(via World on track for worst-case warming scenario | New Scientist)

“The bleak image is brought home when emissions over the last few decades are plotted against projections for the future. Models predict how much the world will warm depending on how much we emit in future. Scientists typically look at four different possible futures, ranging from an uber-green society to a worst-case scenario, in which no action is taken to combat global warming. Le Quéré and her colleagues show how today’s emissions are near-perfectly in line with the worst-case scenario. This means that, according to scientists’ best estimates, the world will be as much as 5.4 °C warmer in 2100 than it was before the industrial revolution.”