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The report argues that US manure management emissions, particularly from dairy and swine farms, are likely 40% higher than EPA estimates due to the consolidation of livestock into larger farms using wet storage systems. While anaerobic digesters are the most common mitigation tool, the authors find them expensive and less effective than often claimed. Instead, the paper identifies solid-liquid separation, acidification, aeration, and cover-and-flare systems as more cost-effective alternatives, though these require further large-scale piloting and financial support to achieve widespread adoption.