Geodesic domes

Geodesic domes can be built easily and cheaply and are the strongest and lightest structure yet conceived. Compared to a rectangular structure of similar size, they have half as much wall-area, which means they lose only half as much heat through the walls. This makes them very energy-efficient.

A geodesic dome is built from a skeleton of triangles, covered with an outer skin. The skeleton could be made of wood, steel or other substances, which could probably be digitally fabbed.

• Free plans for a geodesic dome