"Air pollution from cars, trucks and buses in California disproportionately affects Latino and African-American residents, according to a new study.
The Union of Concerned Scientists found that exposure to particulate matter (PM2.5) for those groups is roughly 40 percent higher because of where they live. Income also matters: The study said the lowest-earning California households, or those making less than $20,000 annually, are exposed to 25 percent more particulate pollution than households that earn more than $200,000 per year.
'Residents in the communities most affected have known for generations there was a disproportionate amount of air pollution in their neighborhoods,' said David Reichmuth, a senior engineer at UCS and author of the analysis. 'This modeling allows us to quantify the extent of the disparity across the state.'"