Background of the project:Stakeholders in healthcare and science increasingly demand the rapid integration of teaching content on planetary health (PIH) into the curricula of all the healthcare professions. In medical education, such topics are currently only covered inadequately and are mostly limited to elective courses.Why was the project initiated?In order to reach all medical students in the sense of a learning spiral and promote an interdisciplinary understanding of planetary health, a longitudinal mosaic curriculum is being developed that introduces aspects of planetary health throughout the entire course of study. We share the first experiences of the start of this project as an example to inspire similar activities elsewhere.Implementation of the project:We mapped all the courses at the Faculty of Medicine in Würzburg and compared them with existing learning objectives on planetary health topics from the National Competency-Based Catalog of Learning Objectives for Medical Education. We then identified curricular injection points and held consultations with teaching staff and course coordinators from 26 different specialities in order to integrate the respective contents into the courses and, if necessary, develop new content. An overview of all curricular injection points with the corresponding topics, learning objectives, and teaching and examination methods is under development.Evaluation of the project:The lecturers exchanged ideas with the project team of the teaching clinic of the Faculty of Medicine; further networking meetings to coordinate a learning spiral are to follow. The lecturers were asked to provide structured learning objectives in the categories “knowledge”, “attitudes”, “skills”, and “confidence” on the topics integrated into the courses. Oral as well as written evaluations using Evasys®questionnaires among students and lecturers are planned.Final overall assessment, outlook:Planetary Health topics have been introduced in several courses following our intervention. In the context of a learning spiral, teaching staff from further medical disciplines will be contacted so that more perspectives can be highlighted at different points in the curriculum. In addition, interdisciplinary teaching formats will be developed in order to take the complexity of the interrelationships into account.