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MIT study says combustion emissions cause ~200,000 premature deaths/year in US; vehicles and power generation top sources

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Annual average concentrations of fine particulates from US sources of combustion emissions from (a) electric power generation; (b) industry; (c) commercial and residential sources; (d) road transportation; (e) marine transportation; (f) rail transportation; (g) sum of all combustion sources; (h) all sources. Source: MIT. Click to enlarge.

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Study finds in-car rush-hour exposure to some particulate pollution twice as high as previously thought

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A new study, part of the Atlanta Commuter Exposures (ACE) Study, has assessed on-roadway in-cabin particulate pollution (PM 2.5 ) collected from scripted rush hour commutes on highways and on non-highway side streets. Some drivers took highway routes while others stuck to busy thoroughfares in downtown Atlanta. Vreeland et al.

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Eaton says testing and use show its cylinder-deactivation technology can help commercial vehicle OEMs meet coming emissions regulations

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Eaton says it has shown in regulatory test cycles and real-world use that its cylinder-deactivation (CDA) technology can play a key role in helping commercial vehicle manufacturers meet or exceed 2024 and 2027 US emissions regulations. —Karl Sievertsen, chief technology officer, Eaton’s Vehicle Group.

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Study links air pollution to increased emergency department visits for heart and lung disease

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cities including Atlanta, GA; Birmingham, AL; Dallas, TX; Pittsburgh, PA; St. We found that primary pollutants—those that are emitted directly from a source, such as car exhaust—were associated with ED visits for cardiovascular and respiratory diseases. nitrogen oxides) and secondary (e.g. —Krall et al.

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First results from HEI/ACES murine study find few biologic effects from exposure to exhaust from new technology diesel engines

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The study—a component of the Advanced Collaborative Engine Study (ACES)—is exposing rats and mice for 16 hours a day to emissions from a heavy duty diesel engine meeting 2007 US EPA standards that reduce emissions of fine particles and other pollutants by more than 90% from levels emitted by older engines.

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Yale study finds that organic aerosols more complicated than previously thought

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Posing risks to health and climate, these airborne particles generally fall into two categories: Primary organic aerosols that can form during combustion, such as in car and truck exhaust, and secondary organic aerosols that result from oxidation of organic gases and particles in the air. —Jenna Ditto, a Ph.D. Ditto, Emily B.