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Environment Main Global Warming Natural Disasters Habitats FRESHWATER

Photo Gallery: Arctic Climate Change

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Freezing water from beneath Earth's surface forces the ground upward in Canada's Mackenzie River delta. Much of the basin is made up of permafrost, a layer of frozen soil in Earth's polar regions. Loss of permafrost due to climate change in Canada's Northern Territories may increase runoff and sediment flowing into rivers and make some slopes more unstable and vulnerable to landslides. Photograph by Bernhard Edmaier