Fresno, California and the surrounding San Joaquin Valley have some of the nation’s highest levels of fine particle air pollution.
AP Photo/Gary Kazanjian
A new study shows that while fine particle air pollution has declined nationwide over the past 40 years, the health and environmental benefits haven't been shared evenly.
Clear skies over Los Angeles, April 17, 2020.
Araya Diaz/Getty Images
From Nairobi to Los Angeles, pandemic lockdowns have cleared pollution from the skies. But those blue vistas may be temporary, and shutdowns aren't slowing climate change.
Diesel emissions are a major source of fine particle pollution.
Bob Chamberlin/Getty Images
After a 5-year review, the EPA is leaving US standards for fine particle air pollution unchanged, even though recent studies suggest that tightening them could save thousands of lives yearly.
Reducing fine particle air pollution from petrochemical complexes, like this one near the Houston Ship Channel in Texas, is a low-cost way to lower air pollution mortality.
AP Photo/David J. Phillip
A new study takes an innovative approach to reducing fine particle air pollution and spotlights key sources: factories that burn coal and oil, petrochemical plants and burning wood for home heating.
Smoke covers a street market in Palermo, Italy. October 8 2019.
Pollutants like nitrogen dioxide are a silent killer, but everyone isn't equally at risk.
Vehicles are a major source of particulate air pollution.
Scientists who were appointed to advise the EPA on air pollution kept meeting independently after the agency dissolved their panel. They say current regulations aren't strict enough.
Leaving your car running will marginally increase CO2 emissions, but it may massively reduce exposure to the toxic gases and particulates that are shortening thousands of lives.
Oil refineries and other industrial sources in and around Houston create some of the highest ozone levels in the nation.
AP Photo/Pat Sullivan
Air quality in the US has improved greatly since 1990, but a new report finds progress stalling in some cities. Meanwhile, the Trump administration is rolling back air pollution controls.
Fine particle pollution in Denver exceeded federal health standards on March 6, 2019, triggering a citywide alert.
AP Photo/David Zalubowski
Are health risks from air pollution less serious than we think? Mainstream scientists call this a fringe view, but it's getting high-level attention at the Environmental Protection Agency.
Wood smoke may smell good, but it is not good for you.
The smoke from wood-burning stoves and fireplaces contributes to air pollution and poor health.
Industrial facilities like this oil refinery in Anacortes, Washington are significant air pollution sources.
An air pollution expert with years of experience advising federal regulators describes how the Trump administration is speeding up reviews and reducing scientific input.
An image from the International Space Station captures plumes of smoke from California wildfires on August 4, 2018.
Haze from Northern California wildfires has drifted as far east as Philadelphia. Wildfire smoke contains many potentially toxic substances, so anyone exposed to it should take basic precautions.
A Kosovo policeman directs cars in Pristina after the government banned traffic in response to extremely high fine particle pollution levels, Jan. 31, 2018.
AP Photo/Visar Kryeziu
The head of the World Health Organization calls air pollution 'the new tobacco' because it causes millions of preventable deaths yearly. Fine particle pollution is especially deadly.
John Williams RUS/Shutterstock.
London's low emission zone has started to reduce air pollution – but not enough to protect children's lungs.
The Big Brown coal plant in Fairfield is among the Texas power stations that have been shut down.
AP Photo/David J. Phillip
A study of the social cost of carbon emitted by the shrinking fleet of Texan coal plants suggests that closing more of them down would be good for the climate and public health.
Smog alert in Cleveland, Ohio, July 20, 1973.
EPA Administrator Scott Pruitt wants to change the grounds for setting US air pollution targets. An environmental lawyer explains why Pruitt's approach misreads the law and could roll back decades of gains.
The landmark Harvard Six Cities study found a strong link between air pollution and health risks.
The EPA intends to limit what scientific studies can inform policy – a change long sought by industry. A long-time public health researcher explains the single study at the root of the controversy.
Free public transport could be one way to get more people to ditch the car.
What can you do to ensure a more perfect brew?
The science behind why what your barista achieves at the cafe tastes better than what you can come up with at home.
Coal stockpile at a Milwaukee, Wisconsin power plant, 2011.
A recent study shows that large piles of coal produce measurable quantities of fine particulate air pollution within a 25-mile radius. Covering coal trains and storage piles could reduce the problem.