After a good long while in the spotlight, and lots of panacea-like promises that turned out to be pandora's boxes, biofuels have faded into the green scenery a bit. Which isn't to say there isn't a place for them in a future low- or no-carbon energy mix.
If you want to catch up on the state of all the various methods of biofuel production, how far away from commercialization they are, what the potential yields are, who's producing what, over at Greentech Media, Vinod Khosla has just put out a really good chart outlining it and accompanying three page explanation--highly recommend reviewing itLike this? Follow me on Facebook.
More on Biofuels:
The Growing Potential and Rooted Limitations of Biofuels
Biofuels Bumpy Road: The Trials and Tribulations of Algae, Palm Oil, Bioelectricity, Feedstocks & Birds