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There are 10 main cloud types, including the fluffy-looking cumulus clouds seen here. Image: AKARADECH MARK II / Getty Images Get the Popular Science daily newsletter💡 ...

Cumulus clouds can start at any height in the sky. Some begin close to the ground, while others look like tiny puffballs high in the sky. The puffy appearance is the tell-tale sign that a cloud is ...

Cumulus clouds over Lander, Wyo. Ross Lazear, CC BY-ND. However, if the air is particularly warm and humid, and the atmosphere above is much colder, ...

The root words in the name describe the cloud. Cumulus in Latin means a heap, a pile, an accumulation. As in an accumulation of laundry. These are clouds that have that tall, ...

Cumulus: Detached, bright white, dense clouds and with sharp outlines that develop vertically in the form of rising mounds, domes or towers. The bulging upper parts often resemble a cauliflower.

In nature, phenomena like white cumulus clouds, gray storm systems, and even the hollow hairs of polar bears offer remarkable lessons in balancing temperature, color and invisibility.