to develop his 3-D food printer. The device uses combinations of powders—which are actually just condensed molecules containing the building blocks of food—to create a selection of menu items through the 3-D printing process. Because the powders have a shelf life of about 30 years, they’d be the perfect, nutritious accompaniment on a really long road trip—like one to Mars. But Contractor and NASA also see larger implications for the 3-D printed pizzas. If the technology can be perfected and produce food on a large scale, it could help feed humanity through an abundant amount of molecule powders that produce almost no waste …