One of the key benefits of cities is that they allow the exchange of knowledge and information between economic actors. This may have two effects: it may create the conditions for entirely new innovations to emerge; and, it may allow firms to learn innovations from those nearby. Yet few studies...

There are many reasons why cities with diverse populations may grow faster. Ethnic diversity might attract human capital, tourists or firms, increase productivity through diverse approaches to problem-solving or ethnic minority entrepreneurship. Yet there are also reasons to believe that...