The Environmental Protection Agency (EPA) in the United States has tightened air quality standards in an effort to help improve public health. The new level is reduced from 80 parts per billion to 75 parts per billion, 

It is lowering the amount of smog-forming ozone permitted in the atmosphere for the first time in more than 10 years. The EPA's clean air scientific advisory committee had unanimously recommended  a limit   no higher than 70 parts per billion  but industry has lobbied against them.

Industry leaders say complying with the new standards will prove expensive as if the social costs of the lethal  pollution and  destruction to the living environment were irrelevant. 

Where do these socially minded individals live? In oxygen tents located deep underground? 

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