Does Renewable Energy Still Have a Future?

Both John McCain and Barack Obama say that energy independence and global warming demand a shift from fossil fuels to alternative sources of energy.  But the credit crisis is drying up investment and the price of oil is declining.  We look at what that could mean for America’s energy future. Also, President Bush invites leaders of the Group of 20 to a summit on the global financial system, and India’s first expedition in space.