A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

We start the following work week with a polar vortex. This will bring in unseasonably cold air to the region and wind chill ...

Tens of millions of Americans have been put under weather warnings as deadly winds head for the West Coast and an Arctic blast freezes the East. Officials have warned residents in Southern ...

Another arctic blast will bring high winds and blustery cold to end the work week. Wind speeds will pick up late this afternoon and evening ahead of a strong cold front. Westerly winds could gust ...

Then, prevailing winds swept the soot away and dumped it off elsewhere. Where? Apparently, in the arctic for one. Ice samples reveal that huge amounts of pollution and black soot were deposited in ...