Two air pollution experts analyse the government's plan.
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.
High intensity logging burns and the resulting smoke plume near Mount Baw Baw, April 2018
Photo Chris Taylor.
Every autumn Victoria copes with smoke haze from planned burns that reduce bushfire risk, but a large part of that pollution actually comes from industrial logging activity.
Good for you, bad for the air?
New research is spotlighting personal care products, such as shampoos and skin lotions, as a significant source of chemicals that contribute to urban air pollution.
Lava flow moves in the Leilani Estates subdivision near Pahoa on the island of Hawaii, May 6, 2018.
USGS via AP
Fountains of lava from Hawaii's Kilauea volcano are dramatic, but the most deadly impacts of volcanic eruptions are toxic gases and ash and mud flows.
Morning smog in New Delhi, India.
AP Photo/Manish Swarup
According to one study, more than 8 million people per year die early from air pollution exposure.
Pollutants can increase stress levels, which in turn affects judgment and makes some people more likely to commit crime.
Mercury enters rice through local industrial activities and through burning coal.
Study finds that coal pollution in China is leading to people getting significant levels of mercury poisoning from rice.
False-color image of ozone concentrations above Antarctica on Oct. 2, 2015.
NASA/Goddard Space Flight Center
Earth's ozone layer shields us from harmful ultraviolet radiation. Nations have been working to reduce ozone-depleting chemicals since the 1980s, but recent studies show that there is still work to do.
Rush hour on the Hollywood Freeway, Los Angeles, September 9, 2016.
AP Photo/Richard Vogel
Air pollution could be the next battleground between California and the Trump administration, which is reviewing the Golden State's special legal authority to regulate tailpipe emissions.
When present in the lowest atmospheric layer – the troposphere, 8-14 kilometers above earth – ozone becomes a concern for human and plant health.
When present in the lowest atmospheric layer, ozone becomes a concern for human and plant health.
What if air quality standards were decided not by governments but by a dedicated federal body?
AAP Image/Dan Peled
Environmental and health groups have called for the creation of a non-political federal agency with the power to rule on pollution levels - much like the Reserve Bank does for interest rates.
A woman walks past a Mahindra e2o electric car during a media preview in Bengaluru.
There is a rapid shift in production of electric cars all over the world. But how will it benefit ordinary people?
A trash truck discharges solid waste at the South East Reserve Recovery Facility’s refuse storage pit in Long Beach, California, August 24, 2010.
AP Photo/Damian Dovarganes
Most Americans don't want incinerators in their neighborhoods, so waste management companies are burning trash in other facilities such as cement kilns. Is this a sustainable way to deal with garbage?
Free public transport could be one way to get more people to ditch the car.
We need to measure the volatile compounds that waft off the products in our homes and offices.
A surprising study published in Science found that as fuel emissions drop, consumer products are playing a larger role in air pollution.
Because of Hurricane Harvey, refineries and other facilities released 2,000 tons of pollutants.
AP Photo/LM Otero
An analysis of air pollutants from Texas shows how significant – and largely underregulated – the category of 'excess' emissions is across the US.
Times Square traffic jam.
New York soon may charge a fee to drive into central Manhattan as a way of reducing traffic and raising funds for public transit. An urban scholar says this step is overdue in the United States.
Artists impression of the purification tower.
SCMP / handout
China has built a skyscraper-sized purification tower. But it will only clean perhaps 0.01% of the air in the 'atmospheric box' sat over a city.