Safety of ground up tires as playground surfacing questioned

For years, the Environmental Protection Agency has endorsed the recycling of ground-up tires to cushion the surfaces of children's playgrounds and sports fields — the same material used for the Obama family's new White House playground.

Now, the agency appears to be having second thoughts.

Three articles point out the concerns:
Legal Briefs: EPA Reconsidering Safety of Ground-Up-Tires as Playground Surfaces

Common Safety of Shredded Tires in Playgrounds Under Question

News Report: Government studies playground safety

The EPA scientists cited gaps in scientific evidence, despite other reviews showing little or no health concern. They urged their superiors to conduct a broad health study to inform parents on kids' safety.

Results from the agency's limited study, which began last year, are expected within weeks.