Can a map save lives? Facebook thinks so.
Using satellite photos and artificial intelligence (AI), the company has created a high-resolution map of population density in Africa that it says is more detailed than any of its predecessors.
To create the map, publicly available images were broken up into billions of 30-by-30-metre sections, and each was analysed to assess how many people might live there.
There are more than a billion people across Africa and population densities vary by region and country. The overall figure for the continent is 45 people per square kilometre, and more than 40% of the population is based in urban centres.
That means hundreds of millions of people live in rural, sometimes remote, locations. And in countries like Rwanda, where only a quarter of roads are paved or surfaced, remote can also mean inaccessible or even hidden.
Read full article: World Economic Forum