Air pollution

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.

Suicides correlate with air pollution levels in Salt Lake county, Utah, adding to a small but growing body of research that suggests that environmental factors influence suicide risk.

One of the deadliest tornado outbreaks in U.S. history was strengthened by smoke from burning farmlands in Central America, a new study suggests.