Katty Kay in Washington and Christian Fraser in London report on the events that are shaping our world.
Michael Portillo embarks on a series of journeys through London. He travels on the capital's first underground railway, the Metropolitan Line. Show more
The inside story of the design and construction of 'the most perfect suspension bridge in the world', and how its unique slimline structure arose by accident. Show more
Documentary telling the extraordinary story of Koko, the only 'talking' gorilla in the world, and her lifelong relationship with Penny Patterson, who taught her to communicate. Show more
Documentary telling the story of an extraordinary 1960s experiment in which a scientist and a young woman try to teach a dolphin to speak English in a flooded house. Show more
A Storyville documentary: Following animal rights lawyer Steven Wise's unprecedented challenge to break down the legal wall that separates animals from humans. Show more
The story of Machli, the most famous tiger in the world, a legendary fighter and loving mother of nine cubs - all set in the most stunning Indian scenery. Show more
Michael Mosley uses the BBC archives to chart scientists' progress as they probed the mind of the murderer to try to understand why people kill, and whether it can help prevent it. Show more
The series on the history of 20th-century farming in Britain looks at how Hereford and Aberdeen Angus cattle helped earn Britain a reputation as the stockyard of the world. Show more
