A pair of researchers at the University of California, Berkeley, has used satellite observations as a way to measure the lifetime of nitrogen oxide (NOx) levels above multiple North American cities. In their paper published ...
We've known for decades that catalysts speed up the reaction that reduces harmful industrial emissions. And now, we know exactly how they do it.
Materials Science
Oct 24, 2019
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195
Nitrogen oxides, also known as NOx, form when fossil fuels burn at high temperatures. When emitted from industrial sources such as coal power plants, these pollutants react with other compounds to produce harmful smog. To ...
Biochemistry
Aug 22, 2019
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129
A study by an international team of researchers, including Brazilian scientists, shows that urban pollution from Manaus, the capital of Amazonas State in Brazil, increases the formation of aerosols via the Amazon Rainforest ...
Environment
Jun 4, 2019
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78
The processes that create ozone pollution in the summer can also trigger the formation of wintertime air pollution, according to a new study from researchers at the University of Colorado Boulder and NOAA, in partnership ...
Earth Sciences
May 9, 2019
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37
Five years ago, in March 2014, researchers spent three hours packed aboard a steamy Gulfstream-1 research aircraft as it zig-zagged between pristine air over the Amazon rainforest and polluted air nearby. It was like a trip ...
Earth Sciences
Mar 29, 2019
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59
As air quality improves, the invisible chemistry happening in the air around us is changing. Skies should clear up as emissions drop, but recent results suggested that declining nitrogen oxides can create an environment where ...
Environment
Mar 26, 2019
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52
Nitric oxide is a fascinating and versatile molecule, important for all living things as well as our environment. It is highly reactive and toxic; it is used as a signaling molecule; it depletes the ozone layer in our planet's ...
Earth Sciences
Mar 18, 2019
0
540
Modern coal-fired power stations produce more ultrafine dust particles than road traffic and can even modify and redistribute rainfall patterns, a new 15-year international study shows.
Environment
Mar 12, 2019
2
504
Coal-fired power plants produce more than just carbon dioxide, which contributes to global warming. Coal burning also releases particulate matter, sulphur dioxide, nitrogen oxide and mercury—thus damaging the health of ...
Environment
Feb 20, 2019
7
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