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Too hot for humans.

"The paper finds that the amount of landmass on our planet that would be too hot for even healthy young humans (18 to 60-year-olds) to keep a safe core body temperature will approximately triple (to 6%)—an area almost the size of the US—if global warming reaches 2°C above the preindustrial average.

Under these conditions, they also warn that the area of land where the over 60s will be at risk will increase to about 35%."

https://phys.org/news/2025-02-degree-global-triple-area-earth.html