As much as half of the fentanyl sold on Philly’s streets contains an industrial chemical used in plastics manufacturing. That’s according to our November 2024 testing of fentanyl samples collected in Philadelphia’s Kensington neighborhood, regarded as the largest open-air drug market on the East Coast. What’s more, the amount, or concentration, of this industrial chemical in the drug samples often exceeded the amount of fentanyl. We are an epidemiologist and anthropologist whose research focuses...