New fuels: Biofuels: A more economical process for making ethanol from non-food sources

Scientists in Wisconsin are reporting discovery of a way to lower the cost of converting wood, corn stalks and leaves, switch grass, and other non-food biomass materials into ethanol fuel. The process reduces amounts of costly enzymes needed to break down tough fibrous cellulose matter in biomass for fermentation into alcohol. Intro theme and music by Kevin MacLeod. Creative Commons licensed audio from freesound.iua.upf.edu.