The climate issue requires both scientific analysis and political decision-making. Perceiving climatic impacts, possibilities and necessities through the lens of political interests will hardly achieve long-term success. Quite to the contrary, a dispassionate scientific analysis is needed to present the various options in detail and thus to enable normative political decisions. To this end, climate research is in need of self-reflection. Fundamental scientific values such as contradiction, openness, sustainability, independence of individuals and falsification, enable science to unfold its potential as an action-guiding knowledge provider. For this purpose – Hans von Storch (GKSS Research Centre and) and Nico Stehr (Zeppelin University, Friedrichshafen) explain – the natural sciences need input from the social sciences, cultural studies and a discerning public.