residential buildings. the storm caused flooding in parts of havana and several provinces. we ll continue to follow that story. weather heading into the united states. more than 50 million people in the midwest and south are facing heavy snowfalls, freezeing storms and blizzards. the national weather service says several states may see the coldest air in generations. bundle up. now, to south korea, well known for the pop culture exports like k-pop, k-drama, but this time it s by a korean company dominating music charts, youtube, the world and your mind. you probably can t escape it. love it or hate it, baby shark is here to say. we have the report. reporter: if you have young children, this probably isn t the first time you are hearing this song. baby shark doo-doo doo-doo