1. Dolphin Days
2. Earth and environment

David Attenborough investigates what is happening to our oceans, and whether it is too late to save their remarkable biodiversity. Attenborough travels from the cold waters of the North Atlantic to the tropical waters of the Great Barrier Reef to meet the scientists who are transforming our understanding of this unique habitat.

Investigate the mysteries behind some of Earth's most impressive and puzzling migrations using the latest technologies and field research.

National Geographic crews took dramatic measures over years in the field in pursuit of painstaking shots, including facing sandstorms, swimming with sharks, entering war zones and dangling off cliffs.

High on the list of the most inhospitable places on Earth should be Australia's central desert. Ravaged by countless droughts, it is a cruel and unforgiving place where temperatures soar and trees produce poisonous leaves. Yet, in the midst of this desolate environment, many species of wildlife thrive - in fact more than can be found in the more temperate climes of Europe and North America. From kookaburras and koalas to kangaroos and emus, viewers discover how these tenacious animals have learnt to survive in such harsh conditions.

Throughout his life, American Peter Robbins has cultivated a passion for submarines. As an engineer, he is fascinated by the precision of Germany's U-boat technology. As an entrepreneur, he is intrigued by the prospect of underwater tourism. Underwater Dream Machine follows Peter Robbins as he embarks on a ten-year odyssey to create his own million-dollar underwater vessel from scratch and explore the sunken wrecks of German U-boats.

See behind the scenes of this series, concentrating on how the filmmakers worked together with scientific advisers from practically every field of marine science.

In one of the few times in its 5,000 year history, the oldest, most populous nation on earth has opened its doors to the rest of the world. In today's China, the economics of feudalism and communism are out, while capitalism is in. Old walls are being torn down, and a futuristic landscape of glass and steel is shooting up in their place.

A machine or filtering system which extracts carbon dioxide from the air and stores it underground could be the holy grail of climate science. Although the idea was first proposed in 1999, scientists have so far failed to demonstrate a scrubber technology that's economic, energy-efficient and that won't cost the Earth. Until now.

The World Debate puts the important questions to representatives from global politics, finance, business, the arts, media and other areas. The panels and contributing audiences discuss topical themes.

This refreshingly honest, optimistic and powerful film provides a fascinating insight into what global warming really means for the future of the world and the pioneering developments which might well alter its course.

This episode investigates the global warming 'backlash' - the intense debate about the reality of man-made global warming that raged during the 1990s and into this century.

In the 70s, the world seemed to be falling apart. From acid rain to overpopulation and resource depletion, ecological concerns were big news. And it was at this time that climate change first became a hot political issue.

Tonight, Cathy and Luke get their first taste of the Cape at a house opening ceremony in Aurukun, get their feet wet hunting mudshells in a mosquito-infested swamp, launch a community-built catamaran to explore the wetlands and try not to get burnt to a cinder as they learn how to set fire to country

In tonight's episode Cathy and Luke hunt down sand frogs that drink their own urine and start a fire with nothing but a bit of old wood and some combustible roo poo. Luke puts his new-found confidence to the test on the dance floor and Cathy tries some tongue-twisting rap with the kidz in the hood in Tennant Creek.