Ian McEwan talks to Andrew Marr about his new novel, Machines Like Us, and reflects, at the age of 70, on a career which began more than four decades ago. Machines Like Us is set in an alternative Britain in the 1980s, Margaret Thatcher has lost the Falklands war and the scientist Alan Turing has made a breakthrough in artificial intelligence leading to a series of synthetic humans. The love-triangle at the heart of the book forces the reader to confront ideas about what makes us human and what happens when we lose control of our creations.Ian McEwan published his first book, a collection of short stories called First Love, Last Rites, in 1975. It won critical acclaim, as well as comment about the sometimes shocking subject matter. Since then, he has published 15 novels, and won the Man Booker Prize in 1998. He is a literary writer who has also enjoyed great popular success, with his novel Atonement selling well over a million copies in the UK alone. Producer: Katy Hickman

850,000 people in the UK are thought to be living with dementia. The writer Nicci Gerrard tells Andrew Marr about her father’s slow death from the illness. She explores issues around memory, language and identity, as well as asking how society will cope as the population ages and the number of people suffering with dementia rises into the millions.But why and how do we age? The science journalist Sue Armstrong has been investigating what happens to cells when the body gets older, and whether ageing really can be treated like any other disease waiting to be cured. Life expectancy has risen sharply in the last half century globally, but can it keep on rising?The street theatre performance, Bed, involving elderly actors lying in beds in town centres around the country, was devised by older members of Entelechy Arts who wanted to make a statement about isolation and invisibility. The Artistic Director David Slater says the arts have an important role to play in improving people’s lives no matter how old.The poet John Agard is 70 this year. In his latest collection, The Coming of the Little Green Man, he explores the world from the stance of the outsider. In a series of mischievous, satirical fables he gives voice to the political and spiritual, comic and poignant.

At the Free Thinking Festival at Sage, Gateshead Tom Sutcliffe presents a special edition exploring the art and science of communication. The American diplomat William J Burns played a central role in American foreign policy from the end of the Cold War to the collapse of relations with Putin’s Russian, and including secret talks with Iran. He explores the language of diplomacy.Harriet Shawcross is an award-winning filmmaker and journalist. She reflects on how as a teenager she stopped speaking for almost a year. In her book Unspeakable she considers the power of silence.The musician and composer Kathryn Tickell roots her work in in the landscape and people of Northumbria. She is the foremost exponent of the Northumbrian pipes, and tells the story of Northumbria with - and without - words.Thomas Dixon studies emotional outbursts as the director of the Centre for the History of Emotions. He unveils the scientific and philosophical underpinnings of anger and weeping. Producer: Katy Hickman

The prize-winning author Karl Ove Knausgaard explores the life and work of a fellow Norwegian artist, Expressionist Edvard Munch. He tells Tom Sutcliffe that Munch’s work extends far beyond his iconic painting The Scream. Knausgaard brings together art history, biography and personal memoir to reflect on what it means to be an artist.Munch is known as a painter of the inner life and even his landscapes are infused with personal reflection. But at the turn of the twentieth century, while he was looking inward, art schools across Europe were forging new philosophies and were engaging with the wider world. In Germany the Bauhaus movement, founded by Walter Gropius, stood for experiment and creative freedom. Fiona MacCarthy’s new biography of Gropius re-evaluates his intellectual and emotional life. She depicts him at the heights of Bauhaus fame and through his post-war years in London to his architectural successes in America.Back in the UK, Charles Rennie Mackintosh was at the centre of a movement based at the Glasgow School of Art. Curator Alison Brown explains how that city became the birthplace of the only Art Nouveau ‘movement’ in the UK. The style and influence of Mackintosh and his disciples has since spread throughout the world.Both Bauhaus and Art Nouveau designs became commercially successful and mass produced. But the earlier Arts and Craft Movement of William Morris championed the principle of handmade production. In an extraordinary find, the social historian Tamsin Wimhurst, came across a terraced house in Cambridge owned by a working-class Victorian decorative artist who reproduced the work of Morris for his own pleasure at home. The David Parr House is opened to the public later this year.Producer: Katy Hickman

The Chinese journalist and activist Xinran tells the story of China since the start of the 20th century through four generations of one family. She tells Andrew Marr how the family lived through enormous social upheaval, and reveals how traditional values started to unravel with the tide of modernity.The academic Roel Sterckx looks back beyond the last century to ancient Chinese philosophers and thinkers. He argues that in order to understand modern China we need to understand its past. The practice of power, government and social harmony has a long tradition.It is seventy years since Mao founded the People’s Republic of China and Julia Lovell re-evaluates Mao's philosophy both at home and abroad. For decades Maoism has been dismissed in the West as an outdated historical and political phenomenon, and yet his ideas remain central to China’s Communist government - and continue to influence people around the world.Not only Chinese ideas have spread throughout the globe: the latest play from director David K S Tse is based on the lives of Chinese people who moved to the UK. From Shore to Shore is staged in Chinese takeaways around the country and blends English, Mandarin and Cantonese, to tell the story of three journeys to find a home. Producer: Katy Hickman

David Nott's holiday plans are not like most. For 25 years the surgeon has used unpaid leave to volunteer as a war doctor. His work has taken him from Sarajevo under siege to rebel-held Aleppo, and to the aftermath of natural disasters in Haiti and Nepal. He tells Kirsty Wark how a combination of bravery, compassion and the thrill of danger inspired him to risk his life helping others.Azad Cudi had war forced upon him as a conscript in the Iranian army. A decade later he volunteered in the fight for an independent Kurdistan: as a sniper fighting against so-called Islamic State. His memoir, Long Shot, describes the fighters, activists and intellectuals he worked alongside. He asks what will happen to the Kurdish cause as Western powers look to pull out of Syria and Iraq.Men are not the only volunteers in the Middle East - and the causes that influence people are not always positive. Joana Cook from the International Centre for Radicalisation Studies has examined the large number of women and teenagers who have become "affiliates" of the so-called Islamic State. Some women were inspired by the healthcare, education and job opportunities offered to volunteers. Others became powerful agents of radicalisation. Cook urges politicians to consider these nuances when they decide what to do with volunteers who now wish to return home.The morality of public duty and public service is the topic of an upcoming lecture by Claire Foster-Gilbert, director of the Westminster Abbey Institute. She argues that public servants in politics and beyond make moral choices every day; but that if we fail to scrutinise these properly, we could fail prey to anger, vengeance and injustice.Producer: Hannah Sander

Andrew Marr discusses the complex interplay between language and culture. The prize-winning American author Jhumpa Lahiri has spent many years living in Italy immersing herself in the language. She has brought together 40 short story writers – many translated into English for the first time – in a collection that reflects the regional landscapes, private passions and political events of her adopted country over the past century.April De Angelis is a writer steeped in translation and adaptation: she brought Elena Ferrante’s novels of Neapolitan life to the stage. And she is now involved in the English National Opera’s production of The Merry Widow – a French comic play re-imagined by an Austro-Hungarian composer. The power of translation is explored in a new exhibition at the Bodleian Library curated by the academic Katrin Kohl. At the centre is the story of the Tower of Babel, an origin myth in the Bible which explains why people speak different languages. Kohl argues that studying how a story is translated from one language to another allows us to glimpse the rich diversity of life and culture around the world.Many people now rely on computers to translate from one language to another. The mathematician Marcus du Sautoy looks at how AI is being programmed to be creative in language and the arts, and what that means for the human touch. Producer: Katy Hickman

Amol Rajan explores how geology and demography have shaped the modern world. Paul Morland argues that we have underestimated the crucial impact of population changes on global events. He looks at how demography has had a major influence, from world wars to China’s rise; and from the Arab Spring to Brexit.In the distant past people could walk all the way from continental Europe to England through the ancient region of Doggerland. Julia Blackburn scours the Suffolk coastline for this lost land which was submerged by rising sea levels around 5000 BC.As the debate around the border between the Republic and Northern Ireland continues to dominate discussions on Brexit, the historian Diarmaid Ferriter explains how this line became a political battleground. The meandering boundary which cuts through fields and crosses rivers was once dotted with watchtowers and military checkpoints to stop movements of people and goods. Producer: Katy Hickman

We have been obsessed with the ideal body since Renaissance artists rediscovered nudity, says art historian Jill Burke. She tells Andrew Marr how artists including Botticelli, Leonardo da Vinci, Michelangelo, and Titian established rigid beauty standards and an obsession with the body that we still live with today.Our image of power was hugely influenced by the Elizabethan miniaturist Nicholas Hilliard. To mark his 400th anniversary, historian Elizabeth Goldring reexamines the artist who painted all the principal rulers of his day, including Queen Elizabeth and James I. Hilliard's tiny images encapsulated political power in a portrait.Elizabethan ideas of power and beauty are unpicked in Christopher Marlowe's play Edward II, the story of a king whose homosexuality brings his downfall. Tom Stuart plays the titular role at The Globe and has written a new sequel, After Edward, exploring the persecution and politicisation of homosexuals today.Playwright Martin Sherman wrote the iconic play about gay persecution, Bent, and has returned to themes of desire and persecution in his new work. Gently Down the Stream addresses the challenges of love between the generations, and asks what we should do with the history and ideals we have inherited from the past.Producer: Hannah Sander

How far does evolution explain mental health? The psychiatrist Randolph Nesse tells Kirsty Wark that negative emotions make sense in certain situations but can become excessive. He argues that positioning disorders in light of natural selection helps explain the ubiquity of human suffering - and may help in finding new paths for relieving it.The neuropsychologist AK Benjamin investigates the boundaries of sanity and madness in his book, Let Me Not Be Mad. Through a series of consultations with patients, he explores the mind unravelling at the seams. But the question remains whether this unravelling mind belongs to the doctor or the patient.The poet George Szirtes looks at the damaging impact of international events on a single family, in his memoir of his mother Magda. The Photographer At Sixteen follows Magda from her teenage life in Hungary, through political uprisings, internment in two concentration camps and transition to life in England. He explores the effect of an unravelling world on a family's mental health.Producer: Katy Hickman