What if you learned that your favorite city parks had long been contaminated with toxic lead. Such was the predicament of city leaders but more importantly many Durham residents in the spring of 2023. My name is Dan Richter. I'm a professor of soil science at Duke University and my student Annie Bahari and I are the ones who who found this contamination in the spring of 2023 again. I study soils and how they change through time. In cities we we study how metals accumulate through time. We all know that urba ...