Dr. James E. Hansen, director of NASA's Goddard Institute for Space Studies, is one of the nation's leading climate scientists and author of Storms of My Grandchildren: The Truth about the Coming Climate Catastrophe and Our Last Chance to Save Humanity. Topics covered during this lecture include: how politicians have failed to connect policy with climate change science, cap-and-trade shortcomings, why coal must be phased out, and the importance of limiting atmospheric carbon dioxide to 350 parts per million. 2/5/10.

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