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Worst of the Worst

Who Were the Worst of the Worst Climate Polluters in 2022?

EPA’s annual greenhouse gas report for large emitters show some facilities slashed their emissions while others polluted more than ever.

By Phil McKenna

 The U.S. Steel Corporation Gary Works, Tennessee St. gate, in Gary, Indiana, in September. The Gary Works was the largest greenhouse gas emitting iron and steel plant in the U.S. in 2022 with 10.3 million metric tons of carbon dioxide emissions. Credit: Vincent D. Johnson / for Inside Climate News

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