Canadian inventor Louis Michaud has created the Atmospheric Vortex Engine, which harnesses the energy of tornados to produce clean energy, and energy companies Dominion and FuelCell Energy Inc. announced plans to build the largest fuel cell power plant in North America.

ENGADGET: Inhabitat's Week in Green: invisibility cloak, a Hobbit House and a portable washing machine

Predicting a breakthrough in switchgrass-based ethanol technology in 2007, the Bush administration mandated that cellulosic, or plant-cell based, ethanol production for American autos increase to 500 million gallons by 2012 and a staggering 16 billion by 2022.

WSJ: Henry Payne: The Motor City Roars Out of Washington's Shadow