Noctilucent or night-shining clouds are rare, high-altitude clouds that glow with a blue, silvery hue at dusk or dawn when the sun shines on them from below the horizon. These ice clouds typically ...

Puffy, wispy, white and gray, we’ve seen them all this spring. Clouds come in a variety of types, and each type comes with critical information about incoming weather patterns. If you’re a local hiker ...

The U.S. Weather Bureau has little faith in weather control. Last year the weathermen announced that they had tried seeding clouds with dry ice and found the trick does not work (TIME, Dec. 6). Last ...