Archive on 4, previously The Archive Hour, is a BBC Radio 4 series which compiles audio clips from the station’s archives around a different theme in each edition. A variety of guest speakers, with a connection to the week’s subject, present the show. An archive of past editions (from 2010) is available on BBC iPlayer. Topics are wide-ranging: recent episodes (July 2015) include ‘Spoken Like a Woman’ in which Anne Karpf explores the way in which women have shaped the sound of British radio; ‘Destroyer of Worlds’ which discusses how Britain discovered the first atomic bomb, only to lose it to the Americans, and ‘The Devil’s Horn’ in which jazz musician Soweto Kinch talks on the history of the saxophone.