Transitioning towards a more sustainable society, biological desulfurization could play a major role in the future. When gas and oil extraction decreases, but the world’s need for sulfur as a base for fertilizer and fungicides remains, a more sustainable approach to extracting sulfur is necessary. In this episode PHD candidate Kestral Johnston and one of her supervisors, Jan Klok, tell us all about their discoveries and progress in biological desulfurization. This research project is initiated by Wetsus, where business and science come together in a collaboration with Paqell, Shell, Paques, Wageningen University, TU Delft and the University of Amsterdam.