Air pollution

Living close to a site used for hydraulic fracturing, also called fracking, may increase a person's risk of developing asthma, a new study finds.

A new gadget can help people identify pollutants — some smaller than the width of a hair — in their homes.

Northeastern China is covered in hazy pollution clouds, according to satellite images taken by NASA, which have created health hazards for many Chinese citizens.

Shenyang's smog is even a problem for healthy individuals.

Getting diesel cars to operate with high fuel efficiency, power and clean emissions is a challenging problem, which may be why Volkswagen cheated the system.

Outdoor air pollution kills 3.3 million people around the world every year, according to a new study.

Fireworks are a beloved tradition of the Fourth of July, but the colorful displays also bring a spike in air pollution, a new study shows.

People who breathe polluted air every day may have smaller brains, and a higher risk for "silent strokes," researchers say.

In California, tougher rules about air pollution are linked with better lung health in children, a large new study finds.

Hot and humid cities can birth more summer thunderstorms than rural areas in the Southeast.