Coral bleaching on Australia’s Great Barrier Reef reaches ‘catastrophic’ levels, study finds

Record-breaking ocean heat has taken a devastating toll on one of the world’s greatest natural wonders, with coral bleaching on Australia’s Great Barrier Reef reaching “catastrophic” levels, a new study has found.

​ Record-breaking ocean heat has taken a devastating toll on one of the world’s greatest natural wonders, with coral bleaching on Australia’s Great Barrier Reef reaching “catastrophic” levels, a new study has found. Read More Breaking News, Latest News and Videos | CNN