Can DRC be declared ebola free?

The last ebola patient in the Democratic Republic of the Congo has been released from a treatment centre in Kasai province. Can the country now be declared free of this latest outbreak?What is behind the escalating tensions between Ethiopia and Eritrea over control of the Red Sea?And we hear from the Nigerian scientist, who has been recognised with a global award from the International Institute of Tropical Agriculture, on how her pioneering work is protecting yam and cassava crops and making them more resilient.Presenter: Nyasha Michelle Producers: Mark Wilberforce, Yvette Twagiramariya, Stefania Okereke and Alfonso Daniels Technical Producer: Chris Kouzaris Senior Producer: Patricia Whitehorne Editors: Andre Lombard and Alice Muthengi