The prize-winning writer John Lanchester considers the political endgame of a fractious world in his new novel, The Wall. He tells Amol Rajan why he has written a dystopian fable in which the young distrust the old, and the world appears broken.But just how violent are we as a species? The primatologist Richard Wrangham believes there is a 'goodness paradox': at an individual level we have evolved to become a more peaceful animal, especially compared to our closest relatives, the chimpanzee; but our ability to organise and plan an attack has made us lethal.The ancient Assyrians celebrated every detail of cruelty, massacre and torture, including skinning prisoners alive, as they built their empire and conquered their enemies. The academic Eleanor Robson looks back at the reign of the King Ashurbanipal from the 7th century BC, immortalised in an exhibition at the British Museum.Shortly after the King’s death the Empire fell. Dr Patricia Lewis is an expert on international security and studies the ebb and flow of wars across the world from chemical warfare to cyber-attacks. She looks ahead to the major conflicts to watch in the coming year.The above image is from the British Museum’s exhibition I Am Ashurbanipal: King of the World, King of AssyriaProducer: Katy Hickman

Andrew Marr starts the year in search of happiness with the behavioural scientist and happiness professor Paul Dolan. Dolan has advised the government on how to measure wellbeing, and in his latest book Happy Ever After argues that we’ve been sold a lie about the sources of happiness. The route to fulfilment may be far more unexpected that we thought.The writer Laura Freeman deplores what she calls the current Pollyana tendencies to ‘keep smiling’ via the mood-tracker apps on your phone. Freeman recounts how she herself found an appetite for life, after years of suffering with anorexia, through her love of reading.The science journalist Linda Geddes explores the impact of sunlight on our minds and bodies. In Chasing the Sun she looks at its significance in improving our health, sleep, productivity and mood.But what if our mood is really affected not by our mind, but our bodies? Professor Edward Bullmore has studied the link between mental health and physical inflammation, and argues that we need to look more closely at our immune system in the treatment of depression.Producer: Katy Hickman

On Christmas Eve, Andrew Marr explores the mysteries of snow and ice. Michelle Paver's novels dwell in the darkest places: an Arctic hut in midwinter haunted by ghosts, an isolated mountain peak, and a prehistoric frozen forest. She explains the appeal of these inhospitable settings, and asks why the cold still terrifies us.Ben Saunders knows the sounds and smells of ice better than most. As one of the world's leading polar explorers he has skied to the North Pole and completed Scott and Shackleton's aborted trip to the South Pole. He describes the exhaustion, frustration and wonder of life on a frozen sea.Materials scientist Mark Miodownik knows that liquids are not to be trusted, even when frozen solid. His latest book, Liquid: The Delightful and Dangerous Substances That Flow Through Our Lives, unpicks the cracks, creaks and crystals of ice.Poet and writer Nancy Campbell set out from the world's northernmost museum to understand our fascination with ice and snow. Her new book, The Library of Ice: Readings from a Cold Climate,brings to life the people who dwell in these icy landscapes, many of which are now disappearing.Producer: Hannah Sander

Kirsty Wark explores national stories and myths – from both inside and outside a country’s borders.Neil MacGregor discusses how Dickens, Monty Python and the Suez Crisis have influenced the way Britain is perceived abroad. He visits five different countries to find out which historical events, cultural influences and objects have shaped the way how others see us. The answers may well surprise people back home. Sweden has a strong sense of its own national identity: it boasts the world’s oldest free press and prides itself on its special brand of social democracy. But the journalist Kajsa Norman looks beyond this utopian myth to expose the darkness in the Swedish soul. She reveals what happens to those who dare to dissent from consensus.Japan’s national image abroad is one of staid tradition mixed with bizarre pop culture, and the samurai warrior alongside the grey mass of ‘salarymen’. But the academic Christopher Harding argues there is far more to Japanese society than these enduring clichés. He looks at how Japan has been reinventing itself over the last century and a half, and the often radical and outspoken resistance to conformity.Producer: Katy Hickman

Trees may have vibrant inner lives and certainly appear to have individual personalities, claims the forester-cum-writer Peter Wollheben. In his bestselling book, The Hidden Life of Trees, he uncovers an underground social network of communication between trees.In the late 1990s the journalist Ruth Pavey purchased four acres of scrub woodland in Somerset, and set about transforming this derelict land into a sanctuary for woodland plants, creatures and her own thoughts. The natural world comes alive in the poetry of Kathleen Jamie. Although her landscape is often her Scottish homeland, politics, history and human folly are never far away, as she asks how we can live more equably with nature.And breathing clean air is the goal of Gary Fuller’s book, The Invisible Killer. He studies the rising threat of air pollution from London’s congested streets to wood-burning damage in New Zealand.Producer: Katy Hickman

Today's battle for political power began with Thomas Cromwell, argues Diarmaid MacCulloch. In a landmark new biography he tells Tom Sutcliffe how Henry VIII's chief reformer claimed power from Europe and the pope - and gave it to an English parliament instead. But Cromwell is one of the most notorious figures in history, admired as a master statesman and reviled as a Machiavel.Acclaimed playwright James Graham dramatises the political power-play of the Brexit campaign in his new Channel 4 drama. Starring Benedict Cumberbatch as Dominic Cummings, the driving force behind Vote Leave, Graham depicts ten weeks of machinations that forever changed Britain's relationship with Europe.Isabel Hardman, Assistant Editor of the Spectator, has followed the political upheavals of Brexit closely. In her book Why We Get the Wrong Politicians she looks at the demands made on MPs and how this has changed over time. She argues that their role has shifted from legislator to constituency worker - and that our political system is worse as a result.And Professor Steven Fielding looks back at the MPs have been depicted in culture. But where novelist Anthony Trollope's fictional Prime Minster is a hero, Fileding argues that the MPs found in The Thick of It and Yes Minister are uniformly venal and cowardly.Producer: Hannah Sander

The director Paulette Randall brings to the stage the ultimate tale of sacrifice in the pursuit of power: Doctor Faustus. She tells Andrew Marr how, in coveting fame, power and knowledge, he sells his soul to the devil. This bargain with the devil is one of the most iconic cultural motifs in the Western tradition.The poet and writer Ann Wroe looks to another founding story of Christianity, that of St Francis of Assisi. Born into luxury he forsakes it all after hearing the voice of God commanding him to rebuild the Church and live in poverty. Wroe writes his life story in verse and see echoes of it all around her today.The philosopher Julian Baggini sees such ancient stories as helping to explore and explain how people think in the West. But in his new book, How the World Thinks, he admits his own failures to learn about the stories and early philosophies which have come out of the East. Without them, he argues, you cannot understand the development of distinct cultures around the world.The novelist and essayist Amit Chaudhuri has looked far and wide for his influences, from Nobel laureate Tagore and filmmaker Satyajit Ray to Cervantes’s Don Quixote. In The Origins of Dislike he explores the way writers understand their work both in antithesis to, and affinity with, past writers and movements from around the world.Producer: Katy Hickman

A stifling culture of safety is now spreading throughout Western academic institutions leading to a crisis in mental health, according to the social psychologist Jonathan Haidt. He tells Amol Rajan that the current obsession with ‘safe spaces’ and no-platforming, is not only a breach of freedom of speech, but is creating a generation unable to cope with modern life.But the commentator Yasmin Alibhai-Brown argues that free speech has often been used as a justification to spout hate speech and prejudice. She defends political correctness as a means to build a safer, more compassionate world.The writer Olivia Sudjic made her name after the publication of her debut novel Sympathy which explored surveillance and identity in the internet age. But as she became the focus of attention she felt trapped in a spiral of self-doubt. She looks at the epidemic of anxiety among the so-called ‘snowflake’ generation.Changing attitudes are at the heart of Mark Ravenhill’s new play, The Cane. Should a well-respected teacher be punished retrospectively for past actions which are now deemed unacceptable, but few questioned at the time?Producer: Katy Hickman

Poland turns 100 this November. The country had existed for a thousand years but it was only in 1918 with the Treaty of Versailles that an independent Poland was created. Amol Rajan explores its turbulent history.No nation's story has been so distorted as Poland's, says historian Adam Zamoyski. He looks back to the great medieval nation that was once a European heavyweight. But Russia, Prussia and Austria divided Poland up in 1797 and turned it into a backwater - before the Nazis and Soviet soldiers arrived to do more damage.The decades since independence in 1918 have seen extraordinary twists in the tale. Composer Roxanna Panufnik combines Polish poetry with a Catholic mass in her new oratorio Faithful Journey - Mass for Poland. This huge work for choir and orchestra covers the bloodshed of two world wars, the relative prosperity and optimism of the 1930s, the censorship of communist rule and a new hope for the coming years.In the 1950s Stalin offered the people of Warsaw a choice between two gifts: a metro system or a vast skyscraper. They asked for the metro. He built the Joseph Stalin Palace of Culture and Science instead. Today the Palace is one of Poland's most recognisable sights and has starred on the cover of Vogue. But Michal Muraswki explains that to Poles today the Palace represents their communist legacy - something that the ruling Law and Justice Party are keen to forget,The reforms of the Law and Justice Party, including a move to ban all abortions, have been met with criticism at home and abroad. Award-winning journalist Witold Szablowski examines Poland's relationship with Europe, with its neighbours and with its past.Producer: Hannah Sander

Andrew Marr talks to the journalist Lindsey Hilsum about the extraordinary life of the war correspondent Marie Colvin. Throughout her career she travelled to the most dangerous places in the world, to bear witness to the suffering of ordinary people caught up in extraordinary events. She wrote: “it has always seemed to me that what I write about is humanity in extremis, pushed to the unendurable, and that it is important to tell people what really happens in wars.’ She was killed in Syria in 2012.For most of her career Marie Colvin wrote for The Sunday Times newspaper. Eve Pollard knows only too well the added pressures of getting a scoop for the nation’s weekend papers, as she formerly edited both the Sunday Mirror and the Sunday Express. She’s now the UK Chair of Reporters Without Borders which this week will honour courage, impact and independence in journalism.Anabel Hernandez is an investigative reporter who has fought to lay bare the terrible facts behind the disappearance of forty-three Mexican students in 2014. Her book, A Massacre in Mexico, details the systemic corruption and cover-up among state officials, from the local police to government ministers.It is a hundred years since the poet Wilfred Owen died in battle, just a week before the end of WWI. The poet Gillian Clarke explores how Owen’s poetry brought to light the physical and mental trauma of combat, and how in her own work she’s reflected contemporary conflicts. Producer: Katy Hickman