The future of housing raises some serious environmental concerns. Construction has been linked to 39% of global carbon emissions, and the concrete industry alone is responsible for 8% of the world’s greenhouse gases.
Solutions will be especially useful in Africa, because so much building still needs to be done. The continent’s population is projected to grow from around 1.5 billion to an estimated 2.4 billion people by 2050. There’s already a housing backlog of 50 million homes.