Dr John Schellnhuber (PIK)-civil society and investors Post COP21

So you have to look, if you drive up the global mean temperature by human interference, where are the big accidents, so to speak, in the system. When will the Greenland ice sheet start to melt, and possibly in an irreversible way? When will the Amazon rainforest be transformed into a steppe, a savanna, whatever? and so on and so on.