What is the polar vortex?

The polar vortex is a large area of low pressure and cold air surrounding both of the Earth's poles. It ALWAYS exists near the poles, but weakens in summer and strengthens in winter. The term "vortex" refers to the counter-clockwise ...

Dangerous wind chills, snow in Midwest; cold grips Northeast

Dangerously cold temperatures gripped the Upper Midwest in advance of a storm that's expected to bring several inches of snow in coming days, while schools and officials in the Northeast braced for their own blast of wintry ...

Q&A: Europe's freezing Easter and global warming

(AP)—Is it Easter or Christmas? Many Europeans would be forgiven for being confused by winter's icy grip on lands that should be thawing in springtime temperatures by now.

Is global warming causing harsher winters?

Millions of people in northern Europe are still battling snow and ice, wondering why they are being punished with bitter cold when—officially—spring has arrived and Earth is in the grip of global warming.

Aarhus University builds research station in North Greenland

Climate change is one of the major challenges facing the international community in the coming century. The warmer climate has already had a significant impact on the distribution of the sea ice, and has led to the advancement ...

Experts: Cold snap doesn't disprove global warming

(AP) -- Beijing had its coldest morning in almost 40 years and its biggest snowfall since 1951. Britain is suffering through its longest cold snap since 1981. And freezing weather is gripping the Deep South, including Florida's ...

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