BBC: Global emissions of carbon dioxide may be showing the first signs of a "permanent slowdown" in the rate of increase.
According to a new report, emissions in 2012 increased at less than half the average over the past decade.
Key factors included the shift to shale gas for energy in the US while China increased its use of hydropower by 23%.
However the use of cheap coal continues to be an issue, with UK consumption up by almost a quarter.
The report on trends in global emissions has been...