The United States of Cities. Source.
The data was compiled during the month of July 2010 from several million commuters who communicated via cell phone; the colored dots represent the commuters’ home locations, while the rings and their intensity represent the number of commuters traveling. The resulting map shows a breaking down of the traditional idea of a nation of states, and, instead, an ever-expanding urban sprawl that pushes the limits of our respective cities. This is a version of America that’s not based upon politics, or history, but one that’s constantly moving.