"Sea level is rising much faster and Arctic sea ice cover shrinking more rapidly than we previously expected. Unfortunately, the data now show us that we have underesti­mated the climate crisis in the past." Professor Stefan Rahmstorf, Professor of Physics of the Oceans and a Department Head at the Potsdam Institute for Climate Impact Research in Germany. "Carbon dioxide emissions cannot be allowed to continue to rise if humanity intends to limit the risk of unacceptable climate change. (…)