A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...
A major winter blast is stirring up dangerous conditions across the U.S. central and southern states all the way to the East ...
The polar vortex of ultra-cold air usually stays penned up around the North Pole, spinning like a top. But sometimes it escapes or stretches down to the United States, Europe or Asia — and that’s when ...
The United States continued to freeze through a polar vortex that brought rare cold to the southern United States and chances ...