The fall of Kwame Nkrumah

An eyewitness account of the overthrow of Ghana's famous independence leader. And we examine Nkrumah's legacy with Prof. Gareth Austin from Cambridge University. Plus the story of a heroic African WW2 airman, the scientists who alerted the world to the threat of acid rain, a Nobel Peace Prize winner on the 1990s campaign to ban landmines and an inside account of Ireland's financial crisis. Photo: Kwame Nkrumah c 1955 (Getty Images)