Environmental Protection Agency April 10, 2024 3:39 pm What are PFAS? PFAS or polyfluoroalkyl substances, also known as “forever chemicals”, are a class of chemicals used in consumer and industrial products. US & World Videos 9:28 Maya Rudolph and Andy Samberg reunite as Kamala Harris and Doug Emhoff in ‘SNL' cold open 4:27 Cloudy Sunday in New England 1:44 Steward Health CEO to step down 3:22 Partly sunny skies on Saturday 1:39 Funeral for MSP Trooper scheduled for today