In the townships of South Africa, more than 2 million people live in one-room shanties made of scrap wood and sheet metal.Adequate housing or the lack of it is a critical issue in South Africa. But an architect and a builder have come up with an innovative solution.They are constructing affordable homes out of sand. Ten families are moving out of their shanties; they are part of a small public housing experiment in Capetown.

how does it make it smart and sustainable. In which ways could it be improved? Is the building more smart than sustainable or vice versa? EXPLAIN