For decades, the United States made steady progress in reducing surface ozone pollution, the main ingredient in smog. But ...

New modeling research shows aerosol-related HONO sources strongly amplify SOA and PAN formation across China BOSTON, ...

For decades, Southern California’s war on smog has focused on strategies to reduce pollution from tailpipes and smokestacks. But one of the main drivers of lung-aggravating smog may be right ...

The element mercury (Hg) is a unique metal that is liquid at ambient conditions, and easily volatilized to the atmosphere, where it is distributed on a global scale. This environmental contaminant ...

Nitrate pollution has become one of the most widespread water quality challenges in intensively farmed regions around the world, threatening drinking water safety, aquatic ecosystems, and downstream ...

While residents living in north Denver and Commerce City know they’re often breathing dirty air, the large number of industrial businesses and highways in the area can make it difficult to pinpoint ...

Analysing the diversity of organic compounds dissolved in freshwater provides a reliable measure of ecosystem health, say scientists. The source of pollutants in rivers and freshwater lakes can now be ...

Air pollution does not have to exceed federal limits to potentially harm human health, according to a new published study ...

Unlike most other pollutants, particulate matter (PM) cannot be characterized by the space- and time-variations of the mass concentrations of a single compound. Important factors influencing PM ...