US carbon emissions fell in 2012 to their lowest levels since 1994 but were expected to rise by nearly 3% in 2013. And sure enough 2013 carbon emissions were up significantly in the first 4 months of 2013, when compared to the same period of 2012.
But since April ended, carbon emissions for May, June, and July have been lower than in the same months of 2012. The lower emissions of the last 3 months creates the possibility that carbon emissions may not be after all higher in 2013 than they were in 2012. That would be a welcome surprise.