Green news harvest: Floating wind turbines in Italy, carbon burial at sea

Combining thin-film solar cells with concentrating optics; Shell boosts stake in cellulosic ethanol firm Iogen; an algae biodiesel plant moves ahead at a power plant in Hawaii; and more.

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Your Black Friday shopping survival guide

Ready to battle for deals? Bridget Carey helps you plan your strategy with tips on smartphone apps, where to find the best deals, and when to avoid the stores.

by Bridget Carey