If you are pulling out a heavy winter coat this weekend, you might be tempted to blame the polar vortex. Meteorologists at AccuWeather say that would be a mistake. While chilly air is sweeping across parts of the United States right now, it has nothing to do with the massive atmospheric shift happen ing miles above […] Polar Vortex Winds Just Shattered A 58-Year Record—Here’s Why It Won’t Freeze The U.S. ...read more read less