After 10 days with only the open ocean and the occasional iceberg at our sides, sailing into the sea ice felt like crossing ...

The sea ice changed completely over the course of a few hours, from disconnected floes to a vast, snow-covered plain.

Ancient shorelines, buried peat and rocks locked beneath Greenland’s ice are all pointing in the same direction: when the ...

The collapsing sea ice around the Antarctic continent has led to a doubling in the number of icebergs calving from ice sheets and a surge in sea temperatures, and the impacts are growing more severe ...

(CNN) — An Antarctic glacier shrunk by nearly 50% in just two months, the fastest retreat recorded in modern history, according to a new study — and the way it retreated could have big implications ...

The Prudhoe ice dome disappeared during a warm period 7000 years ago. Global warming could cause similar temperatures by 2100 ...

As the Arctic melts and people spend more time there, defining our relationship to sea ice becomes more necessary.

(CNN) — For around 2,000 years, global sea levels varied little. That changed in the 20th century. They started rising and have not stopped since — and the pace is accelerating. Scientists are ...