Glaciers are essentially giant rivers of ice that are formed over eons as fallen snow is compressed into layers of ice. Glaciers are found on about 10 percent of Earth's land area, with most of them found in the Arctic and Antarctica regions, but some occurring high up on mountains, even in tropical areas. Glacial ice makes up the ice sheets that cover Antarctica and Greenland, with glaciers flowing out to sea, where their ends float on the water as ice shelves. Eventually pieces of the ice shelves break off, or calve, to form icebergs. The movement of glaciers scours the underlying rock, and a glacier's movement can be affected by climate change, with worries that global warming could cause substantial glacial melt and impact global sea levels. For the latest news on glacier research and stunning views of these rivers of ice, see below.
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Mysterious Ancient Moroccan Rock Pile Explained
The village of Arroumd in the High Atlas, Morocco
April 14th, 2014
The mystery of the giant pile of boulders that a Moroccan village now rests on has been solved; they are the result of a huge, catastrophic rock fall that occurred 4,500 years ago in the Atlas Mountains.
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54-Year-Old Message in a Bottle Found in Canadian Arctic
MODIS satellite true color image of the Canadian Arctic Archipelago.
December 23rd, 2013
A 54-year-old message in a bottle was found on Ward Hunt Island, a remote island in the northernmost part of the Canadian Arctic.
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Massive Antarctic Iceberg Sets Sail
Pine Island Glacier
November 13th, 2013
After lingering in its birthing bay for nearly six months, an Antarctic iceberg the size of Singapore is finally heading out to sea. Researchers will track the drifting floe, which could disrupt shipping lanes.
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'Fossilized Rivers' Reveal Clues About Disappearing Glaciers
February 3rd, 2014
An amazing landscape left behind by melting ice sheets offers clues to the future of Greenland's disappearing glaciers, a new study suggests.
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Mountains Crumbled When Earth Cooled
Tibet glaciers
December 18th, 2013
A big chill 2 million years ago bred glaciers that scoured mountains across the planet, pouring trillions of tons of mud into the oceans.
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First Estuary Discovered Under Antarctic Ice
September 20th, 2013
Some of the richest ecosystems on Earth are estuaries, where freshwater and saltwater collide with the tides. For the first time, scientists have discovered an estuary underneath the edge of Antarctica's massive ice sheet.
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Scotland Surprisingly Had Glaciers 400 Years Ago
Cairngorm Mountains with snow.
January 22nd, 2014
The last glaciers in the United Kingdom melted centuries ago, not 11,500 years has had been believed, new research finds. Scotland's Cairngorm Mountains hosted glaciers in the Little Ice Age.
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