California agency approves warehouse rule for air quality

Southern California air quality regulators on Friday approved a rule that would curb diesel emissions from thousands of trucks that ferry goods from the growing number of massive warehouses in the region run by Amazon and ...

A fundamental shortcoming in air pollution models

Researchers from the University of Copenhagen have discovered a surprising phenomenon in a process by which certain gas molecules produce harmful particles. The impact of this phenomenon is likely to increase in urban areas ...

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