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GRAPHIC: Iowa’s hog production leads the state in greenhouse gas emissions from manure management

Swine operations are responsible for 77% of greenhouse gases generated by manure management in Iowa, according to 2020 data, the most recent available, released by the U.S. Environmental Protection Agency (EPA). By 2020, large concentrated animal feeding operations, or CAFOs, had increased nearly fivefold over the past two decades, according to a study released that […]