Cities like Lahore, Pakistan, Hotan China and Delhi, India have consistently poor air quality, but it's impossible to accurately identify the city with the world's worst air pollution.
An experimental study suggests that diesel fumes might disrupt the brain's typical pattern of activity.
Impressionist painters like Monet depicted their smog-filled surroundings in their artworks.
Tissue samples probed with laser light reveal thousands of particles of black carbon in the fetal placenta.
Higher levels of air pollution may be linked with worse mental health in children, a new study suggests.
Beijing and northern China have been hit with one of the worst sandstorms in decades which has increased air pollution concentrations to dangerous levels.
As the world scrambles to confront the disease caused by a novel coronavirus, Italy has been forced to take such dramatic measures that the country's emissions have changed, as seen from space.
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