Biofuels have gained increasing attention as an alternative to fossil fuels for several reasons, one of which is their potential to reduce the greenhouse gas (GHG) emissions from the transportation sector. Recent studies have questioned the validity of claims about the potential for biofuels to...

Concerns about energy security, reduced dependence on exhaustible fossil fuels and climate change have led to significant policy support for biofuels, particularly for cellulosic biofuels. The Biomass Crop Assistance Program and volumetric tax credits for biofuels seek to supplement the...