Document on the ethical aspects of the science and society dialogue. Bioethics and Law Observatory, University of Barcelona. May 2018. Coordinated by María Casado and Pere Puigdomènech. Authors are: Blanca Borquez, María Casado, Michele Catanzaro, Fernando García López, Itziar de Lecuona, Manuel López Baroni, Rosina Malagrida, M.ª José Plana and Pere Puigdomènech, with the participation of other researchers.