Racial-ethnic minorities in the United States are exposed to disproportionately high levels of ambient fine particulate air pollution (PM), the largest environmental cause of human mortality. However, it is unknown which emission sources drive this disparity and whether differences exist by emission sector, geography, or demographics. Quantifying the PM exposure caused by each emitter type, we show that nearly all major emission categories-consistently across states, urban and rural areas, income levels, and exposure levels-contribute to the systemic PM exposure disparity experienced by people of color. We identify the most inequitable emission source types by state and city, thereby highlighting potential opportunities for addressing this persistent environmental inequity.
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| http://dx.doi.org/10.1126/sciadv.abf4491 | DOI Listing |
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