biofuels produced from wood, grasses, or non-edible plant parts, such as corn stalks and wheat straw; 4 billion gallons of advanced renewable biofuels, other than ethanol derived from cornstarch, that achieve a life-cycle greenhouse gas threshold of at least 50 percent; and 1 billion gallons of biomass-based diesel fuel.The team said their study, published in Nature, was the first ???to show that