The term “sustainability” has many meanings. Citizens of Karlsruhe are invited to discuss their conceptions with respect to the development of their city during the Baden-Württemberg Sustainability Days on Friday, April 20, from 15.30 hrs, at Tollhaus. Karlsruhe Institute of Technology (KIT) invites the public to attend the event “Karlsruhe zeigt Nachhaltigkeit” (Karlsruhe shows sustainability) with an information and entertainment program as well as a photo competition. The program is organized by the KIT Humans and Technology Focus, the KIT Energy Center, and the KIT Climate and Environment Center.