Air Quality This Week Gives U.S. a Glimpse of the World's Air Pollution
Briefly

The dangerous haze hovering over parts of the Northeast and Midwest on Wednesday morning was highly unusual for the United States.For many people around the world, it would be somewhat normal.Cities across Asia, Africa and Latin America have been so polluted for so long that air-quality readings like the ones expected across parts of New York State on Wednesday which is expected to pose risks for people with respiratory problems would not be seen as particular cause for alarm.
Read at www.nytimes.com
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