(March 2011) "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."

Everyone wants to know what the world's population will be in the future, but how do demographers come up with population projections? It's important to understand the assumptions behind projections—the factors that are considered such as the current birth rate, contraceptive use, education levels, policy and funding, and more. In this video, PRB senior visiting scholar Carl Haub uncovers how demographers estimate what the population of a country or the world will be in the future.

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.