S4.E5 ∙ South Africa

The ultimate series about Africa's most mysterious, dangerous and biggest river - the second biggest on Earth. The blood vessel of Africa's dark heart with Forest Elephants, Lowland Gorillas and never filmed underwater beasts.

Featuring groundbreaking new science, experiments and leading scientists from a variety of disciplines, the series unravels the natural history of the body's largest organ.

The evolutionary journey of life on Earth spans millions of years - and the results are as diverse as they are jaw-dropping. Travel through time as we explore the amazing adaptations that help certain species excel within their environments.

Wildlife documentary in which the world's first purpose built waterhole with a built-in specialist camera rig is constructed in the Mwiba Wildlife Reserve in Tanzania to allow filming of the animals that visit it 24/7.

An intimate journey into the lives of a cast of wild animals, through the eyes of the 600-strong team of rangers and others who oversee them.

Two part documentary mini-series about the history of planet Earth before and after the rise of mammals with special focus on German land.