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data of sea ice coverage in the Arctic
Article

Arctic Sea Ice: A New Low?

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Two nurse sharks hover over a baited cage
Lesson Plan

Where There’s Smoke…

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The robotic underwater glider Scarlet Knight crossed the Atlantic over the course of several months in 2009.
Article

Underwater Robots Explore the Ocean

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a ship in an icy landscape
Video

Arctic Exploration

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A walrus sits on top of ice.
Article

The Cultural Icescapes of the Arctic

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

Sea Level Rise

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A shell placed in seawater with increased acidity slowly dissolves over 45 days.
Overview

Ocean Acidification

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In 2011, storms and lack of ice-cover due to a warmer winter climate resulted in hundreds of seal pups being washed up on the shore of Prince Edward Island. Like many, this young seal faced an uncertain future. See more Nature's Best Photos.
Article

Ice-Loving Seals and the Loss of Sea Ice

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A team of scientists explore the Arctic ocean.
Slideshow

Under Arctic Ice

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Polar bears are threatened by a lack of sea ice.
Article

Climate Change at the Poles

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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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An underwater blizzard of oil, marine microbes, "sea snot", and algae.
Article

Five Questions with Uta Passow, How An Oil Spill Affects the Movement of Carbon In the Ocean

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