The grass may be greener if it's made of synthetic turf, but some communities are raising concerns about "forever chemicals" that may be found in many of the faux fields. "Think about the wisdom of putting down acres of plastic in the year 2024... and then allowing athletes to go play on that for hours a week," Dr. Kyla Bennett, director of science policy for advocacy group Public Employees for Environmental Responsibility (PEER), told ABC News. A number of synthetic turf fields in use today are believed to be made with plastic that may contain chemical substances perfluoroalkyl and polyfluoroalkyl, known as PFAS, according to advocates and industry specialists.