1366 Technologies, a company based in Lexington, MA, shows how a new manufacturing process can make silicon solar cells 80 percent cheaper. The company dreams that within 10 years they will be able to improve the technology so as the solar cells built by them to compete with coal in price.

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The hottest thing in alternative energy right now is the Bloom Box. That clever, standalone fuel cell that its creators say could erase the need for grid-tied energy systems, power lines and even utilities. Since its revelation on 60 Minutes last month, followed by a much-hyped presentation at eBay headquarters in Silicon Valley, the Bloom [...]

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