Americans define themselves in the superlative: we are the biggest, strongest, fastest country in the world. They reward above all else: winning – at sport, at business and at war. Metaphorically is a nation on steroids. Is it any wonder that so many of their heroes are on performance enhancing drugs? A film that unflinchingly explores our win-at-all-cost culture. Bigger, Stronger, Faster is a first-person narrative, including US Congressmen, professional athletes, medical experts and everyday gym rats. When you discover that your heroes have all broken the rules, do you follow the rules, or do you follow your heroes?

Widespread immigration to the U.S. from Latin countries begins – first with a small group from Cuba, then a larger one from Mexico. Both flee chaos and violence in their home country and are attracted by opportunities in the United States. In 1898, the U.S. helps liberate Cuba and Puerto Rico from Spain but then seizes Puerto Rico as its colony. The first Puerto Rican arrivals (now U.S. citizens) establish a network in New York.

Snowboarding as you've never seen it, unless you are one of the handful of daredevils willing to risk life and limb for the glory revealed here. Jaw dropping footage with a pulse-pounding soundtrack, shot in some of the most rugged, remote and beautiful snow country on the planet. "The Art of Flight" gives iconic snowboarder Travis Rice and friends the opportunity to redefine what is possible in the mountains. Experience the highs, as new tricks are landed and new zones opened, alongside the lows, where avalanches, accidents, and wrong-turns strike. Directed by Curt Morgan ad converted by Venture 3D, one of Hollywood's leading 3D conversion companies, the feature combines meaningful storytelling and sport progressing action with some of the most captivating 3D visuals to date. The film was shot using state of the art equipment and technologies, much of which was custom designed for this project. The film transcends snowboarding with an inspirational message about adventure and exploration.

Andrew Graham-Dixon begins his exploration of German art by looking at the rich and often neglected art of the German middle ages and Renaissance. He visits the towering cathedral of Cologne, a place which encapsulates the varied and often contradictory character of German art. In Munch he gets to grips with the earliest paintings of the Northern Renaissance, the woodcuts of Albrecht Durer and the cosmic visions of the painter Albrecht Altdorfer. Andrew also embarks on a tour of the Bavarian countryside, discovering some of the little-known treasures of German limewood sculpture.

The series concludes by delving into the world of satirical maps. How did maps take on a new form, not as geographical tools, but as devices for humour, satire or storytelling? Graphic Artist Fred Rose perfectly captured the public mood in 1880 with his General Election maps featuring Gladstone and Disraeli, using the maps to comment upon crucial election issues still familiar to us today. Technology was on the satirist's side with the advent of high-speed printing allowing for larger runs at lower cost. In 1877, when Rose produced his 'Serio Comic Map of Europe at War', maps began to take on a new direction and form, reflecting a changing world. Rose's map exploited these possibilities to the full using a combination of creatures and human figures to represent each European nation. The personification of Russia as a grotesque-looking octopus, extending its tentacles around the surrounding nations, perfectly symbolised the threat the country posed to its neighbours.

Hundreds of years ago in faraway Iceland the Vikings began to write down dozens of stories called sagas - sweeping narratives based on real people and real events. But as Oxford University's Janina Ramirez discovers, these sagas are not just great works of art, they are also priceless historical documents which bring to life the Viking world. Dr Ramirez travels across glaciers and through the lava fields of Iceland to the far north west of the country to find out about one of the most compelling of these stories - the Laxdaela Saga.