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How Do They Dye The River Green? Tom Rowan Shares The St. Patrick’s Day Secret

The Chicago River is dyed green ahead of the St. Patrick's Day parade in Chicago, Saturday, March 14, 2015. (AP Photo/Paul Beaty)

Tom Rowan joins Pete McMurray and Jane Monzures to talk about the history and secrets of dyeing the Chicago River for St. Patrick’s Day and the family tradition between the Rowans and the Butlers.