This article by James Hansen et al. paints a fairly bleak picture of the future, using knowledge of previous glacial-to-interglacial global temperature changes.

This article by James Hansen et al. paints a fairly bleak picture of the future, using knowledge of previous glacial-to-interglacial global temperature changes. It suggest that we are on course for up to 10C warming, becoming a 6th mass extinction event on the same scale as the Permian–Triassic extinction event; 63% of the equilibrium temperature increase would be reached within a century.