Sustainable Architecture Week starts in September! To participate with 188 other countries, type "week1" and we will send you the invitation via Direct Message. Did you know that the construction technique used by the Sumerians over 5,000 years ago is still practiced today in southern Iraq? The so-called *mudhifs* or reed houses are true examples of sustainable architecture. Made with Phragmites australis reeds, these structures are lightweight, easy to repair, and offer excellent thermal insula