My March 2023 white paper, Population: A Tale of Two Worlds, provided a good deal of information on differences in the growth rates of population in mature versus emerging countries, and the likely impact of this divergence on economics and the environment. Visual Capitalist provided this graphic which basically captures my entire paper in a single image:
The horizontal bars show the absolute number of people in each age range for the BRIC countries in black (Brazil, Russia, India, China, and South Africa) versus the G7 countries in blue. (U.S. Europe, Canada, and Japan). First, note that at 3.28 billion, the population of the BRICS is four times that of the G7. Second, the median age of the BRICS is ten years younger than that of the G7. Divining all of the implications of these huge differences is beyond my pay grade, but they raise fascinating questions regarding diplomacy, military and economic power, immigration, and maybe other topics.