//www.koonmotors.com/news/earth_climate/ozone_holes/ Ozone Depletion Research. Learn what caused the holes in the ozone layer and how the ozone layer is recovering since the banning of CFCs. Read how certain clouds affect ozone depletion and more. en-us Thu, 29 Jun 2023 13:54:21 EDT Thu, 29 Jun 2023 13:54:21 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/earth_climate/ozone_holes/ For more science news, visit ScienceDaily. //www.koonmotors.com/releases/2023/06/230626164236.htm New research reduces uncertainty in future climate change linked to the stratosphere, with important implications for life on Earth. A significant source of uncertainty relates to future changes to water vapor in the stratosphere, an extremely dry region of the atmosphere 15--50 km above the Earth's surface. Future increases in water vapor here risk amplifying climate change and slowing down the recovery of the ozone layer, which protects life on Earth from harmful solar ultraviolet radiation. Mon, 26 Jun 2023 16:42:36 EDT //www.koonmotors.com/releases/2023/06/230626164236.htm //www.koonmotors.com/releases/2023/05/230522161604.htm New research shows that the 1987 global treaty, designed to protect the ozone layer, has postponed the occurrence of the first ice-free Arctic by as much as 15 years. Mon, 22 May 2023 16:16:04 EDT //www.koonmotors.com/releases/2023/05/230522161604.htm //www.koonmotors.com/releases/2023/05/230508114018.htm A new study found that air pollution from the oil and gas sector in the United States has substantial adverse impacts on air quality, human health, and health costs. The findings show that the pollutants nitrogen oxide (NO2), fine particulate matter (PM2.5) and ozone (O3) from U.S. oil and gas production contributed to 7,500 excess deaths, 410,000 asthma attacks, and 2,200 new cases of childhood asthma across the U.S. in 2016. Mon, 08 May 2023 11:40:18 EDT //www.koonmotors.com/releases/2023/05/230508114018.htm //www.koonmotors.com/releases/2023/03/230314155054.htm A research team demonstrates that increased levels of ozone resulting from anthropogenic air pollution can degrade insect sex pheromones, which are crucial mating signals, and thus prevent successful reproduction. The oxidizing effect of ozone causes the carbon-carbon double bonds found in the molecules of many insect pheromones to break down. Therefore, the specific chemical mating signal is rendered dysfunctional. The researchers show this effect in the vinegar fly Drosophila melanogaster and nine other species of the genus Drosophila. Most remarkably, the disrupted sexual communication also led to male flies exhibiting unusual mating behavior towards ozonated males of their own species. Tue, 14 Mar 2023 15:50:54 EDT //www.koonmotors.com/releases/2023/03/230314155054.htm //www.koonmotors.com/releases/2023/03/230310103451.htm New evidence shows that exceeding the World Health Organization (WHO) ozone limit is associated with substantial increases in hospital admissions for heart attack, heart failure and stroke. Even ozone levels below the WHO maximum were linked with worsened health. Fri, 10 Mar 2023 10:34:51 EST //www.koonmotors.com/releases/2023/03/230310103451.htm //www.koonmotors.com/releases/2023/03/230308112113.htm A new study finds that smoke particles in the stratosphere can trigger chemical reactions that erode the ozone layer -- and that smoke particles from Australian wildfires widened the ozone hole by 10 percent in 2020. Wed, 08 Mar 2023 11:21:13 EST //www.koonmotors.com/releases/2023/03/230308112113.htm //www.koonmotors.com/releases/2023/02/230214154013.htm Researchers have summarized the threats that future rocket launches would pose to Earth's protective ozone layer. Tue, 14 Feb 2023 15:40:13 EST //www.koonmotors.com/releases/2023/02/230214154013.htm //www.koonmotors.com/releases/2023/01/230118195824.htm Long-term measurements in the urban area of Innsbruck, Austria, show that the fraction of ozone near the surface tends to be overestimated in atmospheric models. Consequently, a fundamental assumption for air quality forecasting has to be reinterpreted for urban areas. Direct nitrogen dioxide emissions are also likely overestimated. Wed, 18 Jan 2023 19:58:24 EST //www.koonmotors.com/releases/2023/01/230118195824.htm //www.koonmotors.com/releases/2022/12/221209135611.htm Assuring that a growing global population has access to clean water will require new water treatment methods. One of these next-generation methods involves a form of iron called ferrate, which creates fewer toxic byproducts than chemicals like chlorine and is potentially cheaper and easier to deploy than complex ozone treatment systems. For ferrate to work best, however, it needs to be combined with other compounds or excited by light energy. Now, using a technique involving ultra-fast laser and X-ray pulses, a team of researchers has revealed new details about the chemical reaction that occurs when ferrate is exposed to visible and ultraviolet light. Fri, 09 Dec 2022 13:56:11 EST //www.koonmotors.com/releases/2022/12/221209135611.htm //www.koonmotors.com/releases/2022/12/221207142429.htm When winter chill strikes, people stay indoors more often, giving airborne pathogens -- such as SARS-CoV-2 and influenza -- prime opportunities to spread. Germicidal ultraviolet (GUV) lamps can help disinfect circulating air, but their UVC wavelengths could also transform airborne compounds into potentially harmful substances. Now, researchers have modeled the reactions initiated by UVC sanitizing light and find that there's a trade-off between removing viruses and producing air pollutants. Wed, 07 Dec 2022 14:24:29 EST //www.koonmotors.com/releases/2022/12/221207142429.htm //www.koonmotors.com/releases/2022/12/221206132743.htm Researchers have simulated how climate change will affect the distribution of two leading allergens -- oak and ragweed pollens -- across the contiguous United States. The results may make your eyes water. Using computer models, the team found that by 2050 climate change significantly will increase airborne pollen loads, with some of the largest surges occurring in areas where pollen is historically uncommon. Tue, 06 Dec 2022 13:27:43 EST //www.koonmotors.com/releases/2022/12/221206132743.htm //www.koonmotors.com/releases/2022/11/221114190552.htm A new experiment conducted at the world's largest particle physics laboratory, demonstrates the mechanism for how the gas-phase form of iodine -- known as iodic acid -- forms, and suggests it has a catalytic role in atmospheric particle formation. Mon, 14 Nov 2022 19:05:52 EST //www.koonmotors.com/releases/2022/11/221114190552.htm //www.koonmotors.com/releases/2022/11/221109085816.htm When fields of oilseed rape are exposed to diesel exhaust and/or ozone -- both found in emissions from diesel burning vehicles and industry -- the number of parasitic insects available to control aphids drops significantly, according to research published today. Wed, 09 Nov 2022 08:58:16 EST //www.koonmotors.com/releases/2022/11/221109085816.htm //www.koonmotors.com/releases/2022/10/221027124057.htm The annual Antarctic ozone hole reached an average area of 8.9 million square miles (23.2 million square kilometers) between Sept. 7 and Oct. 13, 2022. This depleted area of the ozone layer over the South Pole was slightly smaller than last year and generally continued the overall shrinking trend of recent years. Thu, 27 Oct 2022 12:40:57 EDT //www.koonmotors.com/releases/2022/10/221027124057.htm //www.koonmotors.com/releases/2022/09/220929132119.htm 在过去的几十年中,臭氧浓度的增加ution have been interrupting pollination, impacting the livelihood of both plants and the animals that pollinate them. Researchers now explain how an excess of ground-level ozone can damage plant foliage, change plants' flowering patterns, and act as a barrier to pollinators finding blooms. Thu, 29 Sep 2022 13:21:19 EDT //www.koonmotors.com/releases/2022/09/220929132119.htm //www.koonmotors.com/releases/2022/09/220922124355.htm At the beginning of the year, the World Health Organization (WHO) announced that the Middle East ranks among the regions with the worst air quality. There is a common misconception that desert dust is the most significant cause of air pollution from particulate matter in this region, but a new study has shown that more than 90 percent of the particulate matter that is detrimental to health originates from anthropogenic sources. This human-made fine particulate matter differs from the less harmful desert dust particles. Scientists determined this through ship borne measurements and verified it in elaborate modeling calculations. The anthropogenic particles are primarily caused by the production and use of fossil fuels such as oil and gas. They are generally smaller than desert dust and can penetrate deep into the lungs. Thu, 22 Sep 2022 12:43:55 EDT //www.koonmotors.com/releases/2022/09/220922124355.htm //www.koonmotors.com/releases/2022/09/220915104745.htm Dirty windows can harbor potentially harmful pollutants under protective films of fatty acids from cooking emissions -- and these can hang around over long periods of time. Thu, 15 Sep 2022 10:47:45 EDT //www.koonmotors.com/releases/2022/09/220915104745.htm //www.koonmotors.com/releases/2022/09/220906114216.htm The 2019/20 wildfires in Australia transported more smoke into the atmosphere than observed ever before anywhere in the world. In the so-called Black Summer, three times as many particles reached high air layers as in the previous record wildfires in Canada during summer 2017. Research now reveals the climate impact of these huge fires: Smoke particles with a total mass of around one million tonnes spread across the southern hemisphere and affected the climate for about one and a half years by warming the upper atmosphere and cooling the lower atmosphere close to Earth's surface. Tue, 06 Sep 2022 11:42:16 EDT //www.koonmotors.com/releases/2022/09/220906114216.htm //www.koonmotors.com/releases/2022/09/220901151703.htm High levels of hydroxyl radicals (OH) can be generated indoors, simply due to the presence of people and ozone. Thu, 01 Sep 2022 15:17:03 EDT //www.koonmotors.com/releases/2022/09/220901151703.htm //www.koonmotors.com/releases/2022/08/220824120815.htm Researchers have developed a new method for assessing the impacts of ozone-destroying substances that threaten the recovery of the ozone layer. 结婚,2022年8月24日12:08:15美国东部时间 //www.koonmotors.com/releases/2022/08/220824120815.htm //www.koonmotors.com/releases/2022/07/220728143011.htm New evidence from Antarctica shows that toxic 'fluorinated forever chemicals' have increased markedly in the remote environment in recent decades and scientists believe CFC-replacements could be among likely sources. Thu, 28 Jul 2022 14:30:11 EDT //www.koonmotors.com/releases/2022/07/220728143011.htm //www.koonmotors.com/releases/2022/07/220707141840.htm Researchers have established that the destruction of ozone over the Arctic in the spring causes abnormal weather throughout the northern hemisphere, with many places being warmer and drier than average -- or too wet. Thu, 07 Jul 2022 14:18:40 EDT //www.koonmotors.com/releases/2022/07/220707141840.htm //www.koonmotors.com/releases/2022/07/220707141837.htm Researchers have discovered why reducing particle pollution is leading to a rise in photochemical smog in some emerging economies such as India, Africa and China. Thu, 07 Jul 2022 14:18:37 EDT //www.koonmotors.com/releases/2022/07/220707141837.htm //www.koonmotors.com/releases/2022/07/220705112242.htm Scientist reveal a large, all-season ozone hole in the lower stratosphere over the tropics comparable in depth to that of the well-known springtime Antarctic hole, but roughly seven times greater in area. The observed data agree well with the cosmic-ray-driven electron reaction (CRE) model and strongly indicate the identical physical mechanism working for both Antarctic and tropical ozone holes. Tue, 05 Jul 2022 11:22:42 EDT //www.koonmotors.com/releases/2022/07/220705112242.htm //www.koonmotors.com/releases/2022/06/220626200208.htm A formidable space tourism industry may have a greater climate effect than the aviation industry and undo repair to the protective ozone layer if left unregulated, according to a new study. Sun, 26 Jun 2022 20:02:08 EDT //www.koonmotors.com/releases/2022/06/220626200208.htm //www.koonmotors.com/releases/2022/04/220422094308.htm New research has identified a lesser-known form of ozone playing a big role in heating the Southern Ocean -- one of Earth's main cooling systems. Fri, 22 Apr 2022 09:43:08 EDT //www.koonmotors.com/releases/2022/04/220422094308.htm //www.koonmotors.com/releases/2022/03/220331121243.htm New research reveals ozone in the lower atmosphere in particular contributed to warming in the Southern Ocean - which absorbs much of the planet's excess heat - more than previously realized. The study shows that ozone is more than just a pollutant, but also may be playing a significant role in climate change. Thu, 31 Mar 2022 12:12:43 EDT //www.koonmotors.com/releases/2022/03/220331121243.htm //www.koonmotors.com/releases/2022/03/220317143749.htm A new study shows that smoke from wildfires destroys the ozone layer. Researchers caution that if major fires become more frequent with a changing climate, more damaging ultraviolet radiation from the sun will reach the ground. Thu, 17 Mar 2022 14:37:49 EDT //www.koonmotors.com/releases/2022/03/220317143749.htm //www.koonmotors.com/releases/2022/02/220228150626.htm Atmospheric chemists have found that the smoke from Australia's 'Black Summer' wildfires set off chemical reactions in the stratosphere that contributed to the destruction of ozone. The study is the first to establish a chemical link between wildfire smoke and ozone depletion. Mon, 28 Feb 2022 15:06:26 EST //www.koonmotors.com/releases/2022/02/220228150626.htm //www.koonmotors.com/releases/2022/02/220215125513.htm An international effort to measure air quality in South Korea, a region with complex sources of pollution, may provide new insights into the atmospheric chemistry that produces ozone pollution, according to a team of scientists. Tue, 15 Feb 2022 12:55:13 EST //www.koonmotors.com/releases/2022/02/220215125513.htm //www.koonmotors.com/releases/2022/01/220131161546.htm When did the Earth reach oxygen levels sufficient to support animal life? Researchers have discovered that a rise in oxygen levels occurred in step with the evolution and expansion of complex, eukaryotic ecosystems. Their findings represent the strongest evidence to date that extremely low oxygen levels exerted an important limitation on evolution for billions of years. Mon, 31 Jan 2022 16:15:46 EST //www.koonmotors.com/releases/2022/01/220131161546.htm //www.koonmotors.com/releases/2022/01/220113151441.htm As Earth's ozone layer recovers from past emissions of now-banned CFCs and halons, other chemicals are emerging as major causes of stratospheric ozone depletion. Atmospheric scientists have been searching for the sources of about one-third of the major threats, methyl bromide and methyl chloride. New research shows that copper-based compounds in common use generate these compounds when interacting with soil and seawater, with sunlight boosting production by a factor of 10. Thu, 13 Jan 2022 15:14:41 EST //www.koonmotors.com/releases/2022/01/220113151441.htm //www.koonmotors.com/releases/2022/01/220106110019.htm Large wildfires and severe heat events are happening more often at the same time, worsening air pollution across the western United States, a study has found. In 2020, more than 68% of the western U.S. -- representing about 43 million people -- were affected in one day by the resulting harmful-levels of air pollution, the highest number in 20 years. The study found that these concurrent air pollution events are increasing not only in frequency but duration and geographic extent across the region. They have become so bad that they have reversed many gains of the Clean Air Act. The conditions that create these episodes are also expected to continue to increase, along with their threats to human health. Thu, 06 Jan 2022 11:00:19 EST //www.koonmotors.com/releases/2022/01/220106110019.htm //www.koonmotors.com/releases/2022/01/220105202758.htm Nearly 2 million new cases of pediatric asthma every year may be caused by a traffic-related air pollutant, a problem particularly important in big cities around the world, according to a new study. Wed, 05 Jan 2022 20:27:58 EST //www.koonmotors.com/releases/2022/01/220105202758.htm //www.koonmotors.com/releases/2022/01/220104192530.htm During long portions of the past 2.4 billion years, the Earth may have been more 'inhospitable' to life than scientists previously thought, according to new computer simulations. Using a state-of-the-art climate model, researchers now believe the level of ultraviolet (UV) radiation reaching the Earth's surface could have been underestimated, with UV levels being up to ten times higher. Tue, 04 Jan 2022 19:25:30 EST //www.koonmotors.com/releases/2022/01/220104192530.htm //www.koonmotors.com/releases/2021/12/211222153149.htm When winds loft fine desert dust high into the atmosphere, iodine in that dust can trigger chemical reactions that destroy some air pollution, but also let greenhouse gases stick around longer. The finding may force researchers to re-evaluate how particles from land can impact the chemistry of the atmosphere. Wed, 22 Dec 2021 15:31:49 EST //www.koonmotors.com/releases/2021/12/211222153149.htm //www.koonmotors.com/releases/2021/12/211214084533.htm New research has discovered that emissions coming from China of the ozone-destroying chemical, dichloromethane, have more than doubled over the last decade. Tue, 14 Dec 2021 08:45:33 EST //www.koonmotors.com/releases/2021/12/211214084533.htm //www.koonmotors.com/releases/2021/11/211117115134.htm 社会成本的一氧化二氮,一种温室气体that is the largest remaining threat to the ozone layer, is understated, concludes an international team of researchers. In their assessment, the authors write that improving the accuracy of these calculations would not only give a more accurate picture of the impact of climate change, but also spur nations to more aggressively address it. Wed, 17 Nov 2021 11:51:34 EST //www.koonmotors.com/releases/2021/11/211117115134.htm //www.koonmotors.com/releases/2021/11/211116111318.htm Observational data shows air pollution in India decreased drastically in the first COVID-19 lockdown when emissions from vehicles naturally declined, but researchers say those numbers only tell part of the story -- blue skies and an absence of visible smog can be deceiving and hide pollutants that could potentially cause health issues. Tue, 16 Nov 2021 11:13:18 EST //www.koonmotors.com/releases/2021/11/211116111318.htm //www.koonmotors.com/releases/2021/11/211108130900.htm 气候变化正越来越影响the structure of Earth's atmosphere, a new international study shows. The research draws on decades of observations to quantify that warming temperatures are playing a greater role in pushing up the top of the lowest level of the atmosphere by about 50-60 meters per decade. Mon, 08 Nov 2021 13:09:00 EST //www.koonmotors.com/releases/2021/11/211108130900.htm //www.koonmotors.com/releases/2021/10/211013174023.htm The massive columns of smoke generated by a nuclear war would alter the world's climate for years and devastate the ozone layer, endangering both human health and food supplies, new research shows. The international study draws on newly developed computer climate modeling techniques to paint an even grimmer picture of a global nuclear war's aftermath than previous analyses. Wed, 13 Oct 2021 17:40:23 EDT //www.koonmotors.com/releases/2021/10/211013174023.htm //www.koonmotors.com/releases/2021/10/211006134930.htm An international agreement to protect the ozone layer is expected to prevent 443 million cases of skin cancer and 63 million cataract cases for people born in the United States through the end of this century, according to new research. The research team developed a computer modeling approach that revealed the effect of the Montreal Protocol and subsequent amendments on stratospheric ozone, the associated reductions in ultraviolet radiation, and the resulting health benefits. Wed, 06 Oct 2021 13:49:30 EDT //www.koonmotors.com/releases/2021/10/211006134930.htm //www.koonmotors.com/releases/2021/08/210821113851.htm The same phenomenon that causes aurorae -- the magical curtains of green light often visible from the polar regions of the Earth -- causes mesospheric ozone layer depletion, which could have significance for global climate change. Now, a group of scientists has observed, analyzed, and provided greater insight into this phenomenon. Sat, 21 Aug 2021 11:38:51 EDT //www.koonmotors.com/releases/2021/08/210821113851.htm //www.koonmotors.com/releases/2021/08/210818130504.htm New modelling by the international team of scientists paints a dramatic vision of a scorched planet Earth without the Montreal Protocol, what they call the 'World Avoided'. This study draws a new stark link between two major environmental concerns -- the hole in the ozone layer and global warming. The research team reveals that if ozone-destroying chemicals, which most notoriously include CFCs, had been left unchecked then their continued and increased use would have contributed to global air temperatures rising by an additional 2.5°C by the end of this century. Wed, 18 Aug 2021 13:05:04 EDT //www.koonmotors.com/releases/2021/08/210818130504.htm //www.koonmotors.com/releases/2021/07/210709193531.htm Two factors that play a key role in climate change - increased climate warming and elevated ozone levels - appear to have detrimental effects on soybean plant roots, their relationship with symbiotic microorganisms in the soil and the ways the plants sequester carbon. Fri, 09 Jul 2021 19:35:31 EDT //www.koonmotors.com/releases/2021/07/210709193531.htm //www.koonmotors.com/releases/2021/06/210624170846.htm Ozone levels in the earth's troposphere (the lowest level of our atmosphere) can now be forecasted with accuracy up to two weeks in advance, a remarkable improvement over current systems that can accurately predict ozone levels only three days ahead. The new artificial intelligence system could lead to improved ways to control high ozone problems and even contribute to solutions for climate change issues. Thu, 24 Jun 2021 17:08:46 EDT //www.koonmotors.com/releases/2021/06/210624170846.htm //www.koonmotors.com/releases/2021/06/210623091155.htm A new study shows that extremely low winter temperatures high in the atmosphere over the Arctic are becoming more frequent and more extreme because of climate patterns associated with global warming. The study also shows that those extreme low temperatures are causing reactions among chemicals humans pumped into the air decades ago, leading to greater ozone losses. Wed, 23 Jun 2021 09:11:55 EDT //www.koonmotors.com/releases/2021/06/210623091155.htm //www.koonmotors.com/releases/2021/06/210616094059.htm 在地面臭氧是一种污染物,但非常高h in the atmosphere's 'ozone layer,' it absorbs damaging ultraviolet radiation. Past studies have examined ozone levels in the Southern Hemisphere, but little is known about levels of the molecule in Antarctica over long periods. Now, researchers have analyzed more than 25 years of Antarctic data, finding that concentrations near the ground arose from both natural and human-related sources. Wed, 16 Jun 2021 09:40:59 EDT //www.koonmotors.com/releases/2021/06/210616094059.htm //www.koonmotors.com/releases/2021/05/210526093111.htm Tiny charged electrons and protons which can damage satellites and alter the ozone have revealed some of their mysteries to scientists. Wed, 26 May 2021 09:31:11 EDT //www.koonmotors.com/releases/2021/05/210526093111.htm //www.koonmotors.com/releases/2021/04/210427122431.htm 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. A new study reveals that the picture is damaging globally with the world's population now using huge numbers of disposable aerosols - more than 25 billion cans per year. Tue, 27 Apr 2021 12:24:31 EDT //www.koonmotors.com/releases/2021/04/210427122431.htm //www.koonmotors.com/releases/2021/04/210415114202.htm One consequence of the coronavirus pandemic has been global restrictions on mobility. This, in turn, has had an effect on pollution levels in the atmosphere. Researchers from across the world are using this unique opportunity to take measurements, collect data, and publish studies. An international team has now published a comprehensive review providing an overview of results up to September 2020. Thu, 15 Apr 2021 11:42:02 EDT //www.koonmotors.com/releases/2021/04/210415114202.htm //www.koonmotors.com/releases/2021/04/210405123308.htm A new study has shown that ozone in the lower layers of the atmosphere decreases crop yields in maize and changes the types of chemicals that are found inside the leaves. Mon, 05 Apr 2021 12:33:08 EDT //www.koonmotors.com/releases/2021/04/210405123308.htm //www.koonmotors.com/releases/2021/03/210323150822.htm Organic aerosol pollutants have decreased in the Los Angeles area due to strict vehicle emissions controls, but aerosol levels still rise in hot weather to unhealthful levels. While some attribute these aerosols to household cleaning products, researchers have identified a more probable cause: chemicals emitted by vegetation. Given the number of trees in LA, like the isoprene-emiting Mexican fan palm, it's likely that 25% of organic aerosols are from plants. Tue, 23 Mar 2021 15:08:22 EDT //www.koonmotors.com/releases/2021/03/210323150822.htm //www.koonmotors.com/releases/2021/03/210315160722.htm The ocean, a longtime reservoir for CFC-11, will become a source of the ozone-depleting chemical by middle of next century. Mon, 15 Mar 2021 16:07:22 EDT //www.koonmotors.com/releases/2021/03/210315160722.htm //www.koonmotors.com/releases/2021/03/210301151553.htm Recently, the ozone season in China has been getting longer, spreading from summer into early spring and late winter. The COVID-19 lockdown can help explain why. Researchers found that decreases in NOx emissions are driving increased ozone pollution in late winter in China. Mon, 01 Mar 2021 15:15:53 EST //www.koonmotors.com/releases/2021/03/210301151553.htm //www.koonmotors.com/releases/2021/02/210222082622.htm Analysis of records for more than 63 million Medicare enrollees from 2000 to 2016 finds long-term exposure to air pollution had a significant impact on the number of people hospitalized for cardiac and respiratory conditions. Researchers examined three components of air pollution: fine particulate matter, nitrogen dioxide and ozone. Even levels lower than national standards affected heart and respiratory illnesses. Mon, 22 Feb 2021 08:26:22 EST //www.koonmotors.com/releases/2021/02/210222082622.htm //www.koonmotors.com/releases/2021/02/210210133423.htm Global emissions of a potent substance notorious for depleting the Earth's ozone layer -- the protective barrier which absorbs the Sun's harmful UV rays -- have fallen rapidly and are now back on the decline, according to new research. Wed, 10 Feb 2021 13:34:23 EST //www.koonmotors.com/releases/2021/02/210210133423.htm //www.koonmotors.com/releases/2021/02/210205104243.htm Ozone is a problematic air pollutant that causes serious health problems. A newly developed material not only quickly and selectively indicates the presence of ozone, but also simultaneously renders the gas harmless. The porous '2-in-one systems' also function reliably in very humid air. Fri, 05 Feb 2021 10:42:43 EST //www.koonmotors.com/releases/2021/02/210205104243.htm //www.koonmotors.com/releases/2021/02/210203123451.htm Scientists show that under laboratory conditions, ultraviolet light reacts with nitrophenol to produce smog-generating nitrous acid. Wed, 03 Feb 2021 12:34:51 EST //www.koonmotors.com/releases/2021/02/210203123451.htm //www.koonmotors.com/releases/2021/01/210113144458.htm The first COVID-19 lockdowns led to significant changes in urban air pollution levels around the world, but the changes were smaller than expected, a new study reveals. Wed, 13 Jan 2021 14:44:58 EST //www.koonmotors.com/releases/2021/01/210113144458.htm