Natural World Special. Leopards are one of India's most powerful predators. Built for strength rather than speed, they hunt in the shadows and ambush their prey. In an ever shrinking world, their lives are colliding with people - attacks are reported regularly and hundreds of these big cats are stoned, trapped or shot. What is it like living with these animals on your doorstep? And for the leopards, what does it take to survive in a world of over a billion people?

In 2013 London Underground is 150 years old. Following on from BBC2's The Tube series, this programme tells the story of the underground through the eyes of the people who work for it. Farringdon station supervisor Iain MacPherson reveals why his station - the original terminus - was constructed in the 1860s, and recalls the dark days of Kings Cross in the 1980s. Piccadilly line driver Dylan Glenister explains why every Edwardian station on his line has its own unique tiling pattern and how, in the 1930's, the construction of new stations expanded the borders of London. With privileged access to disused stations and rare archive footage, this is the tube's hidden history, revealing why it was first built and how it has shaped London ever since.

Mike Fay was on a mission: Find out where people are in Africa, how they're impacting the natural environment, and how they're managing the land. So, with two small planes and a tenacious spirit, the explorer and conservationist took to the skies for a six-month aerial survey of the continent. Join him as he gathers answers to his questions and discovers what Africans can teach the rest of us about living in harmony with wildlife.

Author Simon Cox takes you on a journey to the action sites of Dan Brown's novel and introduces the authors and thinkers that were Brown's inspiration. An EXTRA section delves into a deeper mystery behind The Da Vinci Code.

Professor Alice Roberts journeys 40,000 years back in time on the trail of the great beasts of the Ice Age. Drawing on the latest scientific detective work and a dash of graphic wizardry, Alice brings the Ice Age giants back to life. The Ice Age odyssey begins in the 'land of the sabre-tooth' - North America, a continent that was half covered by ice that was up to two miles thick. Yet this frozen land also boasts the most impressive cast of Ice Age giants in the world.

Purchased by a father and son team, the company is now betting its future on a brand new motorcycle design.

Purchased by a father and son team, the company is now betting its future on a brand new motorcycle design.

Documentary about the making of StarCraft II: Heart of the Swarm that came with the collector's edition of the game.

Human bones found on an idyllic beach in Antigua trigger an investigation by naval historian Dr Sam Willis into one of the darkest chapters of Britain's imperial past. As archaeologists excavate a mass grave of British sailors, Willis explores Antigua's ruins and discovers how the sugar islands of the Caribbean were a kind of hell in the age of Nelson. Sun, sea, war, tropical diseases and poisoned rum.

The world of bugs normally passes beneath our notice, yet shrink yourself to their size, see them in 3D and youРІР‚в„ўll enter a world youРІР‚в„ўd never believe existed. Big Bugs in 3D uses specially developed 3D technology to take the viewer on a global journey, from Mexico and the rainforests of Asia to our own backyards.