Developed by students from the University of Cape Town, these new bio-bricks are made entirely of human urine. When developing the new bio-bricks student's gathered materials from specially designed male urinals, before mixing the liquid with sand and bacteria. These bricks were designed in an attempt to craft a zero-waste building material that could also be produced in an ecological environment.
To create the bio-bricks, students introduced a natural microbial process known as microbial carbonate precipitation. This process utilizes an enzyme called urease that breaks down the urea in urine while also producing calcium carbonate. This cements the sand into any shape and ensures solid construction. The strength of the bricks can also be optimized to fit specific client needs by simply prolonging the process of construction.