MORE: The Arctic is warming twice as fast as the rest of the world, according to NOAA report Here is how melting in the Arctic could have detrimental effects around the globe, according to experts: ...

An Arctic blast is heading towards Denver with wind chills as low as 30 below possible for a 60-hour stretch. Latest U.S.

Treacherous travel across Colorado's mountains on Presidents Day, Arctic blast arrive Monday night in 04:04. Another Arctic blast and several rounds of snow are expected in Denver early next week.

Canada has made a 6 billion Canadian dollar ($4.2 billion) deal with Australia to develop a cutting-edge radar for the Arctic that can detect hypersonic missiles and other threats over the ...