See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A polar vortex could bring the coldest January the U.S. has faced in ...

Add Yahoo as a preferred source to see more of our stories on Google. The polar vortex will engulf much of North America as we head into next week, with temperatures dipping down into the -20s and ...

In 2014, the term “polar vortex” burst on the scene across Canada and the U.S. as temperatures plunged. In some places, it was colder than it was on Mars. Well, get ready to hear more about it.

A polar vortex could bring the coldest January the U.S. has faced in years. National Weather Service experts told Newsweek that Americans can expect a colder-than-average start to the new year. So far ...