Or that oil we know about is hard to or not cost effective to extract. Wasn't the oil sands in this category 30 years ago?
Or that oil we know about is hard to or not cost effective to extract. Wasn't the oil sands in this category 30 years ago?
Or that oil we know about is hard to or not cost effective to extract. Wasn't the oil sands in this category 30 years ago?
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