New research challenges the long-held belief that the Arctic Ocean was covered by a massive ice shelf during ice ages.

For years, scientists have debated whether a giant thick ice shelf once covered the entire Arctic Ocean during the coldest ...

For comparison, recent years have seen the Arctic Ocean with a minimum sea ice cover in September of around 1,274,000 square miles, which is about a third of the area of the US.

The first ice-free days of the Arctic Ocean could occur as soon as the 2020s or 2030s — as many as 10 years earlier than previous projections.

The graph indicates the Arctic sea ice extent − the area of ocean covered by a certain percentage of ice − was higher in 2023 than in the other listed years and similar to the "17-year average." ...

In April 1895, when famed Norwegian explorer Fridjtof Nansen attempted to mush across the frozen Arctic Ocean to reach the North Pole, he was stopped by endless rows of sea ice ridges.

The Arctic Ocean has always been a region that’s fascinated University of Delaware doctoral student Tianyu Zhou. While most of humanity lives in the world’s temperate zone, the polar ocean seems like ...

Left: Greenpeace's Arctic Sunrise ship navigates through floating ice in the Arctic Ocean, September 15, 2020. Picture taken with a drone. Photo by Natalie Thomas/REUTERS Related.

The implications of an ice-free Arctic Ocean — which spans an area roughly equivalent to the size of the Lower 48 United States — are worrisome. According to the study, ...