Across Africa: Ivorian vinyl head's heritage hunt

This week in Across Africa: Ivorian music lover Cédric Kouamé is on a mission to restore 20th-century African vinyl and bring old-school sounds back to modern playlists. Also, 10 years after Cameroon's worst railway disaster, families are still fighting for justice for the 79 people killed. Finally, in São Tomé and Príncipe, we discover how the islands' rich volcanic soils produce some of the world's most distinctive vanilla.