National Geographic has just published a swathe of articles and interactive infographics about the world’s population surpassing 7 billion. Amongst these is a striking map of the world combining population density and wealth.
The map overlays one of four different colour filter on each country on top of a global population distribution map to indicate not only where people live but how wealthy, on average they are – in per capita GDP. Although it doesn’t tell the full story – e.g. the huge income variation within countries – the map powerfully demonstrates the massive disparities in wealth around the globe.