Detroit

http://en.wikipedia.org/wiki/Decline_of_Detroit

http://www.breitbart.com/InstaBlog/2013/02/22/Detroit-Most-Miserable-City-in-the-US

Global Megacities

http://www.businessinsider.com/booming-cities-gdp-population-2011-2#

http://jfdatalinks.blogspot.ca/2013/02/cities-of-australia.html

http://jfdatalinks.blogspot.ca/2013/02/the-most-expensive-cities.html

The Most Expensive Cities

http://www.cnn.com/2013/02/04/travel/cost-of-living-2013/index.html?iid=article_sidebar

http://money.ca.msn.com/investing/canadian-business/south-korea-is-headed-for-big-trouble-its-only-hope-is-immigration

http://jfdatalinks.blogspot.ca/2013/01/greatest-cities-in-human-history.html