Forests in the United States removed 17.4 million tonnes (t) of air pollution in 2010, with most of the health impacts and benefitswithin urban areas.
Nowak, David J.; Hirabayashi, Satoshi; Bodine, Allison; Greenfield, Eric. 2014. Tree and forest effects on air quality and human health in the United States. Environmental Pollution. 193: 119-129.
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