Volcanoes have long helped shape the Earth. But what is less well known is that there are volcanoes on other planets and moons that are even more extraordinary than those on our own home planet. 　　Horizon follows an international team of volcanologists in Iceland as they draw fascinating parallels between the volcanoes on Earth and those elsewhere in the solar system. Through the...

1918. As the Armistice bells rang out across the world to celebrate the end of World War One, a silent killer made its way home with the soldiers - Spanish Flu. 　　This devastating global pandemic infected up to a third of the world’s population and killed more than 50 million people. Now, using compelling eyewitness testimony from doctors, soldiers, civilians and politicians, and...

在本纪录片中，历史学家迈克尔·斯科特利用最新的3D扫描技术和虚拟现实探索现代城市中暗藏的玄机，揭开了三座古代城市尘封的秘密。在开罗，迈克尔探索了在萨卡拉建造的第一座金字塔的内部，挖掘它对吉萨大金字塔有何启发; 在雅典，他揭开了雅典卫城寺庙的秘密，并在地下看到了为世界上第一个民主国家带来财富的银矿；在伊斯坦布尔，他翻开了从希腊人，罗马人到奥斯曼帝国的历史层层，将圣索菲亚大教堂仔细剖析。看不见的城市的扫描团队帮助我们，以前所未有的视角观察古代的建筑，还原了最真实的历史。

A remarkable journey into the secret world of bats. Cutting-edge night-vision cameras follow the hidden life of a greater horseshoe bat roost for four months.