<http://schema.org/about>
"Not only is plastic the ubiquitous bane of modern consumerist lifestyles, it's also increasingly seen as a potential health hazard. Fact: we now know that hard plastic polycarbonate"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/synthetic-estrogen-contaminating-popular-plastic-packaging-study.html>