Wildfire smoke is degrading air quality across the United States, exposing millions to short- and long-term health risks. Why ...

Wildfire smoke and ozone pollution trigger air quality alerts in multiple states, raising risks for respiratory and heart ...

Climate change means bad air pollution, wildfires, and extreme heat are all happening at once. Here's what to know and how to ...

The air quality this week is bad. Smoke from Canadian wildfires has turned the sky orange in Philadelphia. It has veiled the ...

When wildfires burn, smoke can travel long distances and degrade air quality far away, posing risks to those breathing it ...

Bad air can travel thousands of miles — and it even goes past your front door. So when the air quality index isn't looking so good, what can you do? Air quality is just a measure of how much stuff is ...

The orange haze hanging over your house is, indeed, bad. But the chemistry of wildfire smoke doesn’t have to be visible to be ...

Everyone loves a breath of fresh air. Unfortunately, too often our air is anything but fresh. While air quality varies dramatically from place to place and day to day, nearly the entire world—about 99 ...

Bad air quality can contribute to bronchitis, particularly if there is pollution from cigarette smoke. Other pollutants in the environment, such as toxic gases and dust, can also increase the risk.

On Wednesday, a massive earthquake off the eastern coast of Russia triggered a tsunami threatening Japan, Hawaii, and numerous other places already made far more dangerous by rising sea levels.