The ERCIM News n.123 is now available online with the special theme devoted to the application of ICT technologies to the blue growth field.  The special theme includes machine learning and artificial intelligence, cyber-physical systems of systems, IoT/M2M communications, space communications and observations, big data infrastructures, unmanned and autonomous systems. This theme has been co-edited by Alberto Gotta from ISTI-CNR and by John Mardikis from EPLO - Circular Clima Institute and includes several contributions by our colleagues: Leonardo Candela, Pietro Cassarà, Erina Ferro, Pasquale Pagano, and Gabriele Pieri