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Nature 443, 17 (7 September 2006) | doi:10.1038/443017b; Published online 6 September 2006

Open Innovation Challenges

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Market watch

Alexandra Witze

Clean-energy stocks have continued to drop over the past two months, although analysts say the plunge is a natural stock-market correction rather than any sign that the industry is in trouble.Companies that specialize in solar, wind, biofuels and other clean energy technologies continue to thrive overall — even though the WilderHill Clean Energy Index (ECO on the American Stock Exchange) has dropped markedly since May.

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