"Travel + Leisure" magazine just put out a list of the top 20 dirtiest cities in America.  And by "dirty," they mean actual dirt, air pollution, and litter . . . not "dirty" like skanky and morally questionable.

--Although either way, the number one city was obviously going to be New Orleans.

--And in fact, New Orleans IS number one on this list because of the sheer volume of litter on the street . . . some of which is people's fault, some of which was caused by Katrina.

--The rest of the top 10 is:  Philadelphia . . . Los Angeles . . . Memphis . . . New York City . . . Baltimore . . . Las Vegas . . . Miami . . . Atlanta . . . and Houston.

--Numbers 11 through 20 are:  San Juan, Puerto Rico . . . San Francisco . . . Dallas/Fort Worth . . . Boston . . . Washington, D.C. . . . San Antonio . . . Orlando . . . Chicago . . . Kansas City, Missouri . . . and Anchorage, Alaska.

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