Hans Joachim (‘John’) Schellnhuber currently serves as the 12th IIASA Director General. Prior to joining IIASA he led the Potsdam Institute for Climate Impact Research (PIK) from 1992 to 2018 as their Founding Director. He also served as Research Director of the Tyndall Centre in the UK from 2001 to 2005. Since 2019, Schellnhuber has been focusing his scientific work and communication skills on the transformation of the built environment, with a specific emphasis on the climate restoration potential of regenerative architecture. In this context, he established Bauhaus Earth as a not-for-profit company and helped to create the New European Bauhaus initiative. He acted as a scientific advisor to a number of eminent public and religious leaders, institutions and government bodies and contributed in various ways to the Intergovernmental Panel on Climate Change (IPCC), which was awarded the Nobel Peace Prize in 2007.