Add Yahoo as a preferred source to see more of our stories on Google. Winter might be well underway, but a polar vortex is expected to impact much of the country including Texas, with forecasts ...

Despite its apocalyptic-sounding name, a polar vortex is a fairly common occurrence. In fact, it exists year-round at both poles. It's the area of low pressure and cold temperatures that moves in a ...

Winter might be well underway, but a polar vortex is expected to impact much of the country including Texas, with forecasts predicting possible snowfall in the Lonestar State. With a potent cold front ...