Winnipeg Free Press - PRINT EDITION

Pee-powered phones

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The newest source of battery power for your cellphone is both cheap and abundant. Scientists at the University of the West of England in Bristol report microbial fuel cells using human urine can directly power a cellphone battery. As it cascades through a series of fuel cells, hungry bacteria consume it and release electrons, which generate an electrical current. After 24 hours of charging, a Samsung phone stayed alive for 25 minutes -- enough to send texts and make a six-minute call.

-- ScienceNOW

Republished from the Winnipeg Free Press print edition July 27, 2013 D4

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