World’s weird weather: How polar vortex is creating topsy-turvy temperatures in northern hemisphere
All across the northern hemisphere from Athens, Greece, to Athens, Texas, snowfalls have blanketed streets and temperatures have plunged to freezing in places where winter usually requires no more than a jacket. Around the North Pole, winter’s ultra-cold air is usually kept bottled up 15 to 30 miles high. That’s the polar vortex, which spins … Read more
