Fads come fast and furious in our viral age, and the reactions to them can be equally ferocious. That’s what we’re seeing right now with biofuels, which everyone loved until everyone decided they were the worst thing since the Black Death. According to New York Times columnist Roger Cohen, biofuels remain very much part of the solution. It just depends which biofuels.
http://www.nytimes.com/2008/04/24/opinion/24cohen.html?_r=1&scp=2&sq=roger+cohen&st=nyt&oref=slogin