polar vortex

'Snowga' anyone? Women practice yoga in the snow
Forget hot yoga. Yogis are finding their zen by practicing "snowga" or snow yoga outside in freezing temperatures.
Polar vortex: Iowa college student found dead on campus
What is a polar vortex?
Why is it about to get so cold in much of the country?
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Polar vortex: Iowa college student found dead on campus
What is a polar vortex?
Why is it about to get so cold in much of the country?