'Wearable microgrid' uses the human body to sustainably power small gadgets

Nanoengineers have developed a 'wearable microgrid' that harvests and stores energy from the human body to power small electronics. It consists of three main parts: sweat-powered biofuel cells, motion-powered devices called triboelectric generators, and energy-storing supercapacitors. All parts are flexible, washable and can be screen printed onto clothing.