Investigating the role animals play in religion, Henry sees a desert ritual in which spiritual seekers illegally smoke the poisonous skin of a Sonoran toad. And, in the snake-handling churches of Appalachia, he finds even Christianity has room for a surprising role for dangerous animals.

An intrepid crew of scientists and explorers takes the ultimate plunge—scuba-diving beneath the North Pole.

Part 3: Ceremony
Historian Dr Lucy Worsley and antiques expert Mark Hill examine objects that are associated with ceremonies. Lucy traces the history of the wedding dress, while Mark discovers how you put the sparkle into a diamond. They also get their hands on an Olympic medal from 1948 and look at memorabilia from a ceremonial event that Queen Victoria called the 'greatest day in our history'.

Documentary looking at the Secret History of the Mongols, said to have been written by Genghis Khan's adopted son, which reveals a very different man to the brutal butcher of Western legend. Not just a womaniser, but a devoted husband. Not just a warrior, but a politician. Not just a conqueror, but a legislator. A man who wanted the lessons he had learnt - good and bad - to be passed onto his successors. Within its pages lies the inside story of how an illiterate nomad inspired his successors to conquer the largest land empire the world has ever seen.

Naturalist Casey Anderson and cat expert, Tyler Johnerson, set out to track one of North America's most elusive ghosts: the mountain lion. Armed with specialized camera technology, Casey and Tyler hope to document "never before seen" footage of mountain lions living in the Greater Yellowstone Ecosystem. Aided by Tyler's keen hound dogs, the same strategy employed by leading cat researchers, Tyler and Casey get hot on the heels of this formidable and cunning predator – an animal capable of jumping vertically nearly twenty feet in a single leap and taking prey much larger than its distant relation, the bobcat.

Revisiting the murders of serial killer Peter Manuel in Scotland in the late 1950s, and asking whether the state of his mental health should have prevented him from being hanged…

With extraordinary footage from the crime scenes, this documentary focuses on the people who survived Anders Behring Breivik's killing spree on July 22nd, 2011.

From birth to weaning, from territorial disputes to courtship and mating, from brush fires to drought, gum trees are what determine a koala's success or failure, survival or mortality. This film will explore the remarkable bond between the koala and the eucalypt trees it so depends upon.

Casey Anderson finds himself on “mission impossible” – a quest to film an elusive animal whose legend is almost larger than life, the Wolverine.

Investigating the role animals play in religion, Henry sees a desert ritual in which spiritual seekers illegally smoke the poisonous skin of a Sonoran toad. And, in the snake-handling churches of Appalachia, he finds even Christianity has room for a surprising role for dangerous animals.