"2024 Chicago River Dye: A 90-Second Time-Lapse"

The Chicago River was dyed green by the plumbers' union in celebration of St. Patrick's Day, with a time-lapse video capturing the remarkable transformation in just 90 seconds. The tradition, dating back to 1961, involves a secret environmentally friendly dye and remains a closely guarded process. The annual event coincides with the city's St. Patrick's Day parade and is a highly anticipated spectacle in downtown Chicago.