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Environment

Lincoln Park Zoo hosts conference on reintroducing endangered species

Officials expected to rename park in honor of activist Marian Byrnes, who saved prairie from becoming CTA bus barn

Illinois residents see air pollution risks from 2 facilities

Durbin, Duckworth, Foster want probe of Trump EPA response to Sterigenics cancer risks

What is ethylene oxide, the cancer-causing chemical used by Sterigenics and other Chicago-area companies?

The city needs to get to work on cleaning up its recycling program

Should Chicago ban plastic straws? The questions that may be on your ballot

Illinois pollution board proposes new emissions rules in Dynegy coal saga

After 'long legacy' of poor water quality, Humboldt Park beach sees major improvement

Illinois slaughterhouse biggest nitrogen polluter of waterways in U.S., study finds

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