The US is about to get real cold again; blame it on global warming

Climate change is reducing the gap between North Pole temperatures and those to the south, weakening winds in the upper atmosphere

Because the world is getting warmer, it’s getting colder, too.
 
Crazy as that sounds, there’s an explanation in the northernmost corner of the planet, where temperatures are rising twice as fast as anywhere else. That affects the jet streams churning through the upper atmosphere, and results in more weird winter cold snaps.
 
The ones that descended in early January on the US south brought snow and to deep-freeze amateurs in cities including Birmingham, Alabama, and Oxford, Mississippi. Another one expected as early as next weekend may push readings more than 15 degrees Fahrenheit (8 Celsius) below average across