New research reveals the importance of winter sea ice in the year-to-year variability of the amount of atmospheric CO2 ...

A breakthrough study has uncovered that the Southern Ocean's power to pull carbon dioxide from the atmosphere fluctuates ...

Emperor penguin populations are falling much faster than expected. Ice is melting beneath their chicks before they’re ready.

NASA satellites looked down on huge cracks forming in sea ice in Canada's far north. What is it? The Amundsen Gulf is named ...

Two nuclear icebreakers are making way for a tanker and two cargo ships in this year's first transit shipment on the Russian Arctic route.

The most recent data from NOAA shows a major decline in gray whale populations compared to a year ago. Here's what to know.

Shot by Paul Nicklen and Cristina Mittermeier of the nonprofit group Sea Legacy, and published on National Geographic in early December ... In the late spring, the ice is breaking up sooner ...

A harp seal pup sits on a snow-covered beach near the town of Blanc-Sablon, Québec, in early March. Normally harp seals give birth and raise their pups on sea ice in the Gulf of St. Lawrence ...