‪Unplugged bicycle-powered pump designed to deliver water to remote areas‬
http://www.princeton.edu/engineering...Ed Weng, who graduated from Princeton in 2010 with a degree in electrical engineering, shot footage as he and fellow students field-tested Weng's "unplugged water pump" -- powered by a bamboo bicycle -- in Kenya. Weng developed the pump, which was part of his senior thesis work, to provide clean drinking water to remote areas.

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