Gapminder

The Gapminder dataset tracks GDP per capita, life expectancy, and population for countries worldwide over decades. Originally compiled by the Gapminder Foundation — founded by Hans Rosling — it became one of the most iconic datasets in data visualization, famously brought to life in Rosling's TED talks where animated bubble charts revealed surprising global development trends. The data shows how countries move through the wealth-health space over time, challenging common misconceptions about the divide between "developing" and "developed" worlds.