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CARB approves new requirements to further reduce air pollution from Transport Refrigeration Units

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The California Air Resources Board (CARB) approved amendments to its current rule for Transport Refrigeration Units (TRUs) operating in the state. The 2022 amendments will require a variety of actions designed to reduce the pollution these units produce, and accelerate their transition to zero-emission technologies.

Pollution 259
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Study finds damage due to premature mortality from PM2.5 decreased >20% from 2008 to 2014

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related damages, researchers from Carnegie Mellon University and Stanford have found that, US-economy-wide, gross external damage (GED) due to premature mortality has decreased by more than 20% from 2008 to 2014. Indeed, farms have become the largest contributor to air pollution damages from PM2.5 related emissions.

2008 223
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Study concludes environmental regulations drove steep declines in US factory pollution even with increased production

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The federal Clean Air Act and associated environmental regulations have driven steep declines in air pollution emissions over the past several decades, even as US manufacturers increased production, according to a study by two University of California, Berkeley, economists. —Reed Walker.

Pollution 199
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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. Maybe this unintended experiment could be used to understand better the emission regulations.

Ozone 291
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Swiss study finds that studies on air pollution that ignore impact of noise overestimate effects of pollution on heart attacks

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Air pollution and transportation noise are both associated with an increased risk of heart attacks. However, studies on air pollution which do not take into account traffic noise tend to overestimate the long-term effect of air pollution on heart attacks, according to a study conducted by the Swiss Tropical and Public Health Institute.

Pollution 236
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EPA to develop options to reduce NOx and PM from locomotives further

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The US Environmental Protection Agency (EPA) is responding to petitions from the California Air Resources Board, the San Joaquin Valley Air Pollution Control District, and the California Air Pollution Control Officers Association to address harmful nitrogen oxide (NO x ) and particulate matter (PM) emissions from locomotives.

EPA 305
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California Air Resources Board posts revised draft of strategy to reduce “Super Pollutants”

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The California Air Resources Board (CARB) has posted a revised draft of California’s proposed Short-Lived Climate Pollutant (SLCP) Strategy. SLCPs are a category of pollutants which remain in the atmosphere for a relatively brief period, but have global warming potentials that are much higher than those of CO 2. Black carbon.

Pollution 150