While genetic tests can reveal the ancestry of enslaved individuals, strontium analysis can now home in on where they actually grew up.

A similar comparison of urban prices — based on data from 125 cities, including nine in Sub-Saharan Africa (the Economist Intelligence Unit’s Worldwide Cost of Living Survey) — finds African cities to ...

Urbanization in African cities is among the fastest globally, particularly in Sub-Saharan Africa, where populations are expected to triple by 2050. As of 2024, Africa's population stands at ...