Season 38 Episode 9 | 53m 10s
Are we finally on the brink of a clean energy revolution?
Aired: 04/19/11Video has closed captioning.
Problems Playing Video?
Funding for NOVA is provided by David H. Koch, the Corporation for Public Broadcasting and PBS viewers. Original funding provided by the David H. Koch Fund for Science, HHMI, the Kendeda Fund, the Earth Science program at NASA, the Millicent and Eugene Bell Foundation, Michael and Roxanne Zak, the Corporation for Public Broadcasting, and PBS Stations.