This study aims to investigate how the subject of ‘sustainable environment and climate change’ is handled as a popular science subject in children’s literature. To this end, among 346 children’s books in the 2-12 age group published by TUBITAK, 25 books on the subject of ‘climate change and sustainable environment’ were determined as the sample of the study with criterion sampling, one of the purposeful sampling methods. Adopting a qualitative study design, the data were analyzed through document analysis. Based on the analysis, it has been determined that all of the books include sustainable environment and climate change issues. The findings revealed that the subject of ‘sustainable environment and climate change’ was handled in the books in line with the developmental characteristics of the target group of children. It has also been determined that the books examined include the causes of climate change and what needs to be done for a sustainable environment. Taken together, the findings of this study have a number of important implications for educating the children on the issues of sustainable development and climate change through popular science books.