With strong molecular bonds that can take centuries to break down in the environment, toxic “forever chemicals” are a threat to human and environmental health.  Their presence is increasing because they are being used in most pesticides that came into the market in recent years. With these chemicals also being in many consumer products, including clothing, the toxins they contain are showing up in drinking water and our bloodstreams. Fulton Schools Professor Rolf Halden, director of ASU’s Biodesign Center for Environmental Health Engineering, is among experts warning of the growing risk of exposure to the toxic substances. Researchers say it could take decades before we see the impacts of these fluorinated pesticides being sprayed on crops.