Per- and polyfluoroalkyl substances (PFAS), better known as forever chemicals, are gaining notoriety for their ability to linger in the environment and for possible links to health problems. Now, scientists are finding these chemicals in surprising places, including beer. A study published in ACS Environmental Science & Technology analyzed beers brewed across different regions of the United States. The results showed that the highest PFAS levels appeared in beers made in areas where local water supplies are already known to be contaminated.