This listing is almost meaningless! It is based on one factor - PM2.5, Particular Matter measuring 2.5 microns across or less - very small dust or dirt particles. There are a number of more important factors to our health - cancer-causing chemicals in a city's drinking water is one.
Contaminated industrial sites which cities and EPA have knowingly covered up can be a source of dangerous gases escaping above ground for years. New Jersey's Meadowlands is an example. A New York Football Giants running back - this is like in the 1960's - practicing and playing there developed cancer. Some of these sites are conveniently made 'good' by naming them 'brownfield' redevelopment sites.
The source of the PM2.5 data for rating the polluted cities is EPA. They have a record of lies that makes the many told by Obama look extremely small.
The only reason Pittsburgh is on the list is the EPA has their air monitors set up next to the largest coke plant in the United Stated 15 miles or so from Downtown. Look at the picture of Pittsburgh. Doesn't look poluted to me?
Say what you want about California, I'm mostly indifferent, but I want to point out that those of you bashing them for green rules and being hippies ect and having 5 of the most polluted cities, did you even stop to think why they are enacting those rules??? Hmmm....
I think its time
WHAT DO YOU THINK?
Which of these extreme outdoor sports would you be brave enough to try?
- BASE jumping
- Ice climbing