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By Sarah Hayes, Iowa State University College of Engineering Known as ‘forever chemicals,’ per- and polyfluoroalkyl substances (PFAS) are compounds that impact our lives daily. Waterproof, durable, and long-lasting, PFAS are commonly used to repel water and grease. The chemicals are found in Teflon-coated pans, fast food wrappers, and even in the firefighting industry. While […]