Environmental campaigners warn that a surge of PFAS (per- and polyfluoroalkyl substances) chemicals are being introduced to meet the cooling and manufacturing demands of the expanding artificial intelligence industry. The chemicals, which are persistent pollutants linked to health and environmental concerns, are entering production at rates that campaigners say outpace regulatory oversight. Advocacy groups are calling for stronger controls on PFAS use in AI-related manufacturing processes before widespread contamination occurs.