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Scientists Track the Paving of America

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Scientists Track the Paving of America

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Scientists Track the Paving of America

Scientists Track the Paving of America

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  • <iframe src="https://www.npr.org/player/embed/1965749/1965750" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">

Government scientists have determined exactly how much of the United States is covered by paved roads, parking lots, sidewalks and other impervious surfaces. The figures are already affecting developmental decisions and being used to calculate the nation's contribution to global climate change. NPR's John Nielsen reports.

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