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Special Report

The Future of the Poles

Both the North and South poles are undergoing unprecedented changes as a result of man-made climate change. What does this mean for the region's wildlife and natural resources as countries make claims for territory?

Kayaking Antarctica with Jon Bowermaster

How a warming climate leads to freezing penguins, with journalist and author Jon Bowermaster, who has kayaked the world's seas, most recently in Antarctica. And Cynthia Graber takes us on a tour with a new M.I.T. underwater autonomous vehicle. Plus, we'll test your knowledge of some recent science in the news. Websites related to this episode include www.jonbowermaster.com

November 12, 2008 — Steve Mirsky

The North Pole Is Melting

The permanent Arctic ice cap dwindled to a record low this week, presaging a future of a summertime Northwest Passage and obscuring fog

September 21, 2007 — David Biello

Unquiet Ice Speaks Volumes on Global Warming

Abundant liquid water newly discovered underneath the world's great ice sheets could intensify the destabilizing effects of global warming on the sheets. Then, even without melting, the sheets may slide into the sea and raise sea level catastrophically

February 1, 2008 — Robin Bell
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