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* An article on Page 1 Wednesday about summer tourism in Illinois incorrectly stated that Lincoln Park Zoo required reservations in 2019. Reservations were required in 2020.
* A story Wednesday misstated the number of nuclear plants Exelon operates in Illinois. The correct total is six.
The Tribune regrets the errors.
Publishing information quickly and accurately is a central part of the Chicago Tribune’s news responsibility and a value shared in all our publications. Our editorial code of principles governs professional behavior and journalism standards. Everyone in our newsroom must agree to live up to this code of conduct. Download the file.
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