Katty Kay in Washington and Christian Fraser in London return to report on the events that are shaping the world.
The latest scientific insights into icebergs, from side-scanning sonar scrutinising the edge of glaciers to pictures that give us a unique glimpse of how they transform over time. Show more
As many as 250,000 boys under the age of 18 served in the British Army during World War I. Fergal Keane looks at their stories and tries to find out what made them enlist. Show more
Documentary. Designer and engineer Zoe Laughlin explores the world of material science, uncovering the innovations in manufacturing that are set to change the world we live in. Show more
Psychological drama. A biographer, hearing the previously untold dark and disturbing life story of a dying novelist, is compelled to finally face the trauma of her own past. Show more
A documentary taking viewers on a journey through fear and cinema, and asking whether horror movies know us better than we know ourselves. Show more
Writer Andrew Hussey travels through the glorious art and surprising history of an extraordinary French institution to show that the story of the Louvre is the story of France. Show more
Carved with Love: The Genius of British Woodwork
Episode 3: The Divine Craft of Carpentry
55 minutes on BBC Four
A look at how carvers and carpenters of the Middle Ages created wonders that still astound, from the roof of Westminster Hall to the Coronation Chair. Show more
The latest scientific insights into icebergs, from side-scanning sonar scrutinising the edge of glaciers to pictures that give us a unique glimpse of how they transform over time. Show more