Data sources other than satellites allow us to look back at least as far as 1900. These indicate Antarctic sea-ice was in a state of decline early in the last century, but then started to increase.

Antarctic sea ice levels are now at their lowest on RECORD – and the worst is yet to come, report warns There is now 737,000 square miles (1.91 million square km) of Antarctic sea ice ...

The ice that floats on the Antarctic Ocean's surface now measures less than 17 million sq km - that is 1.5 million sq km of sea-ice less than the September average, and well below previous winter ...

Antarctica's sea ice has dropped to an 'alarming' low during the southern hemisphere's summer, scientists have revealed. Ice surrounding Earth's southernmost continent now measures less than ...

In 2023, the area of Antarctic winter sea ice was a record 1.55 million square kilometres below the expected average extent.

Since 2016, Antarctica has seen the four years with the lowest sea ice extents (areas of ice that cover the ocean) in the 45-year satellite record, with the two lowest years in 2021/22 and 2022/23.

In Antarctica, summers and winters are flipped compared to the Northern Hemisphere. So, sea ice normally reaches its maximum extent in September, when it covers around 18.5 million square kilometers.

Seabirds that breed hundreds of miles away from Antarctica could be negatively affected by the continent’s melting sea ice, experts have warned. Its shrinking ice could force albatrosses and ...

Sea-ice measurements in Antarctica have registered a new minimum, breaking the record set only one year ago.