2024 Yes Assessing indoor air quality of school environments: transplanted lichen Pseudovernia furfuracea as a new tool for biomonitoring and bioaccumulation https://link.springer.com/article/10.1007/s10661-017-6076-2 Protano, Carmela Europe Observational Elementary (K-5) Heavy metals Indoor air quality School Heavy metals Persistent organic pollutants Biomonitoring Lichen Lichen P. furfuracea was used to monitor metals and PAHs in five school environments. Indoor and outdoor exposures showed it is effective for detecting pollution differences, offering a cost-effective, child-friendly air quality monitoring method. 2017