Rapid emissions cuts could still ensure their long-term survival. Otherwise, some Arctic regions seem set to lose polar bears by 2080 – and all but a few populations could collapse by 2100, according to a new study.

Rapid emissions cuts could still ensure their long-term survival. Otherwise, some Arctic regions seem set to lose polar bears by 2080 – and all but a few populations could collapse by 2100, according to a new study.