Energy: With Ahab-like determination, environmentalists have once again blocked oil exploration in the American Arctic. They may just have succeeded in putting the American economy on ice.On Friday, a three-judge U.S. Court of Appeals Court panel in Washington, D.C., struck down the Bush administration's five-year plan for offshore oil and gas leasing off Alaska's northern coast. The plan was vacated, the panel ruled, because of allegedly insufficient environmental review because its "environmental sensitivity rankings are irrational." What is irrational is that despite a more than three-decade long record of environmental sensitivity at Prudhoe Bay and elsewhere, and despite booming polar...