HARDtalk - Professor John Beddington, Chief Scientific Adviser to the UK Government

Stephen Sackur talks to Professor John Beddington, the Chief Scientific Officer of the UK government. To what extent are governments ready to be guided by scientific advice? From climate change to food production and public health, the challenges are enormous. So, it sometimes seems, is the gulf between what the scientists recommend and what the political process delivers. John Beddington offers advice, but do the politicians take it?