(AP)—The Obama administration on Friday imposed a new air quality standard that reduces by 20 percent the maximum amount of soot released into the air from smokestacks, diesel trucks and other sources of pollution in its ...
Environment
Dec 14, 2012
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(Phys.org)—Are gasoline-fueled cars or large diesel trucks the bigger source of secondary organic aerosol (SOA), a major component of smog? UC Berkeley researchers have stepped into this debate with a new study that says ...
Environment
Oct 22, 2012
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New research from North Carolina State University shows that federal requirements governing diesel engines of new tractor trailer trucks have resulted in major cuts in emissions of particulate matter (PM) and nitrogen oxides ...
Engineering
Apr 16, 2012
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The 53-foot-long tractor trailer that houses UC Riverside's mobile emissions laboratory was back on the road Friday and Monday on Interstate 10 between Redlands and Beaumont testing ways to better measure particulates from ...
Environment
Aug 3, 2010
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(AP) -- Pedaling placidly, black-suited businessmen and women in dresses and high heels wheel shiny red bikes between growling green buses, serenaded by shrill police whistles and coughing diesel trucks, the morning sunlight ...
Environment
Apr 22, 2010
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Dear EarthTalk: I don't understand why there are many European diesel cars with very high mileage ratings that are not available in the U.S. Can you enlighten? (John Healy, Fairfield, Conn.)
Environment
Apr 27, 2009
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