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Study finds changes in the Arctic sea ice cover may be driving changes in atmospheric chemistry

Green Car Congress

Bromine also can remove ozone from the lowest layer of the atmosphere, the troposphere. Despite ozone’s beneficial role blocking harmful radiation in the stratosphere, ground-level ozone is a harmful pollutant. Bromine then reacts with a gaseous form of mercury, turning it into a pollutant that falls to Earth’s surface.

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PNNL team finds correlation between reaction mechanism for zeolite SCR catalyst for NOx aftertreatment and bacterial enzyme catalysis

Green Car Congress

A paper on their work is published in the journal Angewandte Chemie International Edition. Although the catalyst is in use, exactly how it converts NO x to nitrogen and water with the help of ammonia (urea) hasn’t been entirely clear. The finding provides insight into how to make better catalytic converters. Burton, Andrew S.

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Researchers describe the “where” and “when” of life cycle emissions from gasoline and ethanol in the US

Green Car Congress

60% of ground-level ozone (O 3 ) precursors, 6% of fine particulate matter (PM 2.5 ), and 22% of greenhouse gases (GHGs) emitted. They excluded emissions occurring outside of the contiguous US and surrounding waters) from the results below. On-road transportation accounts for approximately 20% of United States energy consumption.

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COVID-19 Forced Us All to Experiment. What Have We Learned?

Cars That Think

As economists and social scientists, we draw two fundamental insights from these examples of forced experimentation. He convinced the authorities to remove the handle from the pump of a particular water source that had been implicated in the spread of the disease, thereby halting that spread.

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