<http://schema.org/about>
"A new report from the Rights and Resources Initiative starkly quantifies the amount of additional land which will have to be put under cultivation to satisfy the demands of a growing"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/biofuels-food-population-growth-to-put-increasing-pressure-on-forests.html>