<http://schema.org/url>
<http://www.treehugger.com/renewable-energy/shell-quits-last-algae-biofuel-commitment-still-backing-ethanol-cellulosic-biofuels.html>
<http://www.treehugger.com/renewable-energy/shell-quits-last-algae-biofuel-commitment-still-backing-ethanol-cellulosic-biofuels.html>