Guardian: Sections of coral reef in Australia’s Great Barrier Reef have made a “spectacular” recovery from a devastating bleaching event three years ago, marine scientists say. In 2006, high sea temperatures caused severe coral bleaching in the Keppell Islands, in the southern part of the reef — the largest coral reef system in the world. The damaged reefs were then covered by a single species of seaweed which threatened to suffocate the coral and cause further loss. A “lucky …