Air quality, as a phenomenon, refers to the physicochemical state of the atmosphere with respect to the presence, concentration, and reactivity of gaseous and particulate constituents, including criteria pollutants (e.g., ozone, nitrogen oxides, sulfur dioxide, carbon monoxide, particulate matter) and numerous hazardous air pollutants. It emerges from dynamic interactions among emission sources, atmospheric transport, dispersion, chemical transformation, and removal processes such as deposition and scavenging. Quantification of air quality relies on continuous or episodic monitoring, expressed through pollutant concentrations and composite indices, and is central to studying atmospheric chemistry, exposure assessment, and the impacts of atmospheric composition on biological, ecological, and material systems.
Researchers at North Carolina State University have shown a link between the size of cockroach home infestations and the levels of both allergens and endotoxins in those homes, with lowering roach infestation numbers through ...
Environment
Oct 25, 2025
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People living, working and visiting London have seen substantial reductions in air pollution following the introduction of the Ultra Low Emissions Zone (ULEZ) introduced in 2019, according to a new research paper.
Environment
Oct 22, 2025
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The new Copernicus Sentinel-4 mission has delivered its first images, highlighting concentrations of atmospheric nitrogen dioxide, sulfur dioxide and ozone. Despite being preliminary, these images mark a major milestone in ...
Planetary Sciences
Oct 21, 2025
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India's capital New Delhi was shrouded in a thick, toxic haze on Monday as air pollution levels soared to more than 16 times the World Health Organization's recommended daily maximum.
Environment
Oct 20, 2025
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In a recent study published in the journal Biogeosciences, scientists have confirmed that mercury pollution from artisanal and small-scale gold mining (ASGM) is contaminating food crops not through the soil, as previously ...
Ecology
Oct 20, 2025
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158
Pollution levels in India's capital shaped Natasha Uppal and her husband's decision on parenthood—either raise their child away from the city, or stay put and remain childless.
Environment
Oct 16, 2025
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POSTECH (Pohang University of Science and Technology) Professor Hyung Joo Lee's research team, including integrated program students Min Young Shin and Na Rae Kim, has published the results of a study analyzing how the combined ...
Earth Sciences
Oct 15, 2025
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17
The "State of Indoor Air in Australia 2025" report, led by QUT's ARC Training Center for Advanced Building Systems Against Airborne Infection Transmission (THRIVE), highlights the health, well-being and economic risks posed ...
Environment
Oct 14, 2025
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A study carried out by researchers at the Center for Physical Sciences and Technology (FTMC) revealed that 37% of primary and secondary schools in Vilnius, the capital of Lithuania, are exposed to harmful air pollutants due ...
Environment
Oct 8, 2025
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20
Urban trees are essential to the health of cities and their residents: they cool neighborhoods, filter pollution from the air, support biodiversity, and improve human well-being. But these benefits depend in part on the tree ...
Ecology
Oct 6, 2025
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