Crack! Lightning strikes are bright and loud—violent enough to shake your bones and light up the sky. Now, a new study led by the University of Colorado Boulder suggests that these powerful events may also alter the chemistry ...
Earth Sciences
Oct 11, 2021
0
35
The U.N. weather agency says the world—and especially urban areas—experienced a brief, sharp drop in emissions of air pollutants last year amid lockdown measures and related travel restrictions put in place over the coronavirus ...
Environment
Sep 3, 2021
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25
Your ride might be a modest one—but if it burns gasoline, you have precious metals on board. To reduce pollution at the tailpipe, gasoline cars and trucks today come equipped with catalytic converters that contain platinum-group ...
Materials Science
Aug 19, 2021
0
333
You may have seen the before-and-after-lockdown photos of major cities that appear to show dramatic changes in air quality. In one, the India Gate war memorial in New Delhi is barely visible amid the smog. Then, during lockdown, ...
Environment
Aug 3, 2021
1
4
Nitrogen oxide (NOx), such as nitric oxide (NO), are environmental pollutants. They are often removed via selective catalytic reduction (SCR) technology.
Materials Science
Jul 27, 2021
0
48
We know coal-fired power stations can generate high levels of carbon dioxide, but did you know they can be a major source of mercury emissions as well?
Environment
Jul 6, 2021
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3
COVID-19 has changed the world in unimaginable ways. Some have even been positive, with new vaccines developed in record time. Even the extraordinary lockdowns, which have had severe effects on movement and commerce, have ...
Environment
Jun 18, 2021
1
7
Our reliance on fossil fuels as a primary energy source has pushed air pollution to an all-time high, resulting in several environmental and health concerns. Among the major pollutants, nitrogen oxide (NOx) accumulation can ...
Materials Science
May 20, 2021
0
10
The acidity of the atmosphere is increasingly determined by carbon dioxide and organic acids such as formic acid. The second of these contribute to the formation of aerosol particles as a precursor of raindrops and therefore ...
Earth Sciences
May 12, 2021
0
13
Aerosol products used in the home now emit more harmful volatile organic compound (VOC) air pollution than all the vehicles in the UK, new research shows.
Environment
Apr 27, 2021
1
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