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New study examines commuter characteristics and traffic pollution exposure among commuters

George Mason University faculty Jenna Krall studies commuter habits, such as departure time and commute length, and their associations with air pollution exposure

2021-07-19
(Press-News.org) The link between on-road traffic and air pollution is well-known, as are the negative health impacts of pollution exposure. However, the many factors that may influence commuters' exposure to pollutants - such as frequency, time, and duration of commute - and the overall impact of commuting remains a matter of on-going scientific discovery.

Dr. Jenna Krall, assistant professor at the George Mason University College of Health and Human Services, is using statistical methods to better understand exposure to air pollution. Krall studies how commuting patterns impact exposure to fine particulate matter (PM2.5) from various traffic-related sources such as tailpipe emissions, road salts, and brake wear.


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Angry politicians make angry voters, new study finds

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DNA duplication linked to the origin and evolution of pine trees and their relatives

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GAINESVILLE, Fla. --- Plants are DNA hoarders. Adhering to the maxim of never throwing anything out that might be useful later, they often duplicate their entire genome and hang on to the added genetic baggage. All those extra genes are then free to mutate and produce new physical traits, hastening the tempo of evolution. A new study shows that such duplication events have been vitally important throughout the evolutionary history of gymnosperms, a diverse group of seed plants that includes pines, cypresses, sequoias, ginkgos and cycads. Published today in Nature Plants, the research indicates that ...

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[Press-News.org] New study examines commuter characteristics and traffic pollution exposure among commuters
George Mason University faculty Jenna Krall studies commuter habits, such as departure time and commute length, and their associations with air pollution exposure