Using old satellite radar techniques, scientists have developed a new way of measuring the true extent of an understudied and ...

For decades, a vast ring of sea ice around Antarctica acted as a planetary cooling system, reflecting sunlight back into ...

In 2026, the Arctic winter sea-ice extent (annual maximum extent) reached the lowest value since satellite observations began in 1979, following the previous record low in March 2025. As part of the ...

The process wiped out sea ice over an area roughly the size of Greenland.

A new study reveals that Arctic sea ice loss is depleting a key ocean nutrient, threatening plankton, marine life, and food webs ...

For decades, it seemed Antarctica might be insulated from the kind of rapid ice melting unfolding in the Arctic. But in 2015, that changed when the sea ice fringing this vast, icy continent stopped ...

For decades, Antarctica seemed to defy global warming. Since satellites began monitoring the poles in the late 1970s, the seasonal growth and retreat of Antarctic sea ice – frozen seawater that ...

Antarctica's Ross Ice Shelf and the West Antarctic Ice Sheet may have been far smaller during one of Earth's most recent warm ...

(a) Interannual variability in Arctic sea-ice extent maximum (1979–2026). In 2026, the annual maximum extent reached a record low of 13.76 million square kilometers on March 13 (indicated by the red ...