Research shows that 77% of the world’s coral reefs are affected by bleaching, mainly due to warming ocean waters amid human-caused climate change. It’s the largest and fourth mass global bleaching on record. (AP Video)

Fourth mass coral bleaching prompts UN emergency session at Colombia biodiversity summit

Research shows that 77% of the world’s coral reefs are affected by bleaching, mainly due to warming ocean waters amid human-caused climate change. It’s the largest and fourth mass global bleaching on record. (AP Video)