Brahic states that according to researchers, the most effective way to produce biofuel may comes from normal grasses, as it can fill up 19% of global demand of electricity, simultaneously reduce carbon emission worldwide.
Tilman and colleagues  at the University of Minnesota, US, state that biofuel produced from grass can have higher productivity than conventional methods. Furthermore, this way of manufacturing biofuel can help slowing down green house effect.
On the other hand, biofuel produced from corn has been criticized to be harmful for the atmosphere as it requires gasoline to operate tools to enrich the lands and processing corn into fuel.
1. Catherine Brahic. Humble grasses may be the best source of biofuel [Internet]. New