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Study: ozone levels higher across China than in other countries tracking the air pollutant

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In China, people breathe ozone-laden air two to six times more often than people in the United States, Europe, Japan, or South Korea, according to a new international study published in Environmental Science & Technology Letters. 2017 for one ozone metric. —Lin Zhang of Peking University, lead author.

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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Source: University of Leicester. Click to enlarge.

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New international study finds lab testing of diesel NOx emissions underestimates real-world levels by up to 50%

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Those markets include Australia; Brazil; Canada; China; the European Union; India; Japan; Mexico; Russia; South Korea; and the United States. Real-world NO x emission factors by vehicle emissions standard in key regions. Of these markets, they found vehicles emitted 13.2 million tons more than the 8.6

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MIT researchers improve upon methods to model urban air pollution

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These results were compared with observations of ozone, CO, formaldehyde, BC, and PM 10 from a few well observed urban areas, and in most of the cases, the output distributions were found to be within ranges of the observations. —Jason Cohen. Cohen, J.B.,

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ICCT report finds global implementation of advanced emissions and fuel-quality regs could cut early deaths from vehicle emissions by 75% in 2030

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For countries that are still far from reaching the Euro 6/VI equivalent standard, an interim policy target of Euro 4/IV-equivalent standards and 50 ppm sulfur fuel is a reasonable goal that provides substantial benefits, the authors suggest. micrometers or less (PM 2.5 ). —Chambliss et al.

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