BBC Four HD

Programmes start at 7.00pm.

In China's far south west, rich jungles nestle below towering peaks. Jewel-coloured birds and ancient tribes share forested valleys where wild elephants still roam.

Samira Ahmed reveals how Iran preserved its distinctive language and culture despite the Arab conquest of Persia.

Robert Robinson hosts as Frank Muir, Jenny Agutter and Tim Rice take on Patrick Campbell, Sinead Cusak and Nigel Dempster in a game of word definitions and deceptions.

Joseph Cooper invites viewers to test their musical wits against Camilla Jessel, Robin Ray and Edward Boyle. With guest musician Mitsuko Uchida.

Astronaut Tim Peake's video diary of the two years leading up to his arrival at the International Space Station in December 2015.

Using dramatic reconstruction, declassified cockpit audio recorded by the astronauts themselves and film archive, this is the untold story of the first moon landing.

First transmitted in 1966, Horizon reports from the spacecraft centre in Houston, Texas.

Joseph Cooper invites viewers to test their musical wits against Camilla Jessel, Robin Ray and Edward Boyle. With guest musician Mitsuko Uchida.

Astronaut Tim Peake's video diary of the two years leading up to his arrival at the International Space Station in December 2015.

Samira Ahmed reveals how Iran preserved its distinctive language and culture despite the Arab conquest of Persia.

Programmes start at 7.00pm.

Programmes start at 7.00pm.

Starting in Wakefield, Michael visits the National Coal Mining Museum for England.

Julia Bradbury explores the work of fell walker Alfred Wainwright. Here she climbs Helm Crag, defined by the rock formations at its summit nicknamed the Lion and the Lamb.

Classic sitcom. When a scandal breaks in the City, Jim Hacker and Sir Humphrey cannot agree on who should be the new governor of the Bank of England.

Classic political sitcom. Jim Hacker meets a local councillor who has radical ideas about local government. The PM likes what he hears, unlike Sir Humphrey.

Thomas Cromwell is revealed as a revolutionary who laid the foundations of modern Britain.

Sir Andrew Motion discovers an unpublished poem by Philip Larkin when he visits Hull to meet one of the poet's ex-lovers, Betty Mackereth, speaking of her love for the first time.

1/2. Ken Burns recounts how the collision between two opposing views of the natural world saw the buffalo, which had numbered in the tens of millions, driven to the brink of extinction.