Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades the nation ... Advisories and Extreme Cold Watches are also in ...

Americans have been warned to brace for more winter storms as Arctic winds are set to dump more ice and snow amid freezing temperatures.