How Wind & Solar Can Help Solve the Global Water Crisis

We've got to start paying a lot more attention to how much water our various energy sources suck down. Hooking up to energy sources that don't consume too much water will be a top priority. Rina Bohle Zeller of Vestas, the world's largest wind turbine manufacturer, makes the pitch for wind -- and solar, implicitly (but she's not hocking solar wares). Neither power sources actively consume water in order to produce energy. She estimates that the U.S. could save a whopping 4 trillion gallons of water by 2030 if we were to ramp up our wind power to account for 20% of our domestic energy mix.