In 1976, David Attenborough embarked on his most ambitious project ever, Life on Earth. No-one had ever attempted a natural history series on this scale before and David’s reputation was on the line. This is the remarkable story behind the BBC’s most famous wildlife blockbuster. A three-year, hair-raising odyssey around the world, travelling to 40 countries and filming over 600 species, including the famous mountain gorillas. Broadcast in 1979 and watched by 500 million people, it launched David Attenborough’s career as the most successful and influential wildlife film maker of our time