In 1993, Verschuuren received his PhD degree ‘cum laude' on the basis of a dissertation on the Constitutional Right to Environmental Protection . Since 1993, he has been employed at the Tilburg University Faculty of Law. In 1999, he obtained the position of full professor of European and International Environmental Law at that university. He is a visiting professor at the law schools of the University of Connecticut ( U.S.A. ), Leuven University ( Belgium ), and North West University ( South Africa ). Since 2007, Verschuuren is a part time judge at the District Court of Arnhem for environmental criminal cases.