A proud Hungarian by birth, Franz Liszt was a pioneer both in his piano playing and in his compositions. He was also the nearest thing to a rock star that classical music had in the 19th century. Fans would reportedly swarm over him, try and grab his gloves, even smoke his discarded cigars!

Rajan Datar is joined by three people for whom Liszt and his music occupy a central position in their professional lives:

Examples from Liszt’s works used in the programme:

(Image: Detail from a 19th-century caricature of Franz Liszt, Bibliothèque-Musée De L'Opéra National De Paris-Garnier. Credit: DeAgostini/Getty Images)

"That’s some Catch, that Catch 22". It’s a novel that gave rise to a new term in the English language and gave voice to American soldiers serving in Vietnam in the 1960s. Since its publication in 1961, Catch-22, Joseph Heller’s best-selling novel, has not only come to symbolise the cynical self-serving aspect of war run as a business, but also the way an ordinary person can be trapped and controlled by bureaucracy and social rules, in whatever area of life. It’s a novel that’s sold tens of millions of copies, and it continues to engage new readers. So, what is the secret of its success? Bridget Kendall is joined by the American novelist and friend of Joseph Heller, Christopher Buckley; Dr Beci Carver, lecturer in 20th century literature at Exeter University, whose forthcoming book is Modernism’s Whims; and Tracy Daugherty, author of Just One Catch: A Biography of Joseph Heller, and Emeritus Professor at Oregon State University in the US. With the contribution of Patricia Chapman Meder, the author of The True Story of Catch-22, whose father was the inspiration for Colonel Cathcart, Heller’s commander who kept increasing the number of flight missions.

(Photo: An early edition of Joseph Heller’s novel Catch 22. Credit: Nicholas Kamm/AFP via Getty Images)

If you were a woman in the mid-19th century, some universities might let you attend public lectures on science, but very few would enrol women as regular students. The number of women allowed to sit exams and get academic degrees was vanishingly small. In mathematics it was almost unheard of.

So how did Kovalevskaya do it? How much was talent? How much luck and opportunity? And how much just sheer force of character?

To guide us through Sofya Kovalevskaya’s eventful life - and her equations – Bridget Kendall is joined by three experts:

(Photo: Sofya Kovalevskaya Credit: Fine Art Images/Heritage Images/Getty Images)

The ancient Inca town Machu Picchu is now the most visited tourist attraction in Peru – and yet it lay nearly forgotten for over three centuries until American and Peruvian explorers drew the world's attention to it in the 1910s. And despite a century of excavations at the site, there are still many unanswered questions about Machu Picchu: why was it built in the first place, who were the immigrants that made up a large proportion of the town’s population, and why was it abandoned so quickly.

To find out more about Machu Picchu, Bridget Kendall is joined by leading archaeologists of the Inca civilisation Lucy Salazar and Michael Malpass, the celebrated mountaineer and explorer Johan Reinhard and by writer Mark Adams who retraced the steps of the 1911 expedition led by Hiram Bingham that put Machu Picchu back on the map.

(Photo: Machu Picchu, Peru. Credit: Eitan Abramovich/Getty Images)

How do you approach the decisions you make in life? Do you think about them in terms of the maximum pleasure and minimum pain that any choice would lead to for yourself and others around you? If so, you are beginning to think along similar lines to the influential British philosopher and reformer Jeremy Bentham with his concept of Utilitarianism. This was not Bentham’s only contribution to radical thought. With the prison and judicial systems, with education, women’s suffrage, animal rights and the monarchy, throughout his life he came up with a huge body of work that challenged the status quo and still feels relevant today.

(Image: Coloured engraving of Jeremy Bentham, early 19th century. Credit: Stock Montage/Getty Images)

Copper is a metal that has been with us since the dawn of civilisation. The Romans used it to build their empire, and its high thermal and electrical conductivity led to the 19th century discovery of how to generate electricity and a revolution in telecommunications. Copper was even used to build the Statue of Liberty in New York, and it’s because of copper’s tendency to oxidise that the statue is no longer shiny brown but green. Today we still depend on this 'eternal metal', so called because it doesn’t decay or rust, and it has become a staple and necessary component in new green technologies like solar power and electric cars. But extracting copper has always been very damaging to human health and the environment - so how has our relationship with copper changed over the centuries?

Joining Rajan Datar to find out more about copper past and present is Nikita Sud, Professor of Development studies at Oxford University and the author of The Making of Land and The Making of India; the archaeologist Dr William Parkinson, who is a curator at the Field Museum, and Professor of Anthropology at the University of Illinois at Chicago; and Andrea Sella, Professor of Chemistry at University College, London.

(Image: Stripped copper cables. Credit: Christoph Burgstedt/Science Photo Library via Getty Images)

Agatha Christie put her decision to become a writer down to a lack of education and a capacity for day-dreaming. Her murder mysteries, full of ingenious plot twists, are still regarded by many as the finest examples of crime fiction and have sold in their billions in the English language and in translation.

Although the world she depicts is considered by some to be cosy and genteel, and her plots formulaic, a new generation of screenwriters is bringing out the darker side of Christie’s imagination. So what accounts for her continuing global success, when today’s crime fiction tends to be grittier and more realist?

Bridget Kendall is joined by Dr Michelle Kazmer, Professor in the School of Information at Florida State University, who’s combined a lifelong passion for crime fiction with study into how we use information – such as clues or evidence; Dr Mark Aldridge, Associate Professor of Film and Television at Solent University and the author of Agatha Christie on Screen and Poirot: The Greatest Detective in the World; and James Prichard, Agatha Christie’s great-grandson. Award-winning crime writer Ragnar Jónasson also explains how Agatha Christie's novels influenced his own work.

Produced by Fiona Clampin for BBC World Service.

Boudica, also known as Boadicea, was a member of Iron Age aristocracy in Roman occupied England and her husband was the ruler of the Iceni people. When he died in around 60AD, Boudica, driven by Roman brutality, led a rebellion against the Roman army and marched on London. It was a ferocious attack that nearly drove the Romans out of Britain before Boudica was finally defeated. Today, she is an iconic and sometimes controversial figure. To explore Boudica, Bridget Kendall is joined by professors Richard Hingley and Miranda Aldhouse-Green and Dr. Jane Webster.

(Image: Detail from Boadicea Haranguing the Britons by William Sharp, after John Opie, line engraving, published 1793. Credit: by Hulton Archive/Getty Images)

Harry Houdini’s story is the classic American tale of an immigrant who from impoverished beginnings made it big in the United States. Perhaps it is this early hand to mouth existence in a large family which explains his extraordinary drive to succeed. Captivated by magic shows, he began performing tricks on stage with one of his brothers, and then with his wife.

Houdini’s decision to make escape the focus of his act was well-timed, chiming with the public mood for sensational trickery. Whether it was escaping from handcuffs, a straitjacket or from a box filled with water, Houdini wowed audiences with his seemingly death-defying performance. So what motivated this complex man who spent a lifetime ‘deluding’ the public with his illusions, and how did he reconcile that with his campaign against the Spiritualist movement which he regarded as a racket?

Rajan Datar charts the life and career of the legendary Houdini, with writer and biographer Adam Begley, whose book Houdini: The Elusive American was published in 2020; Dr Matthew Solomon, Associate Professor at the University of Michigan and the author of Disappearing Tricks: Silent Film, Houdini, and the New Magic of the Twentieth Century; and Dr Katharina Rein from the University of Potsdam in Germany, who’s published widely on stage magic in the 19th and early 20th centuries, including Techniques of Illusion which will be available in 2022.

Produced by Fiona Clampin for the BBC World Service.

(Photo: Harry Houdini chained up ready to jump into Charles River, Boston, Massachusetts in 1906. Credit: Bettmann via Getty Images)

It’s widely regarded as the most successful treaty in the world, and it was the first arms control agreement established during the Cold War. The Antarctic Treaty, which came into force in 1961, protects what is one of the most unspoilt places on earth, from mining, from military activity and allows only scientific exploration and peaceful pursuits. It was thanks to the treaty and research carried out in Antarctica that scientists identified a hole in the ozone layer in the 1980s, but it’s been most powerful as a symbol of what can be achieved to create peace between nations and give wilderness protection. So what has made this treaty so effective, and can it still hold up today in a world which is hungry for minerals and where an increasing number of states are seeking to project their technological and scientific prowess in Antarctica?

Joining Bridget Kendall is Birgit Njaastad, the Chair of the Committee for the Environmental Protection of the Antarctic, and for more than 25 years a Norwegian Polar Institute environmental expert; Professor Alan Hemmings, a specialist on the geopolitics of the Antarctic from the University of Canterbury New Zealand; and Dr Jessica O’Reilly, Associate Professor of International Studies at Indiana University in Bloomington in the United States, and the author of The Technocratic Antarctic. With poetry and song about the Antarctic by the New Zealand poet Bill Manhire.

(Photo: Chinstrap Penguins on Half Moon Island, South Shetlands, Antarctica. Credit: V Stokes/ iStock/ Getty Images Plus)