TALLAHASSEE, Fla. (WTXL) -- This Hot on the Web could make you green with envy.
Check out this time lapse video from this weekend, showing how crews dye the Chicago River green each year in celebration of St. Patrick's Day.
It's a tradition that dates back more than four decades, and it all started by accident.
Click the thumbnail to watch the video and learn more about the green river.
