Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

Ice builds up along Lake Michigan at North Avenue Beach as temperatures dipped well below zero on January 6, 2014 in Chicago, Illinois.
Ice builds up along Lake Michigan at North Avenue Beach as temperatures dipped well below zero on January 6, 2014 in Chicago, Illinois.

    JUST WATCHED

    Climate change behind record cold?

MUST WATCH

Climate change behind record cold?

CNN's Hala Gorani, in for Christiane Amanpour, speaks with Climatologist Richard Alley about the record U.S. cold.

Climate change behind record cold?

CNN's Hala Gorani, in for Christiane Amanpour, speaks with Climatologist Richard Alley about the record U.S. cold.