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3-D printing seen as key to sustaining human colony on Mars NBC News Science

Mars pioneers could use 3-D printing to create a sustainable human colony on the Red Planet, advocates say.
A team of scientists is developing a plan to use 3-D printing to build locally made houses and food on the Martian surface. These resources would support the lives of people leaving the confines of Earth for the Red Planet.
To make things out of Martian raw materials, however, the first arrivals will need to bring some equipment. Once settlers put industrial cutters and 3-D printers in place, subsequent visitors could start making a variety of objects needed for shelters, greenhouses and even parts for new 3-D printers built on the Red Planet, said Bruce Mackenzie, founder of the Mars Foundation, an organization that aims to build and operate the first permanent settlement on Mars.