BBC Four HD Art critic Matt Collings explores the most famous equations in science and realises that concepts of beauty and elegance have been used by many scientists to advance their work. 2026-08-12 Chris Beardshaw follows in the footsteps of the Scottish adventurers who travelled the globe and risked their lives to bring back plants that are now taken for granted. 2026-08-12 Ardal O'Hanlon explores a 1930s quest to find the first Irish men and women using archaeology, answering his deepest questions about what it means to be Irish. 2026-08-12 Programmes start at 7.00pm. 2026-08-12 2026-08-12 2026-08-12 2026-08-12 Programmes start at 7.00pm. 2026-08-12 Ben Robinson visits Culross, a stunning 17th-century village that was a major centre for Scottish coal mining and the first underwater sea coal shaft in the world. 2026-08-12 Series in which Julia Bradbury explores the work of fell walker and author Alfred Wainwright. Julia is in the Borrowdale Valley to climb to the summit of Castle Crag. 2026-08-12 Alastair Sooke charts the fall of the Roman Empire through some of its artistic treasures, including one of the best preserved Roman cities in Libya. 2026-08-12 Mary Beard explores the physical world of the Roman Empire. 2026-08-12 The situation in the east now threatens Tiberius's position as emperor. Deals with adult themes. 2026-08-12 Series chronicling the reigns of four Roman emperors. Germanicus has been murdered in Antioch, and his wife Agrippina is convinced Tiberius ordered the killing. Deals with adult themes. 2026-08-12 Alastair Sooke charts the fall of the Roman Empire through some of its artistic treasures, including one of the best preserved Roman cities in Libya. 2026-08-12 A remarkable journey into the secret world of bats. Cutting-edge night-vision cameras follow the hidden life of a greater horseshoe bat roost for four months. 2026-08-12 Series in which Julia Bradbury explores the work of fell walker and author Alfred Wainwright. Julia is in the Borrowdale Valley to climb to the summit of Castle Crag. 2026-08-13 Ben Robinson visits Culross, a stunning 17th-century village that was a major centre for Scottish coal mining and the first underwater sea coal shaft in the world. 2026-08-13 Mary Beard explores the physical world of the Roman Empire. 2026-08-13 Programmes start at 7.00pm. 2026-08-13 2026-08-13 2026-08-13 2026-08-13 Programmes start at 7.00pm. 2026-08-13 Ben Robinson explores the remains of a lost harbour in Port Carlisle, a once-thriving port that hoped to rival Liverpool. 2026-08-13 Julia Bradbury explores the work of fell walker Alfred Wainwright. She faces Scafell Pike, England's highest peak, and must reach the 978m summit before darkness falls. 2026-08-13 Using original witnesses, Ben Macintyre recreates the remarkable story of how one brilliant team, and one dead tramp, pulled off a deception which changed the course of WWII. 2026-08-13 Actors and collaborators look back at the Coen brothers' remarkable career. Contains some strong language and some violent scenes. 2026-08-13 A week in the life of Llewyn Davis, a struggling folk singer in 1961 New York. Contains strong language and some violent scenes. 2026-08-13 Detective John Shaft is hired by a Harlem gangster to rescue his kidnapped daughter. Contains very strong language, some sexual content and some violence. 2026-08-13