Billions of people worldwide suffer from some kind of allergy and this is the focus of Theresa MacPhail’s book, Allergic. As a medical anthropologist and allergy sufferer herself she looks back at the history of diagnosis and treatment and investigates the worrying increase in numbers. It's thought by 2030 half the population will be sufferers. James Kinross is a colorectal surgeon and suggests that some of the answer as to why there’s been a rise in allergies lies in the imbalance of our microbiome - our inner ecosystem of viruses, bacteria and other microbes. In his book, Dark Matter, he argues that the microbiome is under threat from our modern lifestyles, the food we consume, and the air we breathe. Fermented foods are now thought to be integral to a healthy gut because they provide a vast amount of natural probiotics which can boost immunity and soothe the digestive tract. Johnny Drain is a materials scientist and a chef who believes in the benefits of fermentation, and has looked worldwide for innovations in techniques and flavours. Producer: Natalia Fernandez

In front of an audience at the Hay Festival Tom Sutcliffe asks what Dickens would say about the world today. The prize-winning Barbara Kingsolver discusses her retelling of David Copperfield, in which her eponymous hero, Demon Copperfield, must struggle to survive amid rural poverty and America’s opioid crisis. Michael Rosen has imagined his own modern Oliver Twist (An Unexpected Twist) and A Christmas Carol (Bah! Humbug!) and reflects on the unspoken grief and trauma of recent years, retold in his memoir, Getting Better. And while Natalie Haynes’s favourite Dickens adaptation is The Muppet Christmas Carol, she explores how the telling and retelling of stories and ancient myths shines a light on our contemporary world. Her latest work, Stone Blind, looks again at the tragedy of Medusa. Producer: Katy Hickman

The exhibition Animals: Art, Science and Sound at the British Library (until 28 August 2023) reveals how animals have been documented across the world through history. Cheryl Tipp, Curator of Wildlife and Environmental Sound, explores how people have tried to capture bird song – from using musical notation in the 17th century to the first commercial recording three centuries later, and the recording of the last Kauaʻi ʻōʻō songbird in Haiwaii. Swifts are summer migrants, flying thousands of miles, only pausing to breed in Europe. Their screeching cries and darting flight might be the sight and sound of summer evenings, and yet we know relatively little about their lives. In One Midsummer’s Day the naturalist Mark Cocker goes in search of the elusive swift, and finds a whole natural world of connections. The ecologist Tim Blackburn also discovers the hidden rules and interconnectedness of nature in his study of moths. His book, The Jewel Box, celebrates the diversity he finds within the moth trap on the roof of his flat. But also exposes a glimpse of a larger landscape, beyond the world of lepidoptera. Producer: Katy Hickman

The economic historian and former trader Anne Murphy looks back at the Bank of England in the 18th century. In Virtuous Bankers she shows how a private institution became ‘a great engine of state’ and central to Britain’s economic and geopolitical power. Anne Murphy tells Adam Rutherford that both its inner workings and outer structure had to command the respect of the general public. Interest was a fact of life long before the involvement of central banks and goes back as far as ancient Mesopotamia. In Price of Time the financial historian and Reuters’ commentator Edward Chancellor explores its long history and warns of the financial instability caused by years of low interest rates. Far from benefitting the majority of individuals, the ultra-low rates following the banking crash in 2008 have proved a boon for bankers, financiers and corporate stakeholders. After the crash, the businessman David Fishwick was concerned that few people or small businesses in his home town of Burnley could get access to credit. His challenge to the traditional high street banks was to set up his own banking enterprise which became Burnley Savings and Loans – a story told in a Channel 4 series and the film Bank of Dave (on Netflix). He argues for a return to banking as a means to serve and grow the local economy. Producer: Katy Hickman

What to do with the art of monstrous men? That’s the question Claire Dederer grapples with in Monsters: A Fan’s Dilemma. She wonders whether she can or should continue to love the work of Roman Polanski and Michael Jackson, Hemingway and Picasso? And if it’s possible to divorce the art from the artist. How do we now view the glorious, technicolour paintings of Paul Gauguin’s works from Tahiti? The writer Devika Ponnambalam has imagined the life of one of his muses Teha’amana in her latest novel, I Am Not Your Eve. Gauguin was 43 when he first arrived on the island in 1891 and made numerous teenage girls his ‘unofficial wives’. The science writer Michael Bond is interested in the psychology behind fandom. In his book Fans he looks at the pleasure of tribalism and sense of belonging, but also what happens when one’s hero falls short, and the cognitive dissonance needed to continue to stay true to a monstrous genius. Producer: Katy Hickman