A 2025 satellite image shows a series of ghostly ice swirls sculpted on the surface of Lake Michigan by strong winds during an extreme cold snap that covered Chicago in a blanket of snow.

This winter, the Northern Hemisphere has been suffering from extreme cold. South Korea has experienced an unusually prolonged cold wave even after the traditional coldest day of the year, Daehan ...

Antarctica’s polar vortex could be about to split in two for the first time in more than 20 years after a series of sudden spikes in stratospheric temperatures. If that happens, it could lead to ...