The global die-off of coral reefs marks a critical shift in Earth's climate system, with significant environmental and economic consequences.
A recent marine heat wave affected 80% of the world's warm water coral reefs in 2024, causing the worst bleaching and coral die-off on record.
It's the point of no return for coral reefs, researchers say; as global temperatures continue to rise, Earth has officially passed its first climate tipping point.
Author's summary: Earth passes its first climate tipping point.