Analysis

Has the initial success of the minimum wage meant politicians have extended the policy to damaging levels? All the major political parties agree: the measure has been a success, and in the 2017 election all promised substantial rises in the rate by 2020. The Conservatives are aiming for a £9 national living wage by the end of the decade, and not to be outdone, Labour promised £10 for all but the under-18s. Paul Johnson, director of the Institute of Fiscal Studies, asks why left and right have both adopted this once controversial policy. And could the current bidding war of big increases undermine the positive effects it has had over its eighteen-year history? Producer: Kate Lamble.

An extended interview with the political theorist who argues that liberal democracy is in grave danger. Ngaire Woods, dean of the Blavatnik School at Oxford, speaks to Harvard scholar Yascha Mounk. He says that across a wide sample of countries in North America and Western Europe, citizens of mature democracies have become markedly less satisfied with their form of government and surprisingly open to nondemocratic alternatives. "A serious democratic disconnect has emerged. If it widens even further, it may begin to challenge the stability of seemingly consolidated democracies." Producer: Jim Frank (Image: Yascha Mounk. Credit: Steffen Jaenicke).

Michael Blastland asks if it's desk-bound work, rather than over-eating, which is making more and more of us obese. He hears about remarkable research which, despite received wisdom, suggests that people in the UK have reduced their calorie intake. However, they are expending far less physical energy, particularly because of new patterns of work which now require little if any bodily exertion. Michael examines projects to change individual behaviour such as corporate wellness programmes and altering office layouts - but finds it's going to be a tough sell.Interviewees: Dr Melanie Lührmann, Senior Lecturer, Royal Holloway Professor Alexi Marmot, architect, UCL Professor Andre Spicer, Cass Business School Professor Mike Kelly, School of Clinical Medicine, Cambridge UniversityProducers: Estelle Doyle, Phoebe Keane and Smita Patel.

Constitutions put controls on the people who run countries - but how are they created and how well do they work?In ordinary times constitutional debate often seems an abstract business without very much relevance to the way we live our lives. But political turmoil can operate like an X-ray, lighting up the bones around which the body politic is formed. Drawing on recent political events, Edward Stourton explores the effectiveness of the constitutions of the United Kingdom, the USA and France and asks are they doing what they were meant to do?CONTRIBUTORSLord Peter Hennessy, Professor of Contemporary British History, Queen Mary University of LondonAlison Young, Professor of Public Law, University of OxfordProfessor Tom Ginsburg, University of Chicago Law SchoolSophie Boyron, Senior Lecturer, University of Birmingham Law SchoolDavid S Bell, Professor of French Government and Politics, University of LeedsPresenter: Edward Stourton Producer: Richard Fenton-Smith.

Union membership is in decline whilst structural changes in the economy - including the rise of the so-called gig economy - are putting downward pressure on wages, and creating fertile conditions for exploitation by unscrupulous employers. So who is going to ensure that workers get a fair deal? Sonia Sodha, chief leader writer for the Observer, investigates. Producer: David Edmonds.

A year on from the Brexit referendum, Anand Menon contrasts Wakefield, which voted leave, with Oxford which voted remain, to find out how they feel now.

During Brazil's boom years the country's rising economy created a new middle class of gigantic proportions - tens of millions escaping from poverty. Brazil felt confident and even rich enough to bid for the 2016 Olympic Games. But then the economy turned. In the last two years the country has endured its worst recession on record. Rio de Janeiro - the city that hosted the Olympics - is bankrupt. Many communities don't have functioning schools or clinics. Corruption is endemic.David Baker, a regular visitor to Brazil, travels to Rio De Janeiro and São Paulo to find out where it went all wrong for the country, what's holding it back from being a great economic power and what the wider lessons are for developing countries across the world. Producer: Alex Lewis.

With angst over European security growing, why is Germany such a reluctant military power? Chris Bowlby discovers how German pacifism has grown since World War Two. The German army, the Bundeswehr, is meant to be a model citizen's army but is poorly funded and treated with suspicion by the population. Some now say the world of Trump, Putin and Brexit demands major change in German thinking, much more spending and Bundeswehr deployments abroad. But most Germans disagree. Could Germany in fact be trying historically something really new - becoming a major power without fighting wars? Producer: Chris Bowlby Editor: Hugh Levinson.

Do we unconsciously harbour racist and sexist attitudes? Far fewer people are explicitly racist than a couple of decades ago. They won't express or admit to racist sentiments. But what happens beneath the conscious level? In recent years there has been an explosion in research into what's called implicit bias. David Edmonds discovers that big business is taking the idea very seriously. He asks: does it stand up to scrutiny? Producer: Ben Carter.

Why is the UK such a generous global aid donor and should it be? The coalition government legislated to ensure Britain spent 0.7% of its national income on international development and it is now one of the very few countries to meet this United Nations target for such spending. With financial pressures on public services at home remaining acute, Jo Coburn asks why most politicians still support the idea, despite public criticism and press campaigns about wasted money. In her quest, she investigates the history of the UK's support for overseas aid and examines what makes so many politicians willing to risk voters' displeasure on the issue. Producer: Simon Coates.