Scientists are also looking at profiting from the leftovers from the production of corn ethanol and cellulosic ethanol, made from materials like switch grass, corn husks and prairie grass.

• 科学家也在研究从生产玉米乙醇和纤维素乙醇的剩馀物中获利，这两种乙醇的原料是柳枝稷、玉米皮和草原野草。