The Director of the Potsdam Institute for Climate Impact Research, Ottmar Edenhofer, presented his proposals in Baku on Thursday on how carbon dioxide removal (CDR) from the atmosphere can become marketable and, above all, profitable. He proposes so-called „clean-up“ certificates which, in addition to the conventional CO2 levy of the European Emissions Trading Scheme (ETS), include the promise to remove the emitted CO2 from the atmosphere at a later date. Edenhofer explained his ideas at COP29.