Reviewing the existing studies of public perception and drawing analogies from other risk technolo-gies, this paper explores the public positions on research and implementation of geoengineering as a means to combat climate change. The few studies on public attitude show that most people are still not aware of geoengineering and those that are feel either strongly in favor or opposed to this method of adaptation. Furthermore, most respondents of empirical studies perceive geoengineering as instruments of last resort: only if all mitigation measures fail or turn out to be insufficient geoengineering should be considered. These results of the empirical studies were fed into a Delphi workshop with experts for reflecting on the future development of public opinion and for designing a communication and public involvement process that corresponds to the empirical insights gained from the perception studies.
