They take up a fraction of the space required to grow other biofuels. (news.wsu.edu)
Corn - based ethanol does not appear to have any particular advantage over other biofuels, and it is questionable whether it can be significantly expanded without adverse consequences. (theoildrum.com)
And unlike other biofuel feedstocks, algae production has minimal impact on freshwater supplies — especially when it can be undertaken in ocean waters or even wastewater. (scientificamerican.com)