Which are the top American cities today, how do they rank on a global scale, and what will they be like tomorrow? The answers to these questions can vary from one study to another, depending on the type of data being used. We looked at five...

Disruptive innovations in the business world help create new markets or alter existing markets. Such innovations sometimes lead to old-guard companies being supplanted by new competitors. The real estate industry is no stranger to this&mdash...