. >> it is a rare form every bone cancer, called osteo czar comb a you know, i couldn't really move afterain intense. >> teddy played goalie on artificial turf until he was eight. inbetween the blades of glass little pieces of recycles tire, make fields soft tow reduce impact injuries. safer, right? well some say maybe not. when you take a closer look. >> these are consistent with -- >> lab tests from crumb rubber where fields from he played showed it contain 30 hazardous substances including lead. so the question s. can the chemicals in this artificial turf cause cancer? one college soccer coach says yes. and she has gathered information on 13032 players getting cancer, that has many cancer concerned. >> i am angry i'm being forced to make a choice between allowing my child to play a sport, and/or endangering his health. >> mia's nine year old son place lacrosse on crumb rubber. she worried because the tiny pea cents get all over everything. >> it is right there at the surface, easily, gets on the clothing, and quick exposure to the body for the kids to breathe in. >> she tried to stop r