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Study finds coal trains add significant amount of PM2.5 pollution in urban areas

Green Car Congress

Coal trains and terminal operations add a significant amount of fine particulate matter (PM 2.5 ) pollution to urban areas—more so than other freight or passenger trains— according to a study conducted in Richmond, California, by the University of California, Davis. The results indicate coal trains add on average 8.32

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Yale study finds asphalt a significant source of air pollution, especially on hot, sunny days

Green Car Congress

A new study now finds that asphalt is a significant source of air pollutants in urban areas, especially on hot and sunny days. Yale researchers found that common road and roofing asphalts produced complex mixtures of organic compounds, including hazardous pollutants, in a range of typical temperature and solar conditions.

Pollution 337
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ICL briefing paper estimates that 52% of all small particle pollution from road transport comes from tires and brakes

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A new briefing paper from Imperial College London estimates that in 2021, 52% of all small particle pollution from road transport came from tires and brakes. Tire wear particles pollute the environment, the air we breathe, the water run-off from roads and has compounding effects on waterways and agriculture.

Pollution 243
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Study finds significant proportion of childhood asthma cases may be attributable to air pollution

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Findings of a study led by the Barcelona Institute for Global Health (ISGlobal) and published in the European Respiratory Journal suggest that a significant proportion of childhood asthma cases may be attributable to outdoor air pollution, and that these cases could be prevented. NO 2 ranged from 1.4 ranged from 2.0

Pollution 278
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York study: Less traffic in first UK lockdown reduced NO2 pollution but caused increase in surface ozone

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Less traffic on the roads during the first COVID-19 lockdown in the UK led to a reduction in air pollution but may have caused potentially damaging surface ozone levels to rise, according to a new study led by researchers at the University of York. The 25–75% range is shown by the shaded area. —Professor Lee.

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Study indicates warming Arctic is remobilizing persistent organic pollutants into the atmosphere

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A new study by researchers from Canada, Norway and China indicates that warming in the Arctic is revolatilizing persistent organic pollutants (POPs) that have accumulated in sinks such as water and ice. Their paper appears in the journal Nature Climate Change. —Ma et al. Nature Climate Change doi: 10.1038/nclimate1167.

Pollution 236
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Global study links daily exposure to ozone pollution to increased risk of death

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Ground level ozone is a highly reactive gas commonly found in urban and suburban environments, formed when pollutants react in sunlight. Current air quality thresholds (in micrograms per cubic meter of ambient air) range from 100 ?g/m g/m 3 (WHO), 120 ?g/m g/m 3 (European Union directive), 140 ?g/m Vicedo-Cabrera et al.

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