Phil and Stephen discuss the role that alternative energy sources will play in shaping the future.\n\nTopics:\n\nUnlocking the secret of how green plants efficiently split water to make hydrogen and oxygen\n\nDevelopment of a smart utility grid\n\nWill the big contest for alternative fuels be between alcohol-based fuels and compressed natural gas?\n\nBlacklight power--anything to it? [Nine years later, apparently not. ]\n\n[This show first aired October 28 2008.]