If you're looking for peer-reviewed scientific literature and research about or in support of nature-based education for children, then the research library from NAAEE and Children & Nature Network is a great place to start. The library provides detailed summaries and citations for peer-reviewed research articles as well as links to those that are publicly available, or to publishers’ websites when not publicly available. Access to the library is free, and users can search/filter by a variety of criteria, including keyword, author, start/end year, population, methodology, outcomes, and themes.