This new chapter will give a comprehensive account of the changing political landscapes and subsequently the changing roles of climate change scepticism in the United States and Germany. It will focus on the consequences of the (further) polarization of the already adversarial knowledge regime in the United States and shows how conservative think tanks used “common-sense” strategies to re-define climate change scepticism as a cultural issue and made it an integral part of the “culture wars” that affect political and public debate. Likewise, Germany has seen significant developments outside and at the periphery of its closed shop. Small think tanks have been able to forge alliance with the new political parties and establish themselves as brokers between national and international fringe actors and have helped to forge alliances between far-right activists and other anti-establishment groups. This has led to a considerable re-imagination and a strategic repurposing of climate change scepticisms as an expression of a wider “anti-elitist sentiment”.