As Facebook explains in a post about its methodology, one census population zone in Africa, for instance ... Facebook has prototyped detailed population maps for 22 different countries as ...

Quantitative maps of groundwater resources in Africa 2. The published version of the paper 'Quantitative maps of groundwater resources in Africa' (A M MacDonald et al 2012 Environ. Res.

The tide is slowly turning in southeastern Africa — which encompasses countries ... A first-of-its-kind new map may help increase the precision of the HIV/AIDS response as some data-savvy ...

Piri Reis, an Ottoman admiral and cartographer, is renowned for his world map created in 1513, which includes detailed ...