The evolution of Charles Darwin's world-changing study, On the Origin of Species. Darwin enlists the help of his children in experiments that clarify his own thinking on animal collaboration, variation and natural selection. A new drama by Sarah Woods, recorded on location in Darwin's former home, Down House, Kent, by kind permission of English Heritage.

Darwin....Robert Glenister

Emma.....Clare Corbett

Etty.....Madeleine Grey

Parslow/Hooker.....Clive Hayward

Lenny.....Bertie Cresswell

Horace.....Wilbur Conabeare

Production Co-ordinator.....Eleri Sydney McAuliffe

Sound Designer.....Nigel Lewis

Directed by Emma Harding, BBC Audio Wales