BBC Four Today

Coverage of the evening session on day four from the Crucible Theatre in Sheffield, featuring the conclusion of Robert Milkins' first-round match and the start of Barry Hawkins'

A look at the emergence of Steve Davis and the rise of promoter Barry Hearn's Matchroom group of players, which brought lucrative sponsorships into the game

First of two documentaries following the final stages of the construction work on the Elizabeth Line underground railway beneath the streets of London

Documentary detailing America's determination to put a man on the moon ahead of Soviet Russia, beginning with the launch of Sputnik 1 in 1957

A look at how Wernher von Braun's Redstone rocket successfully launched US navy test pilot Alan Shepard 116 vertical miles into space, allowing the American space programme to grow

Kenneth Clark explores the reawakening of European civilisation in the 12th-century

Kenneth Clark travels from the Loire through Tuscany and Umbria to the cathedral at Pisa, where he looks at the aspirations of later medieval culture in France and Italy

A look at the emergence of Steve Davis and the rise of promoter Barry Hearn's Matchroom group of players, which brought lucrative sponsorships into the game