The footprint of academic travel is as big as the footprint of a country like Iceland. As a malaria researcher, Teun Bousema has several field study projects but is a strong advocate for reducing flights were ever possible. Monitoring his footprint from his research and the analyzing the footprint from meetings and grant interviews,he published several papers on why we need to reduce our footprint from flying. He started several actions in his institute and beyond to fly less and make academic research more sustainable.