Friday 4/6 – Thursday 4/12

7 SATURDAY “The Chicago region is one of a handful of metropolitan areas in the world that has a high concentration of globally significant natural communities,” say the folks at Chicago Wilderness. The group is a partnership of 124 public and private organizations devoted to restoring and managing 200,000 acres of protected natural land from northwestern Indiana to southeastern Wisconsin. Today CW chair John Rogner, World Resources Institute head Jonathan Lash, and former EPA administrator Carol Browner will examine how CW has become a model for environmental activism at a lecture called “Earth on Edge: Reclaiming Urban Ecosystems.” It’s part of the Field Museum’s four-day It’s Wild in Chicago festival, which includes interactive exhibits and behind-the-scenes tours. The lecture is at 4:30 at the museum, 1400 S. Lake Shore Drive (312-665-7400). Admission is $18, $15 for students and teachers; registration begins at 3:30.

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Matters” series. Call 773-384-3154.