Where do the biggest dust storms occur?

Mars is home to the largest and most powerful dust storms ever recorded. Martian dust storms have been known to engulf the entire planet in a haze for months at a time, making it difficult to single out one as being the biggest. Dust and sandstorms on Mars and Earth happen due to temperature differences in the atmosphere. Hot air moves to colder air, and this moving air can pick up tiny debris in arid landscapes. It is not known exactly why storms on Mars can spread so far, however the fact it is such a dusty world probably has something to do with it.

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