Tony Robinson researches jobs from the Georgian period (1714-1837).

Mongolia, 25 million years B.C. This episode follows a young Indricotherium. After a dramatic birth, he must survive in a world of rhino-sized predators like Hyaenodon and pig-like monsters such as Entelodon.

Although the twentieth century transformed Europe faster then previous history, the new century is bound to be even more radical in the rapport between man and wildlife. Some species adapt remarkably, even thrive under urbanization, landscaping, waste dumps etcetera. Many European authorities are starting to see the light and reverse disastrous 'management'. The greatest challenge probably comes from climate change, a timeless phenomenon, but the greenhouse effect means an unprecedented, fast edition.

Ruth, Peter and Tom look at the ingenious features medieval castle-builders came up with to withstand attack from an ever more formidable array of siege engines.