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Fuels of the Future: How Far Down the Road?

Corn-based ethanol, biodiesel, cellulosic ethanol — they're all ways to try to reduce our dependence on oil. But how close are we to growing enough fuel to make a difference? Guests discuss the future of alternative energy and biofuels.


Dan Kammen, co-director, Berkeley Institute of the Environment; professor, Energy and Resources Group at the University of California, Berkeley

Evan Ratliff, journalist; author of "One Molecule Could Cure Our Addiction to Oil," published in Wired Magazine

Tim Appenzeller, executive editor, National Geographic Magazine; edited the article "Green Dreams," published in National Geographic

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