<http://schema.org/description>
"Plenty of airlines are testing out biofuels in passenger jets, but helicopters have largely been ignored--until now. Australia-based Delta Helicopters is developing what it claims is the first diesel helicopter."^^<http://www.w3.org/2001/XMLSchema#string>
<http://inhabitat.com/delta-helicopters-developing-worlds-first-biofuel-capable-helicopter/>