The world's 25 dirtiest cities - Marginal REVOLUTION

Here is the article, here is the top of the list:

1, Baku, Azerbaijan

2. Dhaka, Bangladesh

3. Antananarivo, Madagascar

4. Port-au-Prince (pre-quake? I believe they are now uncontested #1 or will be soon.)

5. Mexico City

Most of the rest are in Africa. If I did the ranking, Mexico City would do much better than number five, since air pollution isn't as bad as the lack of sanitation in cities such as Conakry (a mere #19). And why does Bangui (CAR) get such an idyllic photo? Nor does Google offer up any nasty photos of the place.

Hat tip goes to the essential Rachel Strohm, Twitter feed here.