Lena Fischer
Climate scientist at the Potsdam Institute for Climate Impact Research, specializing in Earth system tipping points and climate feedback mechanisms.
January 25, 2026·8 min read
The Point of No Return
Climate scientists are increasingly concerned about tipping points — thresholds in the Earth system that, once crossed, trigger self-reinforcing changes that are difficult or impossible to reverse. The collapse of the West Antarctic Ice Sheet, the dieback of the Amazon rainforest, and the thawing of Arctic permafrost are among the most dangerous tipping elements.
TOPICS
climate changetipping pointsAmazonArcticsea level rise


