The Alternative Crowd: Unusual Renewable Energies
July 17, 2012 at 09:13 AM EDT
Considering their popularity, "alternative energy" is almost a misnomer for increasingly mainstream energy sources like wind, solar and biofuels. Some alternative energies still fit the title, however. These renewables, which will principally provide power for small devices, use unusual sources to create their juice, including vibrations, clothing, viruses, water — even the movements of the human body.