Geography
Edge Cities: Clustering at Highway Interchanges and Shifting Metropolitan Commutersheds
Quick fact
The term 'edge city' was coined by journalist Joel Garreau in 1991, who identified hundreds in the U.S., often with more office space than downtowns.
Why this is interesting
You might think of the city's downtown as the center of jobs, but many people now commute between suburbs. Why do clusters of offices and shops appear at highway exits far from city centers?