Pollution Is For Poor People

Emily Badger flags a new study adding to the large body of evidence that environmental problems disproportionately affect poor and minority communities:

[R]esearchers at the University of Minnesota, writing in the journal PLOS ONE, have created a sweeping picture of unequal exposure to one key pollutant — nitrogen dioxide, produced by cars, construction equipment and industrial sources — that’s been linked to higher risks of asthma and heart attack. They’ve found, all over the country, in even the most rural states and the cleanest cities, that minorities are exposed to more of the pollution than whites. …

Specifically, they found that minorities are on average exposed to 38 percent higher levels of outdoor NO2 than whites in the communities where they live, based on demographic data from the 2000 census. That gap varies across the country, though, and it’s substantially wider in the biggest cities. Nationwide, the difference in exposure is…