Winter sea ice in the Arctic just hit a record low. Just 5.53 million square miles of ice had formed as of March 22, the smallest maximum extent since satellite recordkeeping began in the 1970s.

The winter growth period for sea ice in the Arctic Ocean is now over, with levels at a record low. The winter ice extent on 21 March 2025 was lower than at any time since continuous satellite ...

In the Arctic, sea ice remained at 8 per cent below average throughout February, missing an area of ice roughly the size of the UK. This was the third consecutive month to set a new monthly record ...

As sea ice disappears and grows less reflective, the Arctic has lost around a quarter of its cooling power since 1980, and the world has lost up to 15%, according to new research.

Last month’s record low for the global sea ice extent came on what Copernicus said was the third warmest February globally. The agency said it marked the 19th month out of the past 20 in which ...

Environment Why vanishing sea ice at the poles is a crisis for the entire planet. Extremely low sea ice levels in the Arctic and Antarctica signal a "new normal" that may accelerate global warming ...

The Greenland and Antarctic ice sheets are on course for rapid retreat, even collapse, leading to multiple feet of sea level rise even if the world pulls off the miraculous and keeps global ...

Antarctica's annual maximum sea ice extent in September 2023 was the lowest on record, with approximately 1.75 million square kilometers less sea ice than normal—an area equivalent to about 6.5 ...

Antarctica’s Weddell Sea (pictured) saw particularly large sea ice loss between 2018 and 2019 — loss that may be linked to increased soot in the atmosphere from fires in the Amazon.

When ice gets trapped on land as giant ice sheets, it causes the sea level to change, but it doesn’t change by the same amount all around the planet.

When sea ice forms later, the communities of tiny algae that live within it change too. Detecting these early signals now could help us adapt to a changing world.