Biermann,
F.
Potsdam Institute for Climate Impact Research and Cooperation Partners;
Altner,
G.
Potsdam Institute for Climate Impact Research and Cooperation Partners;
Simonis,
U.E.
Potsdam Institute for Climate Impact Research and Cooperation Partners;
von Weizsäcker,
E.U.
Potsdam Institute for Climate Impact Research and Cooperation Partners;