Edward Stourton examines the long-term prospects for the British monarchy as an avowed republican becomes leader of the opposition. At least eighty per cent of the population affirm their belief in the institution, opinion polls suggest - a figure that has remained remarkably constant since the Queen, now the longest serving monarch, ascended to the throne. But how can we be sure that this support and the institutions that underpin the monarchy will remain by the time her great-grandson becomes King?

Within two or three generations the constitutional make-up of Britain could look very different. Could the monarchy withstand a series of upheavals such as the disestablishment of the Church of England, Scottish independence, a weakening of Britain's links with the Commonwealth and reform of the House of Lords (along with the remnants of the hereditary principle)? What if the institutional foundations on which the monarchy rests change irrevocably or disappear altogether? By the time Prince George is likely to become King, in the latter half of this century, social attitudes may have changed considerably. Is it safe to assume that the monarchy will survive? And what will attitudes towards this institution say about wider changes across British society?

Producer: Peter Snowdon.

In June the Scottish Government introduced radical proposals for land reform. Local communities would gain a new right to ask the government to force a landowner to sell their land if they are deemed a barrier to sustainable development. The plan caused uproar amongst landowners. David Cameron's father-in-law, Lord Astor, claimed the SNP was staging a Mugabe-style land grab. Yet campaigners in the growing cross-party movement for reform see this as just the start of a generational mission to break up the most unequal pattern of land ownership in the developed world. Is this an attack on the right of individuals to hold on to their property - or a much-needed step towards sustainable development?

Euan McIlwraith asks why so few people own so much of Scotland, whether it matters, and how you can legitimately diversify ownership in a 21st century liberal democracy.

Producer: Liza Grieg.

(Image: The Scottish Highlands. Credit: Shutterstock)

Lyse Doucet asks how far the Middle East today is defined by the legacy of the Iran-Iraq war? The conflict - the longest convention war of the 20th century- exposed deep fault lines in a region still shattered by violence. Thirty five years after it began, Iraq has imploded. Syria too. And Iran is extending its influence. Lyse retells the story of the war, then is joined by a panel of guests to ask if the events of three decades ago can help us understand what's going on in the Middle East today?

Producers: Mike Gallagher and Rozita Riazati.

The Fukushima disaster made many people oppose nuclear power. Michael Blastland asks what it would take to change their minds. In 2011, following a devastating tsunami, Japan's Fukushima nuclear power station went into meltdown, leaking radiation. It was the most serious nuclear accident since Chernobyl. It appeared to send the nuclear power industry into retreat - and not just in Japan. Other nations had second thoughts too. Germany decided to phase out its nuclear reactors altogether. But now Japan has resumed nuclear power generation. At the heart of the 'nuclear wobble' of 2011 is the question of risk. Attitudes to, and understanding of, risk vary surprisingly between nations and cultures. But after one of the most shocking incidents in nuclear power's history, will we be able to cope with our fears? In other words, can we learn to live with nuclear power?

Paul Johnson, director of the Institute for Fiscal Studies, asks why Britain spends such vast sums on Housing Benefit - now £25 billion. He examines the history of these payments and how government funding for house-building has gradually changed into subsidies for rents, especially to private landlords. 40% of tenants in private housing receive Housing Benefit. Critics argue that these have distorted the market and failed to address the fundamental shortage of housing supply. Paul asks how we got here and whether anything can change.

Producer: Adam Bowen.

Freedom of movement will be a key battleground in Britain's crucial EU debate. It gives EU citizens the right to live and work anywhere in the union and is praised by supporters as boosting prosperity. But critics say it has created unsustainable waves of mass migration and must be restricted. So where does this policy actually come from, and what does it mean in practice? Sonia Sodha discovers why it has become such a crucial issue, and what's at stake as Britain decides its European future.

Producer: Chris Bowlby

(Photo credit: Getty Images)

Who are "the people" - and who's keeping power from them? Eliane Glaser explores how across Europe and beyond, populist movements are claiming they can to put back politicians in touch with voters and reinvigorate democracy from the grassroots. From UKIP's millions of voters to the passionately engaged Scottish referendum, from the rise of nationalist parties in northern Europe to burgeoning left-wing movements like Syriza and Podemos further south, traditional politicians are feeling the public's wrath. But how much of the crowd-pleasing rhetoric can be taken at face value - and do politicians really now think of themselves as ordinary people?

Contributors:

Producer: Polly Hope.

(Photo credit: AFP/Getty Images. Picture shows a woman holding a placard at a demonstration on 5th July 2015)

Recent high profile cases of unarmed black men dying at the hands of the US police have sparked outrage, protests and civil unrest in several American cities. The deaths of Michael Brown, Eric Garner, Walter Scott and Freddie Gray are - some claim - evidence of long-standing problems with police racism and excessive violence. But what do we really know about what's happening? Helena Merriman explores the issues of racism, bias and police use of force. And the head of President Obama's taskforce on police reform, Charles Ramsey, tells us that fixing the problem will involve much more than just fixing the police.

(Photo copyright: Reuters)

The American philosopher Samuel Scheffler reveals a hidden force which motivates our actions: our belief in the continuation of humanity after our deaths. In an interview with Edward Stourton, plus a Q&A from an audience at the London School of Economics and Political Science, Scheffler proposes thought experiments which expose the importance of this conception of the afterlife. It is, he argues, this continued existence of the human race in general - and not just of our own descendants - which gives meaning and purpose to much of our lives. With references to Woody Allen, National Porn Shops and Martin Luther. Scheffler is professor of philosophy and law at New York University.

In its short lifetime, the world wide web has raised giants and monsters. It's transformed sections of the economy, from retail to publishing and the music industry. It has had a profound effect on journalism and the transmission of ideas. It has facilitated social networks which have penetrated deep into the private lives of millions of people around the world. It has even been held responsible for far-reaching political upheavals like the Arab Spring.

Some internet evangelists compare the web to the Wild West, a territory full of exciting opportunity that will lose its character and potential if it's brought under the rule of law. Others insist that the web is too disruptive to established institutions and practices and must be tamed. So, what do we want from the next 25 years of the internet? And how can we go about getting it?

Producer: Luke Mulhall.