Over the past 60 years, urbanisation and cities have fundamentally transformed the social, economic and political geography of West Africa. The number of people living in cities increased from 5 million in 1950 to 133 million in 2010. During the same period, the number of towns and cities with...

Urbanisation in China has long been held back by various restrictions on land and internal migration but has taken off since the 1990s, as these impediments started to be gradually relaxed. People have moved in large numbers to richer cities, where productivity is higher and has increased...

The U.S. population has become increasingly concentrated in large metropolitan areas. However, there are striking differences in between the performances of big cities: some of them have been very successful and have been able to pull away from the rest, while others have stagnated or even...