The Food and Drug Administration's about-face on the chemical bisphenol A (BPA), which is used to harden the plastic of sippy cups and baby bottles and to seal the inside of tin cans, could spur the adoption of bills in the California Legislature and U.S. Congress to restrict the chemical.

Despite a 2008 determination under President George W. Bush that the chemical was safe, the Obama administration said Friday that it would spend $30 million to study the effects of BPA. which has been lin...
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