It is the first bioavailable strontium isotope map to show predicted strontium isotope ratios across all of Sub-Saharan Africa. Strontium is an element present in bedrock and soil that comes in ...

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 growth of Africa’s urban populations will propel new demand for infrastructure, ...