Arts, History Documentary hosted by Ana Marie Valentir, published by WDR in 2017 - English narrati

　　Chris Jackson, Xand Van Tulleken and Aldo Kane take part in an extraordinary expedition to one of

　　Dr Helen Czerski examines the world of sound waves.

　　Comedians Ed Byrne and Dara O Briain embark on an expedition of a lifetime, crossing 3,500 miles f