The latest national and international news, exploring the day's events from a global perspective.
The team takes a look at nebulae, vast clouds of dust and gases which play a key role in the birth and death of stars, and therefore in our own origins. Show more
Kate Humble is in the Arctic, where spring arrives with a bang. Helen Czerski chases a tornado to show how the earth's angle of tilt creates the most extreme weather on the planet. Show more
Castles: Britain's Fortified History
Episode 3: Defence of the Realm
59 minutes on BBC Four HD
Available for 11 days
Sam Willis looks at how castles survived into the Tudor era. But these strategic seats of power had to become palaces to impress monarchs such as Elizabeth I. Show more
Comedy set around a dog training class. Things are made even worse for an already-stressed Naomi when her dog goes missing. Nana V helps her track him down and the two women bond. Show more
How a traditional working-class pub game became a national obsession during the 1970s and 80s, and how television played a key role in elevating its players into household names. Show more
Jim Al-Khalili investigates the most accurate, yet perplexing, scientific theory ever - quantum physics. He finds out whether it might solve biological mysteries. Show more
Documentary which maintains that the real pioneers of space exploration were the Soviet cosmonauts, telling the story of how the Russians led us into the space age. Show more
Musical memories from the BBC archives, featuring performances from Kool and the Gang, The Pointer Sisters, Grace Jones, Cameo and Sade. Show more
The team takes a look at nebulae, vast clouds of dust and gases which play a key role in the birth and death of stars, and therefore in our own origins. Show more
Comedy set around a dog training class. Things are made even worse for an already-stressed Naomi when her dog goes missing. Nana V helps her track him down and the two women bond. Show more
Castles: Britain's Fortified History
Episode 3: Defence of the Realm
59 minutes on BBC Four HD
Available for 11 days
Sam Willis looks at how castles survived into the Tudor era. But these strategic seats of power had to become palaces to impress monarchs such as Elizabeth I. Show more