Bone-chilling cold is gripping much of the country. Some areas are seeing their lowest temperatures in 20 years. Authorities already blame the cold for at least 13 deaths. This phenomenon is the result of a polar vortex – a mass of frigid swirling air from the north. Stephanie Elam takes a look at some of the worst weather in America.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
Questions or comments? Send an email
Want to know more? Go behind the scenes with