RaCeN results on the work develop between 12 French partners that for the second time work on only one project to have a bigger impact on the public. It is not only an event, is a preparation, discussion with all partners before the venue, and it is an observation, an analysis of the different proposition after the 25th September. The aim is to offer large public and researchers an unique opportunity to directly meet and get closer to one another. Events will be organised in the cities of Strasbourg, Mulhouse, Besancon, Dijon, Lille, Rennes, Brest, Bordeaux, Toulouse, Angers, Montpellier, Nimes, Lyon as well as Paris and the region Ile de France. All the events will focus on the researchers as human beings: their will act advisers during the hands on experiments and demos, will be available to all the potential questions raised by the audience and in particular share with the public interests and fun, and act as "normal citizens" while unveiling the magic of their work to the participants. We chose to mobilize the PhD student to show them the necessity to discuss with citizens, to prepare these researchers of tomorrow to participate at the debate science and society, and to show at young visitors that their big sister or brother engage in a career in research.