What are those beams of light that emerge from clouds?
How much condensed liquid water is in a cubic mile of fog and clouds? Fog envelopes the Milwaukee Art Museum, on Lake Michigan’s
Mysterious holes in clouds, such as this one, have long fascinated the public and, until recently, baffled scientists. New research
Why are clouds white? Photograph of Cumulus clouds in fair weather taken by Michael Jastremsk Clouds are made of water and clean water
Those are mammatus clouds, which are often, though not always, associated with thunderstorms. Mammatus often extend from the bottom of More
How does fog form? Photo: NASA Fog is a cloud in contact with the ground. When the relative humidity approaches 100 percent, water