(March 2012) "Distilled Demographics," PRB's video series, highlights key demographic concepts such as fertility, mortality, and migration. Through these short videos, you can learn demography's real-world application and impact. "These videos not only show that demography can be exciting, but also highlight how population trends and issues affects the well-being of us all," says Carl Haub, senior demographer at PRB. "Fertility, mortality, and migration—along with other demographic issues—play a major role in determining what kind of opportunities and challenges people face in their communities and countries."

A few years ago, it was announced that half the world's population now lives in urban areas. When we think of urbanization, we tend to think of sprawling cities with skyscrapers. However, the definition of "urban" varies greatly from country to country. In this video, PRB senior demographer Carl Haub discusses the global diversity of "urban" areas and the implications of a more urban world.

We want to hear from you! Have a question on world population and demography? Send in your question to us at askprb@prb.org

PRB's Distilled Demographics video series is underwritten through the generosity of Juanita Tamayo Lott and Robert H. Lott in support of PRB's Millennial Generation Outreach Program, and in memory of Jorge del Pinal.