大象传媒

Gnanli Landrou has invented a special powder that can turn mud into a solid building material. It's inspired by houses where he grew up in West Africa. It's far less polluting than concrete - and it's about to be used in a new apartment block.
For more innovative solutions listen to the People Fixing the World podcast
Reporter - Myra Anubi
Producer - Richard Kenny
Camera - Angus MacKenzie