2024 Yes Elementary Classroom Views of Nature Are Associated with Lower Child Externalizing Behavior Problems https://doi.org/10.3390/ijerph20095653 Pearson, Amber L. North America Observational Exposure Students Elementary (K-5) Green space Stress/Anxiety visual green space Nature trees Mental health Well-being School Michigan In 86 U.S. elementary students, greater visible nature—especially trees—through classroom windows was linked to fewer externalizing behavior problems. Objective exposure metrics support design policies for improving child mental health. 2023