This twinspace is the platform of communication and collaboration for the Erasmus KA229+ project entitled TILT (Together Investigate and Learn, to Tackle climate issues). The project is carried out by secondary schools in France (co-ordinator), Spain, Italy and Greece. It aims to raise awareness on the issue of Sustainable Development that empowers people to change the way they think and work towards a sustainable future. Every partner school needs to strengthen their Education for Sustainable Development (ESD) inside their curriculum, but also to develop intercultural contacts. The project allows them to set up European school exchanges which form the base of the ESD strategy: act locally and think globally. Individuals will be encouraged to be responsible actors who resolve local challenges, but the project will also provide a wider awareness of climate issues that considers cultural diversity and contribute to create a more sustainable world.