CONSTRUCTION is booming in Dakar, where unfinished apartment blocks tower over most streets, their exposed concrete bricks a dull uniform grey.
In one site, however, a building stands out – the bricks the workers are laying are made of raw, red earth.
Concrete is inexpensive and used in abundance in Senegal’s capital, but it is poorly suited to the West African heat. On summer days, when temperatures frequently reach 38°C, the buildings become furnaces, cooled only with blasts of air conditioning.
Earth naturally regulates heat and humidity, say the founders of Worofila, an architecture firm specialising in bioclimatic design.
Since 2016, they have been pushing for the material to make a comeback. They say it could reduce pollution from cement factories and electricity production – and keep people…