Workshop in collaboration with Cooperativa Muratori e Cementisti di Ravenna. Speech given by Giacomo Vaciago, Professor at the University of the Sacred Heart and President of REF Ricerche. Participants: Dario Foschini, CEO of Cmc; Mauro Lusetti, National President of Legacoop; Roberto Seghetti, Journalist. Introduced by Massimo Matteucci, President of Cmc.