For more than 50 years, firefighters have relied on aqueous film forming foam—better known as AFFF—to quickly and effectively put out dangerous liquid fuel fires. However, due to health and environmental concerns, AFFF is now being rapidly phased out across the world. On today’s podcast, we talk with one of the world’s leading researchers on firefighting foams about why AFFF is going away, the work that has gone into finding suitable replacements, and what fire departments need to know as they make the transition.    LINKS: Read “The New Foam,” the cover story of the Fall 2022 issue of NFPA Journal   Read the 2022 Fire Protection Research Foundation report, “Firefighting Foams: Fire Service Roadmap”   Read the 2020 Fire Protection Research Foundation report, “Evaluation of the Fire Protection Effectiveness of Fluorine Free Firefighting Foams”