I grew up in rural Colorado, deep in the mountains, and I can still remember the first time I visited Denver in the early 2000s. The city sits on the plain, skyscrapers rising and buildings extending ...

When indoor air pollution makes the news in western countries, it often feels like a local issue. One week it focuses on wood ...

The growing availability of low-cost air quality sensors is helping people across the world track air pollution. Headway The growing availability of low-cost air ...

In the stratosphere, ozone acts as a protective layer. But in the troposphere, at ground level, this colorless gas is incredibly harmful to human health and the environment in ways scientists are ...

Extreme heat is making air pollution worse, scientists say. And President Trump’s regulatory rollbacks could drive air pollution even higher. By Claire Brown and Christina Kelso The heat dome that is ...