Nigeria's telecoms regulator has approved a tariff hike by operators-customers are groaning. A year after ground-breaking malaria vaccination campaigns were launched in Africa-we assess the progress. And why is Benin granting citizenship to descendants of the victims of the transatlantic slave trade? Presenter: Charles GitongaProducers: Blessing Aderogba. Yvette Twagiramariya and Blessing HassanSenior Producer: Paul BakibingaTechnical Producer: Chris Kouzaris Editors: Andre Lombard and Alice Muthengi