This is a project that aims to raise awareness about global warming and climate change: one of the most important problems of the 21st century. Human behaviour is one of the root causes. "And if the climate changes... what happens?" is our bid to raise awareness in the educational community and achieve a commitment to the appropriation of the immediate environment in order to respect it, understand it and make it their own, while improving key competences and learning. Enriched by its European dimension, it will enable pupils to discover that consumption leads to the depletion of resources and continuous pollution which makes it increasingly difficult to manage them and has a greater impact on the quality of life of living beings. Although it is eminently scientific, at the same time, it will improve communicative competence, learning to learn and personal initiative. The knowledge and interaction of international students will also enhance understanding and respect for other cultures.