air pollution

Every month, USDA shares the story of a woman in agriculture who is leading the industry and helping other women succeed along the way. This month, we are proud to share the story of Sarah Jovan, a Research Ecologist with the U.S. Forest Service in Portland, Oregon. Sarah, along with her colleague Geoffrey H. Donovan, is a 2017 Finalist for the Promising Innovations Medal of the Samuel J. Heyman Service to America Medals (also known as the “Sammies”). Together, they led the first-ever study using tree moss to detect air pollution in a major city, including cancer-causing heavy metals, prompting enforcement actions and offering a new, cost-effective way to identify threats to public health. Read their full story.

In December 2013 when Sarah Jovan and Geoffrey Donovan, two scientists with the U.S. Forest Service’s Pacific Northwest Research Station in Portland, Oregon, crisscrossed the northwest area of their city they had no idea they were onto something big. Armed with a ladder and collection equipment, the two spent most of that gray and rainy month carefully plucking hundreds of moss samples off the trunks of the city’s hardwood trees.

They were in relatively uncharted scientific territory, though their research focus seemed straightforward enough: determine if moss, in particular, the ubiquitous Lyell’s orthotrichum moss which grows abundantly across much of the city, could help measure urban air pollution.

Smoke from wildfires can have an enormous impact on the public and on fire personnel, affecting health, interfering with transportation safety and upsetting tourism and local economies.

Trent Procter, like all U.S. Forest Service Air Resource Advisors, is a technical specialist with expertise in air quality science, including: air quality monitoring, smoke modeling, pollutant health thresholds and communicating about smoke risks and mitigation.

It’s Clean Air Month, and roadside trees are cleaning the air and helping us feel better.

If you live in an area where there’s a lot of people and traffic, air quality may have crossed your mind at one point or another—and rightly so. In recent years, the health of people living, working or going to school near roads with high traffic volume has been a quickly rising national concern. All over the world, studies are finding air pollution levels especially elevated in these areas.

A multidisciplinary group of researchers, planners and policymakers from the U.S. Environmental Protection Agency, U.S. Forest Service and other organizations found that strategically planting trees near busy roadways may significantly enhance air quality. Their findings were published last year in the Transportation Research Board magazine.