Devices that limit NOx emissions from electric power plants have helped clear the air over the United States.
Published Jun 27, 2014
With new regulations of ozone-forming pollutants, bad air quality days in the eastern United States have dropped.
Published May 26, 2016
NASA’s Aura satellite observes nitrogen dioxide hovering over many cities in the region, trapped by winter weather conditions.
Published Jan 18, 2013
Emissions maps tell the story of global oil markets.
Published Mar 22, 2017
Beijing suffers from severe air pollution. The air quality in Beijing is determined by its geography, weather conditions, and anthropogenic emissions.
Published Apr 22, 2009
Scientists know cities are major emitters of greenhouse gases, but tracking emissions remains a challenge.
Published Nov 11, 2015
A new analysis of data from the Aura satellite shows greater concentrations of this atmospheric pollutant.
Published Dec 20, 2013
Air pollution far more severe than what’s common today used to plague many American towns and cities.
Published Sep 2, 2014
