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 ...

Biofuel from human urine

Micro-algae can grow on undiluted human urine. This offers opportunities for new water purification methods and perhaps even for converting urine into usable chemical substances and biofuels.

Scientists power mobile phone using urine

British scientists on Tuesday reported they had harnessed the power of urine and were able to charge a mobile phone with enough electricity to send texts and surf the internet.

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