The latest national and international news, exploring the day's events from a global perspective.
Michael Portillo tours Chester's Roman remains, discovers a secret World War II chemical weapons plant at Rhydmwyn and goes mussel fishing on the Conwy estuary. Show more
Documentary focusing on the intelligence of whales and dolphins. Professor Denise Herzing attempts to find out how close their minds are to those of humans. Show more
Historical documentary series. Dr Thomas Asbridge examines the two figures who have come to embody Crusader war: Richard the Lionheart and Saladin. Show more
Space scientist and lunar fanatic Dr Maggie Aderin-Pocock explores people's intimate relationship with the Moon, a familiar presence in the sky that most take for granted. Show more
Hidden Histories: Britain's Oldest Family Businesses
Episode 2: Toye the Medal Maker
1 hour on BBC Four HD
Series following long-running family businesses. Fiona Toye married into a family that has been making medals and regalia, including OBEs, for generations. Show more
A look back at the bank holiday 'battles of the beaches', when hundreds of mods and rockers flocked to seaside resorts on scooters and motorbikes in search of thrills and spills. Show more
Documentary focusing on the intelligence of whales and dolphins. Professor Denise Herzing attempts to find out how close their minds are to those of humans. Show more
Space scientist and lunar fanatic Dr Maggie Aderin-Pocock explores people's intimate relationship with the Moon, a familiar presence in the sky that most take for granted. Show more
Historical documentary series. Dr Thomas Asbridge examines the two figures who have come to embody Crusader war: Richard the Lionheart and Saladin. Show more