Hands-on science, to try out, to experiment, to discuss. Passage 13 opens its doors again and invites young and old with about 20 partners from the region to various participatory activities from the world of research Nutrition of the future - why is the algae healthy and also tasty? Taking to the skies with a flight simulator, learning how much CO2 is in what food, and the media workshop "Make a green, make a good TikTok!", to name but a few. Various young researchers from all over Germany will also be guests, presenting their own experiments and projects.