Yemen’s largest city Sana'a may even supplant Franis Kéré's home country as the world’s leading rammed earth capital, with a host of stunning, UNESCO-protected sites scattered around its Old City area. The material is one of many in an arsenal of alternatives being used to combat high temperatures and reduce global carbon footprints, a scant 5% of which can be attributed to all 54 African nations, as the Pritzker Prize winner pointed out last week in a preview of his own locally-sourced designs for the Triennale di Milano.

Elsewhere in the world, the BBC's Future Planet offers Austrian architect Anna Heringer’s Aga Khan Award-winning METI handmade school design in Bangladesh as a contemporary example of its successful export and application. As she and others pointed out, mud's ability to circumvent the need for more air-conditioning on a warming planet is a huge selling point, along with its proven acoustic qualities, flood resiliency, and ability to absorb moisture and therefore improve indoor air quality. 

"It is a wonderful feeling to touch the earth," Heringer told the outlet, referring to its more tactile qualities. "You don't need any tools to build with it, you just use your hands."