On Thursday 30^th September 2021 Marek Tuhý successfully completed his PhD and defended his PhD thesis entitled “Wildfires in polluted areas: mineralogical transformations and remobilization of metal(loid)s“. The thesis was supervised by prof. Vojtěch Ettler and reviewed by Dr. Isabel Campos (University of Aveiro, Portugal) and Dr. Tomáš Navrátil (Institute of Geology, CAS). Marek will continue as a Junior Researcher affiliated with the Center for Geosphere Dynamics. Congratulations!