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Study shows two-stroke scooters dominant source of air pollution in many cities; asymmetric polluters

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A study by European researchers has found that two-stroke (2S) scooters, although constituting a small fraction of the fleet, can dominate urban vehicular pollution through organic aerosol and aromatic emission factors up to thousands of times higher than from other vehicle classes. Emission factors (EFs) from scooters and other vehicles.

Pollution 362
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Air pollutant emission 2010 limits exceeded in twelve EU Member States; road transport NOx a main factor

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For the first time, preliminary data recently reported to the EEA by Member States allow a comparison with the legally binding emission limits for 2010 set in the EU NEC Directive. These pollutants can cause respiratory problems, contribute to the acidification of soil and surface water, and damage vegetation. Jacqueline McGlade.

Pollution 309
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Emissions of Air Pollutants down in EU-27

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The European Community’s air pollutant emission inventory report released by the European Environment Agency finds that in 2007, sulphur oxides (SO x ) emissions were down by 72 % from 1990 levels. EU-27 emissions of all four pollutants were lower in 2007 than in 2006.

Pollution 236
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Studies find global COVID-19 lockdowns have significantly reduced PM2.5 and NO2 pollution, but ozone up

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Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. For comparison, columns over the same time periods are shown for 2019.

Ozone 291
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Study finds air pollution and noise pollution each increase cardiovascular risk

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Both fine-particle air pollution and noise pollution may increase a person’s risk of developing cardiovascular disease, according to German researchers who have conducted a large population study, in which both factors were considered simultaneously. —Barbara Hoffmann, MD, MPH, study leader. 32.8%) per 2.4µg/m 3. (As

Pollution 199
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Microplastics in Arctic snow suggest widespread air pollution

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The high concentrations found in snow samples from disparate regions suggest microplastics—which may contain varnish, rubber, or chemicals used in synthetic fabrics—cause significant air pollution. For comparison, the researchers investigated samples from the remote Swiss Alps and the City of Bremen in northwest Germany.

Pollution 223
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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. Despite this, research on the environmental and health impacts of tire wear has been neglected in comparison to the research and innovations dedicated to tackling fuel emissions.

Pollution 243