Observing Greenland from a helicopter, the main problem is one of comprehending scale. I have thought we were skimming low over the waves of a fjord, before noticing the tiny shadow of a seabird far below and realizing what I suspected were floating shards of ice were in fact icebergs the size of office blocks.

The world's second biggest body of ice - the Greenland Ice Sheet - is cracking open quicker than scientists had previously thought. That's according to new research by a team of scientists, led by Dr Tom Chudley, from Durham University's Geography Department.

Greenland ice sheet cracking open quicker than ever before, warn scientists - If the Greenland Ice Sheet was to melt, sea levels could rise by seven metres

Large-scale study finds crevasse sizes on Greenland ice sheet increasing in size and depth – and may cause more rapid loss of ice from region