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Study finds significant slowdown in decrease of NOx emissions in US; implications for air quality management

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They found that levels of pollutants that can contribute to the formation of ground-level ozone, or smog, have failed to continue a fairly steady decline as estimated by the US Environmental Protection Agency. These results show that meeting future air quality standards for ozone pollution will be more challenging than previously thought.

Emissions 150
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UK Awards 1.6M to Project Investigating Stratospheric Particle Injection for Climate Engineering

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A 2009 evaluation of geoengineering techniques by the Royal Society concluded that stratospheric aerosols could be highly effective and affordable, although there are questions over adverse effects. From: Geoengineering the Climate (2009) Click to enlarge. Earlier post.). Evaluating candidate particles.

Climate 199
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National Academies report finds EPA’s controlled human exposure studies of air pollution are warranted

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Results from CHIE studies are used to inform the periodic review of National Ambient Air Quality Standards (NAAQS) for common pollutants, such as ozone and particulate matter (PM), and advise other policy decisions. 2009 to Oct. Out of the 845 intentional pollutant exposures conducted at EPA’s study facility from Jan.

Pollution 150
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NC State Researchers Developing Ozonolysis Pretreatment for Energy Grass Feedstocks

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Researchers at North Carolina State University are developing an ozone-based pre-treatment technique (ozonolysis) to release sugars from the energy grass miscanthus for production into renewable fuels or chemicals with minimal generation of chemical waste streams and degradation of the carbohydrate components. García-Cubero et al.

Ozone 170
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Imaging study: air pollution impairs function of blood vessels in lungs

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Between 2009 and 2013, transthoracic echocardiography including an evaluation of pulmonary pressure was conducted in 16,295 individuals and correlated with average air pollution in Brussels on the same day and in the last five and ten days. and ozone on pulmonary circulation on the same day and over five and ten days. Argacha.

Pollution 150
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National Academies release third review of the 21st Century Truck Partnership

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While early R&D was largely component-based, as a result of US Department of Energy (DOE) American Recovery and Reinvestment Act (ARRA) funds in 2009, 21CTP was able to fund four SuperTruck projects. These projects have brought together a wide variety of companies, the national laboratories, and universities. The 50% BTE and the 4.85

MPG 150
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Study Finds Environmental and Tailpipe Pollutants Benefits in Using Biodiesel in Construction Vehicles

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Using biodiesel in construction vehicles offers promising environmental benefits in terms of reduced tailpipe emissions as well as reductions in fuel cycle emissions of selected pollutants, according to a new study by researchers at North Carolina State University. ozone, PM) problems may be less pressing. Pang et al. Shih-Hao Pang, H.

Pollution 150