Analysis

Does a falling currency help or harm the economy? It's an urgent question for the UK, as the pound fell sharply in value against other major currencies after the referendum on Britain’s membership of the European Union in June 2016. Market commentators put this down to foreign investors becoming intensely gloomy about the prospects for the UK economy after Brexit. Others have welcomed the drop, saying it will benefit British exporters. But is it really such a simple, binary question? Paul Johnson, director of the Institute for Fiscal Studies investigates. Contributors: Richard Barkey, CEO, Imparta Roger Bootle, chairman, Capital Economics Meredith Crowley, reader in international economics at Cambridge university Jane Foley, head of foreign exchange strategy, Rabobank Rain Newton-Smith, chief economist, Conferdation of British Industry Mick Ventola, managing director, Ventola Projects Producer: Neil Koenig

Are we living in a ‘golden age’ of political conspiracy theories and what does belief in them tell us about voters and politicians? James Tilley, a professor of politics at the University of Oxford, talks to historians, psychologists and political scientists to ask why conspiracy theories are so common and who are the people spreading them. Why are so many of us drawn to the notion of shadowy forces controlling political events? And are conspiracy theories, in which things always happen for a reason and where good is always pitted against evil, simply an exaggerated version of our everyday political thinking? Producer: Bob Howard

Does being born to non-married parents affect a child's prospects? It is a question that is notoriously hard to answer. BBC Education Editor Branwen Jeffreys investigates research from Princeton's landmark Fragile Families study, which has gathered data from 5,000 births over the last 18 years. She speaks to principal investigator Professor Sara McLanahan to find out how much we know about the differing outcomes of children raised by married, cohabiting or single parents. Branwen asks how applicable the results of the study are to British society, where very soon, a minority of births will be to married parents. Professor Emla Fitzsimons has been following the lives of 19,000 children, born across the UK in 2000-01. She reveals what the project, know as The Millennium Cohort Study has found. Producer: Diane Richardson

We live in a world where everyone is trying to manipulate everyone else, where social media has opened up the floodgates for a mayhem of influence. And the one thing all the new propagandists have in common is the idea that to really get to someone you have to not just spin or nudge or persuade them, but transform the way they think about the world, the language and concepts they have to make sense of things. Peter Pomerantsev, author of an acclaimed book on the media in Putin's Russia, examines where this strategy began, how it is being exploited, the people caught in the middle, and the researchers trying to combat it. Because it is no longer just at the ‘fringes’ where this is happening – it is now a part of mainstream political life. Producer: Ant Adeane

From a US president who is turning the world upside down – with a relish for dismantling global agreements – the message is clear: it’s America first. But where does that leave old European allies? Few expect the transatlantic relationship to go back to where it was before Trump. Europe, says Angela Merkel, now has to shape its own destiny. James Naughtie explores the uncertain future for America's friends. Producer: Kate Collins