Humans are the only animals that have adapted to life in every habitat on Earth. From oceans to jungles, from the Poles to the deserts, Human Planet has explored man's unique ability to survive in the most extreme environments. In the final episode, the focus is on the habitat we have made for ourselves - the city. More than half of the world's human population now lives in cities and people seem more removed from nature than ever before. But nature is resilient and claws its way into towns and cities in all sorts of ways. In Dubai, the ancient art of falconry has offered a solution to a 21st-century problem, while in Colorado's Estes Park, the police deal with an invasion of giant elk. Raiding monkeys cause trouble for an Indian fruit seller in Jaipur, and a mother has unwelcome guests in her London home.