In this age of high gasoline prices and oil shortages one's mind often turns to a.s.e. - alternative sources of energy. In particular, we often hear the phrase "go green". But in this story a.s.e may well stand for ass source of energy. Read on to see how one community plans to "go brown". In Manchester England they're tooting, make that touting, toilet power as the fuel of the future where the city's loos will help contribute to local gas supplies. Hey, mi gasa es tu gasa! Two companies - United Utilities Group and National Grid - plan to turn a by-product of the wastewater treatment plant at Davyhulme in Manchester, northwest England into gas for the local gas network and fuel for a fleet of sludge tankers. The companies have come up with one of the all-time greatest euphamisms for their product. In lieu of "shit" they're calling it "biomethane". Gee, next time I want to get out of doing the dinner dishes I'll say "Sorr...