How urine will get us to Mars

A new recycling system turns pee into drinking water and energy

By Erika Engelhaupt, 15:32 PM April 11, 2014

Every day, you flush a liter or two of urine down the toilet. Unless you live in one of the dry places considering toilet-to-tap systems, you probably never consider drinking it.

But if humans are ever going to get to Mars, we’re going to get there drinking our own pee. Now scientists have built a recycling system that can turn astronauts’ urine into both clean drinking water and energy. That combination could be an important step in making long-distance space travel viable.

The International S...

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