Common household products like cosmetics, paints, deodorants and cleaners may be a significant source of unhealthy pollutants in U.S. cities. According to a new study published today in the journal Science, chemicals released from these products create as much pollution in the form of ozone and particulate matter as burning fossil fuels.

The bottom line: Overall, air quality in the U.S. has improved due to strict regulations on emissions from cars. And, at the same time, the amount and proportion of other pollutants from consumer products has increased. Addressing that remaining source could further improve human health, according to some experts.

“The main message is that the important sources of air pollution in urban areas are changing. Historically, it was dominated by motor vehicles and over time there has been major success in controlling that source. As a result, other sources are more prominent now as a fraction of the overall problem.”
— Robert Harley, University of California, Berkeley

What’s new: Air pollution measurements have long focused on gasoline-related hydrocarbons. It can be difficult […]

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