Those trendy biofuel powered demo flights are all the rage in the media these days. Here's another by Douglas Rodante and Carol (née Colin) Sugars:
Biofuel-powered jet completes transcontinental flight
The green folks at the EU have decided that some biofuels eat carbon credits and threaten biodiversity more than others and have started to more closely regulate (and tax) this latest emerging planet saving technology:
BBC News - EU biofuels 'need to be certified for sustainability'