Global warming may have pushed Greenland’s ice sheets past a tipping point, with the island having lost ice from its glaciers faster than snowfall could replenish them over the past two decades, according to a new study. Although this trend is expected to worsen as global temperatures increase, the researchersread more

A massive impact crater the size of the city of Paris has been discovered under the ice sheet in northern Greenland. Partially hidden under the Hiawatha Glacier, this 31-kilometer (19.3-mile) crater is estimated to be no older than three million years, but the researchers believe that it was formed much more recently, possibly as late as 12,000 years ago, making it the largest impact crater of its kind on Earth.
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In 1960, the United States Army launched a program called "Project Iceworm", a plan to build launch sites for nuclear missiles under the northern Greenland ice sheet, to provide the missiles with closer access to the Soviet Union. To test the feasibility of this concept, the Army established a base called Camp Century, a functioning military site consisting of tunnels and chambers carved directly into the ice. However, the site’s engineers soon found that the glacier that the base was built into isn’t a stable mass of ice, but instead flows at a slow rate, deforming the base’s tunnels. This resulted in Camp Century’s abandonment in 1966.
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Earlier this month, the North Atlantic experienced a rare January hurricane, named Hurricane Alex. While Alex’s northward track kept it in the middle of the Atlantic Ocean, it’s arrival in the waters south of Greenland coincided with a sudden outflowing of meltwater through a bay in the Western Greenland, indicating that the warm winds that accompanied Alex had triggered a melting event.
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