Nature

Earth may seem like the most hospitable planet in the solar system. But look again. Startling new discoveries reveal the blue planet has been plagued by more chaos and destruction than scientists once imagined. Stand on the Earth billions of years ago as a primitive planet called Theia slams into it. Shiver as our entire globe is frozen over like a gigantic snowball. Feel the heat as mammoth volcanoes scorch the landscape and darken the sky. From a cosmic gamma ray burst frying away the ozone layer to an Everest-size asteroid slamming into the ocean, we'll reveal new information about how these unparalleled events drove life to the brink of total extinction. Out of this continuous devastation, how has our planet--and life--got to where it is today? Are the worst days behind us--or lurking in the distant future?

On a vast plateau cradled in the heart of the rocky mountain range lies two million acres of unspoiled wilderness, never farmed and never fenced. Canyons, lakes, rivers and mountains, a refuge for magnificent animals and a spiritual sanctuary for generations of Americans, all resting on the largest super volcano in North America. This is Yellowstone, America's first national park, a raw and powerful beauty that truly comes to life through immersive 3D.

Africa's wildest river is home to the most spectacular wildlife. Hippos fight for territory while herds of elephant, water buffalo and zebra depend on it for life. In the wet season the rains burst the riverbanks and everyone, including people, must move whilst fish swim through the villages. In the dry season the creatures fight over the few pools of water while predators prowl. At its heart it plunges over Victoria Falls and into wild ravines before draining into the Indian Ocean, where storm clouds cycle the water back into the heart of Africa.

Thanks to a recent remarkable discovery in the BBC's Film Vaults, the best of David Attenborough's early Zoo Quest adventures can now be seen as never before - in colour - and with it the remarkable story of how this pioneering television series was made. First broadcast in December 1954, Zoo Quest was one of the most popular television series of its time and launched the career of the young David Attenborough as a wildlife presenter. Zoo Quest completely changed how viewers saw the world - revealing wildlife and tribal communities that had never been filmed or even seen before.
Broadcast ten years before colour television was seen in the UK, Zoo Quest was thought to have been filmed in black and white. Until now. Using this extraordinary new-found colour film, together with new behind the scenes stories from David Attenborough and cameraman Charles Lagus, this 90 minute special showcases the very best of Zoo Quest to West Africa, Zoo Quest to Guiana and Zoo Quest for a Dragon in stunning HD colour for the very first time.