recycling urine, Tag

Astronauts’ pee already gets recycled into water on space missions, but now NASA has found a way to transform their urine into fuel. Scientists have devised a process called forward osmosis that extracts ammonia from the...

Photo of green roof via Shutterstock The idea of someone sprinkling urine on building rooftops sounds like a major health hazard, but that's just what Amsterdam's water utility, Waternet, recently proposed...