Air pollution

Air pollution may be responsible for more than 2 million deaths around the world each year, according to a new study. Air pollution has been linked with heart problems such as heart and lung diseases

Wildfires burning on Sumatra have sent a choking haze over Singapore.

Chemicals found in air pollution may be a risk factor for autism.

Increase in dust storms isn't just in Western residents' imagination.

Aerosols shifted tropical rainfall southward, devastating Central Africa.

Study also confirms ozone is declining, thanks to stricter vehicle emissions standards.

For heart attack survivors, living close to a roadway may be hazardous for health, a new study suggests.

A city's ozone levels are linked to people's risk of cardiac arrest.

NASA planes track pollution to figure out how to improve air-quality monitoring from space.