The U.S. should immediately begin a push to exploit its enormous trove of oil in the Arctic waters off of Alaska, or risk a renewed reliance on imported oil in the future, an Energy Department advisory council says in a study to be released Friday. The U.S. has drastically cut imports and transformed itself into the world’s biggest producer of oil and natural gas by tapping huge reserves in shale rock formations. But the government predicts that the shale boom won’t last much beyond the next decade. In order for the U.S. to keep domestic production high and imports low, oil companies should start probing the Artic now because it takes 10 to 30 years of preparation and drilling to bring oil to market, according to a draft of the study’s executive summary obtained by the Associated Press. “To remain globally competitive and to be positioned […]