PBS News Hour

Record ocean heat triggers massive coral reef bleaching

Scientists issued a warning due to record-breaking temperatures in 2023 which accelerated the speed of the second-largest mass coral bleaching event across the Atlantic, Pacific and Indian Oceans. Nearly a quarter of all ocean species rely on the reefs. William Brangham discussed the global situation and what’s at stake with Julia Baum, a marine ecologist and coral reefs researcher.

Record ocean heat triggers massive coral reef bleaching

6m

WETA Passport

Stream tens of thousands of hours of your PBS and local favorites with WETA Passport whenever and wherever you want. Catch up on a single episode or binge-watch full seasons before they air on TV.