Will new EPA regulations allow a Wisconsin power plant to dump more toxic metals into Lake Michigan? Chicago Tribune reporter Michael Hawthorne explains.

Chicago prepares for stepped-up deportation raids. R. Kelly is nabbed by federal agents. Mayor Lori Lightfoot halts water meter installations over lead concerns. And an alligator evades capture at Humboldt Park Lagoon.

Why so many Chicago homes are testing high for lead in their water – and what you can do about it.