Vast Oil, Natural Gas Reserves Estimated in Alaska

Some 90 billion barrels of oil and a third of the world's undiscovered natural gas lie beneath an area north of the Arctic Circle, government scientists estimate in the largest-ever survey of the energy resources there. The U.S. Geological Survey, which announced the findings Wednesday, called the region, which includes parts of the United States, Russia and Canada, "the largest unexplored prospective area for petroleum remaining on Earth."