The transition to a predominantly urban world

This is a series of blogs and interviews, curated by IIED senior fellow David Satterthwaite, that will examine different aspects of global urban change, including analysis of the social, political and environmental factors that cause cities to thrive or decline.

These blogs reflect a planned new edition of Satterthwaite's landmark 2007 working paper, 'The transition to a predominantly urban world and its underpinnings'. The updated edition will be published later this year.

The series will review the whole spectrum of urban centres: from the nine cities with over 20 million inhabitants to the tens of thousands of small urban centres. We expect to have a new blog every two weeks, and different voices will be invited to contribute.