sea ice

National Park Service

Balancing conservation and development in the circumpolar north …


Training to respond to trouble on a cruise ship in Arctic waters …


NSIDC/NASA Earth Observatory

Scientists say warm winter weather around the circumpolar north has led to another record-setting year of decreasing sea-ice coverage of the Arctic Ocean. The extent of sea ice formed over this past winter fell short of the previous record-low extent set last year.

The ripple effects of polar ice-melting …


Record-setting Arctic warmth and sea-ice cover … 


A first step toward a second Alaskan deep-water port project …

A large cruise ship to transit the Northwest Passage …


The Pentagon declares climate change a national security threat …


A near-record year for Arctic Ocean sea-ice retreat – and researchers are on site to study why …


Tim Ellis/KUAC

President Obama says time is running short to limit the impact of climate change, and that it’s going to take a unified, global effort to make that happen. He delivered his urgent appeal in a speech at an international climate conference in Anchorage.


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