How is Burundi coping with a refugee crisis caused by fighting in eastern DR Congo?

What dangerous substances are being added to the deadly drug Kush?

And why are some people adding detergent to the West African staple food fufu? What are the dangers?

Presenter: Charles Gitonga Producers: Patricia Whitehorne, Yvette Twagiramariya and Stefania Okereke in London with Blessing Aderogba in Lagos. Senior Producer: Paul Bakibinga Technical Producer: Francesca Dunne Editors: Andre Lombard and Alice Muthengi.