<http://schema.org/image>
<http://media.treehugger.com/assets/images/2011/10/20101008-country-road.jpg>
<http://www.treehugger.com/renewable-energy/biofuels-bumpy-road-the-trials-and-tribulations-of-algae-palm-oil-bioelectricity-feedstocks-birds.html>