Wildfire smoke is dangerous, but when flames engulf homes, releasing harmful chemicals, that poses another health threat.

Most of the world breathes unhealthy air. Poor monitoring, industrial emissions, and weak regulations worsen air pollution.

Breathing in polluted air over a long period of time can cause respiratory illness ... Another notable effort to curb severe air pollution was the Association of Southeast Asian Nations agreement on ...

The haze reduced visibility for morning commuters driving throughout the region. Extreme drought in other states is to blame.