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a large iceberg
Video

National Ice Center Monitors the Arctic and Antarctic

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A walrus sits on top of ice.
Article

The Cultural Icescapes of the Arctic

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The Greenland glacier Jakobshavn Isbrae is massive, at around 40 miles long and more than a mile thick.
Article

Up Close and Personal With the Fastest Glacier in the World

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A narwhal breaches the surface, its tusk pointed to the sky
Article

Why a Tusk? The real-life unicorns of the sea and the tusks that make them famous

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