An aging population is a looming economic and social burden, particularly in Europe and Northeast Asia, and to a lesser extent in the United States.
The global population is graying and growing rapidly. How big -- and how old -- will it be by 2050?
The population growth in the U.S. and around the world from 1950 to 2010 was rapid—the global population nearly tripled. However, the growth from 2010 to 2050 is projected to be significantly slower and is expected to tilt strongly to the oldest age groups.