Nature and EnvironmentEco Africa — The Environment MagazineTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and Environment01/24/2019January 24, 2019On this week's Eco Africa, we follow a team testing crop DNA in Tanzania, discover an old recipe for soap that is making a comeback and see an app that can tell us exactly what is in what we buy.https://p.dw.com/p/3C9CfAdvertisement