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 ...

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An international research group has found that extreme cold snaps in the United States are driven by disruptions in a high-altitude Arctic air mass called the polar vortex, Hebrew University of ...

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

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S.—and this study explains why. Researchers found that two specific ...

Pierre Firefighters provide regular updates, but the terms they use aren't always well-known. At the height of wildfire ...

Recently, scorching heat waves have swept across numerous regions worldwide. Even Mohe, China's northernmost city in ...

Arctic amplification is the intense warming in the Arctic. Greenhouse gases raise air temperatures, melting sea ice and thawing permafrost and initiating a feedback loop accelerating climate change.

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

This phenomenon has also already struck Europe and China this summer, leading to the temporary closure of the Eiffel Tower and worries about wilting rice crops, respectively ...

The governor cited declining state revenues for the budget vetoes. Legislators and advocates say funding for child care and ...