South Africa's Nama people want mines rehabilitated

We look at how decades of diamond mining along South Africa's west coast have affected the environment and why the local Nama community says mining companies such as De Beers and state-owned Alexkor haven't done enough to rehabilitate their land.Also, after Australia banned use of social media for people under the age of 16, we ask whether African countries should come up with such a ban. Presenter : Nkechi Ogbonna Producers: Bella Twine and Carolyne Mwangi Technical Producer: Jonathan Mwangi Senior Producer: Charles Gitonga Editors: Samuel Murunga and Maryam Abdalla