UN assessment: 96% of world's shallow-water coral reefs face collapse by 2075

A UN-backed assessment warns that global heating will push 96% of shallow-water coral reefs across 80 countries into high-risk ecosystem collapse by 2075, with 24% already critically endangered. The finding underscores accelerating climate-driven degradation of marine ecosystems, including Australia's Great Barrier Reef, and signals potential cascading impacts on biodiversity and coastal economies. The assessment is based on expert modeling and current emissions trajectories, with uncertainty over mitigation efforts.

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