So what's the value of Clean Air?



( http://www.businessinsider.com/china-smog-deaths-2016-12 )

Smog is related to nearly one-third of deaths in China, putting it on a par with smoking as a threat to health, according to an academic paper based on the study of air pollution and mortality data in 74 cities and published in an international journal.

The findings by Nanjing University’s School of the Environment, which were published in the November edition of the journal the Science of the Total Environment, provides the latest scientific estimates of the health cost of China’s notorious smog.

The latest bout of smog began last Friday, affecting about half a billion people on the mainland, with the severest impact in the last three days.

Previous research work have found equally alarming results about the country’s toxic air. The International Energy Agency published its first study on air pollution in June and estimated that severe air pollution has shortened life expectancy in China by an average 25 months. 

...  read the article at the link above for more..

Iran.. ( http://www.cnn.com/2016/11/17/middleeast/tehran-smog-deaths-iran/ )

and England in the 1950's.. ( https://en.wikipedia.org/wiki/Great_Smog_of_London )

Air quality is directly related to Life expectancy..  that's worth something.