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MTorrice writes "Scientists dream of materials that could someday allow people to charge cell phones simply through the energy created as they walk around. Researchers at Massachusetts Institute of Technology developed a polymeric sheet that curls and flips when set on a moist surface. The team hopes the material’s somersaults will someday power personal electronics. In a video, the scientists show off how the material rolls around." Link to Original Source
Porsche: there simply is no substitute.
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