The Outsider, by Andrew Hussey

It is 60 years since the Algerian War of Independence. But it still casts a shadow over the present. As France goes to the polls to elect a new president, Edward Stourton presents stories from the country's colonial past which still affect day-to-day life. He tells the surprising story of how, in the 1870s, a tiny insect called phylloxera created the climate for the Algerian War. He hears about the intriguing story of a knife abandoned in a house in Algiers on a night in March 1957. And he talks to the "Milk Bar Bomber", immortalised in the film The Battle of Algiers.