Coral reefs pass tipping point for dieback, report finds

World's coral reefs have reached a tipping point, risking mass dieback, according to a new report. The report, by 160 scientists, states warm water coral reefs are the first of 25 vulnerable Earth systems to pass a median threshold for dieback, occurring at 1.2 degrees Celsius of global warming. This development impacts hundreds of millions dependent on reefs, with scientists urging urgent global action on climate drivers to prevent irreversible changes.