This working paper sheds light on the impact of radio programs on the climate change knowledge of local populations in the Congo Basin. We provide an assessment of the change in knowledge of a rural village in the Congo Basin after inhabitants listened to one of the radio programs that were prepared on climate change. The document also provides potential indicators for result up-scaling. After applying a micro-economic model to a case–control experiment, both before and after exposure to one radio program, the results show an increase in knowledge of 22.3% attributable to the radio program. In addition, a series of reactions were recorded from different end users, such as other media, ministries, NGO representatives and researchers, who reacted positively to the broadcasts. We recommend the use of radio programs to increase knowledge and induce behavioral changes with regard to climate change adaptation and mitigation...