Five hundred million years ago, our previously eyeless distant ancestral creatures suddenly developed eyes, thereby marking a dramatic leap in evolution. What enabled our ancestors to suddenly evolve with eyes has been a long-unresolved great mystery in the history of our life. Now, scientists are close to cracking the mystery of the amazing story of the birth of our eyes, using cutting-edge DNA research. Travel back to a super realistic prehistoric world recreated by CGI to witness the astonishing story behind the birth of our eyes.
Helen looks at the latest scientific insight into the aurora - dancing lights in the night sky that have fascinated cultures throughout our history. From the networks of cameras now capturing its vast scale, to novel experiments that probe the threat it poses to modern technology, Helen reveals the dramatic transformation in our understanding of the aurora, and the many mysteries that remain to be solved.
While the immense ecosystem of the Kalahari is characterized by its harsh conditions, it also offers a wealth of resources to the native wildlife. From the burrows of nocturnal bat-eared foxes to the massive colonies of harvester ants, the region provides habitats for a vast array of life.
Join Sir David Attenborough in the fifth programme in the series, as he sits beside wild lions in the darkness of the night and meets a Siberian tiger face to face. From the first tree-dwelling hunters through to the modern-day big cats, we follow the true story about cats and dogs to find out what you need to be a true carnivore.
After the murder of one of its own, the Makulu Pack of wild dogs looks to a new leader for salvation; the Western Pride is exiled to the fringes of the kingdom as it fights to protect its cubs; the marauding hyena clan commits the cruelest of acts.
Cheetahs are not your standard big cats, they differ from the others in many ways. First, cheetahs are daytime hunters with eyesight optimized for open landscape and distant prey. Second, They're possibly the fastest land animals that have ever lived.