"The level of air pollution in California exceeded world “safe” levels by about 60 times last week after a series of deadly wildfires.
Particulates in the air in some areas of the state reached levels as high as 1,500 micrograms per cubic meter, according to Bloomberg. The World Health Organization-set healthy standard for such particulates is 25.
Rebecca Buchholz, from the National Center for Atmospheric Research, described the high levels as “just insane.”"
Source: The Hill, 11/20/2018
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