A mid-sized boiler maker, not the city's many coal-fired power plants, was fined 300,000 yuans—the biggest fine to date.
Its creators claim it can do the work of 1,200 trees.
Scientists have linked a warmer climate to a 70 percent increase in unhealthy summertime ozone levels.
But they're not alone: roughly half the nation lives with unhealthy concentrations of ozone or particulate pollution.
The automated tolls cut down on air pollution, which in turn improves the health of pregnant women.
With smog keeping children indoors during winter months, the area's reputation for healthy outdoor living could be on the line.
No one now alive has experienced anything similar in North America or Europe, except in the middle of a forest fire or a volcanic eruption.
New York and Philadelphia top the list of urban areas with great gaps in pollution exposure between whites and non-whites.
Britain's parliament is launching an official enquiry into recent heavy smog.
Viewed under an electron microscope, smog can look like snowflakes.
It's the single largest environmental health risk today.
And it seems to be working in Sweden's three largest cities.
It must sting when the world's biggest smog-hole is calling your air polluted.
A select few countries have been responsible for the majority of the world's CO2 emissions since the '70s.
The city banned half of all cars from the roads on Monday. Will it be enough?
The entire Paris region's public transportation system will be free this weekend in an effort to stem the early spring smog.
A fascinating new project maps the air quality fluctuations within a city.
An unfortunate intersection of trends.
Americans and Europeans are partly to blame for the smog floating over the Pacific, say researchers.
It's not a new problem, but the country's struggle with air pollution has finally gone mainstream.