"Researchers at UC Berkeley are perfecting microscopic fibers that can produce electricity from simple body motions such as bending, stretching and twisting," reports the L.A. Times. "Researchers are envisioning hikers powering up their digital cameras while trekking up a mountain or a jogger charging up her cellphone in mid-run. The Pentagon is hot for it too: Soldiers would no longer have to carry heavy batteries to power their gear."