The Arctic is in a death spiral. How much longer will it exist?

The region is unravelling faster than anyone could once have predicted. But there may still be time to act The great thaw: global heating upends life on Arctic permafrost - photo essayAt the end of July, 40% of the 4,000-year-old Milne Ice Shelf, located on the north-western edge of Ellesmere Island, calved into the sea. Canada's last fully intact ice shelf was no more.On the other side of the island, the most northerly in Canada, the St Patrick's Bay ice caps completely disappeared. Continue reading...