Advanced biofuels are no longer a futuristic hope — they are here. This year, three companies including DuPont will turn on commercial-scale cellulosic ethanol biorefineries, the result of billions of dollars in investment and close to 10 years of collaborative research with universities, government agencies and other private entities. This is a tremendous step forward in our country’s effort to lower our dependence on finite fuel sources and to give consumers a renewable choice at the pump.