(noun) A threshold that once crossed can trigger dramatic and irreversible changes in large natural systems
Scientists have warned for years that the more the world warms, the greater the risk of hitting multiple climate tipping points and setting off self-propelling shifts in everything from the Amazon rainforest to vital ocean currents and polar ice sheets.
These alerts have intensified in 2025, which began with scientists confirming 2024 was the first calendar year during which the average global temperature exceeded 1.5C above pre-industrial levels.
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