Wissen macht Ah! is a German television programme produced by WDR. It was first broadcast in Germany on 21 April 2001. on the first channel (das Erste) and simultaneously on KiKA. The 25-minute science journalism program is broadcast regularly and is primarily aimed at children aged eight and over, but also appeals to many adults because of the humorous tone of the presenters. Over the course of the shows history, Shary Reeves, Clarissa Corrêa da Silva, Ralph Caspers and Tarkan Bagci have been presenters. The programme's motto is: "Being a smartass with Tarkan and Clari" ("Klugscheißen mit Tarkan und Clari"), formerly: "Being a smartass with Shary and Ralph" ("Klugscheißen mit Shary und Ralph"). On average, over 400,000 viewers watch the show every week, with individual programmes on KiKA reaching up to 900,000 viewers. Ulrike Müller-Haupt was initially responsible for editing the programme. Beginning 2012, editing responsibilities were taken over by Hilla Stadtbäumer and starting in 2021, she has worked together with Christoph Reyer. After a total of 16 years, presenter Shary Reeves announced her departure from the programme in June 2017. In 2018, Clarissa Corrêa da Silva took over as presenter alongside Ralph Caspers. In September 2022, Tarkan Bagci took over as presenter from Ralph Caspers.