Puffy, wispy, white and gray, we’ve seen them all this spring. Clouds come in a variety of types, and each type comes with ...

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

NORFOLK, Va. — Spotting a cumulus cloud is pretty easy. The clouds resemble pieces of cotton candy, but why are cumulus clouds fluffy and not flat? To fully understand why, we need to start with ...

Cumulus clouds form in the sky over Santa Fe, New Mexico. (Photo by Robert Alexander/Getty Images) ... Apple Watch, AirPods, iPads and more are deeply discounted during Amazon’s Big Spring Sale.

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💡 ...

If a cloud were exactly 1 km cubed in volume, there would be enough water molecules inside a cloud to add up to more than 1.1 million pounds. And that’s just water weight.

Just because something floats doesn't mean it is weightless. A great example is when oil is poured onto water. The oil will float on top of the water, but that doesn't mean it has no weight.

If a cloud were exactly 1 km cubed in volume, there would be enough water molecules inside a cloud to add up to more than 1.1 million pounds. And that’s just water weight.

If a cloud were exactly 1 km cubed in volume, there would be enough water molecules inside a cloud to add up to more than 1.1 million pounds. And that’s just water weight.