Sewage The New Fuel?
If only we could think up ways to make use of all our sewage and everything else we throw away.
If we’re ever to build a society of autonomous, fully-functional robots that don’t need us humans to supervise and control their every move, we’re going to have to teach them to fuel themselves. The Ecobot III brings us a step closer to living in a world of self-feeding robots that will (probably) eventually overthrow the reigning humans and take over Earth. It’s a small robot developed at the Bristol Robotics Lab in the UK that takes meals and sips of water, extracts energy from the food, and expels waste through an artificial digestive system.