Watch a 3D printer make a pizza

A prototype of a 3D printer that makes pizza showed up at the SXSW Eco conference in Austin this week. The pizza isn’t quite at the stage where it can make a pizza from scratch, but it is capable of extruding dough, sauce and cheese and in a pizza-like shape and then cooking it. NASA is interested in the technology, which could allow astronauts to choose from a greater variety of meals and cut down on waste.