Stefan Olsson received his B.A. in Biology and Ph.D. in Microbiology from Lund University, Lund Sweden. Thereafter he received a grant from the Swedish Science Research Council to carry out Post Doc research on nutrient translocation in fungi together with Professor David Jennings at Liverpool University followed with continued grants for his own continued Post Doc research in fungal physiology at Department of Microbial Ecology, Lund University. He received his highest possible Swedish academic degree as Docent (Privatdozent German equivalent, i.e. professor competence) in Microbial Ecology at the Faculty of Science at Lund University. He then got a position as Associate Professor at University of Copenhagen, Denmark and started to commute to Copenhagen 1996-2016 where he taught microbial ecology and started a new type of molecular biology course on master level focused on understanding, instead of remembering. That course attracted top students from the whole university, the whole of Denmark and other European countries. It became especially recommended to students with ambitions to start on a future PhD project. He realized early that science in new areas of interests are heavily dependent on method development thus developing new experimental methods, mathematical methods handling the output of the methods and finally bioinformatic techniques to handle secondary data from other labs has become a leading theme of him.