In Mali, residents of Timbuktu take part in the maintenance of the Djingareyber Mosque, a World Heritage Site, applying traditional repair techniques. (Tiecoura Ndaou / UN Photo) Imagine a city…

Sameh Wahba, Barbara Minguez Garcia |

PISA measures the skills and knowledge of 15-year-old students in reading, mathematics and science. Photo: Simone D. McCourtie / World Bank  Investing in people starts by ensuring that graduates…

Christian Bodewig, Lucas Gortazar |