BOSTON (AP) — Environmental and health groups are pushing dozens of fast food companies, supermarkets chains and other retail outlets to remove PFAS from their packaging. Known as “forever chemicals” for their persistence in the environment, PFAS have been used for decades to prevent grease, water and other liquids from soaking through wrappers, boxes and bags. Opponents of the practice argue that PFAS-treated packaging poses a danger to consumers as well as the environment, since the waste ends up as landfill. in compost or incinerated where the chemicals can leach into groundwater or the soil. They contend there are safer alternatives.