BBC Four HD Chris Beardshaw flies to Cornwall to help a school create a tropical paradise in its backyard. On the way, he takes a dip in the ocean in search of plants that have washed in from South America. 2026-09-08 A look at how attention turned from civilisation and kings to the search for the common man against a background of science and competing political ideologies. 2026-09-08 Julian of Norwich. The story of Revelations of Divine Love, the first book written in English by a woman. 2026-09-08 Programmes start at 7.00pm. 2026-09-08 2026-09-08 2026-09-08 2026-09-08 Programmes start at 7.00pm. 2026-09-08 Tim Dunn sees Swindon's railway village and explores the past of Milan's monumental station. 2026-09-08 Peripatetic gardener Chris Beardshaw flies to the south west in search of hedges. He visits the gardens of RHS Rosemoor in Devon and Antony House in Cornwall. 2026-09-08 Stately sitcom. Audrey waits for DeVere to go away before she herself goes on holiday. 2026-09-08 Sitcom. Hyacinth decides to have a second attempt at finding a small weekend home in the country, but she and Richard have different views on the word 'small'. 2026-09-08 Popular 1970s sitcom about a middle-class, middle-aged rebel. Why is Reggie referring to his mother-in-law as a hippopotamus. 2026-09-08 Reggie Perrin needs a month's holiday, but all he gets is an afternoon in a safari park with his wife, daughter, son-in-law and their two 'tiny adults'. 2026-09-08 Documentary detailing the killer wave which struck the coast of the Bristol Channel in 1607. Two scientists are increasingly convinced that the wave was actually a tsunami. 2026-09-08 A museum in Osaka asks the Mayuyamas for help with artefacts currently hidden away in their archive: an exquisite 800-year-old celadon vase from China and a 16th-century tea bowl. 2026-09-08 Documentary. Jim Al-Khalili takes a look at how we've created machines that can simulate, augment, and even outperform the human mind - and why this shouldn't spook us. 2026-09-08 Marcus du Sautoy demystifies the hidden world of algorithms, revealing where these 2,000-year-old problem-solvers came from, how they work and what they have achieved. 2026-09-08 Peripatetic gardener Chris Beardshaw flies to the south west in search of hedges. He visits the gardens of RHS Rosemoor in Devon and Antony House in Cornwall. 2026-09-09 Documentary detailing the killer wave which struck the coast of the Bristol Channel in 1607. Two scientists are increasingly convinced that the wave was actually a tsunami. 2026-09-09 Documentary. Jim Al-Khalili takes a look at how we've created machines that can simulate, augment, and even outperform the human mind - and why this shouldn't spook us. 2026-09-09 Programmes start at 7.00pm. 2026-09-09 2026-09-09 2026-09-09 2026-09-09 Programmes start at 7.00pm. 2026-09-09 Fred Dibnah looks at how carpenters have used their talents to transform buildings such as Stokesey Castle, Little Moreton Hall and Harvington Hall. 2026-09-09 Ben Robinson unearths the past of Greyabbey, a village on Northern Ireland's beautiful Strangford Lough, and discovers the history of its moneymaking kelp industry. 2026-09-09 Dan Snow and team take on the rapids of the Grand Canyon in antique wooden boats to rediscover one of the wild west's great adventures of discovery. 2026-09-09 Amateur footage offers new insights into life in prewar Germany and during World War II. Contains some violence and disturbing scenes. 2026-09-09 Actor Spencer Banks reflects on his leading role in the 1974 Play for Today Penda's Fen. 2026-09-09 An awakened force in the landscape challenges a boy's clear and intense view of the world. Contains scenes which some viewers may find upsetting. 2026-09-09 Dan Snow and team take on the rapids of the Grand Canyon in antique wooden boats to rediscover one of the wild west's great adventures of discovery. 2026-09-09 Amateur footage offers new insights into life in prewar Germany and during World War II. Contains some violence and disturbing scenes. 2026-09-09