NOVA examines California’s aggressive pursuit of a sustainable energy future.

Arnold Schwarzenegger is betting on green. He wants to roll California's greenhouse gas emissions back to their 1990 levels, and he's promising Californians that their lifestyles - and their pocketbooks- won't feel the pinch. But is Schwarzenegger gambling with his state's economy? With help from eco-celebrities like Ed Begley, Jr. and Bill Nye "The Science Guy," NOVA examines California's aggressive pursuit of a sustainable energy future. From San Francisco's Luscious Garage, where mechanics create custom plug-in hybrids for customers like Google, to the Tehachapi Valley, where thousands of wind turbines are spinning out electricity, NOVA visits the places where green energy is already becoming a reality. Yet some critics fear that, as the nation struggles through an economic meltdown, the state's new policies are inviting dire consequences. Will California be a role model for the rest of the country or a cautionary tale?