Featured: MELISSA: Studying How To turn Waste Into Food, Oxygen and Water

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From: Kirk
When the first humans go to Mars, they will need to pack very carefully. Everything for a three-year trip will need to fit into one small spacecraft. Once on the journey, the astronauts will throw nothing away, including human waste. Precisely how to turn such waste into food, oxygen and water is the subject of an ESA project, which is building a small pilot plant outside Barcelona, Spain.
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