Aristide is Chair of Circular Economy and Urban Metabolism at the Université Libre de Bruxelles. Within this framework he attempts to build bridges between the academia, public administrations and “circular” actors in order to accelerate Brussels’ transition towards a more circular economy and metabolism. During the last years, he has advised and has acted as a external consultant for a number of local, regional and international administration and organisations on the topics of urban metabolism and circular economy. Finally, Aristide co-created the non-profit organisation and open-source urban metabolism platform Metabolism of Cities. This initiative aims to promote urban metabolism by bringing together people, data and publications in one central place and developing free online tools for teaching and research.