What qualifications have you got? aspirin and ibuprofen crossword clue Once subsidies are removed, shale oil is anyway far from cheap, not least because it requires the continuous drilling of small wells, rather than the long exploitation of big wells. So constant — and costly — drilling is needed just to maintain shale output, let alone increase it. Let’s not kid ourselves, then, that shale oil will bring the Western world “energy independence” or usher in an era of cheap energy. It won’t.
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