Most of Wisconsin has breathed cleaner air over the last several years, according to the American Lung Association. But as part of its annual national report card on the state of air quality, the group gave failing grades to six counties along Lake Michigan over smog pollution.

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Enbridge Energy faces millions of dollars in fines after environmental regulators said the Canadian company failed to promptly report a 2019 leak from a pipeline near Fort Atkinson in southeast Wisconsin.

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The Department of Natural Resources in both Wisconsin and Minnesota are working with federal officials to try a new method to capture and remove invasive carp from the Mississippi River.

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Wisconsin environmental regulators have reached an agreement with the state's largest business group and won't release results of water sampling for unregulated PFAS chemicals until the courts decide whether state law allows for testing for the manmade compounds.

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Fisheries crews from Wisconsin and Minnesota plan to gather near La Crosse next month and attempt a new technique to remove invasive carp from the Mississippi River.

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A new study finds that historic sources of mercury pollution are driving higher concentrations of the contaminant in sport fish that live and feed in the Duluth-Superior harbor. The results indicate contamination from long ago still holds risks for coastal areas of the Great Lakes.

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A factory farm in Kewaunee County has agreed to pay the state $144,000 to resolve pollution violations.

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A national hunting group filed a lawsuit Tuesday to force an immediate start to Wisconsin's wolf season before President Joe Biden's administration restores federal protections for the animals.

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Companies looking to mine copper, gold and silver in Wisconsin will face higher costs and have to work around an extensive list of off-limit areas under new rules the state Department of Natural Resources policy board overwhelmingly approved Wednesday.

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Gov. Tony Evers' administration announced Friday that it wants to hire outside attorneys to potentially file lawsuits over PFAS contamination.

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