The "Youth Going Green" project was designed by Mano Europa (Lithuania) together with six partner organisations from Estonia, Poland, Italy, Portugal, Cyprus and Spain in response to a shared, clearly identified need: young people across our communities are increasingly aware that environmental problems exist, yet many lack the concrete knowledge, the motivation and, above all, the practical tools to translate that awareness into sustainable daily habits and into action within their own surroundings. We wanted to bridge the gap between knowing that climate and environmental challenges matter and actually doing something about them at the personal and community level, using the international youth exchange format and non-formal education as the vehicle. On the basis of this need, the project pursued five interconnected objectives. The first was to EDUCATE young people on the topic of sustainability and to give them dedicated space and time to brainstorm and develop new ideas for more sustainable daily habits. The second was to INFORM and INVOLVE young people in understanding the importance of everyday eco-friendly choices and how these choices affect the environment around them. The third was to EXPAND young people's knowledge of the environmental problems that affect them and their communities, by exchanging ideas and concrete examples of how to live an eco-friendly life across different national contexts. The fourth objective was to ENCOURAGE young people to take action by implementing green initiatives locally in their own communities and thereby contributing directly to environmental protection. The fifth was to PROVIDE young people with the knowledge and the practical methods they need in order to turn their ideas and initiatives into reality, so that the impact would continue after the mobility itself had ended. Beyond these five core objectives, the project was deliberately built to deliver on the horizontal priorities of the Erasmus+ Programme. The green dimension was at the very heart of the content and was also reflected in the way the activity itself was organised. The digital dimension ran throughout, in particular through the use of the City Compass application and through the creation of largely digital awareness materials and campaigns, which simultaneously strengthened participants' digital competences. The project also embodied the inclusion and diversity priority, bringing together a group in which a significant share of participants were young people with fewer opportunities, and ensuring that the activity was accessible to participants of diverse backgrounds and abilities. We also set out to achieve a set of personal and transversal development goals for the participants: increasing the mobility of young people beyond their own community and country, raising their cultural awareness and active citizenship through international cooperation, improving their communication skills in English and in their mother tongue, and fostering soft skills such as teamwork, leadership, communication and problem-solving. Underpinning all of this was the ambition to create a genuine European learning experience, in which young people from eight different national realities would discover how sustainability is understood and practised across Europe, build a sense of shared European identity, and return home as motivated multipliers able to inspire others in their communities to adopt more environmentally friendly habits. In defining these objectives we were guided by the conviction that environmental behaviour change is most durable when it is rooted in personal experience, peer exchange and a sense of ownership, rather than in abstract information alone. This is why the project was framed not as a lecture-based learning event but as a youth exchange built on non-formal education, in which young people would themselves be the protagonists – brainstorming, experimenting, presenting, reflecting and planning their own initiatives. We wanted each participant to leave not only with new knowledge but with a tangible idea of what they personally could do differently, and with the confidence and the practical method to do it. The objectives were therefore deliberately sequenced from awareness, through understanding and knowledge, to action and the means of sustaining that action. The objectives were designed to serve the needs of the participating organisations as well as the young people. As non-governmental youth organisations working across Europe, the partners share an interest in strengthening their ability to design and deliver inclusive, green, high-quality international youth work. By achieving the participant-level objectives through a well-managed transnational partnership, the project also aimed to build the partners' competence in cooperation and in inclusion of young people with fewer opportunities.