there is a sustainable solution to human shelter, based on timeless materials (earth, water, air and fire) and timeless principles (arches, vaults and domes). Every man and woman should be able to build a shelter for his or her family with these universal elements, almost anywhere on the earth – Nader Khalili
Currently it is estimated that one half of the world’s population – approximately three billion people on six continents – lives or works in buildings constructed of earth – Ronald Rael
