3D printers could fabricate tools out of moon dust

One of the challenges of putting a colony on the moon is the need for stuff: building materials, food, and tools. Fortunately, researchers at Washington State University are working on a project that would help lunar colonists make some of those tools right at home: developing 3D printers that can print tools out of… » 12/01/12 11:00am 12/01/12 11:00am