Articles tagged with Air Quality
Research finds that the Arctic warming is causing a decline in dust levels across India, the Persian Gulf Coast, and the Middle East. The study suggests that addressing dust reduction should be done in tandem with efforts to curb emissions and mitigate climate change.
A study modeling Siberian wildfires' effects found significant impacts on air quality, climate, health, and economies in East Asia. The research suggests a cooling effect globally and worsened air quality in downwind regions.
Researchers from USP produced maps showing areas of highest air pollution concentration and peak emissions periods; bus drivers have higher exposure levels than car or subway users. The study also found that green spaces have the best air quality, while high-rise buildings negatively affect dispersion.
A new Illinois study reveals that countries with high production levels emit more air pollutants due to domestic and foreign demand. The researchers found a significant increase in carbon monoxide emissions from China to South Korea, emphasizing the need for global cooperation to address pollution.
A Bay Area monitoring network has recorded a small but steady decrease in CO2 emissions, primarily due to the adoption of electric vehicles, which translates to a yearly drop in vehicle emission rates. However, to meet California's ambitious carbon reduction goals, the yearly decrease needs to be much greater.
Researchers discovered that good airflow and filtration in schools can significantly reduce COVID-19 infections among children with intellectual and developmental disabilities. The study found that classrooms with high-efficiency air filters had lower infection rates, highlighting the importance of improved ventilation systems.
Researchers emphasize the importance of regulating indoor pollutants to prevent diseases and reduce the risk of spreading pathogens. Effective ventilation solutions are crucial in improving indoor air quality, and governments must take action to enforce standards.
International experts, led by Professor Lidia Morawska, recommend setting standards for ventilation rate and three key indoor pollutants to improve indoor air quality. The recommended standards could help minimize the spread of airborne diseases like COVID-19 and contribute to achieving the United Nations' Sustainable Development Goals.
The experts recommend setting standards for carbon dioxide, carbon monoxide, PM2.5, and ventilation rate to ensure adequate indoor air quality in public spaces. A CO2 concentration level of 800ppm is proposed with a focus on removing and diluting human-emitted pollutants.
A study found open waste burning increases health risks to a remote Arctic community due to high levels of particulate matter (PM2.5) pollution. Continuous air quality monitoring is crucial for protecting public health, particularly in the Arctic region.
A study found significant decreases in average nitrogen dioxide concentrations and social inequities in California's air pollution during the COVID-19 pandemic lockdown. Non-urban areas saw a 17% decrease, while urban areas experienced a 50% reduction, primarily due to reduced traffic.
The study found that the improvement in air quality has led to a significant reduction in fine particles and nitrogen oxides, resulting in large health gains. Despite improvements, many residents are still exposed to high levels of air pollution, highlighting the need for continued efforts to reduce emissions.
The air quality around new schools in England is alarming, with 86% of sites exceeding World Health Organization targets for major pollutants. Children are particularly vulnerable to the harmful effects of air pollution due to their developing bodies and organs.
A study reveals significant improvements in European air quality over the last two decades, with declining levels of PM10 and NO2. However, 98.10% of the population lives in areas exceeding WHO recommended levels for PM2.5, leading to 86.34% experiencing unclean air days annually.
A new study from the University of Surrey found that combining air purifiers with scheduled window openings can significantly improve classroom air quality. The study showed that coarse particle pollution fell by up to 36% and carbon dioxide levels decreased by up to 28%.
A new study quantifies the significant health impacts of oil and gas flaring in the US, resulting in over 700 premature deaths and 73,000 asthma exacerbations annually. The research highlights the need for stronger controls on emissions from this sector to improve public health and mitigate climate change.
A new hybrid deep learning model accurately measures air pollutants like PM2.5 and PM10, day or night, transforming air pollution understanding and management.
A Texas A&M professor will lead a team in evaluating the distribution and potential hazard of volatile organic compounds (VOCs) in East Palestine, Ohio, using a mobile platform. The research aims to inform response methods to measuring air quality following environmental disasters.
Researchers found that Indigenous communities in California were exposed to 1.7 times more wildfire smoke than expected, with the average annual exposure being a critical factor in understanding long-term health effects. The study proposes new metrics to measure cumulative exposure and duration of smoke exposure.
Researchers found a causal link between air pollution and suicide rates in China, estimating that reducing air pollution has prevented 46,000 deaths. The study isolated the effect of pollution on mental health by using weather conditions to tease apart confounding factors.
A new study by Purdue University finds that cooking on a gas stove can emit more nanocluster aerosol into the air than vehicles running on gas or diesel. This tiny particle pollution could increase the risk of developing asthma and other respiratory illnesses, especially for children.
A new portable sensor has been found to accurately measure black carbon concentrations as well as a regulatory standard sensor, filling a massive gap in air quality monitoring. The sensor's portability and affordability make it suitable for remote or inaccessible sites, allowing for more comprehensive data collection.
Two large US studies link short-term exposure to fine particulate matter (PM2.5) air pollution to increased risk of hospital admission for major cardiovascular disease and respiratory disease. Exposure to PM2.5 accounts for an estimated 7.6% of total global mortality, with no safe threshold found for heart and lung health.
A new study found that communities of color in Denver are exposed to higher levels of air pollution due to historical redlining practices. The study used satellite images and historical data to measure pollution throughout the city, revealing a correlation between pollution and race.
A new study found that chronic exposure to PM2.5 is associated with increased risk of hospital admission for various cardiovascular conditions, particularly ischemic heart disease and cerebrovascular disease. The study suggests that lowering annual average PM2.5 levels could decrease overall cardiovascular hospitalizations by 15%.
A UK study using mandatory annual vehicle inspections found exported used vehicles generated at least 13-53% more carbon dioxide per mile than those on British roads or in scrap yards. The researchers called for the UK's world-leading vehicle emissions standards to be applied to all exported vehicles.
A new study by researchers at UNC-Chapel Hill found that the chemical composition of US air pollution has changed over time. The analysis of space and time trends for fine particulate matter (PM2.5) in the continental US suggests targeted strategies to reduce specific pollutants for different regions can further reduce total air pollut...
Researchers developed sensors using aerogels to detect formaldehyde, a common indoor air pollutant, with real-time detection capabilities. The sensors require minimal power and can distinguish between different gases.
Researchers found that commercial cleaning products deposit a wide range of compounds on cleaned surfaces, which can impact indoor air quality. The study suggests that these residues should be studied in more detail to understand their effects on film growth and behavior.
A University of Washington team discovered that nitrate radicals in the air degrade scent chemicals released by wildflowers, making them undetectable to nighttime pollinators. The researchers found that pollution likely has worldwide impacts on pollination, with areas including western North America and Europe most affected.
New research reveals that 'green' cleaning products are no safer than regular ones, emitting volatile organic compounds that can harm indoor air quality. Manufacturers must provide clearer information on product ingredients and mitigation strategies to reduce harm.
A Chinese Medical Journal study examined the spatiotemporal features of disease burden due to air pollution across China between 2005 and 2017. The findings revealed a downward trend in premature mortality from fine particulate matter (PM2.5) and ozone (O3) pollution, but an increasing financial burden due to economic growth.
A recent study by Curtin University found that 1454 avoidable deaths occurred due to fine particle air pollution from extreme events like bushfires and dust storms. The research suggests nearly one-third of these deaths could be prevented if pollution events were reduced by 5 per cent.
A University of Surrey review concludes that Delhi needs help from its rural neighbors to clean up its killer smog problem. The study recommends identifying the wider area where a city's pollution is produced and working together with neighboring areas to tackle air pollution, with huge health implications for Indian cities.
A new study by the University of Technology Sydney suggests that office air conditioning can reduce the risk of harm from wildfire smoke. The researchers found that air conditioning filters in UTS Buildings 4 and 7 captured a significant portion of wildfire smoke, reducing exposure to toxic particles for staff and students.
Researchers from the University of Surrey created a new way to monitor air quality in real-time, empowering communities to take action. The study found that large gatherings and outdoor pollution can worsen indoor air quality, but knowledge is power. Public awareness campaigns led to tips on improving ventilation in homes and workplaces.
Researchers found that evergreen trees with smaller leaves, particularly those with awl-shaped leaves like Yew and Japanese cedar, were most effective at catching particles of pollution. In contrast, the study showed that the size and shape of the leaf, rather than its roughness or hairiness, was key to removing pollutants.
A comprehensive approach has been developed to create Hainan's own ambient air quality standards, tailored to the province's specific conditions. The new standards aim to reduce common pollutants and improve health outcomes, with estimates suggesting thousands of premature deaths could be prevented annually.
Researchers from Fordham University partnered with Bronx schools to collect real-time air quality data through a citizen science project. The study highlighted the disproportionate impact of pollution on low-income communities and inspired students to develop an interest in science.
Researchers found that live Christmas trees emit monoterpenes, which can react with ozone and form new compounds like formaldehyde. The concentration of VOCs decreases over time, but can still impact people sensitive to them.
Researchers in Chile developed a prototype using microorganisms to remove VOCs and PAHs from indoor air, achieving efficiencies above 90%. The system can operate for 8 months without losing efficiency. This breakthrough offers a potentially low-cost solution to improve indoor air quality.
Air quality in São Paulo fell far below standards and WHO recommendations despite reduced emissions during the pandemic. The study identified four main sources of aerosols: heavy vehicles, soil dust, light vehicles, and local sources, including industrial emissions and fires.
Research shows DFW air quality continues to exceed EPA safety levels, primarily due to auto emissions from Dallas County, affecting both counties. The study's findings highlight the need for improved transportation systems and stricter regulations to mitigate poor air quality.
Purdue University researchers discovered that hair care products release potentially harmful chemicals into the air during use, with decamethylcyclopentasiloxane (D5 siloxane) being the most concerning chemical. The study found that inhaling these chemicals can pose health risks to humans and has significant environmental implications.
A new study found that exposure to coal particulate air pollutants is associated with a mortality risk more than double that of exposure to PM2.5 from other sources. The researchers estimated that 460,000 deaths were attributable to coal PM2.5 in the US between 1999 and 2020.
In Canadian First Nations houses in remote northern communities, researchers found strikingly high levels of CO2, mold damage, and endotoxins. These findings could explain the high rates of respiratory illness in these areas.
A study published in Advances in Atmospheric Sciences found that record-setting Canadian wildfires had a significant impact on air quality across the Northern Hemisphere. The research used numerical air quality models to simulate the dispersal of pollutants from the fires, revealing widespread effects beyond Canada and the US.
Yu Yang's NSF-funded research aims to reduce vehicle emissions and promote the use of electric bikes and scooters by developing socially informed traffic signal control systems. The project involves a three-pronged method that uses low-cost mobile air-quality sensing, spatial-temporal graph diffusion learning, and reinforcement learnin...
A new report highlights Africa's deteriorating air quality, with particulate matter concentration levels five to ten times the World Health Organisation's recommended level. The researchers call for collective efforts, regionally tailored solutions, and global collaboration to tackle this issue.
Research highlights short-term increases in fine particulate air pollution associated with increased health care visits for heart attacks and unstable chest pain. The risk for each cardiac event differs by season, with summer wildfires causing immediate hospitalization needs for chest pain but delayed action for heart attacks.
A new study finds that compressor stations emit pollutants like particulates and VOCs, impacting nearby community health. Continuous air quality monitoring, stricter standards, and community-specific assessments are recommended to protect vulnerable populations.
New research from MIT found that germicidal UV lights can produce potentially harmful compounds in indoor spaces. The study suggests that the lights should be used with appropriate ventilation to minimize health risks. Researchers emphasize that the new UV lights are not a replacement for ventilation but rather a complement to it.
Research from Colorado State University shows wildfire smoke can attach to home surfaces like carpet and drapes, extending exposure and potentially causing health problems. Simple surface cleaning, such as vacuuming or mopping, can reduce exposure and limit risk.
The study identifies 34 pathways that reduce greenhouse gases or specific air pollutants, while 13 increase harmful emissions. Effective uses of biomass include combustion for renewable energy, biodiesel production, and biogas conversion. Conversely, bad pathways include wildfires, open composting, and burning forest material.
A study using Google Street View cars found hyper-local air pollution hotspots in the Salt Lake Valley, revealing spatial variability and environmental justice issues. The research identified pollution emission sources off-road from traffic and industrial areas.
A new approach reduces computational demands by 84% and enables daily estimation of emissions for major pollutants in urban areas. This leads to a notable 7.1% reduction in root mean square errors in 7-day PM2.5 forecasts, contributing to healthier air for all.
A new study by Northwestern University found that Chicago's West Side experiences significantly elevated nitrogen dioxide (NO2) air pollution compared to other areas. The study used three state-of-the-art datasets and consistently identified the West Side as a hotspot in both February and August, affecting approximately 501,000 people
Climate change exacerbates cardiovascular disease through poor air quality and extreme temperatures, according to a special issue of the Canadian Journal of Cardiology. Experts review environmental influences, exposures, and practical tips for healthcare providers to mitigate these effects.
Replacing combustion engines with electric vehicles in Chicago would significantly reduce air pollution, especially in predominantly Black, Hispanic, and Latinx neighborhoods. The study found that electrification of all on-road vehicles could save over 1,000 lives and $10 billion annually.
A University of Houston study found that most of Houston's ozone exceedance is due to transported pollutants from the central and northern US, while local photochemistry contributes to elevated ozone production. The research highlights the importance of reducing emissions at the Houston Ship Channel to mitigate future ozone pollution.