Miroslaw Janik is a researcher at the QST National Institute of Radiological Sciences, Chiba, Japan. Before joining the research staff at QST/NIRS in 2007, he worked at the IFJ PAN, Krakow, Poland. His main research interests include environmental radon and thoron, the modeling of radon transport in soil, and machine learning algorithms. He received a Ph.D. degree in physics from IFJ PAN in 2006. He is the author or co-author of over 100 scientific and conference papers. He was awarded a Fellow of the Japan Society for the Promotion of Science.