Recycling astronaut urine for energy and drinking water

On the less glamorous side of space exploration, there's the more practical problem of waste—in particular, what to do with astronaut pee. But rather than ejecting it into space, scientists are developing a new technique that can turn this waste burden into a boon by converting it into fuel and much-needed drinking water. Their report, which could also inspire new ways to treat municipal wastewater, appears in the journal ACS Sustainable Chemistry & Engineering.

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