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  1. NOAA confirms 4th global coral bleaching event

  2. World's coral reefs hit by a fourth mass bleaching event, NOAA …

  3. Ocean heat is driving a global coral bleaching event, and it could …

  4. Scientists Predict Most Extensive Coral Bleaching Event on Record …

  5. NOAA Coral Reef Watch Research - National Oceanic and …

  6. Coral reefs around the world are experiencing mass bleaching in …

  7. Satellites watch as 4th global coral bleaching event unfolds (image)

  8. Coral bleaching: Fourth global mass stress episode underway

  9. Coral reefs suffer fourth global bleaching event, NOAA says

  10. Global heating pushes coral reefs towards worst planet-wide …