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Wind power investments - Strong wind profits?

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Gasoline prices have jumped 12 cents in the last two weeks. That's enough to make hardcore V-8 fans take a second look at hybrids. But Goldman Sachs is doing more than just window shopping. The investment bank said today it's buying Zilkha Renewable Energy - a private wind-energy development company. The deal appears to be part of what Goldman says is a plan to play a leading role in the renewable energy business. With us to talk about this is Ann Davis, a senior special writer for the Wall Street Journal...