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Insight into benzene formation could help development of cleaner combustion engines

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The researchers say that their findings, recently published in an open-access paper in the journal Science Advances , are key to understanding how the universe evolved with the growth of carbon compounds. That insight could also help the car industry make cleaner combustion engines.

Cleaner 243
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Smartphones and sensors as personal, real-time pollution monitors

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Air pollution varies widely over the course of a day and by location, even within the same city. Now scientists, reporting in the ACS journal Environmental Science & Technology , have used smartphone and sensing technology better to pinpoint where and when pollution is at its worst. Nieuwenhuijsen et al. Nieuwenhuijsen et al.

Personal 150
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California Energy Commission awards Sierra Northern Railway team nearly $4M to demonstrate hydrogen switching locomotive; H2RAM

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The locomotive will show the potential of hydrogen fuel-cell technology to reduce transportation air pollutant and greenhouse gas (GHG) emissions. To build the locomotive and demonstrate its operations in a real-world environment. To support commercialization activities to expand the use of hydrogen in the rail sector.

Sierra 357
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Researchers present new explanation for the long-range transport of PAH pollutants

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When airborne particles (green) form before PAHs adhere, both the pollutants and particles dissipate quickly, as shown in the top row. But when the particles form in the presence of pollutants, which is what likely happens in nature, the longer-lasting particles enable the long-range transport of the pollutants (bottom).

Pollution 244
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Study finds megacity traffic soot can reach high altitudes and be transported over long distances, contributing to global warming

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An open-access paper on the work is published in the journal Atmospheric Environment. Long-term measurement data of the equivalent black carbon (eBC) mass concentrations and particle number size distributions (PNSD) from the Global Atmosphere Watch Observatory Chacaltaya (CHC; 5240?m

Bolivia 247
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Study: countries seeking to cut CO2 emissions must get a handle on city-level emissions

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Countries seeking to meet Paris Agreement targets on CO 2 emissions must get a grip on the amount of pollution produced at city level, according to a new open-access study published in S cience Advances by an international team of researchers from Europe and China. —Prof Guan. Yuli Shan, Dabo Guan, Klaus Hubacek, Bo Zheng, Steven J.

Emissions 210
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Black carbon is a much larger cause of climate change than previously assessed; about twice previous estimates, and 2/3 the effect of CO2

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Schematic overview of the primary black-carbon emission sources and the processes that control. the distribution of black carbon in the atmosphere and determine its role in the climate system. Accounting for all of the ways black carbon can affect climate, it is believed to have a warming effect of about 1.1 Source: Bond et al.