Biofuel-powered aircraft could be carrying millions of passengers around the world within three years, according to Boeing.
Seems similar to the the Air Force's recent certification activities across the entire USAF inventory approving its planes to fly on blended JP8 and synth fuels derived from coal and other sources. As the article points out, the trick for Boeing, Lockheed, EADS and the rest of the aircraft manufacturing and operating ecosystem is not about finding fuels that work with existing engines - they do. It's about making the new fuels, economically and in volomes that might begin to make a difference. So far, they don't.
Photo courtesy of Boeing