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Today is Tuesday, Dec. 2, the 336th day of 2025. There are 29 days left in the year.

Today in history:

On Dec. 2, 1942, an artificially created, self-sustaining nuclear chain reaction was demonstrated for the first time at the University of Chicago. The experiment led by physicist Enrico Fermi marked the dawn of the Atomic Age.

Vintage Chicago Tribune: The Atomic Age is born at the University of Chicago’s football stadium

Also on this date:

In 1804, Napoleon crowned himself emperor of France in a coronation ceremony at Notre-Dame de Paris cathedral.

In 1823, President James Monroe outlined his doctrine opposing further European expansion or colonialism in the Western Hemisphere. The Monroe Doctrine effectively created separate spheres o

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