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Opium trade to synthetic opiates

Tom Sutcliffe with Amitav Ghosh, Richard Brittan and Fiona Measham.

• 42 mins

Global influences

Kirsty Wark with Josephine Quinn, Carolina Rangel de Lima and Christopher Harding.

• 42 mins

Arts: changing the world?

Tom Sutcliffe with Ellen E Jones, Hew Locke and Noora Niasari

• 41 mins

Weighty issues

Tom Sutcliffe with Naveed Sattar, Stephanie Yeboah and Henry Dimbleby

• 41 mins

Mysterious Plants

Kirsty Wark with Chris Thorogood, Kelsey Byers and William Milliken

• 41 mins

Time passing: ageing, memory and nostalgia

Adam Rutherford with Venki Ramakrishnan, Charan Ranganath and Agnes Arnold-Forster

• 41 mins

Intrigue and disinformation from the Russian Revolution to Ukraine invasion

Tom Sutcliffe with Andrey Kurkov, Peter Pomerantsev and Charlotte Jee.

• 41 mins

Crossing borders and belonging

Adam Rutherford with Viet Thanh Nguyen, Helena Lee and Jessica J Lee.

• 41 mins

The war between science and religion

Tom Sutcliffe with Michael Taylor, Nick Spencer and Frances Flinter.

• 42 mins

Music and poetry

Kirsty Wark discusses poetry and music with Alison Balsom, Graeme Lawson and John Burnside

• 41 mins

Power to the people

Tom Sutcliffe discusses democracy with Erica Benner, Alpa Shah and Bobby Duffy.

• 41 mins

City living

Adam Rutherford explores the city with Ben Power, Amanda Levete and Simon Kuper.

• 41 mins

Alien life and gravity

Tom Sutcliffe with Lisa Kaltenegger, Claudia de Rham and Mark Fromhold

• 41 mins

Protest and patriotism

Jackie Kay, Caroline Lucas and Simon Heffer with Adam Rutherford.

• 41 mins

Bees – culture and survival

Tom Sutcliffe with Wolfgang Buttress, Claire Preston, Lars Chittka and Alison Benjamin

• 41 mins

Art: market, money and malfeasance

Tom Sutcliffe with Francesca Whitlum-Cooper, Orlando Whitfield and Angelina Giovani

• 42 mins

Reading the Bible

Kirsty Wark swaps Bible stories with Marilynne Robinson, Naomi Alderman and Malika Booker

• 41 mins

Hay Festival: ancient wisdom and ecology

Adam Rutherford with Robin Wall Kimmerer, Hugh Warwick and Olivia Laing at Hay Festival

• 42 mins

‘Left behind’, but not forgotten

Tom Sutcliffe with Paul Collier, Joanna Kusiak and Matthew Xia.

• 41 mins

Politeness and civility

Adam Rutherford with Louise Mullany, John Gallagher, Susie Dent and Matt Forde.

• 42 mins

Animal communication

Tom Sutcliffe with Martin Wikelski, Kapka Kassabova and Ilyena Hirskyj-Douglas

• 42 mins

Weaving magic in words, clay and paper

Kirsty Wark with Kathleen Jamie, Jennifer Lucy Allan, Mark Hearld and Naomi Robertson

• 41 mins

On Freedom

Tom Sutcliffe with Timothy Snyder, Oksana Maksymchuk and Lucy Ash

• 41 mins