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HEI ACES study of lifetime animal exposure to New Technology Diesel Engine exhaust finds no lung cancer

Green Car Congress

The first study to conduct a comprehensive evaluation of lifetime exposure to new technology diesel exhaust (NTDE)—i.e., exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. This phase was conducted at SwRI in 2012.

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Study estimates ~4M children worldwide develop asthma each year because of NO2 air pollution

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NO 2 is just one component of air pollution, which is made up of many pollutants (including particulate matter, ozone, carbon monoxide), which are known to have numerous adverse effects on health. NO 2 is a pollutant formed mainly from fossil fuel combustion, and traffic emissions can contribute up to 80% of ambient NO 2 in cities.

Pollution 360
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Why Electric Buses Are the Healthy School Choice

Blink Charging

Many school districts use diesel buses for fuel efficiency, but even diesel exhaust was classified as a known carcinogen to humans in 2012.

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Harvard team finds that the phase of atmospheric secondary organic material affects chemical aging; may require revision of regional and global climate models

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In a liquid phase, the organic materials would absorb other compounds such as ammonia or ozone very easily and then progress through a series of chemical changes (known as chemical aging) to form particles that reflect or absorb sunlight, or form clouds. The experiments at Harvard, using particles of ? In the atmosphere, the particles of ?-pinene

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PNNL team finds correlation between reaction mechanism for zeolite SCR catalyst for NOx aftertreatment and bacterial enzyme catalysis

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Recently, researchers have produced a new zeolite that is surprisingly stable and makes very little nitrous oxide from nitric oxide, a chemical that depletes ozone. 2012) Cu-SSZ-13 Catalysts for the Selective Catalytic Reduction of NO x with NH 3 : Catalyst Characterization and Reaction Mechanisms (12 AIChE meeting). Feng Gao et al.

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California ARB Seeks Further Reductions of Diesel Emissions at State Rail Yards

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The top set of recommendations call for: Replacing existing switch and medium horsepower locomotives with cleaner locomotives (2010-2013); Retrofitting switch and medium horsepower locomotive with particulate matter and oxides of nitrogen (NO x ) after-treatment devices (2012-2016); and. NO x helps create ground-level ozone, or smog.

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

Green Car Congress

The National Academies have released a third review of the 21 st Century Truck Partnership (21CTP); the review follows the Phase 1 and Phase 2 reviews by the National Research Council in 2008 and 2012 ( earlier post ) and assesses the progress the partnership has made. These new targets need to be set for the research efforts.

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