On December 30, 2012, a tugboat engineer named Craig Matthews threw a grappling hook and caught a runaway drill rig in the middle of a severe storm in the Gulf of Alaska. Late on New Year’s Eve, he was ordered to save his own life and that of his tug’s crew by cutting it loose. The rig’s name was the Kulluk. It belonged to Royal Dutch Shell. Designed for the Arctic, it was the biggest piece in the biggest oil play by what in 2012 was the world’s biggest company, and it was about . . .