Courier-Mail: CORALS on the Great Barrier Reef are growing slower than at any time in at least 400 years and leading scientists are blaming climate change. As a major study is being published in the US, scientists fear the reef is showing signs of mass coral bleaching, last seen in 2002. Glenn De’ath, co-author of the research published in Science magazine, said the corals would stop growing altogether by 2050 if the trend identified in the study continued. “When you disturb an …