The latest national and international news, exploring the day's events from a global perspective.
From Trinidad to Australia, Kenya to Barbados, Canada, India and beyond, film-makers capture the rich diversity of the Commonwealth and the work that people do. Show more
Stewart McPherson explores the UK Overseas Territories. He begins on the island of Tristan da Cunha, then visits the Falkland Islands, South Georgia and Antarctica. Show more
Michael Mosley investigates Porton Down, Britain's most secretive and controversial military research base. He comes face to face with chemical and biological weapons old and new. Show more
Neil Oliver investigates Britain's deadliest rail disaster at Quintinshill near Gretna Green. Two men were jailed, but was there a cover-up to protect others from being blamed? Show more
Paul Atterbury travels around Britain finding out how the great ocean liners made such a mark on the popular imagination and why they continue to enchant. Show more
Stewart McPherson explores the UK Overseas Territories. He begins on the island of Tristan da Cunha, then visits the Falkland Islands, South Georgia and Antarctica. Show more
How the Wild West Was Won with Ray Mears
Episode 1: Mountains
59 minutes
on BBC FourAvailable for 10 days
How the landscapes of America's three great mountain ranges - the Appalachians, the Rockies and the Sierra Nevada - challenged the westward push of the early pioneers. Show more
Neil Oliver investigates Britain's deadliest rail disaster at Quintinshill near Gretna Green. Two men were jailed, but was there a cover-up to protect others from being blamed? Show more
Michael Mosley investigates Porton Down, Britain's most secretive and controversial military research base. He comes face to face with chemical and biological weapons old and new. Show more
