Episode description
Eye-witness accounts from the Russian Revolution of October 1917; the first dog in space; Sabah, one of the biggest 20th-century stars of the Middle East; the last journalist to interview Osama Bin Laden; and horror and heartbreak: memories of the First World War.
Picture: Bolshevik leader Vladimir Lenin addressing crowds in the capital Petrograd during the Russian Revolution of 1917. (Credit: Hulton Archive/Getty Images)