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Even many decades later, redlined areas see higher levels of air pollution

"We see a really clear association between how these maps were drawn in the '30s and the air pollution disparities today," says an author of a study on the effects of the discriminatory policy.

Neighborhoods that were subject to redlining in the 1930s tend to have higher levels of air pollution many decades later, a new study has found.

The paper's authors looked at air quality data from 202 U.S. cities and found a strong correlation between pollution levels in 2010 and the historical patterns of redlining. Their study was published this week in the journal Environmental Science & Technology Letters.

was the discriminatory mortgage appraisal practice used by the federal government after the Great Depression, drawing

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