in terms of income status, the past four decades have been very good to people working in financial and natural-resources industries or as executives and managers, but not so good for sales workers or people in blue-collar manufacturing jobs.
Most of the biggest inflation-adjusted wage gains have occurred in metro areas that have directly benefited from the boom in U.S. oil and gas production
With so much new infrastructure, 62% of urban areas in China with populations over 100,000 have become less crowded — even as most gained in total population.