River Green for a Day

It all started with Plumbers Union Local 130 about 60 years ago and the city of Chicago is still dyeing the Chicago River green in celebration of St Patrick’s Day. Probably not the most environmentally-friendly way to celebrate, but it does stand out:

The Chicago River as it flows through downtown after it was dyed green in celebration of St. Patrick's Day on March 13, 2021.
Scott Olson / Getty Images

Happy St Patrick’s Day!