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UB study finds link between ambient ozone exposure, artery wall thickness

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Long-term exposure to ambient ozone appears to accelerate arterial conditions that progress into cardiovascular disease and stroke, according to a new University at Buffalo study. Atherosclerosis refers to the build-up of plaque, or fatty deposits, in the artery walls, which, over time, restricts blood flow through the arteries.

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EPA proposes stringent new emissions standards for light-, medium-, heavy-duty vehicles for MY 2027 and beyond

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The US Environmental Protection Agency (EPA) announced two new proposed federal emissions standards spanning light-, medium- and heavy-duty vehicles for model year 2027 and beyond. Together, the proposals would reduce oil imports by approximately 20 billion barrels.

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Researchers suggest that air quality tests need simplifying to help reduce dangerous emissions

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New methods of testing and simulating air quality should be considered in order to help policy makers have a more accurate understanding of how emissions affect air pollution levels, new research suggests. We consider this to be a “bottom-up” approach,” says Stockwell.

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UNEP study: small number of measures targeting black carbon and tropospheric ozone could yield immediate climate benefits

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Global benefits from full implementation of the identified measures in 2030 compared to the reference scenario. Black carbon and tropospheric ozone are harmful air pollutants that also contribute to climate change. The climate change benefit is estimated for 2050 and human health and crop benefits are for 2030 and beyond.

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Fast action on black carbon, ozone and methane could help limit global temperature rise to 2 degrees C

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Global benefits from full implementation of the identified measures in 2030 compared to the reference scenario. Fast action on pollutants such as black carbon, ground-level ozone and methane may help limit near term global temperature rise and significantly increase the chances of keeping temperature rise below 2 °C (3.6 °F)—and

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International study identifies 14 key measures to reduce methane and black carbon emissions; reduction in projected global mean warming of ~0.5 °C by 2050

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National benefits of the CH 4 plus BC measures versus the reference scenario. Methane is both a potent greenhouse gas and an important precursor to ground-level ozone. Ozone, a key component of smog and also a greenhouse gas, damages crops and human health. Source: Shindell et al. Click to enlarge.

Carbon 257
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Report argues advanced HD natural gas vehicles foundational for California to hit air and climate goals; near zero-emission potential

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Five technology paths for very-low-NO x and GHG emissions from heavy-duty natural gas engines. The “Pathways to Near-Zero-Emission Natural Gas Heavy Duty Vehicles” report, authored by GNA on behalf of Southern California Gas Co. An 80% reduction of GHG emissions is targeted for 2050, relative to 1990 levels. Click to enlarge.

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