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Ultrafine particles in the atmosphere are unregulated, according to the World Health Organization, but a team of international researchers that includes a Texas A&M University professor and two graduate students has found that auto emissions are a key factor in the creation of the particles, and pose a significant health problem in many urban areas.
Renyi Zhang, Texas A&M distinguished professor of atmospheric sciences and the Harold J. Haynes Chair in Geosciences, and colleagues from the University of Texas at Austin, the University of California-San Diego, the California Institute of Technology, Johns Hopkins University and several Chinese universities have published their work in the latest issue of the Proceedings of the National Academy of Sciences.
The team studied auto emissions relevant to urban areas, especially Beijing, which has some…
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