Green news harvest: Solar's 'carbon payback'

A study finds that solar panels do, on balance, reduce fossil fuel use. Also, the energy climate bill lumbers forward in the House.

A sampling of green-tech news with quick commentary.

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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