clouds

Because of light pollution, when clouds roll in at night, cities brighten instead of growing darker, researchers find. Here are photos of the artificial nighttime glow.

Stargazers in the southern U.S. will have some of the best viewing conditions in North America early on Tuesday morning for the Eta Aquarid meteor shower.

Open ocean clouds have been found to contain biological substances that can be traced to the waters where they formed.

Cities are turning to the cloud to improve operations and communications with their citizens.

The hole in the planet's ozone layer may be shifting wind patterns and cloud cover over Antarctica in a way that could be triggering slightly warmer global temperatures, a new study finds.

Some of the microbes appear to live high in the atmosphere.

Tiny bacteria that live in the clouds may seed ice crystals that cause rain

Water free of minerals and impurities freezes first, pushing the cloudy parts containing the sediment (and tiny trapped air bubbles) toward the center.