Shutdowns have led to cleaner air quality. Is it sustainable?

Smothered by smog, activists are urging Poland to reconsider coal

Nepal’s air pollution threatens humans and glaciers

Fighting the haze at the Grand Canyon

If you can’t afford an expensive air filter to deal with the smog in China, you can build a DIY model

What deteriorating air quality looks like around the world

Hayfever sufferers, be warned — avoid at all costs the allergy capital of the world

Hayfever sufferers, be warned — avoid at all costs the allergy capital of the world

Smog Standard Still Hazy

Running through China’s pollution