Global coral bleaching event is now the world's largest on record

The ongoing fourth global coral bleaching event is officially the largest on record and still growing, according to NOAA. Why it matters: Coral reefs act as nurseries for vital global fisheries. Their health is vital for sustaining diverse coastal marine species populations, drawing tourists and even reducing the impacts of powerful storms. Widespread coral bleaching results in sick reefs that are more vulnerable to illness, water pollution and...