14:15The Invention of ChildhoodThe Disappearance of ChildhoodBBC Radio 4 Extra Duration: 15 minutes Wed 20th Jul 2016, 14:15 on BBC Radio 4 ExtraMichael Morpurgo examines how the media and marketing have encroached on the lives of children.GenresFactualHistorySeriesThe Invention of Childhood Source: BBC Online