This book represents one of the outcomes of the World Complexity Science Academy (WCSA) Conference held in Rome in the Autumn of 2018, titled "Turbulent Convergence". It reflects the fruitful discussions developed by a number of papers presented at the event by scholars from several different countries. In particular, the volume represents a great effort on the part of the WCSA to gather research carried out in Europe and beyond and to provide a forum for valuable discussion at international level in a cosmopolitan way.