Scientists have developed a method that can transform human urine into the hard mineral in bones and tooth enamel. … "This process achieves two goals at the same time," study co-author David Kisailus, a professor of materials science and engineering at the University of California, Irvine, said in a statement. "On the one hand, it helps remove human urine from wastewater streams, mitigating environmental pollution and the buildup of unwanted nutrients; and on the other hand, it produces a material that can be commercially marketed for use in a variety of settings.". Read More