This weeks episode focuses on two environmental issues, the production of animal feed and also the processing of waste, especially in developing countries.

Mathieu Chaix-Bar is attempting to tackle both these problems with a solution sourced from nature. His company Weendle, which is based in The Netherlands use the larvae of the black soldier fly to break down waste and then once complete the larvae is then used as a protein source in animal feed.

Their work is mainly focussed in sub-Saharan Africa where increasing urban populations and lack of sewerage infrastructure means the problem is huge.