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America's Secret Space Heroes:

These Astronauts Drink Recycled Urine to Stay Hydrated

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These Astronauts Drink Recycled Urine to Stay Hydrated

Short | 01:45

Astronauts themselves are important sources of water in outer space. With the help of a special centrifuge, their urine is distilled, then processed to provide clean drinking water.

More About This episode

It began as an audacious idea: to establish a permanent human presence in the most hostile environment known to man -- space. It's a dream that would bring together two former Cold War enemies and lead to the most expensive structure ever built. Discover the inside story of the International Space Station. See how NASA engineers triumphed over decades of seemingly insurmountable obstacles to develop Skylab, Space Station Freedom, and finally the International Space Station.

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