Restrooms are pictured at the biggest marijuana plantation found in Mexico, in San Quintin, about 350 km (220 miles) away from Tijuana, July 13, 2011. Mexican soldiers discovered the plantation in a remote desert surrounded by cactuses, a top army officer said on Thursday. Soldiers patrolling the area found 300 acres (120 hectares) of pot plants being tended by dozens of men on Tuesday, said General Alfonso Duarte. Picture taken July 13, 2011. REUTERS/Jorge Duenes (MEXICO - Tags: SOCIETY CRIME LAW) - RTR2OVR2
In the future, re-charging your smartphone might be as simple as excusing yourself to the restroom.
At least that's what scientist Ioannis Ieropoulos is hoping.
He's a scientist with the Bristol Robotics Laboratory in England.
He's been researching microbial fuel cell technology, that is, turning organic waste like urine into energy.
And Ieropoulos and his colleagues have successfully generated enough oomph to power a phone.
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