World Science Day for Peace and Development is celebrated each year on 10 November. Città della Scienza as an “ONG in relation with Unesco”, takes part to this initiative in particular for what concern Naples activities. The event will involve all actors (universities, NGOs, CVOs, etc) who work in international cooperation contributing to peace and development processes. The Day will have a particular relevance in Naples since it has been considered as a crossroad of different cultures and civilizations and the city will be involved in great international events, which will be hosted in Naples, such as the World Urban Forum in 2012 and the Forum of Cultures in 2013. World Science Day for Peace and Development is celebrated each year on 10 November. This celebration aims at reminding both the science contribution for peace and sustainable development and responsible use of science in service of society. Since the beginning, real projects and many connections have been made in order to fill the gap between science and society. Institutions, no governative bodies, media, research Institutes, universities have been working to show how the science and scientific progress could be useful for peace and development. The theme of 2011 World Science Day for Peace and Development focuses on the role of science, ‘Towards green societies: equity, inclusiveness, participation’. Città della Scienza as an “ONG in official relation with Unesco”, takes part to this initiative in particular for what concern Naples activities. The event will involve all actors (universities, NGOs, CVOs, etc) who work in international cooperation contributing to peace and development processes. The Day will have a particular relevance in Naples since the city has been considered as a crossroad of different cultures and civilization and it will be involved in great international events, which will be hosted in Naples, such as the World Urban Forum in 2012 and the Forum of Cultures in 2013. More than 30 projects will be presented during the morning with the presence of relevant personalities, among which Daniel Schaffer from TWAS (Third World Accademy of Science), Rosalio Trefiletti President of Federconsumatori, Luigi De Magistris Mayor of Naples and Giovanna Del Giudice Delegate to International Cooperation at the Province of Naples. The day will be opened by Vittorio Silvestrini President of Città della Scienza and will be closed by Vincenzo Lipardi with the signature by all participants of a common declaration to enhance the role of science in International Cooperation and for the Intercultural Dialogue