clouds

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.

They may douse themselves with a little water, but not enough to squelch the flames.

Noctilucent clouds have puzzled scientists since they were first seen in the late 19th century.

Waves, holes and swirls are just some of them!

See clouds afire with rainbow-colored light.