with Anthony Smith
A personal journey across four continents to see some of the world's great National Parks.

On the edge of Nairobi there is a remarkable 44 square miles - the Nairobi National Park. It contains lions and rhinos, giraffes and leopards - a piece of primeval Africa just four miles from the city centre.
The pressures on it are great, particularly from tourism, Kenya's biggest money-earner. With 150,000 visitors a year and Nairobi pushing up against the Park's boundaries, how can the animals behave naturally and remain undisturbed?
(From Bristol)