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sea ice

Scientists Report a Dramatic Drop in the Extent of Antarctic Sea Ice

Links between global warming and the decline of sea ice in the Southern Ocean are still unclear, but climate can’t be ruled out as a driver.

By Bob Berwyn

A view of an iceberg in Lemaire Channel in Antartica. Credit: Sebnem Coskun/Anadolu Agency via Getty Images
Flames and heavy smoke approach on a western front of the Apple Fire, consuming brush and forest at a high rate of speed during an excessive heat warning on Aug. 1, 2020 in Cherry Valley, California. Credit: David McNew/Getty Images

Wildfire Pollution May Play a Surprising Role in the Fate of Arctic Sea Ice

By Bob Berwyn

USGS biologist Todd Atwood weighs a polar bear on the southern Beaufort Sea. Climate change has caused the ice to become too thin in recent years to safely allow for this kind of polar bear examinations. Photo Courtesy of Todd Atwood

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

By David Hasemyer

The accelerating breakup of Antarctic ice shelves along the Antarctic Peninsula is intensifying concerns about sea level rise. Credit Bob Berwyn

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

By Bob Berwyn

A new study projects that all but possibly a few polar bear populations will face demographic declines by 2100 as the season with no sea ice elongates and extends polar bear fasts. Credit: Steven C. Amstrup/Polar Bears International

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

By Katelyn Weisbrod

A bowhead whale spotted by observers on Oct. 29, 2019. Credit: Vicki Beaver/NOAA/NMFS/AFSC/MML via BOEM

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

By Sabrina Shankman

Record low ice extent was recorded in the Bering and Chukchi Seas in late November 2017. Credit: NOAA

Arctic Sea Ice Hits Record Lows Off Alaska

By Sabrina Shankman

Getz ice shelf, Antarctica. Credit: Jeremy Harbeck/NASA

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

By Bob Berwyn

A strong versus weakened polar vortex. Credit: NOAA

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

By Bob Berwyn

2014 Walrus haul out in Alaska. Credit: Corey Accardo/NOAA

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

By Phil McKenna

Polar bear on sea ice

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

By Bob Berwyn

Arctic ice has dwindled to record lows

Ice at Both Poles Shrinks to Record Lows

By Sabrina Shankman

Hurricane Matthew devastated Haiti in 2016

State of the Warming Climate: 'Truly Uncharted Territory'

By Sabrina Shankman

New study shows how much Arctic sea ice melt is from manmade global warming and natural variation

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

By Sabrina Shankman

A colony of Adelie penguins basks near the sea ice in Antarctica

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

By Phil McKenna

Arctic sea ice has reached record lows

1979 Arctic Model Predicted Current Sea Ice Demise

By Sabrina Shankman

Black carbon blackens Arctic ice, accelerating warming of the atmosphere and melting of the ice

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

By Sabrina Shankman

November and December brought record warmth to the Arctic

Unrelenting Global Warming Sends Sea Ice to Record Low

By Bob Berwyn

You helped melt that Arctic ice, a new study shows

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

By Sabrina Shankman

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