1/5 Richard Burton and John Speke leave for Africa in search of the source of the Nile.
Soldiers' experiences at night on the battlefields of the First World War.
Jonathan Freedland takes the Long View of celebrity football managers.
Bridget Kendall hears from witnesses to Khrushchev's thaw following the death of Stalin.
Bridget Kendall presents stories from the Cold War, from Korea to East Germany.
Bridget Kendall hears from three people who witnessed the fall of Mossadegh in 1953.
2/2 Ayisha Yahya travels on Kenya's 100-year-old railway.
BBC Radio 4 Extra
Bridget Kendall tells the forgotten story of the Cold War's first anti-communist revolt.
1/2 Ayisha Yahya recounts the history of Kenya's Lunatic Line.
Bridget Kendall tells the story of the development of the hydrogen bomb.