Katty Kay in Washington and Christian Fraser in London return to report on the events that are shaping the world.

A festive edition of the quiz. In the last first-round match, alumni from the University of Bristol take on a team from Nottingham University. Show more

Drama-documentary series. Newly discovered documents reveal a remarkable web of misunderstandings that stopped the Spanish from invading. Show more

Series in which Sam Willis reveals stories of invasion in Britain. He discovers the French plans to invade Britain by balloon and the subterranean fortress built for troops. Show more

Engineer Rob Bell explores the new inventions - from giant troop-carrying gliders to tanks that could operate on water - that made the Normandy invasion in 1944 possible. Show more

The view from the driving seat as Flying Scotsman travels the Severn Valley Railway. Cab cameras and microphones capture all the action. Show more

Andrew Martin takes three railway journeys following the routes of three of the most famous named trains - the Flying Scotsman, the Cornish Riviera Express and the Brighton Belle. Show more

In the deserts of northern Mexico life, prairie dogs, pygmy owls and rare aplomado falcons, have found clever ways to survive against the odds. Show more

Helen Rosslyn reveals the influence of the 17th-century British pioneer collectors such as Thomas Howard and how the Whitehall Group brought a taste for the Baroque. Show more

William Burrell made a fortune out of shipping and spent it on art. Kirsty Wark tells the story of the self-effacing collector and tours the highlights of his collection. Show more