The Arctic may hold 90 billion barrels of oil, more than all the known reserves of Nigeria, Kazakhstan and Mexico combined, and enough to supply U.S. demand for 12 years, the U.S. Geological Survey said.
One-third of the undiscovered oil is in Alaskan territory, the agency found in a study released today. By contrast, a geologic formation beneath the North Pole claimed by Russian scientists last year probably holds just 1.2 percent of the Arctic's crude, the U.S. report showed.
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The review, the culmination of four years of study, is one of the most ambitious attempts to assess the Arctic’s petroleum potential. One of its main findings is that natural gas is three times as abundant as...