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Scaling up: Joule funded for test-tube biofuel

Startup Joule lands $70 million in private equity to build larger-scale plants that make diesel fuel directly from sunlight, carbon dioxide, and nutrients in solar panel-like bioreactors.

By January 17, 2012

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Hands-on with YouTube's remixing and real-time chat tools

YouTube's new "TestTube" arena highlights cool new experiments like Audio Swap and Streams. Also new: personalize your profile page.

By March 29, 2007