Shell said there are a series of contingencies to consider after a U.S. federal decision to reaffirm a lease for the arctic waters off the coast of Alaska. The Department of Interior this week affirmed a 2008 lease sale for exploration in the Chukchi Sea off the coast of Alaska. The decision clears the way for a formal review of exploration plans in the region, which will include an environmental analysis. The lease was tied in up the court system amid complaints about the extent of environmental vetting. Shell, which devoted about $5 billion and more than eight years of work for its arctic oil exploration off Alaska’s coast in the Chukchi and Beaufort seas, said the decision clears the way for a review […]