With most lockdowns ending and economic activity resuming, levels of the air pollutant have returned to near normal for this time of year.
Published May 22, 2020Image of the Day Atmosphere Life Dust and Haze Human Presence Remote Sensing
In an effort to control smog during the 2008 Olympics, Beijing officials instituted a number of pollution-curbing measures.
Published May 20, 2007
Scientists using a NASA satellite found that sulfur dioxide levels in the vicinity of major coal-fired power plants in the U.S. have fallen by half since 2005.
Published Dec 2, 2011
NO2 amounts have dropped with the coronavirus quarantine, Chinese New Year, and a related economic slowdown.
Published Feb 28, 2020Image of the Day Atmosphere Life Dust and Haze Human Presence Remote Sensing
A decade of satellite observations show how levels of a common air pollutant have changed over Asian skies.
Published Dec 15, 2015
Levels of the air pollutant have dropped by about 80 percent over the eastern United States.
Published Dec 22, 2015
Sulfur dioxide emissions have declined in the eastern United States and risen slightly in Mexico.
Published May 26, 2017
Sulfur dioxide emissions from ore processing facilities in Norilsk exceed that of many volcanoes.
Published Jun 8, 2018Image of the Day Atmosphere Land Human Presence Remote Sensing
Emissions maps tell the story of global oil markets.
Published Mar 22, 2017
With new regulations of ozone-forming pollutants, bad air quality days in the eastern United States have dropped.
Published May 26, 2016
Measurements from OCO-2 will provide a baseline for monitoring changes in emissions.
Published Nov 17, 2016
As is often the case in the winter, haze hovered over the Indo-Gangetic Plain in January 2016, darkening skies over northern India and Bangladesh.
Published Jan 5, 2016
Devices that limit NOx emissions from electric power plants have helped clear the air over the United States.
Published Jun 27, 2014
Pollution controls can work even as coal-usage continues.
Published Nov 14, 2017
Using NASA’s Aura satellite and some new analysis techniques, researchers found previously missing or under-reported sources of the pollutant.
Published Jun 7, 2016
A new analysis of data from the Aura satellite shows greater concentrations of this atmospheric pollutant.
Published Dec 20, 2013
On July 12, 2008, Okmok Volcano, in Alaska’s Aleutian Islands erupted, releasing a plume of ash and steam. Besides emissions visible to human eyes, Okmok also released sulfur dioxide, a gas our eyes cannot see, but which can affect both human health and climate.
Published Jul 25, 2008
A new study shows that nocturnal animals are less active when the nights are too bright with electric lighting.
Published Oct 24, 2019
