For a long time now the options for building have been pretty straight forward - brick, concrete, iron and steel girders, timber and plasterboard stud walls. As time has passed we have witnessed some truly incredible and intelligent uses of the same age old materials. The ones that have most impressed me can be found below. 1. Earth bag construction Earth bags are plastic or canvas sacks that are filled with a mixture of dirt and cement before being stacked to form walls. The bags are held…