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Researchers say world faces air pollution pandemic

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Air pollution is responsible for shortening people’s lives worldwide on a scale far greater than wars and other forms of violence, parasitic and vector-born diseases such as malaria, HIV/AIDS and smoking, according to an open-access study published in Cardiovascular Research. Household air pollution is from the indoor use of solid biofuels.

Pollution 438
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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
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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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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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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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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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Carnegie study finds climate impact of particulates varies greatly depending on where the pollution originated

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However, aerosols have a much shorter lifespan in the atmosphere than the gases responsible for global warming, resulting in an atmospheric distribution that varies by region, especially in comparison to carbon dioxide. For example, aerosols from India cool their country of origin 20 times more than they cool the planet.

Climate 170