@ Commenters on my comment
My comment meant precisely what it said and and was about precisely what I quoted.
We're talking about Science and therefore precision counts. We already have an emotional, totally screwed up situation with Global Warming (or is it cooling, or possibly isothermia?) because a lot of people and politicians have embraced the concept without knowing - or caring about - the science thereof.
In the case of Biofuels we have a chance for rational debate now that the politicians and the "fuzzy feelers" have been (temporarily?) derailed.
In fact we have a chance for rational debate about energy in general, and I include battery power in this. maybe those people driving Priuses will understand that they are polluting a hell of a lot more that the marketing bods have misled them into thinking.
The fire icon 'cos I feel strongly about this,