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On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.
Overview (es)

Sea Level Rise

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Looking through this iceberg's reflection in the Antarctic water, you can see the iceberg below the surface—some 90% of its total volume.
Overview (es)

The Arctic and The Antarctic

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a large iceberg
Video

National Ice Center Monitors the Arctic and Antarctic

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a ship in an icy landscape
Video

Arctic Exploration

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ice cover simulation
Video

Receding Ice Cover

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Screenshot from"Climate Change Effects on Glaciers and Ice Sheets" with an Arctic glacier.
Video

Climate Change Effects on Glaciers and Ice Sheets

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Screenshot from video of a ship amidst broken up ice.
Video

Dr. Jan Backman, Marine Geologist

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the front of an ice breaker
Video

Sea Ice in its Ever-Changing Forms

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Penguins standing on ice.
Video

Animals of the Ice

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A team of scientists explore the Arctic ocean.
Slideshow

Under Arctic Ice

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Weddell seals grind their teeth on holes in the ice to keep them open to their comings and goings between ocean and air.
Photo

Weddell Seal in Antarctic Water

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Snow petrels hunt in Antarctic sea ice, feeding on krill and fish.
Photo

Snow Petrel

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