The Great Barrier Reef in Australia is turning white, and it's not a good sign. Higher water temperatures from climate change are leading to "coral bleaching," which makes coral vulnerable to ...

An aerial view of Vlassof Cay in the Great Barrier Reef, Nov. 14, 2012 in Cairns, Australia. Credit: Mark Kolbe/Getty Images The bad ... which turn coral white or pale and make them vulnerable ...