Polar ice needs 1.0°C limit

A UN‑backed cryosphere report suggests that the safe, long‑term temperature threshold for protecting Greenland, Antarctic ice sheets and global glaciers is substantially lower than 1.5°C — closer to 1.0°C (or even below). The authors find that many ice systems will continue to lose mass even after brief overshoots of 1.5°C and may take centuries to millennia to recover, meaning policy should focus on rapid cuts plus strategies to return temperatures well below the Paris benchmark. — If accepted, this reframes Paris‑agreement thinking: temporary overshoots are not merely politically inconvenient but risk near‑permanent loss of ice, amplifying the urgency for faster emissions cuts, removal technologies and coastal adaptation finance.