System can 3-D print an entire building

The list of materials that can be produced by 3-D printing has grown to include not just plastics but also metal, glass, and even food. Now, MIT researchers are expanding the list further, with the design of a system that can 3-D print the basic structure of an entire building. (Learn more: ) Watch more videos from MIT: The Massachusetts Institute of Technology is an independent, coeducational,