AI Summary

Regions worldwide may already have experienced 90 %–94 % of the warming projected for a 1.5 °C rise above preindustrial levels, and 65 %–76 % of the warming expected at 2 °C, according to a study in *Nature Climate Change*. The research shows that regional temperatures in 2025 were statistically indistinguishable from those expected in a 1.5 °C warmer world, highlighting an urgent need for adaptation everywhere. The Paris Agreement seeks to keep global average temperature well below 2 °C and pursue limits of 1.5 °C, but the same global target translates into varying regional warming. Estimating regional changes is especially challenging in parts of Africa, South America, and polar regions where historical temperature data are sparse or absent.

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