Greenland's massive ice sheet is melting ever faster in a year of record temperatures. Has it passed the point of no return?

Greenland's massive ice sheet is melting ever faster in a year of record temperatures. Has it passed the point of no return?
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.
Zackenberg station from the air (I.Quaile) In the remote, high Arctic region of north-eastern Greenland, at 74° North, a scattered group of blue and white buildings and tent-like structures perches above a river which starts to swell with melting ice, in a broad valley amongst green and brown hills, dotted with snow. For almost 25 …