Fine Particles

May 17, 2017, 11am PDT
While the study stems from research that found Volkswagen diesel cars had used 'defeat devices' to pass emissions tests, the new study points to inadequacies in the tests themselves, resulting in 50 percent higher pollution than testing permits.
The International Council on Clean Transportation
July 15, 2013, 7am PDT
A new study published in the journal Environmental Pollution makes the first conclusive case for the ability of urban foliage to reduce fine particle pollution, reducing breathing problems and saving lives in the process.
The Baltimore Sun