Wildfires in south eastern Brazil produce airborne pollution that worsens air quality in major cities such as Sao Paulo—canceling out efforts to improve the urban environment and posing health risks to citizens, according ...
Environment
20 hours ago
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10
A scientific paper published in 1985 was the first to report a burgeoning hole in Earth's stratospheric ozone over Antarctica. Scientists determined the cause to be ozone-depleting substances—long-lived artificial halogen ...
Earth Sciences
Jan 20, 2020
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A new paper quantifying small levels of iodine in Earth's stratosphere could help explain why some of the planet's protective ozone layer isn't healing as fast as expected.
Earth Sciences
Jan 13, 2020
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209
The recently discovered increase in emissions of trichlorofluoromethane (CFC-11) may delay the recovery of the Antarctic ozone hole by over a decade if it continues, suggests a modelling study in Nature Communications. Although ...
Environment
Dec 20, 2019
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85
Transgressing one planetary boundary can amplify human impacts on another one. For the first time, an international team of scientists has quantified some of the planetary-scale interactions in the Earth system. These biophysical ...
Environment
Dec 17, 2019
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The Montreal Protocol, an international agreement signed in 1987 to stop chlorofluorocarbons (CFCs) destroying the ozone layer, now appears to be the first international treaty to successfully slow the rate of global warming.
Environment
Dec 06, 2019
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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 ...
Pollutants from coal-fired power plants help make ground-level ozone, and a warming world exacerbates that. Recent rollbacks of U.S. energy regulations may speed climate change, keep pollutants coming, and thus slow the fight ...
Environment
Oct 25, 2019
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283
Ice shelves in the eastern Antarctic Peninsula may have been predisposed to collapse by hundreds years of thinning according to a study in Scientific Reports.
Earth Sciences
Oct 24, 2019
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Abnormally warm temperatures in the stratosphere over Antarctica dramatically limited ozone loss in September and October, resulting in the smallest ozone hole observed since 1982, NOAA and NASA scientists reported today.
Environment
Oct 22, 2019
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Ozone or trioxygen (O3) is a triatomic molecule, consisting of three oxygen atoms. It is an allotrope of oxygen that is much less stable than the diatomic O2. Ground-level ozone is an air pollutant with harmful effects on the respiratory systems of animals. The ozone layer in the upper atmosphere filters potentially damaging ultraviolet light from reaching the Earth's surface. It is present in low concentrations throughout the Earth's atmosphere. It has many industrial and consumer applications.
Ozone, the first allotrope of a chemical element to be recognized by science, was proposed as a distinct chemical compound by Christian Friedrich Schönbein in 1840, who named it after the Greek verb ozein (ὄζειν, "to smell"), from the peculiar odor in lightning storms. The formula for ozone, O3, was not determined until 1865 by Jacques-Louis Soret and confirmed by Schönbein in 1867.
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