Earth Crosses Its First Climate Tipping Point: Coral Reefs Facing Irreversible Decline

A major new report warns that Earth has crossed its first catastrophic climate tipping point, with warm-water coral reefs entering a long-term decline that could threaten the livelihoods of hundreds of millions of people.

The study, led by the University of Exeter and funded by Jeff Bezos’s Earth Fund, says coral reefs began collapsing once global temperatures surpassed about 1.2°C above pre-industrial levels — a threshold the planet has already crossed.

Scientists warn that reefs, which host a quarter of all marine life, are now experiencing the most severe bleaching event in recorded history, affecting over 80 countries.

The report cautions that other critical systems like the Amazon rainforest, major ocean currents, and polar ice sheets are also nearing irreversible tipping points.

However, some experts dispute the timeline, arguing that certain corals may adapt to higher temperatures if urgent global action is taken.

The authors emphasize that “positive tipping points” such as clean energy adoption could still reverse the trajectory if societies act swiftly.