When it comes to the quality of air in cities, how good is good enough? Air seem!

Question:

When it comes to the quality of air in cities, how good is good enough? Air seems important to me.?

http://money.cnn.com/magazines/moneymag/... has a list of clean air cities.

Answers:

Air is an illusion meant to give your life the appearence of atmosphere. Oxygen itself is a secret military death vapor.

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When it comes to the quality of air in cities, how good is good enough? Air seem!

When it comes to the quality of air in cities, how good is good enough? Air seems important to me.?

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