ClimateWire: U.S. EPA's addition of oil, gas and coal methane emissions to its online greenhouse gas tracking tool revealed an 82.6-million-metric-ton increase in carbon dioxide equivalents over numbers from the previous year, when those figures were not available.
EPA published data yesterday for 2011, adding 12 new sources from the reporting program since last year's 2010 figures. Although carbon dioxide is a much more abundant greenhouse gas than methane, the latter makes a far bigger impact on climate...