<http://schema.org/alternativeHeadline>
"Biologists are concerned that mathematical models may be used by the FDA to tell the public that BPA is safe."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/research-innovations/stories/scientists-clash-over-bpa-do-low-doses-really-harm-people>