E-waste pileup, compostable packaging & a green refugee camp

This week on Living Planet, we hear how refugees in Cameroon are creating shade and fresher air, as they connect their tree-planting project to the Great Green Wall of Africa. We also unpack Uganda's electronic waste problem, which has been made worse by a flood of cheap, counterfeit mobile phones on the market. And we learn about the promise and drawbacks of compostable packaging.