Researchers and practitioners are searching for alternative ways to communicate climate change and other environmental problems beyond the dominant approach of shock and fear. Using humor is one such an alternative, but can we laugh in the face of environmental danger? This study investigates, through a systematic narrative review, the existing interdisciplinary literature of humor in climate change and environmental communication. The findings are organized into four themes. First, we present the overall effects of humor on environmental awareness, perceptions, learning and behaviors. Next, the types of humor are analyzed, such as satire and irony. Third, we explore what forms of communication are most dominant. Finally, we show that most studies target audiences from the general population, with little focus on specific segments of the population. To conclude, we evaluate the benefits and challenges of using humor in climate and environmental communication and make suggestions for further research.