The Greenland ice sheet is currently going through a major melting this week, covering almost half its surface — unprecedented…

The Greenland ice sheet is currently going through a major melting this week, covering almost half its surface — unprecedented in its extent for this early in the year.

This has not happened before. pic.twitter.com/vvh3scodLy

— Eric Holthaus (@EricHolthaus) June 13, 2019

(via http://twitter.com/EricHolthaus/status/1139234563400634368)