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Nature 441, 810-811 (15 June 2006) | doi:10.1038/441810a; Published online 14 June 2006

Burst of energy

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More and more venture capitalists are backing clean technology in the United States, but will it take off? Virginia Gewin reports.

For years, venture capitalists spurned Lee Lynd's plans to make lucrative ethanol out of agricultural waste. But in March, that suddenly changed.