Air pollution

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.

Moms-to-be who are exposed to outdoor air pollution may have smaller babies.

Exposure to air pollution from cars in early life may increase the risk of autism, a new study suggests.