Well, New York is a special case in that its climate is within a certain &quot;sweet spot&quot; (warm but not hot in the summer, not too far below freezing in the winter) and the fact that its emergence as a major financial center is a historical relic of the fact that it has been the &quot;gateway to America&quot; for over 150 years.<p>Buffalo and Pittsburgh are experiencing a resurgence only because when you fall as far as those cities have, there has to be a bottom somewhere. But residents of places like that are looking at a lot of problems in the future: they have less than half the population they did 50 years ago, so there is a lot of urban blight (and the other problems that come along with it) to clean up and a very small tax base to pay for it. So while they may see a resurgence, they&#x27;re still not out of the woods yet.