Start the Week - Population: Ten Billion

On Start the Week Sue MacGregor asks what happens when the world's population reaches ten billion. The computer scientist, Stephen Emmott argues that time is running out for humanity unless we radically change our behaviour, but the geographer Danny Dorling believes that we should be preparing for the inevitable population decline. Jill Rutter explores the impact of differing scientific advice on politics, and the complexity of evidence-based policy. And with India's population set to exceed that of China, the Nobel prize-winning economist Amartya Sen lambasts political inaction in raising standards for the poorest in society. Producer: Katy Hickman.

Start the Week - Zadie Smith on social mobility

On Start the Week Stephanie Flanders discusses social mobility. Zadie Smith's novel NW is a portrait of modern urban life in which characters try, but mostly fail, to escape their past. The Conservative Minister David Willetts and the columnist Owen Jones discuss what meritocracy and opportunity mean in today's society. And the social historian David Kynaston looks to the end of the 1950s when meritocracy became the buzz word of the day. Producer: Katy Hickman.

Start the Week - Zadie Smith on social mobility

On Start the Week Stephanie Flanders discusses social mobility. Zadie Smith's novel NW is a portrait of modern urban life in which characters try, but mostly fail, to escape their past. The Conservative Minister David Willetts and the columnist Owen Jones discuss what meritocracy and opportunity mean in today's society. And the social historian David Kynaston looks to the end of the 1950s when meritocracy became the buzz word of the day. Producer: Katy Hickman.

More or Less: Behind the Stats - Will 40% of the world’s workforce really be in Africa by 2050?

Ruth Alexander examines US Secretary of State, John Kerry?s claim that 40% of the world?s workforce will be in Africa by 2050 and talks to the chief of the United Nations? population division about its projections for 2050 and 2100. The programme also examines the final scene in The Fast and the Furious 6, the global box office sensation. How long must that runway have been at the end of the film? This programme was first broadcast on the BBC World Service.

Start the Week - Hari Kunzru and Dystopia

On Start the Week Jonathan Freedland talks to Hari Kunzru about his dystopian vision, where books and the act of remembering have been banned. Jane Rogers explains how her apocalyptic tale may be set in the future but points to today's abuse of scientific knowledge and the heroism of youth. Past real events are at the heart of James Robertson's latest novel which explores grief, justice and the truth. And the photographer Adam Broomberg asks how far images of war capture the truth.

Producer: Katy Hickman.

Start the Week - Hari Kunzru and Dystopia

On Start the Week Jonathan Freedland talks to Hari Kunzru about his dystopian vision, where books and the act of remembering have been banned. Jane Rogers explains how her apocalyptic tale may be set in the future but points to today's abuse of scientific knowledge and the heroism of youth. Past real events are at the heart of James Robertson's latest novel which explores grief, justice and the truth. And the photographer Adam Broomberg asks how far images of war capture the truth.

Producer: Katy Hickman.

More or Less: Behind the Stats - Is a child dying of hunger every 15 seconds?

Ruth Alexander examines the claim that every 15 seconds a child dies of hunger. It?s a popular statistic used by celebrities and charity campaigners in support of the Enough Food for Everyone IF campaign. It conjures up the image of millions of young children starving to death. But is this really the case? This programme was first broadcast on the BBC World Service.