Houston Chronicle: An undated handout photo received on May 30, 2016, shows dying coral colonised by seaweed at Lizard Island during the current bleaching event on the Great Barrier Reef. At least 35 percent of corals in the northern and central regions of Australia's Great Barrier Reef are dead or dying from a mass bleaching event, scientists said on May 30, 2016. The assessment was made after months of aerial and underwater surveys after the worst bleaching in recorded history first became evident in March as sea...