Summary: In an earlier video post from The Economist I introduced the population pyramid, which is a type of graph used by demographers to interpret population characteristics and project how those characteristics will change in the future. Using these pyramid graphs, it's possible to discern whether a given population is growing rapidly, growing slowly, or in decline, and whether the country has undergone a demographic transition. Few graphs are more useful than population pyramids, for they allow policymakers to establish tax structures, based on projections of the number of working-age people who will be able to pay taxes and the number of people who will be dependent on social services. Knowing characteristics of a population is also essential if one hopes to prevent food shortages, avoid ecological threats, and lesson the blow of chronic poverty. This video lesson prepared by Kim Preshoff is a nice primer on reading the graphs, as it compares the population distributions of a number of different countries, including Russia, Nigeria, Rwanda, Canada, Japan, China, and the United States. After watching the video and discussing the potential challenges each country faces, it's useful to ask students to find or create population pyramids for other countries and report on the challenges their chosen country faces based on its population characteristics.
Submitted By: Lester Andrist