the us biofuel industry present & future hosein shapouri office of chief economist hshapouri oce usda gov december 5th 2003 conf rence agro demain reims france introduction in united states and many countries world ethanol is used as a gasoline additive not fuel only exception brazil prices crude oil petroleum refined products such mtbe are subsidized reflecting external costs burning health environmental effects overview production economic impacts federal state policies regulations conclusions renewable energy grains corn sorghum wheat etc sugar crops sugarcane beets tubers molasses waste starch biomass biodiesel oilseeds soybean rape seed yellow grease animal fats agricultural commodities surplus mostly produced that have excess natural resources or want to reduce green house gas emissions ghg examples wine european unions cane india china
