Melvyn Bragg and his guests discuss the Trinity, a central doctrine of Christianity.
3/3 The lasting legacy of the March and how its roots still reach to the highest levels.
A former left-wing Sandinista soldier talks about the war against US-backed Contras.
1/3 In 1914, intellectuals and authors were soon seen as crucial to the war effort.
Melvyn Bragg and his guests discuss the Roman gladiator and rebel leader Spartacus.
2/3 Ed Stourton finds out if the Battle of Luding Bridge lives up to its mythical status.
In 1983, the Philippines opposition leader was shot dead on his return from exile.
Melvyn Bragg and guests discuss the history of ideas about the eye and how it works.
1/3 Edward Stourton retraces the route of Mao's Long March, to mark its 80th anniversary.
In February 1974, Russia's most famous dissident writer was sent into exile in the West.
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