August 1, 2018

As part of the State of the Climate in 2017 report, experts describe a record three-year-long episode of mass coral bleaching at tropical reefs worldwide. Previous global bleaching events required the presence of El Niño, but the devastating 2014–2017 event began before El Niño emerged and continued long after it ended—implicating human-caused global warming in the mass die offs.

The U.S. Coral Reef Task Force will hold its biannual meeting on April 4 in Washington, D.C. Key topics will include lessons learned from storm recovery efforts in the Pacific and Caribbean,...

Coral reefs in remote, uninhabited areas of the American Pacific are generally in good condition, while reefs in the regions that are closer to human populations show more signs of impacts,...