Andrew Marr with Peter Wohlleben, Kathleen Jamie, Ruth Pavey and Gary Fuller.
Trees: a wood wide web
National myths with Neil MacGregor
Neil MacGregor, Christopher Harding and Kajsa Norman with Kirsty Wark.
Ice and Snow
Andrew Marr with Michelle Paver, Ben Saunders, Mark Miodownik and Nancy Campbell.
Searching for happiness
Andrew Marr with Paul Dolan, Linda Geddes, Laura Freeman and Edward Bullmore.
Violence and Conflict
John Lanchester, Patricia Lewis, Richard Wrangham and Eleanor Robson with Amol Rajan
Art, truth and power
Andrew Marr with Fiona Benson, Louise Pullen, Stephen Bayley and Liam Bright.
The health of science
Tom Sutcliffe with Sir Robert Lechler, Jo Dunkley, Bernie Bulkin and Elizabeth Pisani.
Who is watching you?
Shoshana Zuboff, John Thornhill and Ece Temelkuran with Andrew Marr.
The mind unravelling
Kirsty Wark with Randolph Nesse, AK Benjamin and George Szirtes.
The Eye of the Beholder
Andrew Marr with Jill Burke, Elizabeth Goldring, Tom Stuart and Martin Sherman.
Populations and contested lands
Amol Rajan with Paul Morland, Julia Blackburn and Diarmaid Ferriter.
Language and Culture
Andrew Marr with Jhumpa Lahiri, April De Angelis, Katrin Kohl and Marcus du Sautoy
The battle against so-called Islamic State
Kirsty Wark with David Nott, Azad Cudi, Joana Cook and Claire Foster-Gilbert
Andrew Marr with Xinran, Julia Lovell, David KS Tse and Roel Sterckx.
Art for all
Tom Sutcliffe with Karl Ove Knausgaard, Fiona MacCarthy, Tamsin Wimhurst and Alison Brown.
Free Thinking Festival
Tom Sutcliffe with Harriet Shawcross, William J Burns, Kathryn Tickell and Thomas Dixon
Andrew Marr with Nicci Gerrard, Sue Armstrong, John Agard and David Slater.
Andrew Marr with Booker prize-winning novelist Ian McEwan.
Life in the wilderness
Kirsty Wark with Dan Richards, Rebecca Frecknall, Sarah O'Connor and Heida.
Freedom: From Kierkegaard to Black Lives Matter
Amol Rajan with DeRay Mckesson, Clare Carlisle, Inua Ellams and Elizabeth Day
Icons of English literature
Andrew Marr with Marion Turner, Emma Smith and Juliet John.
Billy Bragg on anger and hope
Tom Sutcliffe with Kerry Hudson, Billy Bragg, Howard Brenton and Will Tanner.
Andrew Marr with Joshua Mezrich, Angela Saini, Caroline Criado Perez and Richard Ashcroft.
Jeanette Winterson, Naomi Wolf and John Browne join Tom Sutcliffe at the Hay Festival.
Jared Diamond on national crisis
Andrew Marr with Jared Diamond, David Runciman and Kate Andrews.
Beyond the headlines
Kirsty Wark with Chris King, Hussein Kesvani, Nicole Rousmaniere and Shahidha Bari.
Money - in your pocket and in the bank
Andrew Marr with John Guy, Miatta Fahnbulleh, Paul Tucker and Alice Tapper.
The power of poetry
Andrew Marr with Rowan Williams, Martin Sixsmith, Jay Bernard and Kate Clanchy
Epic quests and Greek myths
Stephen Fry, Alison Balsom, David Hare and Lucy Hughes-Hallett with Tom Sutcliffe
Discussion and debate on the big issues affecting British Asians.
More stories from a transvestite, a listener and a singer
Transvestite Alistair shares the importance of his life being Jennifer
Wynne celebrates Blaina as Town of the Week and finds out how drones are mapping the town.
News, views, issues and culture from across the north west of Northern Ireland.
Janice Forsyth in conversation with Adam Kay
Janice speaks to authors Kwame Alexander and Jason Reynolds and comedy from Double Denim.