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As global heating makes coral bleaching a regular event, scientists are urgently seeking ways to help the world’s biggest reef survive...When coral scientist Dr Zoe Richards left the Great Barrier Reef’s Lizard Island in late January, she was feeling optimistic. Richards is a taxonomist. Since 2011 she has recorded and monitored 245 coral species at 14 locations around the island’s research station, about 270km north of Cairns.