How safe is the artificial turf your child plays on?

Image: Amy Griffin, associate head coach for the women's soccer team at the University of Washington
Amy Griffin, associate head coach for the women's soccer team at the University of Washington, sits on the bleachers before a game in Portland, Oregon. Griffin, who has coached goalkeepers since the 1980s, is questioning whether chemicals in crumb rubber artificial turf are making goalkeepers sick.NBC News