A conversation with the author Jenny Landreth, on how Gertrude Ederle transformed swimming for women.

Stories of bold voices, with brave ideas and the courage to stand alone. Historian Alex von Tunzelmann shines a light on remarkable people from across history.

A BBC Studios Audio production.

Producer: Lorna Reader Series producer: Suniti Somaiya Presented: Alex von Tunzelmann Executive Producer: Paul Smith Commissioning editor for Radio 4: Rhian Roberts