EcoWatch: The Obama administration inched a little closer to disaster yesterday when it issued almost-but-not-quite final approval to Royal Dutch Shell to drill in the Chukchi Sea this summer. Because Shells capping stack (a critical piece of emergency response equipment) is currently on its way to Portland, Oregon, aboard a damaged icebreaker that requires repairs, the oil company is allowed to drill only part way into the seafloorstopping short of where the oil is. If and when the capping stack gets to...