Microbial fuel cells, as they're called, have been around for more than 100 years. They work a little like a battery, with an anode, cathode and electrolyte – but rather than drawing electricity from ...

Batteries hold toxic, flammable chemicals that leach into the ground, are fraught with conflict-filled supply chains and contribute to the ever-growing problem of electronic waste. George Wells, ...

The continual attraction of energy harvesting is well known. Who can resist possibly getting something—usually electricity—for nothing, or almost nothing? Yet the reality is that in many cases, the ...