S.F. is the greenest in the realm -- or at least we say we areA study commissioned by the water bottle company Nalgene -- which definitely has a horse in this race -- has deemed San Francisco the nation's "1st least wasteful city" (their words) in a field of 25 major cities. Atlanta, as the headline indicates, came 25th, making it ostensibly the "last least wasteful city." You can see the city-by-city shakedown here; we beat out New York, Portland, Seattle, and Los Angeles to round out the top f