TED Donald Sadoway's Liquid Battery

At MIT, Donald Sadoway has been working on a grid-size battery system that stores energy using a three-layer liquid-metal core. Critical for energy delivery to the grid all the time, day and night, even when the wind's not blowing and the sun's not shining.

“If we're going to get this country out of the current energy situation, we can't just conserve our way out. We can't just drill our way out. We can't bomb our way out. We're going to do it the old-fashioned, American way. We're going to invent our way out, working together.”