http://d.yimg.com/a/p/ap/20100425/ca...XdT3H1TXmGiA--AP - It could take hours or it could take months to stop a 42,000-gallon-a-day oil leak polluting the Gulf of Mexico at the site of a wrecked drilling platform. Whether the environmental threat grows many times bigger depends on whether the oil company can turn the well completely off.
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