Clustering Effect - Economic Geography Matters

Evidence of Clustering – Interesting Graphics

http://www.theatlanticcities.com/jobs-and-economy/2014/03/dozen-regional-powerhouses-driving-us-economy/8575/

http://www.theatlanticcities.com/jobs-and-economy/2014/02/where-good-and-bad-jobs-will-be-10-years-now/8470/

http://www.theatlanticcities.com/neighborhoods/2014/04/us-cities-where-college-grads-are-most-segregated-everyone-else/8803/