Global heating will push billions outside ‘human climate niche’

World is on track for 2.7C and ‘phenomenal’ human suffering, scientists warn

Global heating will drive billions of people out of the “climate niche” in which humanity has flourished for millennia, a study has estimated, exposing them to unprecedented temperatures and extreme weather.

The world is on track for 2.7C of heating with current action plans and this would mean 2 billion people experiencing average annual temperatures above 29C by 2030, a level at which very few communities have lived in the past.