Scientists say the West Antarctic Ice Sheet could collapse with very little additional warming and the four metres of sea level rise that would follow cannot be stopped once it begins

A modelling study published in Communications Earth & Environment in June 2025 found that the West Antarctic Ice Sheet could begin an irreversible collapse at ocean temperatures between zero and 0.25°C above current levels — meaning the threshold may have already been reached Once the collapse begins, the authors argue, it would be self-sustaining: not [...] The post Scientists say the West Antarctic Ice Sheet could collapse with very little additional warming and the four metres of sea level ri