
In this photo taken Friday, May 17, 2009, a high school lacrosse player sits on a field made of synthetic turf during practice at a playfield in north Seattle. The tiny bits of ground up tires that are used as filler between the blades of artificial grass have some health experts, activists and parents worried that children may be exposed to chemicals by inhaling or swallowing the rubber granules. (AP Photo/Elaine Thompson)
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