Taking Charge at Silicon Valley: Clean Tech's New Capital

California's Silicon Valley is mostly known for launching the Internet revolution, but the region has also become the epicenter of the U.S. clean energy industry. In fact, billions of dollars in venture capital funding to clean-energy companies has helped the region through some tough economic times.

Correspondent Lee Patrick Sullivan looks at Silicon Valley's shift toward clean energy, and meets the tech-savvy workers and entrepreneurs who are now helping America take charge of its energy future.