Last Saturday, the Open Day of the TU Dortmund University took place. The Professorship of Marketing and the Junior Professorship of Marketing were represented with two contributions and gave the visitors insights into the work of the department. In an experiment on the topic of "Using marketing methods to combat food waste", Linda Angenendt allowed visitors to actively participate in the empirical research process and presented excerpts from her current research project. In the afternoon, the focus was on the topic of the "Wärmewende", another current project of the professorship. In her lecture on the question "Does the heating oil tank in the basement make you more independent than the connection to energy grids?", Karen Wesely provided insights into current studies and current challenges in the transformation of the heating sector.