It's one of the biggest challenges facing education systems worldwide: gender inequality. Though improvements have closed or even reversed gender gaps in schools in recent years, there's still significant room for progress, especially in sub-Saharan Africa. According to UNESCO, more than half of all girls out of primary and secondary school are on the African continent.

The sites at Nyamata, Murambi, Gisozi and Bisesero in Rwanda commemorating the mass killings of mainly Tutsi victims were “just inscribed on the UNESCO World Heritage list”, the organisation posted on social media on Wednesday.