Phil and Stephen discuss the role that alternative energy sources will play in shaping the future.

Topics:

Unlocking the secret of how green plants efficiently split water to make hydrogen and oxygen

Development of a smart utility grid

Will the big contest for alternative fuels be between alcohol-based fuels and compressed natural gas?

Blacklight power--anything to it? [Nine years later, apparently not. ]

[This show first aired October 28 2008.]