Jan Koziar was born in 1943, Wola Mielecka, Poland (then occupied by the Germans). Graduated from the University of Wroclaw - Faculty of Natural Sciences in geology (1966). Then hired as a researcher-lecturer at the Institute of Geological Sciences, University of Wrocław. From 1970 he began to develop the expanding Earth theory. Removed  from the university for political reasons in 1982. Returned to work in 1989, working still in the  field of geotectonics. In 2001 – 2008 he  gave  the course lectures “Expanding Earth with basic geotectonics”. Pensioned in 2008, Koziar continues researching into the Expanding Earth theory in Wrocław, where he established the Wrocław Geotectonic Laboratory.