Tavs Jorgensen, a researcher at the University of the West of England, has pioneered a method for extruding cob into brick shapes, making this ancient, sustainable building material more adaptable to modern construction. Using 3D-printed molds, Jorgensen developed cob bricks with interlocking shapes that eliminate the need for mortar, a significant step toward low-carbon, waste-free building. These cob bricks, made from earth and straw, are not fired, allowing complete material circularity. The project highlights the potential for cob to be scaled up in construction, offering a greener, more efficient alternative for the building industry.