Arctic air brings record cold to North Dakota as polar vortex affects millions

A polar vortex has brought extreme cold to the central United States, affecting over 95 million people. North Dakota's capital, Bismarck, recorded a temperature of minus 39 degrees, breaking a 115-year-old record of minus 37 degrees. Schools across several states, including Oklahoma and Minnesota, canceled classes due to dangerous conditions. Wind chills in the Midwest have reached as low as minus 60 degrees, prompting communities to set up temporary shelters for the homeless. In addition to the cold, parts of the U.S. are experiencing heavy snowfall. Kentucky is preparing for a winter storm, while North Carolina has declared a state of emergency as snow and ice are expected.