Translations:Greenhouse gas emissions by the United States/16/en
After carbon dioxide, the next most abundant compound is methane, though there have been methodological differences in how to measure its effects. According to a 2016 study, US methane emissions were underestimated by the EPA for at least a decade, by some 30 to 50 percent. Currently, the US government is working to reduce methane emissions in the agriculture, mining, landfill, and petroleum industries.