Stand-up comedian Henning Wehn takes over a German class and highlights the importance of the four additional German letters in the alphabet, the ß, ä, ü and ö. Where would Düsseldorf be ...

D as in "Dora" — or "David"? The Nazis had eliminated Jewish names from the German spelling alphabet. The names are to return, at least symbolically. It is a common situation during a phone call ...