It was the ever changing colorful landscape of clouds in the sky that created visual interest and emotional tone. It was a moment when I realized how much clouds color our experience of the world.

How does a cloud stay cool under direct sunlight—or seem to vanish in infrared? In nature, phenomena like white cumulus ...

Water is clear. The sky is blue. So why are clouds white? And if regular clouds are white, why are rain clouds gray? On sunny days, at picnics, we relax ...

Californians caught the sight of a lifetime when rare clouds recently illuminated the sky. Photographer Rain Hayes tweeted a photo on Dec. 16 of cobweb-looking wisps of clouds in the night sky in ...