Zimbabwe announces a major shift in its land tenure. Black farmers will get titles for land seized from white farmers but can only sell to "indigenous Zimbabweans"What's behind the rare flooding in the Sahara Desert?And a community in Uganda with an unusually high number of blind people.Presenter: Charles Gitonga Producers: Yvette Twagiramariya, Nyasha Michelle, Rukia Bulle, Bella Hassan and Paul Bakibinga in London. Technical Producer: Francesca Dunne Editors Andre Lombard and Alice Muthengi.