Glaciers and ice sheets are commonly thought to work like a belt sander. As they move over the land they scrape off everything — vegetation, soil and even the top layer of bedrock. So a team of university scientists and a NASA colleague were greatly surprised to discover an ancient tundra landscape preserved under the Greenland Ice Sheet, below two miles of ice.
Data from a NASA airborne science mission reveals evidence of a large and previously unknown canyon hidden under a mile of Greenland ice. The canyon has the characteristics of a winding river channel and is at least 460 miles (750 kilometers) long, making it longer than the Grand Canyon.
Human beings have been pumping methane into the atmosphere since Roman times, in enough quantity for it to show up in the Greenland ice sheet.
Melting over the Greenland ice sheet has loudly shattered the seasonal record on August 8 - a full four weeks before the official close of the summer melting season.
Greenland's ice sheet is rapidly melting, but an international team of scientists say predicting its complete disappearance would be premature.
Octopuses are intelligent creatures - but, all the same, you might not expect them to have much to say about climate change.
The Greenland Ice Sheet is accelerating in its slide into the ocean, like snow sliding off a roof on a sunny day.
The Greenland ice sheet appears more vulnerable to global warming than previously thought, and could disappear altogether if global temperatures rise more than 1.6 degrees Celcius above pre-industrial levels.
Greenland's bedrock rose by more than three quarters of an inch in some places, following 2010's major loss of ice.
The appearance of the Antarctic ice sheets was triggered by a massive fall in the amount of atmospheric carbon dioxide, new research has found.
The Antarctic ice sheet is forming and reforming in a completely different way to what was previously believed, a new study has revealed.
Last year's melting of the Greenland Ice Sheet was the worst ever recorded, according to research from the City College of New York.