PTFE soon appeared in households around the globe as a durable coating on frying pans under the brand name “Teflon.” It was a huge commercial success. But in 1998, the non-stick brand found itself in a sticky situation when a livestock farmer said his cows grazing near a Teflon production plant in Parkersburg West Virginia were wasting away and dropping dead. It soon came out that thousands of people in the region had been contaminated with PFAS through sewage from the DuPont factory and leaking landfill waste. Documents show that DuPont — unlike state authorities — had known of the danger for decades but continued to discharge the toxic substance into the environment. Other countries, including The Netherlands, Belgium and Italy, have seen cases of PFAS contaminating drinking water and the environment. Some of these forever chemicals are now being phased out in the EU, the USA and Japan, and the amount detected in the population has steadily decreased. In Germany, the average has more than halved since 1990. In response to the crackdown, the chemicals industry is manufacturing a new generation of PFAS that differ very little from their predecessors, but don’t fall under the ban for now.