The story of the Great War told from a unique new aerial perspective. Featuring two remarkable historical finds, including a piece of archive footage filmed from an airship in summer 1919, capturing the trenches and battlefields in a way that has rarely been seen before. It also features aerial photographs taken by First World War pilots - developed for the first time in over ninety years - that show not only the devastation inflicted during the fighting, but also quirks and human stories visible only from above.

On the eve of the German federal elections, Andrew Marr looks at the enigmatic Chancellor of Germany, Angela Merkel. She is the most important politician in Europe and the most powerful woman in the world. Yet she has been criticized by some for her lack of charisma and accused by others of trying to turn Europe into a Greater Germany. Andrew Marr delves into her childhood and background to discover what has shaped her political vision and style. Growing up in East Germany, the paranoid state at the heart of the Communist Eastern Bloc, then becoming a research scientist, she only entered politics in her mid-thirties after the fall of the Berlin Wall. Her political journey has been marked by caution and compromise - but with occasional flashes of ruthlessness and an unyielding commitment to European Union. In this film, Andrew Marr lifts the veil on a very unusual politician.

上个世纪，地震造成的死亡人数超过100万，但是预测本世纪可能会达到10倍。然而，当发生地震时，人们总是感到吃惊。 那么，为什么还没有制定出如何科学预测下一个大地震会发生的时间和地点？这是这个记录片所要试图了解的这个神秘力量的本质。 对我国四川省2008年5月的大地震之旅，以及臭名昭著的加利福尼亚州圣安德列斯断层，为什么科学迄今未能回答这一根本问题。

Horizon looks at dark energy - the mysterious force that is unexpectedly causing the universe's expansion to speed up. The effects of dark energy were discovered in 1998 but physicists still don't know what it is. Worse, its very existence calls into question Albert Einstein's general theory of relativity - the cornerstone of modern physics. The hunt for the identity of dark energy is on. Experiments on earth and in space generate data that might provide a clue, but there are also hopes that another Einstein might emerge - someone who can write a new theory explaining the mystery of the dark energy.