Sheffield Doc/Fest: Project Nim - 'I've seen it 22 times and I still cry'

Sheffield Doc/Fest: Project Nim - 'I've seen it 22 times and I still cry'. Project Nim tells the story of a chimpanzee raised like a human child in the 1970s. Catherine Shoard talks to the film's producer, Simon Chinn, and Bob Ingersoll, a former graduate student partly responsible for Nim's care