Wealth & Health of Nations

Each bubble is a country · x = GDP per capita (log scale) · y = life expectancy · size = population · click a legend item to isolate a region. Notice how tightly life expectancy tracks income at the low end, then flattens out — past a certain point, more GDP buys progressively less extra longevity.
Bubble area (not radius) scales with population. Color capped to three regions plus "Other" for reliable distinction.

World Population Growth

Midyear estimate, 1950 to present — growth is slowing even as the total keeps climbing

Population by Region Over Time

Stacked by continent — Asia and Africa account for almost all of the growth in this chart