Why Have U.S. Carbon Dioxide Emissions Plummeted?

Why Have U.S. Carbon Dioxide Emissions Plummeted? / Michael Levi, Energy, security and climate, 25/09/2012


U.S. carbon dioxide emissions for January-May are down six percent from 2011 to 2012. Headlines have highlighted the fact that emissions from January-March hit a twenty year low. What explains the shift? That question has been the subject of intense debate. John Hanger argues that 77 percent of that decline can be attributed to the shift from coal to gas. The folks over at CO2Scorecard, looking at January-March data, put that number at a more modest 21 percent. These are drastically different figures. What number should we believe?…

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