Concentrations of the gas, which is produced by burning carbon-based fuels, have decreased since 2000.
Published Jun 2, 2015
This image, made with data from the Terra satellite, shows high levels of carbon monoxide over western Russia during the first week of August 2010.
Published Aug 11, 2010
This series of images shows high concentrations of carbon monoxide moving across the United States from the Wallow Fire in eastern Arizona between June 3 and June 6, 2011.
Published Jun 9, 2011
The high carbon monoxide concentrations shown in this satellite-based map reflect the poor air quality seen in the central and eastern United States on June 8, 2011.
Published Jun 10, 2011
