Blair Raughley / Invision for Focus Features, AP Chemicals known as PFAS were, until a few years ago, commonly used in carpets, clothing, Teflon and water-resistant items — they also contaminated local water supplies in some places and can now be found in the blood of nearly all people, the EPA says. While some exposure to PFAS can leave people relatively unscathed, concentrated levels of it can cause serious health problems. That's why the University of Cincinnati is delving into the issue at its inaugural Environmental Justice and Advocacy Symposium this week. Associate Professor Bob Hyland is among people on UC's Interdisciplinary Faculty Team for Development of Environmental Justice and Advocacy. He and others are hosting the free online symposium that's open to the public and taking place from 3-5 p.m. on Friday, Feb. 5.