Zawacki-Richter O, Cefa B. Is open, distance, and digital education (ODDE) good for the environment? A systematic review of carbon footprint studies. OLJ [Internet]. 2026 Sep. 1 [cited 2026 Sep. 2];30(3). Available from: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/5370