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.
The evidence that living near exhaust stacks from busy tunnels harms your lungs is far from settled.
As the latest controversy about tunnel exhaust stacks and respiratory health plays out in the media, some community members are proposing solutions that just don't make sense.
Want cleaner air? Stop leaving your car engine running while you’re stopped at lights or waiting for a passenger, and demand better regulations from the government.
AAP Image/Dean Lewins
Australia needs stronger policy aimed at curbing air pollution, but the options currently on the table fall short. For now, we could all aim to drive less and turn off the engine when the car is idle.
Face masks like these, modeled by students from the Peltier Aerosol Lab, vary widely in effectiveness against fine particle pollution.
Richard E. Peltier
Inexpensive cloth face masks, worn by many people in heavily polluted countries, offer only partial protection. Instead governments should warn people to avoid exposure and work to clear the air.
Tiny particles of a mineral known as magnetite may be causing havoc with our health.
Traffic is one of the major sources of pollution worldwide, particularly in Asia’s packed cities.
Outdoor air pollution causes 3.3 million premature deaths a year, mainly in Asia. And without policies to cut particulate pollution from traffic, industry and home biofuels, the deaths could double by 2050.
Tourists wear protective masks in smoggy Tiananmen Square on February 26, 2014, when the air quality was officially ‘hazardous’.
EPA/Rolex Dela Pena
Beijing has once again experienced extremely poor air quality, in what is becoming a regular event for the Chinese capital and other parts of the country. But has anything changed since the last “airpocalypse…