In the high-stakes game of big-wall climbing, the Shark’s Fin on Mount Meru may be the ultimate prize. Sitting at the headwaters of the sacred Ganges River in Northern India, the Shark’s Fin has seen more failed attempts by elite climbing teams over the past 30 years than any other ascent in the Himalayas. To undertake Meru, says Jon Krakauer, the bestselling author of Into Thin Air, "You can’t just be a good ice climber. You can’t just be good at altitude. You can’t just be a good rock climber. It’s defeated so many good climbers and maybe will defeat everybody for all time. Meru isn’t Everest. On Everest you can hire Sherpas to take most of the risks. This is a whole different kind of climbing."

The photographer of the second episode of the series is Richard I'Anson, who documents a fire rite, attempts to photograph the elusive Himalayan snow leopard and captures the colorful Festival of Holi.

In this bird's-eye view of two continents, demoiselle cranes negotiate a dangerous Himalayan pass on their way to India while high-flying bar-headed geese take the fast track five miles above. In Rajasthan, vultures watch hunting tigers hoping for a meal and pigeons visit a temple dedicated solely to sacred rats. Pigeons are also our guide to the greatest gatherings of camels on Earth and learn to dodge buzzards around the battlements of Jodhpur Fort. 9,000 cranes overwinter in the most unlikely of spots - a barbed wire compound in the centre of a desert town. In Australia, rainbow lorikeets drop in on Sydney and patrol Australia's Gold Coast. In the outback, white cockatoos swirl in thousands and budgerigars pass Uluru (Ayers Rock) and gather in the biggest flocks ever recorded. In China, swallows and swifts visit the Great Wall and the Forbidden City of Beijing. In Japan, the country's most revered birds - Japanese cranes are fed fish by appreciative locals and are joined in strange, momentary harmony by hungry red foxes, white-tailed eagles and Steller's eagles. As peace descends, Japanese cranes dance beautifully in the snow.

The seventh episode of the series takes us on an epic journey to discover the extraordinary dynasty of mammals. From their humble origins in the Jurassic forests to their dominance in the modern world, mammals have evolved and survived through cataclysmic events and drastic environmental changes. From the small coati in the jungle to the majestic Megacerops, passing through the elusive snow leopard in the Himalayas and the gigantic marine mammals like whales, the documentary illustrates the adaptability and diversity of these incredible beings.
With stunning images and masterful narration, the documentary is a window to the resilience and beauty of life on Earth, celebrating the tenacity and ingenuity of mammals throughout the ages.