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Did You Know!

🏙️ Chicago briefly had the world’s first and only nuclear reactor—under a football field

In 1942, beneath the stands of Stagg Field at the University of Chicago, physicist Enrico Fermi and his team built the world’s first nuclear reactor, called Chicago Pile-1. This secret experiment marked the birth of the atomic age—right under a university football stadium, with no radiation shielding beyond graphite bricks.