Troposphere

Smoke and human-caused pollution have different effects on the clouds that produce much of Earth's rainfall, a new study finds.

In the 1900s, the U.S. warmed everywhere except the Southeast, where warming didn't begin till the 1990s. A study finds…

New research using data from NASA's airborne science campaigns shows how wildfire smoke could impact the atmosphere and climate much…

Clouds, which can help cool the Earth's surface, are being pushed toward the poles primarily by heated air from expanding…