Stratospheric polar vortex changes still trigger brutal U.S. winter cold snaps and extreme weather despite a warming climate.

Even in a warming climate, brutal cold snaps still hammer parts of the U.S., and a new study uncovers why. High above the ...

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

I share my month‑long journey using this cooling liquid—how I went from constant stiffness to relief without pills.

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