An extensive earthen wall is being built around the besieged Sudanese city of el-Fasher. Researchers from Yale University say it is intended to trap people inside.
Why is there a rapidly growing demand for solar panels in Africa?
And we meet Iris- the teaching robot in South Africa.
Presenter: Audrey Brown
Producers: Charles Gitonga in Nairobi, Mark Wilberforce, Yvette Twagiramariya and Sunita Nahar in London.
Senior Producer: Paul Bakibinga
Technical Producer: Jonathan Greer
Editors: Maryam Abdalla, Andre Lombard and Alice Muthengi
