b'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.]'