We generally like to highlight the good rather than harp on the bad. That said, we thought this list of the ten most polluted places in the world was worth passing on. It's really well researched and we're thinking of it more as reality check than scare tactic.
Topping the list is Sumgayit, Azerbaijan where "A high percentage of babies are born premature, stillborn, and with genetic defects like Mongolism, anencephaly, spina bifida, hydrocephalus, bone disease, and mutations such as club feet, cleft palate, and four or six fingers or toes."
Holy crap. Not in anyone's back yard.
Here's the list. Via archinect.