Washington Post: The longest-lasting known global coral bleaching event has caused vast damage so far — including large swaths of dead corals in the northern sector of the iconic Great Barrier Reef.
Now federal scientists expect the coral bleaching to continue across key reefs in U.S. states and territories this summer, in some cases for a third straight year — a likelihood the scientists call “unprecedented.”
“All Northern Hemisphere U.S.-coral reefs are on alert for coral bleaching this year,” said Mark…