Victoria Coren Mitchell hosts the quiz where knowledge only takes you so far. Two teams of round-three losers compete for a place in the semi-finals. Show more

It is the first of the semi-finals, when one team find out if they have made it to the grand final of the quiz for students. Jeremy Paxman asks the questions.

Documentary. In a daring mission, Dr Julian Fennessy and a determined Ugandan team plan to round up 20 giraffes to take across the Nile River and beyond to safety. Show more

Documentary about the sinking of the Britannic during the First World War, examining how she ultimately came to suffer the same fate as her sister ship, the Titanic. Show more

Professor Jeremy Black explains the unique economic, social and political factors that helped Britain transform itself almost entirely by the 19th century. Show more

Sean Curran talks to former first minister of Scotland and SNP leader Alex Salmond about his life and political career.

Documentary looking at how a loophole in an obscure piece of gambling legislation led to nearly a quarter of Britain's population playing high street bingo in the 1960s. Show more

Insects are the most diverse group of animals in the world, what is the secret of their success? Steve takes us to the Swiss Alps, where a relationship exists between the ant, wasp and the butterfly. Show more

Suzy Klein examines how the music of the 19th century was able to flourish through economic and social change, as well as a technological revolution. Show more

Documentary about the sinking of the Britannic during the First World War, examining how she ultimately came to suffer the same fate as her sister ship, the Titanic. Show more