The recent IPCC report is clear: We need a dramatic change in the design of the global economy to avoid climate catastrophe and we need it now.
The International Energy Agency estimates that to stay within 2 degrees Celsius of atmospheric warming, the global economy will have to avert emitting the carbon from roughly 80 percent of world’s proven reserves of fossil fuels. This is called unburnable carbon. It does not include the carbon from shale oil and gas being extracted through fracking.