Turning Coffee Grounds into Clean Energy
If we're to believe the Dunkin' Donuts marketing slogan, all of America is already powered by coffee. If only that were as true as it felt. While many of us may get most of our morning boost from the good old grounds, America itself still runs on nasty, earth-destroying sludge. Those trucks that transport your beans to your local grocery store burn up gas on a daily basis, and chances are the electricity that powers your coffee maker isn't even sourced from an environmentally friendly place. Most of our power is not so green. But what if we could get actual--not just metaphorical--energy from the same coffee we drink each morning?