In May 2024, the United States reached a crucial milestone in its public health policy by enforcing the inaugural national standards for per- and polyfluoroalkyl substances (PFAS) in drinking water. The US Environmental Protection Agency (EPA), guided by President Joe Biden’s administration, introduced these legally binding regulations to protect communities from the detrimental impacts of […]

**New Mass Spectrometry Studies Question Water Microdroplet Chemistry** Recent studies by Ryan Julian and his team at the University of California, Riverside, challenge the previously accepted idea that water microdroplets can spontaneously produce hydroxyl radicals. This investigation indicates that trace ammonia contamination may be the cause of signals that were formerly identified as reactive hydroxyl […]