The Forum

Agnes Arnold-Forster, a medical historian and author of 'Nostalgia: A History of a Dangerous Emotion,' joins nostalgia researcher Krystine Batcho, who created the Nostalgia Inventory, and Tobias Becker from the Free University of Berlin, author of 'Yesterday.' They explore nostalgia’s evolution from a malady to a source of comfort, the role of scents in memory, and its implications in politics. The conversation also touches on how the digital age enhances our longing for the past, revealing nostalgia's complex emotional landscape.

Airports: at their most basic level places to fly from to reach destinations near and far. And yet so much more. Iszi Lawrence and guests take a look at the evolution of airports, from their beginnings as military airstrips to the modern-day behemoths with their luxury shopping outlets, gardens and art galleries.The early European airports were modelled on railway stations, as that was the only blueprint for a transport hub. The public became so enthralled by air travel that airports eventually became popular as destinations in themselves. Airports today are places filled with emotion: the scene of farewells and arrivals, as well as the stress of international travel in an age of terrorism.Iszi is joined by cultural historian Alastair Gordon, author of Naked Airport: A Cultural History of the World’s Most Revolutionary Structure; Lilia Mironov, an architectural historian and air steward who wrote Airport Aura: A Spatial History of Airport Infrastructure; and architect and airport planner Su Jayaraman who teaches at the University of Westminster in London. Plus a range of Forum listeners from around the world contribute their personal experiences of airports.Produced by Fiona Clampin for BBC World Service.(Photo: John F. Kennedy International Airport, the TWA Flight Center, terminal 5, designed by Eero Saarinen. Credit: Lehnartz/ullstein bild/Getty Images)

What is the purpose of libraries in the era of the internet and AI? Whether at a school or in a community, libraries used to be key providers of information and enjoyment for many. But now, in a digital age, more books and periodicals are available online than even the biggest library can hold. If terabytes of text can now be stored on a single laptop, do we need to think differently about the way we access and navigate books? Could well-designed AI tools be trusted to make sense of this information abundance in a similar way that a good librarian can?Rajan Datar discusses the past, present and future of libraries with Randa Chidiac, Director of Library Services at the American University in Dubai; Dr. Andrew Hui, Head of Literature Studies at Yale-NUS College in Singapore; and Brewster Kahle, computer engineer and digital librarian, founder of the Internet Archive and Wayback Machine. We also hear from World Service listeners.(Photo: An artist's impression of a digital book. Credit: Alengo/Getty Images)

From Colombia to Vietnam and beyond, the US dollar is the currency in which much of international business is conducted, and which many people outside the US use as a means of exchange and a store of value. So how did a country with just over 4 percent of the world’s population come to dominate global banking and trade? When the position of the US dollar as the linchpin of global commerce was confirmed at the end of the Second World War, not everyone was happy with this state of affairs: the French soon spoke of the Americans having an ‘exorbitant privilege’. Did they have a point? And what of the more recent efforts to replace the Greenback with other currencies? Iszi Lawrence follows the history of the US dollar from its origins to today with H W Brands Jr., Professor of history at the University of Texas at Austin; Barry Eichengreen, Professor of economics and political science at the University of California, Berkeley; Carola Frydman, Professor of finance at the Kellogg School of Management, Northwestern University in Evanston; Perry Mehrling, Professor of international political economy at the Pardee School of Global Studies, Boston University and World Service listeners.[Photo: A roll of US dollar notes. Credit: Getty Images]

Where do charismatic personalities come from? Are they people born with special or even divine gifts? Or have they simply mastered a few effective techniques for cordial social interaction that anyone can learn? As business, entertainment and politics increasingly turn into popularity contests conducted through social media and TV, charisma seems to matter more and more: hence the proliferation of companies offering to teach aspiring leaders how to acquire it. But the influence that magnetic personalities can have on an audience long predates modern screen media: in 1896, a speech brimming with charisma earned one little-known young orator a not just a 20-minute standing ovation but also a US presidential nomination.Iszi Lawrence explores the role of charisma in politics and business with Julia Sonnevend, Associate Professor of Sociology and Communications at The New School for Social Research in New York and author of Charm: How Magnetic Personalities Shape Global Politics; John Antonakis, Professor of Organizational Behaviour in the Faculty of Business and Economics of the University of Lausanne, and co-author of a political charismometer that predicts US presidential elections among other things; Jeremy C. Young, historian of political culture and social movements, author of The Age of Charisma: Leaders, Followers, and Emotions in American Society; as well as World Service listeners.(Photo: Smiling businessman in discussion. Credit: Thomas Barwick/Getty Images)

When the writer Sir Arthur Conan Doyle killed off his most famous literary creation, Sherlock Holmes, readers were so angry that thousands cancelled their subscriptions to the magazine in which the stories appeared. The editor and Conan Doyle himself were overwhelmed with letters from a furious public - fans who instead of accepting the death of their favourite fictional character then started to write and share their own stories featuring Holmes. They eventually formed clubs and appreciation societies, brought together by a common interest.This practice is something we recognise today across the globe. In areas as diverse as sport, music, film and TV (to mention just a few), fans are not just passive consumers as the recent activities of Swifties (Taylor Swift fans) demonstrate. They’re actively engaged, creating content of their own and connecting with others to nurture a shared identity. The internet has made that easier than ever before, with fans now using their platform to influence political discourse too.Iszi Lawrence discusses the history and inexorable rise of fandom, with guests Paul Booth, Professor of  Media and Pop Culture at DePaul University in Chicago in the United States; Areum Jeong, Assistant Professor of Korean Studies at Arizona State University in the US and Corin Throsby from the University of Cambridge in the UK, whose research focuses on Romantic literature and early celebrity culture. The programme also includes contributions from Julian Wamble, Assistant Professor of Political Science at George Washington University and the creator of Critical Magic Theory: An Analytical Harry Potter Podcast, and listeners around the world share their fan stories.Produced by Fiona Clampin for the BBC World Service.(Photo: Fans wait to pay for items of merchandise as they visit a pop-up store of South Korean K-pop sensation BTS. Credit: ANTHONY WALLACE/AFP via Getty Images)

Jewellery can enthral us in many ways: it can delight, inspire and uplift us or it can transport us to the place where we acquired it. It can also make us avaricious or jealous. But why? What explains our enduring fascination with shiny metal and colourful stones?Iszi Lawrence is joined by Dr. Emily Stoehrer, Senior Curator of Jewelry at the Boston Museum of Fine Arts and author of several books on American jewellery and fashion; Dr. Petra Ahde-Deal, a Finnish gemmologist and jeweller who currently lectures at the University of Gothenburg in Sweden and at the DIS Study Abroad Program in Copenhagen; Emefa Cole, jewellery maker originally from Ghana who is also the Curator of Diaspora Jewellery at the Victoria and Albert Museum in London; Mansi Rao, Curator of the South Asia Collection in Norwich and World Service listeners.Some of the questions discussed include: gold has been the top choice both for jewellery makers and for buyers in many cultures all over the world. But there are similar metals which are more scarce - and more expensive - than gold, so it’s not exclusivity that makes it popular. And why do men wear flamboyant jewellery at some Indian weddings? (Photo: Gold Indian wedding bracelet. Credit: Neha S/Getty Images)

Dr. Manvir Bhatia, vice-president of the Indian Society for Sleep Research, shares valuable insights into insomnia's diagnosis and treatment. Science journalist Kenneth Miller discusses the intriguing history of sleep research, from its oversight to its recognition. A L Kennedy, a Scottish writer and self-described insomniac, offers a unique perspective on how sleeplessness influences creativity. They explore the complexities of sleep patterns, societal pressures on sleep schedules, and even the impacts of artificial lighting on our rest.

The first public run of the Japanese ‘bullet train’, the Shinkansen, on the 1st of October 1964, captured public imagination worldwide. And it wasn’t just the train’s sleek look or its high speed that made the headlines. Behind the train’s futuristic exterior lay a whole host of engineering innovations: new pantographs, automatic signalling, revolutionary drive units. Since then, very fast train travel has become available in over a dozen other countries. Places such as China and Spain have overtaken Japan when it comes to top train speed or the extent of the high-speed network. But the recent rise in remote working has reduced the demand for business rail travel and commuting. So what does the future hold for high-speed rail?Iszi Lawrence talks about the origins of high-speed rail and its current state to historian of modern Japan, Prof. Jessamyn Abel from Penn State university, civil engineering professor Amparo Moyano from the University of Castilla-La Mancha, Consultant Editor of the Railway Gazette Murray Hughes, poet Jan Ducheyne and World Service listeners.(Photo: A Shinkansen train arrives at a Tokyo station. Credit: Carl Court/Getty Images)

During the Covid-19 pandemic, many people found that keeping a diary was one way of reducing stress during uncertain times. They also felt that it was important to chart their day to day experience of a historic moment in world history. Such diaries will be valuable sources in years to come for historians, providing future scholars with a glimpse into the lives of ordinary people. These diaries form part of a long tradition of people chronicling their own stories, whether intended for publication or purely to put thoughts down on paper. One of the earliest texts we could describe as a diary was written by the Roman emperor Marcus Aurelius, whose musings were influenced by Stoic philosophy. Later diaries, such as those by or the African American naval yard worker Michael Shiner or the teenage Anne Frank, have been important in helping us understand society and events from ‘the bottom up’ during a given period. Iszi Lawrence explores what motivates people to keep diaries. She’s joined by a panel of experts including Dr Polly North, Founding Director of the Great Diary Project at Bishopsgate Institute in the UK; Julie Rak, the Henry Marshall Tory Chair in the Department of English and Film Studies at the University of Alberta who's an expert on what’s known as life writing; and Sergio da Silva Barcellos who’s published widely on diary keeping in Brazil, including a chapter in The Diary: The Epic of Everyday Life.Produced by Fiona Clampin for BBC World Service.(Photo: A diary. With kind permission of Forum listener Dorothy.)