Teenagers all around the world are looking up to Greta Thunberg, the 15-year-old Swedish girl who calls her peers on action. Most of them even marched on 15th March during the Friday for the Future. But what are they actually doing in their everyday life in order to help save the planet? In this short project students will participate in a 21-day zero waste challenge. They will set up a list of actions to take. Each day they will take pictures or record short videos in order to share what they are doing with their foreign partners. At the end of the project they will have experienced different kind of possibilities of reducing their impact on the environment and, hopefully, they will continue to adopt more environmentally friendly habits.