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David Attenborough sets out on an intrepid quest across seven continents to create a unique television event to celebrate the wealth of natural features that makes Planet Earth so varied, so distinctive and so spectacularly beautiful.

Staring down into the depths of the mighty Zambezi River from atop the world's largest waterfall, the Victoria Falls, world-class divers Orlando Duque and Jonathan Paredes prepare for the most challenging dive of their lives.

Scott and Justin ultimately find themselves in the midst of some of the most wild roads and dangerous animals on the planet. Sleeping in a tree-blind while lions walk directly under them or taking a walking safari is no match to the real situation with the people they meet. The guys experience a way of life that is so drastically different than theirs, impoverished and battling the HIV/AIDS epidemic, the guys witness the joy and sorrow at a small church ceremony and gain a fresh outlook from their new Zambian friends.

In the last episode of Professor Brian Cox's epic journey across the universe, he travels from the fossils of the Burgess Shale to the sands of the oldest desert in the world to show how light holds the key to our understanding of the whole universe, including our own deepest origins. But first we need to understand the peculiar properties of light itself.

Africa is the cradle of humanity, it is land born from violent, cataclysmic events. Even today, it is still possible to find evidence, sometimes in the most unlikely places, of these events which shaped the Africa we know today and which will, in the future, change it once more.

Daredevils: Featuring the Â'train surfer', tight rope walking dog, Moto X on water, Brain freeze, car backflip, the cactus body slam and a skydiver that walks between two planes!

Jungle Jack counts down the amazing rescue stories about six special creatures from around the world.

Africa's landscape is sculpted by some formidable rivers and the Zambezi is one of the continent's mightiest. When the summer rains come to the valley, and fill the pools of the land buffaloes and elephants leave the river, but some animals, like the resident birds and spotted-neck otters, will always rely on this river - one of Africa's mightiest - the Zambezi.