He is a professor of Administrative Law and the Coordinator of the Environmental Clinic at the School of Law of the University of Barcelona. This Clinic has agreements with Environmental NGOs where students can collaborate. His main teaching and researching area is Environmental Law and, specially, Human Right to Environment and its effective protection. In addition, he is a member of the Executive Board of the Fons de Defensa Ambiental (Environmental Defense Found) which is a Catalan Environmental NGO. Its aim is to provide legal advice to citizen, NGO and social groups in order to defense environment.