Agglomeration Effects

A study comparing urbanization and per capita GDP between 1980 and 2011 questions common assumptions about the connections between economic growth and cities.
Oct 23, 2014   PLOS ONE
Forget reducing congestion and improving the environment; a new paper makes perhaps the strongest argument yet for investing in public transit based on its ability to agglomerate, or cluster people together, raising wages and productivity.
Aug 14, 2013   The Atlantic Cities
Though China's cities have been growing exponentially, some argue it isn't urbanizing fast enough. Fearing Latin American-style slums, leaders have restricted migration. They're now being urged to ease controls to maximize agglomeration effects.
May 9, 2013   The Wall Street Journal