Satellite imagery has revealed a yet-to-be-explained rise in the Southern Ocean's salinity. It could be a key factor in the decline of the region's sea ice.

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

It is in no one’s interest to militarise the Arctic but thanks to something of an arms race heating up between the US, Russia ...

Because of an unstable polar vortex, experts have projected record low levels of Arctic sea ice for the coming winter.