The Andes is one of the world's most spectacular mountain ranges with one of the richest environments on Earth and a diverse and unique mix of plants and animals existing nowhere else in the world.

Andes: The Dragon's Back so named because of the spines along its ridge travels through this range of mountains stretching from Cape Horn to the Equator, uncovering the largest ice field outside the poles, the Torres del Paine mountain region and the Atacama desert.

The Andes is a perfect example of animals adapting to their environment, penguins manage to thrive in the desert, flamingos cluster around hot geysers and the spectacled bear which originated in North America subsists on South American flowers which now grow in the Andes.

Take a tour of the world's longest and most geologically active mountain range in Andes: The Dragon's Back

Documentary charting the struggle for survival facing Antarctica's penguins. While some rely on thick down coats and fat reserves, others migrate north for the winter or stay on volcano-heated islands. However, the endearing animals' ability to defy the odds is about to be put to the ultimate test as the climate begins to change.

Documentary following a loggerhead turtle as she journeys across the Pacific.

On the way she meets dolphins and whales, sharks and giant squids, typhoons and fishermen. She swims over deep canyons, and uses underwater mountaintops like motorway service stations. Blue whales thunder by like juggernauts, and sharks dance a beautiful midnight ballet around her. Pacific means peaceful, but it is clearly not. One minute she is under fire from marlin, the next swimming over a coral reef, with crocodiles as well as sharks.

David Attenborough's entertaining romp through the world of monkeys has a serious side: for when we look at monkeys we can see ourselves. From memory to morality, from 'crying wolf' to politics, monkeys are our basic blueprint.

Pygmy marmosets 'farm' tree sap; bearded capuchins in Brazil develop a production line for extracting palm nuts; white-faced capuchins in Costa Rica tenderly nurse the victims of battle; and in the Ethiopian highlands a deposed gelada baboon has got the blues.

This moving film reveals the differing fortunes of a mother polar bear and a mother grizzly bear, and their new-born cubs, in a rapidly-changing world. The shrinking Arctic ice may be making life much tougher for polar bears, but it is offering new opportunities for grizzly bears to the south. Where once the lives of white and brown bears could not have been more different, in summer-time they now meet along shores and islands almost all the way to the North Pole. Amazingly they have even interbred. It Is a remarkable story of how bears, ever intelligent and resourceful, are adapting to a warming world.

Natural World investigates the vital bond between animal mothers and their babies. The more we study animals, the more we realise just how emotional they are; all mothers are faced with tough choices as they struggle to bring up babies in a difficult and dangerous world, constantly balancing their own needs with those of their infants. Yet there are many ways to raise your brood, from the fish who looks after her young in her mouth to the extended childhoods of gorillas or orang-utans.

Jonathan Scott narrates the extraordinary story of the leopard - the one big cat that still survives across half the world while tigers, cheetahs and lions are all struggling. By following the lives of leopard mothers and their cubs in East Africa the film investigates what it is about the natural history of these cats that makes them born survivors. Perhaps the most extraordinary revelation is that leopards are living undercover on farms and even in cities across Africa and Asia.

The Himalayas look beautiful and lifeless, unable to give anything, not even enough air. Yet this powerful film reveals the Himalayas provide many gifts - water and food for animals, and for people too, rice and religion, or pets and perfumes.

Sir David Attenborough tells the stories of the world's best animal architects. There are house-proud bower birds, who only find a mate if they decorate their homes perfectly. There are hornets, who build electric central-heating systems, and the star-nosed mole whose house is so well designed that his favourite meal of worms literally drop in for dinner. From larders to nurseries and from high-rises to subway systems, Attenborough shows that the animal architects have designed it way before we humans.

David Attenborough narrates the charming and fascinating story of some real-life animal romantics. There are show-offs and singers, dancers and fighters, stories of undercover affairs and heart-warming devotion. These include a male polar bear that plays hard to get, a lemur whose odour bags him a mate and a lizard who is tender and faithful to the very end. It reveals that animals can be loving, complex, funny and inventive - it is all part of the mating game.