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

Julia Bradbury follows the trail of Britain's lost rail empire on a line from Weymouth and across the unique coastal features of Chesil Beach and Portland. Show more

Dan explores the high-rise flat in London's East End. He charts the history of the Lincoln estate, which went from a dream of luxury to deprivation and social exclusion. Show more

Science documentary series. Horizon goes behind the scenes at Nasa to discover how it is preparing for its most ambitious mission - to land astronauts on the surface of Mars. Show more

Rhod Gilbert and Midge Ure set off on an epic road trip across Scotland, Northern Ireland and Wales as the search begins for the UK's best part-time band. Show more

Smash hits from 60 years of great cover versions in performance from the BBC TV archive, featuring Alexandra Burke, The Moody Blues, Soft Cell, Mariah Carey, UB40 and many more. Show more

Documentary revealing the secret world of the 'ghost singers' who provided the vocals for the screen legends who did not sing their own songs in the great Hollywood musicals. Show more

The story of Britain through its art and treasure. This episode looks at the Middle Ages, from the murder of Thomas Becket in 1170 to the death of Richard II in 1400. Show more

Science documentary series. Horizon goes behind the scenes at Nasa to discover how it is preparing for its most ambitious mission - to land astronauts on the surface of Mars. Show more