Associate Professor Sierra Húnter of Political Science and member of the Research Group in Local Studies (GREL) at the University of Barcelona. Her research focuses on metropolitan governance, urban policies and local government. His latest research project deals with citizen participation in the metropolitan area of Barcelona and he is currently leading a comparative project on metropolitan governance in Spain. She is a member of the Advisory Board of CIDOB’s Global Cities Programme and Commissioner for the multilevel metropolis of the Barcelona Metropolitan Strategic Plan (Barcelona Tomorrow Plan).