For 60 years, Chicago has turned its downtown river green to celebrate St. Patrick's Day. The annual tradition actually has its roots in a big problem for the city: sewage.
For 60 years, Chicago has turned its downtown river green to celebrate St. Patrick's Day. The annual tradition actually has its roots in a big problem for the city: sewage.
For 60 years, Chicago has turned its downtown river green to celebrate St. Patrick's Day. The annual tradition actually has its roots in a big problem for the city: sewage.
For 60 years, Chicago has turned its downtown river green to celebrate St. Patrick's Day. The annual tradition actually has its roots in a big problem for the city: sewage.
For 60 years, Chicago has turned its downtown river green to celebrate St. Patrick's Day. The annual tradition actually has its roots in a big problem for the city: sewage.