Silicon Valley is near Stanford University, for example, and similar high-tech clusters are gathered around MIT near Boston in the United States and around Cambridge University in Britain.

ECONOMIST: Idea: Clustering | The

Sir Michael also says the government will have to reconsider how they can develop start-up businesses around universities, following the pattern of hi-tech industries in the United States growing around Stanford University in California and MIT in the Boston area.

BBC: UK universities 'face online threat'

Jack Levin, a criminology professor at Northeastern University in Boston, acknowledges the success of policing strategies, but notes that an ageing society like the United States should expect to experience less violent crime.

ECONOMIST: The great crime decline continues. No one is sure why