Rush Hour Pollution May Be More Dangerous Than You Think - The first in-car measurements of exposure to pollutants during rush hour commutes found levels of some forms of harmful particulate matter inside car cabins to be twice as high as previously believed.

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Rush Hour Pollution May Be More Dangerous Than You Think - The first in-car measurements of exposure to pollutants during rush hour commutes found levels of some forms of harmful particulate matter inside car cabins to be twice as high as previously believed.