If Clouds Are Made of Water, How Do They Stay in the Air?

Despite the conventional wisdom, they don’t really float.

Everyone loves clouds. Although they are gigantic and beyond our reach, they inspire us with their wide variety of shapes. I mean, who hasn’t played the game of guessing what a cloud looks like?

Of course, cloud watching can lead to some more scientific questions. If clouds contain water, shouldn’t they be heavier than the air around them? And if so, why do they float?

Answering those questions takes a few steps, so let’s get to it.

If you take a helium-filled balloon from a party and let it go, it doesn’t fall. It will likely rise up in the air—although it’s possible that it’s

→ Continue reading at Wired - Science

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