Sustainable behavior is a lot about Psychology: one have to set long term goals and still take short term decisions every day (how to eat or travel). Sustainable behavious are the topic of research of serveral of the department‘s groups. Yet, also the way the deptartment manages resources should reflect sustainability goals. Therefore the department has developed and formally decided on a guidline [link] for CO-2 reduction. Particularly in regard to flight travel (replacement by ground travel, virtual meetings) and events/congresses (carried out as green events) the guideline sets goals to make sustainable behaviors the norm.