World in Progress: Is there such a thing as 'clean cobalt'?
| 29:59 mins.
Cobalt is one of the most important raw materials used to make batteries for smartphones, tablets and e-cars. About two thirds of cobalt comes from the Democratic Republic of Congo. In addition to the big industrial mines, there are many small makeshift mines where even children source the raw material, risking their lives. Linda Staude went to explore.