uh oh. saw this on forbes.com today....."ghost cities of 2100."

"...In response, the German government sponsored the Shrinking Cities Project to study what is now a global phenomenon. The project has an exhibit on tour that examines shrinkage in Russia's Ivanovo, Leipzig in Germany, Manchester and Liverpool in Britain and Detroit in the U.S.

Whether these cities disappear entirely, of course, is an open question. Detroit's population has fallen by around a third since 1950 and now equals about 950,000. It is expected to shrink slowly but steadily until at least 2030; unemployment inside the city is more than 10%. (The suburbs around Detroit, meanwhile, are growing.) If trends hold, Detroit will be altered beyond recognition by 2100..."