Meet the tiny robot that walks on water, cleans pollution, and never needs to be charged

First presented last month at the IEEE/RSJ International Conference on Intelligent Robots and Systems in Hamburg, Germany, the Row-bot is a essentially a fuel cell powered by electricity that is generated solely by bacteria living inside the device. The beauty of this particular bacteria-powered fuel cell, however, is the means by which the tiny organisms living in its gut generate that electricity...
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