Self-charging moisture battery promises sweat-powered wearables
Half of the solar energy that bathes the Earth in warmth goes into a single process, according to some researchers: evaporating the water that covers some 71 percent of our fragile blue marble. Australian company Strategic Elements wants that energy back, and it's working with the University of New South Wales and the CSIRO to develop a flexible, self-charging battery technology that harvests electrical energy from moisture in the air to directly power devices without ever needing to plug them in. The company's shares…