But if you have bad air, you cannot tell people to pause breathing,” she said. Several cities like Beijing, Seoul, South ...

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

This story was produced in partnership with the Pulitzer Center. It is part three in a four-part series. Read part one here ...

Pruitt recommends that everyone keep an eye on the air quality forecasts in their area as well as a few tips on bad air ...

But if you have bad air, you cannot tell people to pause ... Another notable effort to curb severe air pollution was the Association of Southeast Asian Nations agreement on transboundary haze ...

But if you have bad air, you cannot tell people to pause ... Another notable effort to curb severe air pollution was the Association of Southeast Asian Nations agreement on transboundary haze ...