Why mix earthworms and cocoa shells?
Earthworms are loved by farmers across the world, because of their ability to rejuvenate the soil.
In Ivory Coast, a microbiologist-turned-entrepreneur has seen an opportunity to make a unique compost using manure, earthworms and the discarded shells from the country's biggest export - cocoa.
Africa Business Report went along to find out more.
24 Mar 2017
- From the section Business