Walking with Dinosaurs, which must have surprised even its makers by reaching the viewing figures usually reserved for royal weddings, was the undoubted television event of 1999. (The companion book and soundtrack album became bestsellers, too.) Extending the computer animation techniques developed for Jurassic Park (1993) these six 30-minute programmes, narrated by Kenneth Branagh, became the first blockbuster special-effects documentary. Here was natural history with a difference, recreating "the lost world" of the Cretaceous and Mesozoic with modern technology, the remarkable visuals enabling the programme-makers to show what life may have been like during the estimated 160 million years "when dinosaurs ruled the Earth".
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