The plunging polar vortex is bringing subfreezing temperatures to some of the southernmost points of the U.S. A forming storm system is threatening to dump snow on parts of Texas and Oklahoma, while communities in Louisiana and Florida may see frigid cold.

Kentucky’s governor says investigators will find out what caused a deadly explosion that ripped apart a Louisville factory.

A top Ford executive says the company has reached the limit of how much money it will spend to get a contract agreement with the striking United Auto Workers union.