The Great Barrier Reef is under threat from climate change | Video
A La Nina cycle should have meant relief for Australia's Great Barrier Reef this year. Instead, another major coral bleaching event occurred - and the reef's survival is now hanging by a thread. Here's what could change its trajectory.
A La Nina cycle should have meant relief for Australia's Great Barrier Reef this year. Instead, another major coral bleaching event occurred - and the reef's survival is now hanging by a thread. Here's what could change its trajectory.