“Circular Conferences” is an innovative format, developed and implemented by ESTA to connect circular economy, innovative policies and relevant socio-environmental topics (urban policies, food, energy. Mobility) In the conferences some international and italian experts were hosted as speakers: Robert Costanza, ecological economist and Professor of Public Policy at the Crawford School of Public Policy at The Australian National University, Mariana Mazzucato, economist,Professor in the Economics of Innovation at the University of Sussex, Pavan Sukhdev, environmental economist, Special Adviser and Head of UNEP’s Green Economy Initiative, was also the Study Leader for the ground breaking TEEB (The Economics of Ecosystems and Biodiversity), Gianni Silvestrini, Italian researcher of National Research Council in the fields of solar technology and energy policy, General Director at the Ministry of the Environment (2000-2002), Gianfranco Bologna, Scientific Director of WWF Italy.