2024 Yes The effects of urban green space and road proximity to indoor traffic-related PM2.5, NO2, and BC exposure in inner-city schools https://doi.org/10.1038/s41370-024-00669-8 Matthaios, Vasilios N. North America Observational Modeling Students Elementary (K-5) Middle/Jr High (6-8) Particulate Matter (PM) Nitrogen Dioxide (NO2) Black carbon Other Air pollution child exposure/health particulate matter Environmental monitoring Researchers studied 74 U.S. inner-city schools over 10 years, measuring indoor PM2.5, NO2, and black carbon. Schools farther from major roads and with more green space had lower pollutant levels, highlighting design’s role in reducing student exposure. 2024