Teach yourself how to build a plastic bottle house with cob and transform trash into a home. I build houses out of trash. I was inspired by the life of Kenyan Nobel laureate Wangarĩ Maathai, who said, ...

Despite its huge environmental benefits, cob is an extremely niche construction material. As part of our Building with Cob series, architecture editor Lizzie Crook explores what it would take to ...