In an interesting Ted talk by Hans Rosling, a Swedish medical doctor and statistician, Rosling observes and analyzes the family size, life expectancy, and the separation between first world countries and the developing world—starting from 1962.  Initial observation of the data captured by the United Nations showed how first world families tended to have longer lives with smaller families, whereas developing countries had relatively shorter lives with a larger family. As Rosling ascends through the years into 2003, the developing countries race to close the gap between the two worlds—becoming almost unified with the first world countries in family size and life expectancy. The data analysis ultimately shows a tight relationship connecting the rise in global health and the change in societal and economic values within a country. Watch the video here.