The “5th World Symposium on Sustainable Development at Universities” (WSSD-U-2020) will focus on „Universities, Sustainability and Society: Supporting the Implementation of the Sustainable Development Goals”, and will contribute to the further development of this fast-growing field.  As the slogan of the event suggests, we are as always looking for practical experiences on Education,  Research and Extension  (the so-called 3rd Mission,  whereby universities outreach to society as a whole (e.g. to local communities,  organisations, industry and other groups)  with the  aim of documenting such experiences and making them available to a wide audience.