Does U.S. shale mean cheap global oil by 2020?

Does the rise of U.S. shale oil mean fuel buyers can look forward to a multi-year period of crude price decline? Or is oil destined for new record highs above $150 a barrel? The question is dividing energy analysts who are split on whether or not shale and other predominantly North American “unco…

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Does U.S. shale mean cheap global oil by 2020?