Stat: By midcentury, there will be 2 billion elderly people in the world—and 2 billion young

Story: For the first time there will be as many of each group —and together they'll account for more than 40 percent of the world's population. This will have deep implications for the labor supply, family structures and finances, demands on health and welfare services, housing, and more. In this episode, we hear a rebroadcast of a Pew event in London: "How Today's Generations Are Changing the World."