New York City Decrease in Nitrogen Dioxide (IMAGE)

NASA/Goddard Space Flight Center

New York City Decrease in Nitrogen Dioxide

Caption

Satellite data show that New York City has seen a 32 percent decrease in nitrogen dioxide between the 2005-2007 (left) and 2009-2011 (right) periods. The city tops the charts in terms of U.S. population, which usually means more air pollution. Even here, however, the air is on the mend.

Credit

NASA Goddard's Scientific Visualization Studio/T. Schindler

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