The latest national and international news, exploring the day's events from a global perspective.
Michael Portillo's journey continues in a military vein, as he views the Duke of Wellington's funeral carriage and visits the army camp at Aldershot. Show more
Kate Adie tells the story of the women and men who produced the millions of shells used in trench warfare and the dangers in the factories where they worked. Show more
Series which uncovers the story behind the creation of six classic books. Simon Russell Beale looks at what we can learn from Shakespeare's First Folio. Show more
Professor Bruce Denardo attempts to prove if there is any truth behind the legend of the Bermuda Triangle, where many ships and planes have disappeared in mysterious circumstances. Show more
Secret Knowledge
The Russian Revolutionary: Zaha Hadid on Kazimir Malevich
29 minutes on BBC Four HD
Available for years
Architect Zaha Hadid considers the influence of Russian abstract artist Kazimir Malevich's avant-garde art on her own avant-garde architecture. Show more
Mark Rothko believed that tradition was all used up, that figurative art could no longer connect us, viscerally, to the human tragedy. So he set himself - and New York - a test. Show more
Rivers provide food and water, but they can also flood or freeze. Human Planet meets people for whom rivers can be both a risk to life and a lifeline. Show more
A look at the social and economic changes which took place during Queen Victoria's reign, such as industrialisation and changing roles for women. Show more
Kate Adie tells the story of the women and men who produced the millions of shells used in trench warfare and the dangers in the factories where they worked. Show more
Series which uncovers the story behind the creation of six classic books. Simon Russell Beale looks at what we can learn from Shakespeare's First Folio. Show more
Secret Knowledge
The Russian Revolutionary: Zaha Hadid on Kazimir Malevich
29 minutes on BBC Four HD
Available for years
Architect Zaha Hadid considers the influence of Russian abstract artist Kazimir Malevich's avant-garde art on her own avant-garde architecture. Show more
Professor Bruce Denardo attempts to prove if there is any truth behind the legend of the Bermuda Triangle, where many ships and planes have disappeared in mysterious circumstances. Show more