As the global economy is slowing down, it’s much harder to climb the economic ladder. Harvard and Stanford economist Raj Chetty found that where you live makes a big difference. To go from the bottom rung to the top tier of the income ladder in most American cities depend on a high amount of diversity/low amount of segregation, family structure and social capital. The short list of upwardly mobile cities are Dubuque in Iowa, San Jose in California and Washington, DC. (forbes.com)