In a paper in Nature Communications, the researchers offer a techno-economic analysis of the technique to transform urine—which can seriously damage watersheds—into HAp, a calcium phosphate mineral projected to hold a market value of more than $3.5 billion by 2030. “This process achieves two goals at the same time,” says coauthor David Kisailus, a University of California, Irvine professor of materials science and engineering. Read More