Research suggests that plane travel to and from ESEB events likely contributes >90% of their carbon emissions. Therefore, as a part of ESEB‘s pledge for climate-neutral congresses, the 2027 edition is, for the first time, a Hub Congress. By pioneering the organisation of a Hub congress, ESEB wishes to act as a role model amongst scientific societies. The goal is to establish ESEB as a scientific community that is proactive and innovative in its response to the climate crisis, and to inspire its members to be more mindful of the environmental impact of (academic) travel.