Human waste is rarely as interesting — or as versatile — as it is in space. Earlier this there was a NASA-funded research project which aims to turn astronaut excrement into an edible paste that is high in both protein and fat. Now, researchers from the University of Calgary have developed a way to use space poop as a crucial ingredient for 3D printing in the stars. Wow! This has great ramifications for earth as well as space. The process could theoretically provide astronauts with an abundant source of material for making whatever plastic tools they need during their voyage. This could include possible future missions to Mars.
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