Large-scale production of crop based (first generation) biofuels may not be feasible without adversely affecting
global food supply or encroaching on other important land uses.

Recent increases in production of crop-based (or first-generation) biofuels have engendered increasing
concerns over potential conflicts with food supplies and land protection, as well as disputes over greenhouse gas reductions. This has heightened a sense of urgency around the development of biofuels produced from non-food biomass (second-generation biofuels).