The latest national and international news, exploring the day's events from a global perspective.

Will Millard travels the length of the River Taff and explores how it once ran black with coal dust, but is now one of the finest trout and salmon rivers in Wales. Show more

In Didcot, Peter Snow is joined by train lovers, collectors and enthusiasts across Britain. Peter challenges Ian McMillan to write a poem about the Flying Scotsman. Show more

First of a two-part documentary in which David Hayman uncovers the story of the battle for control of the North Sea during the First World War. Show more

Rev Richard Coles dives beneath the surface of children's classic The Water-Babies to reveal the revolutionary science behind the story and the influence it had on social reform. Show more

Dr Jago Cooper uses scientific and archaeological evidence to argue that Easter Island's demise was not solely due to its inhabitants' wilful use of its natural resources. Show more

Series following Adam Nicolson and the threatened seabirds of the Shiant Isles. In Iceland, Adam sees colonies where nearly all the birds have been wiped out. Show more

First of a two-part documentary in which David Hayman uncovers the story of the battle for control of the North Sea during the First World War. Show more

Stephen Smith explores how Vienna's artists rebelled against the establishment in the late 19th century and brought their own highly sexed version of art nouveau to the city. Show more

Dan Cruickshank explores the secrets of the bridges that have made London what it is. Along the way, he uncovers stories of the sublime ambition of London's bridge builders. Show more