This chart, showing population growth in almost 600 cities worldwide, is basically too complicated to understand with the naked eye. You’ll want to click through to the original, which allows you to ...

Every year, the U.S. Census Bureau publishes data on the age and race of the country’s residents, an important view into how the population is changing over time. The newest data, which was just ...

The transformation playing out across Texas isn't hypothetical. Decades of population data show how quickly the state's ...