sea ice

Polar Bears Are Suffering from the Arctic’s Loss of Sea Ice. So Is Scientists’ Ability to Study Them

The melting ice is affecting the bears’ behavior and physical condition, and it has made studying them through forays out onto the ice a treacherous business.

By David Hasemyer

The Acceleration of an Antarctic Glacier Shows How Global Warming Can Rapidly Break Up Polar Ice and Raise Sea Level

By Bob Berwyn

How Many Polar Bears Will Be Left in 2100? If Temperatures Keep Rising, Probably Not a Lot

By Katelyn Weisbrod

Alaska’s Big Whale Mystery: Where Are the Bowheads?

By Sabrina Shankman

Arctic Sea Ice Hits Record Lows Off Alaska

By Sabrina Shankman

Are Antarctica's Ice Sheets Near a Climate Tipping Point?

By Bob Berwyn

Ice Loss and the Polar Vortex: How a Warming Arctic Fuels Cold Snaps

By Bob Berwyn

As Arctic Sea Ice Disappears, 2,000 Walruses Mob a Remote Alaska Beach

By Phil McKenna

Alaska's Sea Ice Is Melting Unusually Early, 'Another Sign Arctic Is Unraveling'

By Bob Berwyn

Ice at Both Poles Shrinks to Record Lows

By Sabrina Shankman

State of the Warming Climate: 'Truly Uncharted Territory'

By Sabrina Shankman

Arctic Sea Ice Melt, Driven by Global Warming, Accelerated by Nature

By Sabrina Shankman

Antarctic Sea Ice Sets Record Low, Providing Another Mystery for Scientists

By Phil McKenna

1979 Arctic Model Predicted Current Sea Ice Demise

By Sabrina Shankman

Research Finds Hope in Slowing Arctic's Climate-Warming Black Carbon

By Sabrina Shankman

Unrelenting Global Warming Sends Sea Ice to Record Low

By Bob Berwyn

How Much Arctic Sea Ice Is Each of Us Melting? Quite a Bit

By Sabrina Shankman

Arctic Melt of Last Two Decades 'Unprecedented,' Data Shows

By Bob Berwyn

With Arctic Sea Ice Unusually Thin, Scientists Wary of Another Record Melt

By Bob Berwyn