The final eight in the Biofuels Digest voting

In the bracket format subscriber-voting popularity poll at Biofuels Digest, the final eight are


Solazyme vs OriginOil
Gevo vs Terrabon
Joule Unlimited vs Qteros
LS9 vs Novozymes

Separately, a post in the MIT Technology Review ends with the text:

However, in the end, cautions Mielenz, all biobutanol processes face the crucial challenge of requiring a switch from food sources such as corn, sugarcane or beets for their sugar feedstock to cellulosic biomass, which is more expensive to convert to fuels.