Ancient Greece and Rome loom large in the understanding of the roots of Western Civilisation, but the Professor of Ancient History Josephine Quinn wants to challenge that simple narrative. In How The World Made The West – A 4,000 Year History she shows how western values were developed by long-standing links between a much larger group of cultures, from the Gobi Desert to the Atlantic Ocean and beyond.The British Museum’s major new exhibition Legion looks at life in the Roman army (on until 23rd June). This elite war machine was employed to protect and control around a quarter of the Earth’s population for over half a millennium. Recruits came from all walks of life, and from across the Empire. The archaeologist Carolina Rangel de Lima reveals the impact this extraordinary diversity of cultures and beliefs had on the imperial Roman army. The writer Christopher Harding takes a closer look at the many ways in which Asia has influenced Europe and North America. In his book, The Light of Asia, he explores how Japan, China and India have often been sources of genuine fascination and artistic and intellectual inspiration, as well as confusion and misunderstanding.Producer: Katy Hickman

The trade in opium formed a backdrop to Amitav Ghosh’s best-selling novels, The Ibis Trilogy. In his latest work of non-fiction, Smoke and Ashes, he investigates the impact of that trade on Britain, India and China, and follows the money that was made by some of America’s most powerful and well-respected families. He reveals how the poppy plant enabled the financial survival of Empire and proved catastrophic for Indian farmers and Chinese users. In the 21st century Afghanistan became the biggest grower of poppies, producing more than 80% of the world's opium. The former soldier, Richard Brittan, set up the company Alcis, to provide an accurate picture of what’s going on on the ground in Afghanistan by using satellite imagery. As well as tracking the workings of the drugs trade, he explains the impact of the Taliban ban on poppy cultivation in 2023.Professor Fiona Measham, Chair in Criminology at Liverpool University, explains that one of the effects of the disruption to the opium trade has been a large increase in the number of synthetic opiates – fentanyl and nitazenes – filling the vacuum. China has become the centre for the wider development of synthetic drugs that emulate plant-based street drugs, but are much stronger and potentially lethal. The charity The Loop, set up by Measham, is instrumental in checking drugs to better understand what is being sold on the streets.Producer: Katy Hickman

The history of glass-making dates back to at least 3,600 years ago in Mesopotamia, and both manufactured and naturally-occurring glass have been used in a wide variety of objects across the world. The curator and director of the Stained Glass Museum in Ely, Jasmine Allen, looks back at its long and varied history, highlighting its practical and artistic qualities. In the last century or so its industrial heartlands in Britain have been in the Black Country and the north east of England. John Parker, Professor of Glass Science at the University of Sheffield and curator of the Turner Museum of Glass, is an expert on the history of glass in this region, and the impact of mechanisation at the end of the 1800s.A new exhibition, The Glass Heart, at Two Temple Place in London (until 21st April) showcases industrial glass making as well as contemporary artworks. The artist and glassblower Ayako Tani finds inspiration in traditional calligraphy for her glass art, as well as the more recent development of glass ships in bottles from the 1970s.Glass can be moulded into all shapes and sizes and developed with different strengths, but the materials scientist Professor Claire Corkhill from the University of Bristol says it’s still quite a difficult and mysterious material. Her research is looking into innovative ways to use glass, and exploring whether it could even be the answer to the growing dilemma of managing Britain’s radioactive waste.Producer: Katy Hickman

The legal framework to prosecute war crimes and prohibit the use of ‘aggressive war’ came out of the international war crimes tribunals after WWII – in Germany and Japan. In Judgement at Tokyo the academic and writer Gary J. Bass retells the dramatic courtroom battles as Japan’s militaristic leaders were held accountable for their crimes. With prosecutors and judges drawn from eleven different Allied countries tensions flared, and justice in the Asia Pacific played out amidst the start of the Cold War, China's descent into civil war, and the end of the European empires.The political philosopher Hannah Arendt witnessed the end of the trial of the Nazi Adolf Eichmann in Jerusalem in 1963, coining the phrase ‘the banality of evil’ – a term that is often mistakenly believed to mean that evil had become ordinary. In We Are Free To Change The World, the writer Lyndsey Stonebridge explores Arendt’s writings on power and terror, love and justice, and their relevance in today’s uncertain times.As the world grows increasingly turbulent war crimes justice is needed more than ever, but it appears to be failing. Since the International Criminal Court in the Netherlands opened in 2002 it has jailed just five war criminals. The journalist and war reporter Chris Stephen looks back at its history and examines alternative options in The Future of War Crimes Justice.Producer: Katy Hickman

The data analyst Hannah Ritchie challenges the doomsday climate scenarios dominating the headlines to argue for a more hopeful outlook. In Not the End of the World: How We Can Be the First Generation to Build a Sustainable Planet she uses the data to show what progress has been made, and what actions will have the most impact in the future.Capitalism, consumerism and unfettered growth are often blamed for the climate crisis, but the Bloomberg journalist Akshat Rathi believes that capitalism is the best means we have to tackle the issues in time. In Climate Capitalism he meets the business people and politicians from around the world who are finding innovative ways to go green.The oceanographer and Joint Director of the UK National Climate Science Partnership, Professor Michael Meredith often works in one of the most difficult and least understood areas of the planet - the Southern Ocean around the Antarctic. He believes that while individual actions and choices are important to tackle climate change, only stronger worldwide governance can slow the irreversible effects of ice sheet decline and rising sea levels.Correction: during the live broadcast we mistakenly stated that Britain gets more than 40% of its energy from renewables, instead of 40% of its electricity.Producer: Katy Hickman

A Century of Labour is examined by Jon Cruddas, discussing successes and failures, and the competing visions of the party. Jane Green looks at the impact of Brexit on voting habits, including the new divide between Leavers and Remainers. Jonathan White argues for long-term solutions in politics, rather than solely focusing on short-term policies. The podcast explores the challenges of politics, the consequences of the EU referendum, and the significance of the concept of the future in politics and society.

Prof. Mike Wooldridge and Naomi Alderman discuss the impact of AI in various fields including medicine and the arts. Prof. David Runciman raises concerns about the collaboration between AI and states/corporations. The podcast explores the power and control of states and corporations, the limitations of democracy, the humanizing quality of humanity, and the concentration of power in technology billionaires. Other topics include the impact of social media, technological watershed years, biases in AI, and the need to address AI-generated hallucinations.

With the fall of the Soviet Union, the theoretical physicist Armen Sarkissian returned home and became first the Prime Minister and then the President of the newly reformed state of Armenia. In his book, The Small States Club: How Small Smart States Can Save the World, he argues that successful smaller nations have had to learn to be more agile, adaptive and cooperative, compared to the world’s ‘greater’ powers.The world map has changed considerably, especially in the 19th and 20th century, as empires fell apart and smaller nations fought for independence. The Canadian historian Margaret MacMillan looks back at this time, and considers how small states survive during times of conflict. In 2018 she presented the BBC’s Reith Lectures, The Mark of Cain, on the tangled history of war and society. The BBC’s Chief International Correspondent Lyse Doucet is no stranger to conflict in the world, as she has covered all the major stories across the Middle East and North Africa for the past two decades. But she is also interested in the way small states have been instrumental in mediating world conflicts, and punching above their weight on international issues like the climate crisis.Producer: Katy Hickman

The podcast explores the numbers behind the games we play and how understanding math can give you an edge. It discusses game-playing in the medieval world and the historical authenticity of video game settings. The murder-mystery riddle Murdle is also highlighted, combining Cluedo and Sudoku. The chapter chapters delve into the difficulty of defining a game, the purpose of playing games, and the connection between games and different cultures. It also explores the concept of gamification and the role of games in generating happiness.

Tim Peake, the first British astronaut to visit the International Space Station, discusses the human story of space exploration. Topics include the beauty of Earth, the selection process for space missions, living in space, and the impacts of a world without stars on human civilization. The significance of standing stones and the connection between humans and the universe are also explored.