It argued that a laissez-faire, trickledown approach had failed and had only widened economic inequality.

Their eureka moment came when they thought of putting the medical data alongside figures showing the extent of economic inequality within each country.

In fact, the cities that have the most innovative and creative economies often have the worst social and economic inequality.

Here were the origins of international economic inequality.

There is overwhelming evidence of a link between economic inequality and social disadvantage.