A potent cold front will enter the north-central U.S. before roaring across much of the rest of the nation over the weekend.

An arctic front is expected to pass through the Houston area, ushering in the coldest air of the season for the beginning of next week.

Cold air originating from the Arctic Ocean will be dislodged and sent to the continental United States this weekend.

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...

The Arctic is increasingly characterized by geopolitical and military tensions. President Trump's aggressive engagement ...

There will be occasional mountain snow showers over the next few days, but temperatures in Denver will warm up in the ...

Mars will seem to disappear behind the full wolf moon Monday for many sky-gazers. Throughout January, also look up to see ...