In the remote reaches of Greenland, the sparkling white ice sheet stretches as far as the eye can see. But over in the far west of the massive island, a mysterious dark patch creates an ominous smear across the landscape. Worse still, it’s growing darker. So what does this mean for the future of the human race?
At both poles of the Earth, vast masses of frozen water known as ice sheets cover the barren land. According to experts, they are formed when snow remains in one spot for an extended period of time. Gradually, more snow lands on top, slowly compacting each layer and transforming it into ice.