<http://schema.org/about>
"The Oil Drum post some interesting data on the energy input required to produce different kinds of foods; I threw them into bar chart form and it sure looks like Graham Hill should be pitching the idea of a Weekday Vegan rather than a Weekday"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/green-food/energy-required-to-produce-a-pound-of-food.html>