Trees: a wood wide web

Andrew Marr with Peter Wohlleben, Kathleen Jamie, Ruth Pavey and Gary Fuller.

• 42 mins

National myths with Neil MacGregor

Neil MacGregor, Christopher Harding and Kajsa Norman with Kirsty Wark.

• 42 mins

Ice and Snow

Andrew Marr with Michelle Paver, Ben Saunders, Mark Miodownik and Nancy Campbell.

• 42 mins

Searching for happiness

Andrew Marr with Paul Dolan, Linda Geddes, Laura Freeman and Edward Bullmore.

• 42 mins

Violence and Conflict

John Lanchester, Patricia Lewis, Richard Wrangham and Eleanor Robson with Amol Rajan

• 42 mins

Art, truth and power

Andrew Marr with Fiona Benson, Louise Pullen, Stephen Bayley and Liam Bright.

• 42 mins

The health of science

Tom Sutcliffe with Sir Robert Lechler, Jo Dunkley, Bernie Bulkin and Elizabeth Pisani.

• 42 mins

Who is watching you?

Shoshana Zuboff, John Thornhill and Ece Temelkuran with Andrew Marr.

• 42 mins

The mind unravelling

Kirsty Wark with Randolph Nesse, AK Benjamin and George Szirtes.

• 42 mins

The Eye of the Beholder

Andrew Marr with Jill Burke, Elizabeth Goldring, Tom Stuart and Martin Sherman.

• 42 mins

Populations and contested lands

Amol Rajan with Paul Morland, Julia Blackburn and Diarmaid Ferriter.

• 42 mins

Language and Culture

Andrew Marr with Jhumpa Lahiri, April De Angelis, Katrin Kohl and Marcus du Sautoy

• 41 mins

The battle against so-called Islamic State

Kirsty Wark with David Nott, Azad Cudi, Joana Cook and Claire Foster-Gilbert

• 41 mins

Understanding China

Andrew Marr with Xinran, Julia Lovell, David KS Tse and Roel Sterckx.

• 42 mins

Art for all

Tom Sutcliffe with Karl Ove Knausgaard, Fiona MacCarthy, Tamsin Wimhurst and Alison Brown.

• 42 mins

Free Thinking Festival

Tom Sutcliffe with Harriet Shawcross, William J Burns, Kathryn Tickell and Thomas Dixon

• 50 mins

Ageing visibly

Andrew Marr with Nicci Gerrard, Sue Armstrong, John Agard and David Slater.

• 42 mins

Ian McEwan

Andrew Marr with Booker prize-winning novelist Ian McEwan.

• 42 mins

Life in the wilderness

Kirsty Wark with Dan Richards, Rebecca Frecknall, Sarah O'Connor and Heida.

• 42 mins

Freedom: From Kierkegaard to Black Lives Matter

Amol Rajan with DeRay Mckesson, Clare Carlisle, Inua Ellams and Elizabeth Day

• 42 mins

Icons of English literature

Andrew Marr with Marion Turner, Emma Smith and Juliet John.

• 42 mins

Billy Bragg on anger and hope

Tom Sutcliffe with Kerry Hudson, Billy Bragg, Howard Brenton and Will Tanner.

• 42 mins

Medical controversies

Andrew Marr with Joshua Mezrich, Angela Saini, Caroline Criado Perez and Richard Ashcroft.

• 41 mins

Hay Festival

Jeanette Winterson, Naomi Wolf and John Browne join Tom Sutcliffe at the Hay Festival.

• 42 mins

Jared Diamond on national crisis

Andrew Marr with Jared Diamond, David Runciman and Kate Andrews.

• 42 mins

Beyond the headlines

Kirsty Wark with Chris King, Hussein Kesvani, Nicole Rousmaniere and Shahidha Bari.

• 41 mins

Money - in your pocket and in the bank

Andrew Marr with John Guy, Miatta Fahnbulleh, Paul Tucker and Alice Tapper.

• 42 mins

The power of poetry

Andrew Marr with Rowan Williams, Martin Sixsmith, Jay Bernard and Kate Clanchy

• 42 mins

Epic quests and Greek myths

Stephen Fry, Alison Balsom, David Hare and Lucy Hughes-Hallett with Tom Sutcliffe

• 41 mins

Escaping the past

Andrew Marr with Susan Neiman, David Howell, Jane Green and Stuart Ward.

• 42 mins