The panel peer-reviewing EPA’s draft assessment of a per- and polyfluorinated substance (PFAS) known as PFHxA is praising many aspects of the document, including the agency’s decision not to rely on limited human-health studies, but some are questioning its overall strategy of assessing individual chemicals in the broad PFAS class separately. The number of known PFAS is “mind-boggling,” said one of the reviewers, Panagiotis Georgopoulos, a professor of environmental health at Rutgers’ public health school, during the panel’s May 16-17...