Why more frequent cold blasts could be coming from global warming
Frigid air that normally stays trapped in the Arctic has escaped, plunging deep into the United States for an extended visit ...
The Canadian Press on MSN27m
The polar vortex brings its bitter cold to the Southern US
The plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow on parts of Texas and Oklahoma in the coming days and ...