The Navy wants to run its aircraft and ships on 100 percent biofuel but cannot because the fuel is not a proper detergent for the engines, a problem the service wants industry's help in solving, Navy Secretary Ray Mabus said during a Jan. 25 clean energy conference in Washington. Mabus touted the successful flight last year of an F/A-18 Hornet running on a fuel blend that is half camelina -- a plant-based biofuel -- and regular aviation fuel, noting that...