In informal science learning we often have to face the “no-show” of teenagers. It is difficult to get in touch with them, and they often seem to shy away from the term “science”. Once they do visit places of informal science learning, they often have a good time, but how can we get them there in the first place? Or should we rather meet them at the places where they already hang around? Teenagers are not a homogeneous group. The reasons why they do not show up vary in different contexts, different social groups or different “traditions” of science learning. How can we address these different aspects when conceptualising attractive informal science learning activities for teenagers? In this session we will share experiences and discuss different examples of youth involvement together with the audience.