Shogun

One of the biggest names in aviation has developed a jet engine that is more efficient, less polluting and cheaper to use than almost everything else in the sky, and it could revolutionize an industry facing skyrocketing fuel prices and mounting pressure to clean up its act.

Pratt & Whitney has spent the better part of two decades developing the geared turbofan engine that burns 12 to 15 percent less fuel than other jet engines and cuts carbon dioxide emissions by 1,500 tons per plane per year. It's being called one of the most exciting developments commercial aviation has seen in years, and it was a hot topic at the Eco-Aviation Conference, where the aviation industry spent two days charting the course to a greener future.

http://www.wired.com/cars/futuretran.../ecoaviation23