The keynote "Why Open Science Promotes Diverse, Just, and Sustainable Research" was given on-site during the “8th Max Planck Symposium for Alumni and Early Career Researchers” at the Harnack-Haus in Berlin, Germany, on July 24, 2023. During the presentation, I gave the students an overview of the importance of Open Science (OS) and how they can incorporate OS practices into their everyday scientific life. Abstract: ... References to all used figures and videos are given. Please feel free to reach out to me if you have any questions.