Urban areas are now home to more than half the population of OECD countries. Megacities like Tokyo with more than 35 million people and Mexico with about 18.5 million, and large agglomerations such as Montreal, Helsinki, Madrid and Stockholm are often called "engines of national growth." They...

This note is an update of the earlier versions released on 27 March and 13 May. It provides analysis on issues related to the economic, social and environmental impacts, lessons learned in terms of digitalisation, mobility, density, urban design and collaborative governance, and action-oriented...

Urban areas represent an important part of the national economy and feature higher GDP per capita and productivity levels than their country’s average. But they also harbour large pockets of unemployment and poverty and suffer from problems such as congestion, pollution and crime. This book...