The latest national and international news, exploring the day's events from a global perspective.
Pagans and Pilgrims: Britain's Holiest Places
Episode 3: Trees and Mountains
30 minutes on BBC Four HD
Ifor ap Glyn visits trees and mountains as a way of understanding the journey Britain undertook from the old Pagan religion to Christianity. Show more
Documentary series about the intelligence of dolphins and whales. This part looks at how the sea mammals make sounds to catch food, and sing for music's own sake. Show more
Suzy explores the use, abuse and manipulation of music in WWII. From swinging jazz to madcap ballets, both sides used music as a weapon in the battle for civilisation. Show more
Series telling the story of the Vietnam War. Public support for the war declines, and American men of draft age face difficult decisions. Show more
Series telling the story of the Vietnam War. With morale plummeting in Vietnam, President Nixon begins withdrawing American troops. Show more
Dr Jago Cooper journeys through southern Mexico to investigate the rise and fall of America's oldest civilisation, the Olmec, who thrived over 3,000 years ago. Show more
Documentary which explores the British love of fast, daring and sometimes reckless motorbike riding during a period when home-grown machines were the envy of the world. Show more
Documentary series about the intelligence of dolphins and whales. This part looks at how the sea mammals make sounds to catch food, and sing for music's own sake. Show more
Suzy explores the use, abuse and manipulation of music in WWII. From swinging jazz to madcap ballets, both sides used music as a weapon in the battle for civilisation. Show more