<http://schema.org/about>
"We often get inquiries about  environmentally advantaged plastic products. 'Where can I find item \"X\"  made with recycled plastic, compostable plastic, biopolymers, less toxic material, etc'.   Over the last year, TreeHugger has posted on over 50 "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/new-biopolymer-versions-of-soronar-and-hytrelr-from-dupont.html>