people always be talking about smog and pollution and what not so that got me wondering... i know people in Mexico city and eastern european cities and what not have a lot of health problems from the severally polluted air/water but what about more typical cities? is there really a difference between the air quality here in philly and the air in rural Indiana?
thanks
thanks
ACK!
: Great Basin national park in Nevada has the clearest air in the U.S. Although another national park said Bryce Canyon had the clearest air. Grand Escalante National monument also has very clear air.

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