A polar bear cools down on a pile of ice that was brought to its enclosure on a hot and sunny day at the Prague zoo, Czech ...

Scientists were initially given less than a week to prepare for the loss of microwave observations that are key in detecting ...

Denmark is holding one of its largest military exercises in Greenland this month, deploying a frigate, F-16s, special forces, ...

Runners are preparing for the Chicago Marathon later this year, but one resident has her sights set much, much further north.

The team found microplastics in both glacial ice and seawater. They also noted that atmospheric “rivers” are sending ash-laden air from Amazon forest fires to Antarctica, hastening the melting ...

The world is experiencing a string of intense weather, from the polar vortex in the north to a cyclone near south-east Australia, as the latest data show the global temperatures that contribute to ...

Arctic cyclones may be accelerating sea ice loss by breaking ice into smaller pieces and driving upwelling of warm water. A study links these storms to rapid ice depletion and suggests that tropopause ...

{span}Arctic sea ice extent for September 19 2023, was 4.23 million square kilometers (1.63 million square miles). It was the sixth smallest summer minimum on record.

Observational-based analyses of reduced Arctic sea ice underneath an Arctic cyclone and tropopause polar vortex. Credit: Communications Earth & Environment (2025). DOI: 10.1038/s43247-025-02022-9 ...

Cavallo said tropopause polar vortices are sometimes present for months before an Arctic cyclone forms, while Arctic cyclones are usually only predicted several days in advance. Because the ...

Arctic sea ice extent for September 19 2023, was 4.23 million square kilometers (1.63 million square miles). It was the sixth smallest summer minimum on record. The orange line shows the 1981 to 2010 ...

A polar vortex is slated to sweep most of the continental United States bringing a hazardous freeze to millions of Americans from the Deep South to the Northeast Saturday going into next week.