Interest
Proportion of Hacker News items mentioning "pfas" over time.
Mentions
Total number of Hacker News items mentioning "pfas" over time.
Per- and polyfluoroalkyl substances are a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain. The high chemical and thermal stability of PFAS leads to these compounds having long environmental lifetimes, hence the common nickname "forever chemicals". Read more on Wikipedia