Start the Week

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.

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.

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.

On Start the Week Anne McElvoy talks to the Russian expert Fiona Hill about the many faces of Vladimir Putin, while Vladislav Zubok considers the impact of the past on the Russia of today. Oliver Bullough turns to drink to understand the soul of the nation and the historian Rachel Polonsky considers the cultural landscape of the post-Soviet era.Producer: Katy Hickman.

On Start the Week Allan Little grapples with super-symmetric particles, superstrings and multiverses with the help of Jon Butterworth. But the writer Jim Baggott dismisses many of the ideas of modern theoretical physics as mere fairy tales and fantasy. The sociologist Hilary Rose bemoans the commercialisation of biological sciences and warns against believing the hype. But the world-renowned stem cell scientist Stephen Minger believes recent developments show great promise for the treatments of many life-threatening diseases. Producer: Natalia Fernandez.

On Start the Week Emily Maitlis talks to the Executive Chairman of Google, Eric Schmidt about the digital future. A future where everyone is connected, but ideas of privacy, security and community are transformed. Former Wikileaks employee James Ball asks how free we are online. The curator Honor Harger looks to art to understand this new world of technology. And worried about this brave new world? David Spiegelhalter, offers a guide to personal risk and the numbers behind it.Producer: Katy Hickman.

On Start the Week Anne McElvoy explores movements and people that have changed the political landscape. The MP Jesse Norman champions the founder of modern conservatism, the 18th century philosopher and statesman Edmund Burke. Lady Antonia Fraser brings to life the Great Reform Bill of 1832 which transformed the way Britain was governed. And one of the co-founders of the Occupy movement, David Graeber, looks afresh at the idea of democracy. Producer: Katy Hickman.

On Start the Week Carrie Cracknell talks to Jonathan Freedland about her new production of Berg's opera, Wozzeck, and the descent of the central character into madness and despair. The pianist Jonathan Biss looks at whether Schumann's later music reflects the troubled state of his mind. The psychiatrist's diagnostic bible is to be updated later this month, and Tom Burns and Richard Bentall discuss the controversies that continue to dog the world of psychiatry. Producer: Katy Hickman.

Start the Week is at the Brighton Festival. Stephanie Flanders talks to Michael Rosen about why the 1929 children's novel, Emil and the Detectives, is at the heart of the festival, with its city tale of hope, invention and dissent. But the writer and traveller Jay Griffiths criticises a Western risk-averse society for denying children the opportunity to roam free. Stanmer Woods is the setting of Matt Adams's latest theatrical experience which traces the legacy of the conflict in Northern Ireland, and the artist Mariele Neudecker brings the outside world inside in her transformation of a Regency Town House.Producer; Katy Hickman.

On Start the Week Lisa Jardine talks to the artist Gavin Turk about the construction of artistic myth and the question of authorship and authenticity. The rare book dealer Rick Gekoski searches for lost treasures amid tales of theft, forgery and destruction, while the curator Paul Roberts reveals the life and culture preserved in the volcanic devastation of Pompeii and Herculaneum. The everyday object - a table - is at the centre of Tanya Ronder's new play of belonging, identity and inheritance.Producer: Katy Hickman.