The idea of the project was to allow young European teenagers to reflect, by creating a common culture, to develop a cooperative work based on the situations and experiences lived by each of them. This work was an opportunity for the young people to discover their differences but also to highlight what brings them together, particularly in terms of culture but also their place in society and their concerns as young citizens. The objective was to allow the young participants to understand the concepts of eco-citizenship and sustainable development in the richness of interculturality, and to raise awareness of the role they have to play in tomorrow's society. Thus, the project aimed to give the participants the means to play their role as eco-responsible citizens and to become actors, particularly in terms of awareness-raising and peer-to-peer transmission. The objectives of the project were therefore - to develop the participants' awareness of their way of consuming and its environmental, economic and social impact - to build/create a shared culture based on responsible consumption - to discover practices and ways to consume responsibly and act for a better environment - to acquire tools to become an actor in the collective awareness