LiveScience: An amazing landscape left behind by melting ice sheets offers clues to the future of Greenland's shrinking glaciers, a new study suggests.
The incredible terrain is in northern Canada, which is ridged with thousands of eskers -- the sinuous, gravelly remains of streams and rivers that flowed beneath the ice. Canada was once buried beneath miles of ice, similar to the way Greenland is today. Called the Laurentide Ice Sheet, this massive ice cap covered all of Canada and parts of the northern United...