Eco-dome: energy-efficient home designs which are concrete-free

The Eco-dome concept revolves around zero-concrete houses made up of sacks of earth arranged in concentric circles. Photo: AFP

Dome-shaped earth-based constructions in Morocco use unique methods that don't harm local resources and prove resilient in the face of earthquakes and strong winds. Plus they're economical and ecological.

Traditional construction methods combined with modern techniques are the key to building low-tech, less expensive homes, which generate much less greenhouse gas than concrete houses.