The knowledge platform floating on Braunschweig’s Oker river provides visitors with information in the form of posters which focus on the fields of education, water-treatment technologies and ecological sustainability. “Sauberes Wasser durch Diamant” (Clean water through diamond) is the topic with which the Fraunhofer IST is participating; on the raft, the institute provides an overview of its expertise in the field of water treatment by means of diamond technology. The floating dock will remain open to the public until end-October.